CONTENTS PERFORMANCE SUMMARY BOARD PHOTO

1

DEMO MANUAL DC2554A-A-KIT/DC2554A-B-KIT

Rev. 0

DESCRIPTION

LTC4125 and LT3652HV 650mA Wireless Battery Charger

Demonstration KitDC2554A-KIT is a kit of the DC2556A transmitter, featuring LTC®4125, the DC2555A-A/DC2555A-B receiver, featuring LT3652HV. The DC2555A-A/DC2555A-B receiver can charge a single Li-Ion battery at up to 650mA with an air gap of 3.0mm to 12.0mm between the transmit

All registered trademarks and trademarks are the property of their respective owners.

PERFORMANCE SUMMARY

CONTENTS

BOARD PHOTO

and receive coils. The DC2556A transmitter supports Optimum Power Search and Foreign Object Detection features via LTC4125.

Design files for this circuit board are available.

Figure 1. DC2556A Picture Figure 2. DC2555A-A/DC2555A-B Picture

SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS

VIN DC2556A Voltage Input IVIN ≤ 2.5A 4.5 5.5 V

IIN DC2556A VIN Current VIN = 5V 2.5 A

VBAT DC2555A-A Battery Charge Voltage 4.12 4.2 4.28 V

VBAT DC2555A-B Battery Charge Voltage 3.53 3.6 3.67 V

IBAT DC2555A-A/ DC2555A-B Charge Current VFB = 3V 650 mA

AIR-GAP Separation Between LTX and LRX 3.0 5.25 12 mm

KIT NUMBER TX BOARD TX PART NUMBER RX BOARD RX PART NUMBER RX OPTION

DC2554A-A-KIT DC2556A LTC4125 DC2555A-A LT3652HV Fixed 4.2V Float Voltage

DC2554A-B-KIT DC2556A LTC4125 DC2555A-B LT3652HV Fixed 3.6V Float Voltage

1 × DC2556A (LTC4125) Transmitter Demo Board 1 × DC2555A-A/DC2555A-B (LT3652HV) Receiver Demo Board (with 9.5mm (0.375’’) Nylon Standoffs, 5.25mm Gap) 4 × 12.5mm (0.375’’) Nylon Standoffs (8.25mm Gap) 4 × 15.9 mm (0.625’’) Nylon Standoffs (11.65mm Gap)

https://www.analog.com/DC2554A-A-KIT-DC2554A-B-KIT?doc=DC2554A-A-KIT-DC2554A-B-KIT.pdf


https://www.analog.com?doc=DC2554A-A-KIT-DC2554A-B-KIT.pdf


https://www.analog.com/en/design-center/evaluation-hardware-and-software/evaluation-boards-kits/DC2554A-A-KIT-DC2554A-B-KIT.html#eb-documentation?doc=DC2554A-A-KIT-DC2554A-B-KIT.pdf

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Rev. 0

QUICK START PROCEDURERefer to Figure 3 to 5 for the proper measurement equipment setup, DC2555A (for both -A and -B) mounting on DC2556A, and follow the procedure below:

1. Place the DC2555A board atop the DC2556A board by alignging the mounting standoffs (Figure 3). This should result in the transmit coil being direcly above the receive coil, with the centers aligned. The DC2554A-A-KIT/DC2554A-B-KIT ships with two additional standoff sizes. This allows the air gap to be varied from 5.25mm to 11.65mm.

2. Connect a voltage source PS1 and a 3Ω resistor RBAT1 in parallel between the BAT and GND turrets of DC2555A (Figure 4). PS1 and RBAT1 make up the battery emulator. Typical power supplies cannot sink current. By adding a resistor across the power supply inputs that draws more current than the maximum bat-tery charging current, the power supply only sources current even when the battery charge current is at its maximum value.

3. If an ammeter is used to measure the charge current, please be sure to use the external sensing by selecting EXTS jumper and connecting a pair of cable from VSNS and GND turrets to PS1 as Kelvin sensing connection. If an ammeter is not needed, INTS can be selected and Kelvin sensing connection is not needed.

4. Connect a power supply (PS2) between DC2556A VIN GND turrets. DC2556A can also be powered through Micro-USB cable to a 2.5A, 5V power source.

5. Set PS1 = 3.7V for DC2555A-A (set PS1= 3.2V for DC2555A-B), PS2 = 5V and enable both power supplies simultaneously. The DC2556A should start sweeping the LTx current, looking for a receiver. When a valid receiver is found, the LED sweeping will freeze until the next search period. This is also indicated by the DC2556A green status LED being turned on. The input current monitor LED string will show the input current percentage with respect to 2.5A current limit.

6. The DC2555A green LED string should be turned on, indicating power is delivered to the load. If all the green LEDs are lit, the LT3652HV on the DC2555A is deliver-ing full programmed battery charge current, which is 650mA in this demo.

7. The LTC4125 on the DC2556A keeps the transmit power required by the receiver for about 5 seconds. Then, the LTC4125 enters another search cycle to check the receiver side power demand.

8. When the system is operating correctly, slide a piece of blank PCB*, or coin between the transmit and receive coil. The transmit current should immediately drop to 0A.

9. When test is done, turn off PS1 and PS2 simultaneously.

*Testing with a blank PCB of at least 10 cm2 (1.5 IN2) of copper.

Figure 3. DC2555A-A-KIT in Operation



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Rev. 0

TEST SETUP

Figure 4. DC2555A-A/ DC2555A-B Connection

Figure 5. DC2556A Connection

PS24.5-5.5V Supply

2.5A

+

–

PS13.7V Supply

2A

+

–

RBAT13Ω



4


Rev. 0

THEORY OF OPERATIONThe DC2554A-A-KIT/DC2554A-B-KIT demonstrates the operation of a magnetically coupled resonant Wireless Power Transfer (WPT) system. The LTC4125 detects the power demand from the LT3652HV receiver and provides efficient wireless power for the receiver to charge the Li-Ion or LiFePO4 battery.

DC2556A – Wireless Power Transmitter Board featuring the LTC4125

The LTC4125 implements an AutoResonant drive of the series resonant transmit tank composed of the transmit coil LTX, and the transmit capacitor CTX. The AutoReso-nant driver uses a zero-crossing detector to determine the resonant frequency of the tank. All subsequent duty cycles discussed here use the resonant period determined by the AutoResonant circuitry.

The SW1 and SW2 pins each have a half bridge driver. At zero current crossing, whichever SWX pin has positive going current, is set to VIN for a duty cycle determined by the corresponding PTHX pin. When the SWX pin is set to VIN, it increases the current flowing in the trans-mitter resonant tank. Figure 6 shows tank current and voltage waveforms when duty cycle is less than 50%. The absolute value of the tank current is determined by the resonant tank components and also by the reflected load impedance.

Figure 6. Measuring Input or Output Ripple

VIN

IL VL

The LTC4125 sweeps the duty cycle by way of a 5-bit DAC that sets the PTHX voltage, and hence the duty cycle. The duration of each step of this DAC is programmable via CTS pin, which is set at 18ms in this demo.

The FB pin is driven by the node forming the junction of the transmit coil LTX, and the transmit capacitor CTX. The voltage at this node is proportional to the circulating current in the transmitter resonant tank.

The LTC4125 monitors the FB pin, and when a valid exit condition is found, it stops incrementing the PTHX volt-age. The PTHX voltage is held at the detection level for the rest of the sweep cycle. This sweep cycle timer is programmable by CTD pin, which is approximately 5 sec-onds in this demo.

If the receiver is removed from the transmitter, resonant tank current will rise significantly. The FB pin captures the rise of resonant current and terminates both half bridge drivers. As a result, the transmit power is reduced to standby mode.

If metal foreign objects are inserted between the trans-mit coil and the receive coil, the resonant frequency will increase significantly. The LTC4125 captures the rise of resonant frequency and reduces the transmit power to standby mode.

In standby mode, the LTC4125 will look for a valid receiver every 5s. If a valid receiver is found, the power transfer is resumed.

The LTC4125 uses an NTC resistor to monitor the tem-perature of the LTX and shut off the transmit power if the NTC reports a temperature higher than approximately 42°C. Please see the applications section of the data sheet for more detailed information.

DC2555A-A/DC2555A-B – Wireless Power Receiver Board featuring the LT3652HV

The DC2555A-A/DC2555A-B demo board implements a series resonant LC circuit. The AC waveform on the reso-nant circuit is rectified and applied to the VIN pin of the LT3652HV battery charger. The input regulation voltage of the LT3652HV is set at ≈16.5V. When VIN exceeds the input regulation voltage, the LT3652HV tries to charge a battery on its BAT pin.



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Rev. 0

THEORY OF OPERATION

Figure 7. Measuring Input or Output Ripple

When the DC2556A transmitter provides enough power for the LT3652HV to reach target charge current, the DC2555A temporarily allows the VIN voltage to reach 33V. This will trigger the exit condition of the LTC4125 search algorithm, indicating a valid load is found.

When the LT3652HV demands less current at the end of the charging cycle, the exit condition of the LTC4125 is triggered earlier than full load condition, and the power delivered from the DC2556A transmitter is reduced. This search algorithm helps to improve overall efficiency of the wireless charger solution at various load and coupling condition.

The LT3652HV is a full featured CC/CV (Constant Cur-rent/Constant Voltage) step-down(buck) battery charger, with low battery trickle charge. An external sense resis-tor between SENSE and BAT pins is used as the current feedback input to regulate the output current in CC mode. The charge current is programmed by this sense resis-tor. The BAT pin voltage is monitored through a voltage divider connected with VFB pin, which serve as the voltage feedback input to regulate the output voltage in CV mode. The charge voltage is programmed by this voltage divider from BAT pin to VFB pin.

The LT3652HV provides C/10 charge termination or safety timer termination scheme, which can be selected by the jumper on DC2555A board. External Kelvin sensing is jumper selectable when battery is connected with high resistance cable to the charger (when battery has to be placed far away from the charger).

Summary

The DC2554A-A-KIT/DC2554A-B-KIT allows full explo-ration of the LTC4125 wireless power transmitter and LT3652HV battery charger.

The DC2554A-A-KIT/DC2554A-B-KIT makes it possible to determine how the LTC4125 identifies a valid load or foreign object.

VPTH_LTC4125500mV/DIV

VFB_LTC4125500mV/DIV

VIN_LT3652HV10V/DIV



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Rev. 0

PARTS LISTITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER

DC2556A-A Required Circuit Components

1 3 C1-C3 CAP., 100uF, X5R, 6.3V, 10%, 1206 GRM31CR60J107KE39L

2 1 C4 CAP., 0.01uF, X7R, 50V, 10%, 0402 KEMET, C0402C103K5RAC7867

3 1 C5 CAP., 0.68uF, X5R, 10V, 10%, 0402 GRM155R61A684KE15D

4 1 C6 CAP., 4700pF, X7R, 50V, 10%, 0402 GRM155R71H472KA01D

5 1 C7 CAP., 680pF, C0G, 25V, 5%, 0402 GRM1555C1E681JA01D

6 2 C8, C10 CAP., 1uF, X5R, 16V, 10%, 0402 EMK105BJ105KV-F

7 1 C9 CAP CER 0.1UF 250V X7R 1206 GRM31CR72E104KW03L

8 2 C11, C12 CAP., 47uF, X5R, 6.3V, 20%, 0805 JMK212BBJ476MG-T

9 1 CTx1 CAP CER 0.1UF 250V C0G 1812 C4532C0G2E104J320KN

10 1 D3 DIODE, SCHOTTKY, 70V, 70mA, 0402/SOD-923F CDBQR70

11 1 D4 DIODE, SWITCHING, 300V, 250mA, SOD523-2 BAS521-7

12 1 D3 DIODE, SCHOTTKY, 70V, 70mA, 0402/SOD-923F COMCHIP, CDBQR70

13 1 D4 DIODE, SWITCHING, 300V, 250mA, SOD-523 DIODES INC., BAS521-7

14 1 LTx1 IND., 24uH, WIRELESS PWR CHRG TX COIL, 10%, 6A, 0.1 OHM, ROUND 50mm DIA.

760308100110

15 1 NTC1 CONN., JSC COAXIAL SOCKET, RCPT., FEMALE, SMD, 1PORT, I/O TERM.

MM5831-2700R

16 1 NTC_ASSEMBLY_1 NTC resistor assembly, 10k@25°C, ±1% FTN55XH103FD4B

17 1 Q1 XSTR., NPN, 40V, 0.2A, SOT883, AEC-Q101 PMBT3904M, 315

18 4 R1, R3, R17, R41 RES., 2.2k OHMS, 5%, 1/16W, 0402 CRCW04022K20JNED

19 1 R2 RES SMD 22 MOHM 1W 0805 KRL2012E-M-R022-F-T5

20 3 R4-R6 RES., 100k OHMS, 1%, 1/16W, 0402 CRCW0402100KFKED

21 1 R8 RES., AEC-Q200, 8.06K OHMS, 1%, 1/16W, 0402 CRCW04028K06FKED


23 1 R10 RES., AEC-Q200, 59k OHMS, 1%, 1/16W, 0402 CRCW040259K0FKED

24 8 R12, R24-R30 RES., AEC-Q200, 102k OHMS, 1%, 1/16W, 0402 CRCW0402102KFKED

25 1 R13 RES., 0 OHM, 1/16W, 0402 CRCW04020000Z0ED

26 1 R14 RES., 30.1k OHMS, 1%, 1/16W, 0402 CRCW040230K1FKED

27 1 R15 RES., AEC-Q200, 3.92k OHMS, 1%, 1/10W, 0402 ERJ2RKF3921X

28 1 R16 RES., 350V, AEC-Q200, 100k OHMS, 1%, 1/10W, 0603 KTR03EZPF1003

29 1 R18 RES., 10k OHMS, 5%, 1/16W, 0402 RC0402JR-0710KL

30 1 U1 IC, 5W Wireless Power Transmitter, QFN-20 (4x5), AutoResonant

LTC4125EUFD#PBF



7


Rev. 0


Additional Demo Board Circuit Components

1 3 C13, C15, C16 CAP., 0.01uF, X7R, 50V, 10%, 0402 C0402C103K5RAC7867

2 2 C14, C17 CAP., 1uF, X5R, 16V, 10%, 0402 EMK105BJ105KV-F

3 1 D1 LED, RED, WATER-CLEAR, 0603 LITE-ON, LTST-C193KRKT-5A

4 1 D5 LED, GREEN, WATER CLEAR, 0603 LITE-ON, LTST-C190KGKT

5 7 D6-D12 LED, BLUE, WATER CLEAR, 0603 SML-LXFP0603USBCTR

6 1 R19 RES., 10k OHMS, 5%, 1/16W, 0402 RC0402JR-0710KL

7 2 R20, R33 RES., 430 OHMS, 5%, 1/16W, 0402 RC0402JR-07430RL


9 1 R22 RES., AEC-Q200, 27.4k OHMS, 1%, 1/16W, 0402 CRCW040227K4FKED

10 1 R23 RES., 340k OHMS, 1%, 1/16W, 0402 RC0402FR-07340KL

11 1 R31 RES., AEC-Q200, 11.3k OHMS, 1%, 1/16W, 0402 CRCW040211K3FKED

12 1 R32 RES., 787k OHMS, 1%, 1/16W, 0402 NRC04F7873TRF

13 7 R34-R40 RES., 6.2k OHMS, 1%, 1/16W, 0402 RC0402FR-076K2L

14 1 R43 RES., AEC-Q200, 1 OHM, 5%, 1/10W, 0603 ERJ3GEYJ1R0V



Hardware: For Demo Board Only

1 3 E1, E4, E5 TEST POINT, TURRET, 0.094" MTG. HOLE, PCB 0.062" THICK MILL-MAX, 2501-2-00-80-00-00-07-0

2 2 E2, E3 CONN., BANANA JACK, FEMALE, THT, NON-INSULATED, SWAGE, 0.218"

KEYSTONE, 575-4

3 1 J1 CONN., MICRO USB-B, RCPT., FEMALE, 5-PIN, HORZ. R/A SMT WURTH ELEKTRONIK, 629105136821

4 2 JP1, JP2 CONN., HDR., MALE, 1x3, 2mm, THT, STR, NO SUBS. ALLOWED

SAMTEC, TMM-103-02-L-S

5 4 MP1-MP4 STANDOFF, NYLON, SNAP-ON, 0.250" 8831

6 1 NTC ASSEMBLY_1 CONN., JSC COAXIAL SOCKET, RCPT., FEMALE, SMD, 1PORT, I/O TERM.

MURATA, MM5831-2700RB

7 2 XJP1, XJP3 CONN., SHUNT, FEMALE, 2 POS, 2mm WURTH ELEKTRONIK, 60800213421



8


Rev. 0


DC2555A-A/DC2555A-B: Required Circuit Components

1 1 C1 CAP., 0.68uF, X5R, 10V, 10%, 0402 GRM155R61A684KE15D

2 3 C3, C10, C13 CAP., 1uF, X5R, 16V, 10%, 0402 EMK105BJ105KV-F

4 3 C4, C15, C16 CAP., 10uF, X7R, 50V, 20%, 1206 C3216X5R1H106K160AB

5 1 C5 CAP., 47uF, X5R, 16V, 20%, 1210 1210YD476MAT2A

6 1 C6 CAP., 0.1uF, X5R, 50V, 10%, 0402 GRM155R61H104KE14D

7 4 C8, C9, C11, C12 CAP., 0.01uF, X7R, 50V, 10%, 0402 C0402C103K5RAC7867

8 1 C14 CAP., 47uF, X5R, 6.3V, 20%, 0805 GRM21BR60J476ME15L

9 1 CRX1 CAP., 0.033uF, NP0, 100V, 5%, 1206 C3216NP02A333J160AA

10 1 D1 DIODE, SCHOTTKY RECT., 40V, 3A, SMA CMSH3-40MA TR13 LEAD FREE

11 2 DR1, DR2 DIODE, SCHOTTKY, 100V, 3A, SMA CMSH3-100MA TR13

12 1 DB1 DIODE, SCHOTTKY RECT., 40V, 1.75A, SOT-23F CMPSH1-4 TR LEAD FREE

13 1 FD1 FERRITE, DISC, 26mm DIA X 0.6mm THICK B67410A0223X195

14 1 L1 IND., 15uH, FIXED, 20%, 3.9A XAL5050-153MEC

15 1 M1 XSTR., MOSFET, N-CH, 60V, 6A, PowerPAK 1212-8 Si7308DN-T1-GE3

16 1 Q1 XSTR., NPN, 40V, 200mA, SOT23-3 MMBT3904

17 1 R3 RES., 511k OHMS, 1%, 1/16W, 0402, AEC-Q200 CRCW0402511KFKED

18 1 R4 RES., 100k OHMS, 1%, 1/10W, 0402 ERJ2RKF1003X


20 1 R37 RES., 20k OHMS, 1%, 1/16W, 0402, AEC-Q200 CRCW040220K0FKED

21 1 R38 RES., 1M OHMS, 1%, 1/16W, 0402, AEC-Q200 CRCW04021M00FKED

22 1 R39 RES., 49.9k OHMS, 1%, 1/16W, 0402 NRC04F4992TRF

23 1 R40 RES., 1k OHMS, 5%, 1/16W, 0402 MCR01MZPF1001

24 1 RSENSE1 RES., 0.15 OHM, 1%, 3/4W, 1206, SHORT-SIDE TERM., AEC-Q200, METAL, SENSE

KRL1632E-M-R150-F-T5

25 1 U1 IC, PWR Tracking 2A Batt.Charger, 3x3 DFN-12 LT3652HVEDD#PBF

26 1 Z1 DIODE, ZENER, 33V, 1W, SMA SMAZ33-13-F

27 1 Z2 DIODE, ZENER, 20V, 500mW, SOD-123 MMSZ5250B-7-F



9


Rev. 0

ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER

Additional Circuit Components

1 1 D2 LED, SUPER RED, MILKY WHITE DIFF., 0603 SMD, 660nm SML-LX0603SRW-TR

2 9 D3, D5-D12 LED, GREEN, MILKY WHITE DIFFUSED, 0603 SML-LX0603SUGW-TR

3 1 R1 RES., 0 OHM, 1/16W, 0402 CRCW04020000Z0ED

4 1 R7 RES., 20 OHMS, 5%, 1/16W, 0402 RK73B1ETTP200J

5 2 R8, R9 RES., 5.1k OHMS, 5%, 1/10W, 0603 CRCW06035K10JNEA

6 2 R10, R11 RES., 100 OHMS, 1%, 1/16W, 0402, AEC-Q200 CRCW0402100RFKED

7 4 R27-R34 RES., 1k OHMS, 5%, 1/16W, 0402 NRC04J102TRF

8 1 R12 RES., 1.21k OHMS, 1%, 1/16W, 0402, AEC-Q200 CRCW04021K21FKED

9 2 R13, R24 RES., AEC-Q200, 22.6k OHMS, 1%, 1/16W, 0402 CRCW040222K6FKED


11 1 R15 RES., AEC-Q200, 34.8k OHMS, 1%, 1/10W, 0402 ERJ2RKF3482X

12 7 R16-R22 RES., 100k OHMS, 5%, 1/16W, 0402 NRC04J104TRF

13 1 R23 RES., 49.9k OHMS, 1%, 1/16W, 0402 NRC04F4992TRF


15 1 U2 IC, CURRENT SENSE AMP, MSOP-8 LT6105CMS8#PBF

16 2 U3, U4 IC, QUAD COMPARATOR LP 1.221VREF, DFN-16 (5x4) LTC1445CDHD#PBF

Hardware: For Demo Board Only

1 4 BP1-BP4 BUMPER, CLEAR, SELF-ADHESIVE, 0.085" H, 0.335" DIA. 784-C

2 2 E1, E6 TEST POINT, TURRET, 0.064" MTG. HOLE, PCB 0.062" THICK 2308-2-00-80-00-00-07-0

3 4 E2, E3, E4, E5 TEST POINT, TURRET, 0.094" MTG. HOLE, PCB 0.062" THICK 2501-2-00-80-00-00-07-0

4 JP1, JP2, JP3, JP4 CONN., HDR., MALE, 1X3, 2MM, THT, STR TMM-103-02-L-S

4 MP1-MP4 STANDOFF, NYLON, SNAP-ON, 0.375" 8832

4 XJP3, XJP4, XJP5, XJP6 CONN., SHUNT, FEMALE, 2 POS, 2mm 4

DC2555A-A: Required Circuit Components

1 R6 RES., 90.9k OHMS, 1%, 1/16W, 0402, AEC-Q200 CRCW040290K9FKED

1 R36 RES., 178K OHMS, 1%, 1/16W, 0402, AEC-Q200 CRCW0402178KFKED

DC2555A-B: Required Circuit Components

1 R6 RES., 30.1k OHMS, 1%, 1/16W, 0402 CRCW040230K1FKED

1 R36 RES., AEC-Q200, 221k OHMS, 1%, 1/16W, 0402 CRCW0402221KFKED

PARTS LIST



10


Rev. 0

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SCHEMATIC DIAGRAM

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33V

JP4

1 3

2

E4

Figu

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0. D

C255

5A-A

/ DC2

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13


Rev. 0

Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

SCHEMATIC DIAGRAM

5 5

4 4

3 3

2 2

1 1

44

33

22

11

UNLE

SS N

OTED

:RE

SIST

ORS:

OHM

S, 04

02, 1

%, 1/

16W

CAPA

CITO

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F, 04

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0%, 5

0V

1.221

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U4.3

U3.3

1.186

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1.186

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CHAR

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NT

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BLE

MON

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94%

81%

69%

56%

44%

31%

19% 6%

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AL P

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BAR

GRAP

H FO

R SI

NGLE

3.6V

/ 4.2V

, 650

mA

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ELES

S BA

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* SEE

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T

Isen

seP

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06-0

6-19

R18

100k

D5

GREE

N

C8 0.01

uF

R32

1k

D11

GREE

N

R19

100k

PCB1

PCB,

DC2

555A

REV0

4

C10

1uF

R20

100k

R31 1k

U3E

LTC1

445-

DHD

8REF

9V-

D12

GREE

N

R21

100k

D9

GREE

N

R24

22.6

kR2

210

0k

R30 1k

U4E

LTC1

445-

DHD

8REF

9V-

JP3

13

2

U3D

LTC1

445-

DHD

13 12

149

15

3

17

U3C

LTC1

445-

DHD

11 10

149

16

3

17

D8

GREE

N

U3B

LTC1

445-

DHD

7 6

149

1

3

17

D10

GREE

N

R23

49.9

k

R29 1k

U4D

LTC1

445-

DHD

13 12

149

15

3

17

U3A

LTC1

445-

DHD

5 4

149

2

3

17

U4C

LTC1

445-

DHD

11 10

149

16

3

17

U4B

LTC1

445-

DHD

7 6

149

1

3

17

U4A

LTC1

445-

DHD

5 4

149

2

3

17

MP1

STAN

DOFF

, NYL

ON, S

NAP-

ON,0

.375

"

R15

34.8

k

MP2

R28 1k

R10

100

-+V

+V

-

U2LT

6105

-MS8

8 1

2 4

5

MP3

R11

100

R25

787k

R12

1.21

k

LB1

LABE

L SP

EC, D

EMO

BOAR

D SE

RIAL

NUM

BER

MP4

R27

1k

C13

1uF

BP1

BUM

PER,

CLEA

R,SE

LF-A

DHES

IVE,

0.08

5" H

,0.3

35" D

IA.

R34

1k

D7

GREE

N

R14

430

R16

100k

C11

0.01

uF

BP2

STNC

L1TO

OL, S

TENC

IL, 7

00-D

C255

5ARE

V04

BP3

D6

GREE

N

R26

430

R17

100k

R13

22.6

k

C12

0.01

uF

R33

1k

BP4

C9 0.01

uF

Figu

re 1

1. D

C255

5A-A

/ DC2

555A

-B C

ircui

t Sch

emat

ic P

age

2 of

2



14


Rev. 0

ANALOG DEVICES, INC. 2019

12/19www.analog.com

ESD Caution ESD (electrostatic discharge) sensitive device. Charged devices and circuit boards can discharge without detection. Although this product features patented or proprietary protection circuitry, damage may occur on devices subjected to high energy ESD. Therefore, proper ESD precautions should be taken to avoid performance degradation or loss of functionality.

Legal Terms and Conditions By using the evaluation board discussed herein (together with any tools, components documentation or support materials, the “Evaluation Board”), you are agreeing to be bound by the terms and conditions set forth below (“Agreement”) unless you have purchased the Evaluation Board, in which case the Analog Devices Standard Terms and Conditions of Sale shall govern. Do not use the Evaluation Board until you have read and agreed to the Agreement. Your use of the Evaluation Board shall signify your acceptance of the Agreement. This Agreement is made by and between you (“Customer”) and Analog Devices, Inc. (“ADI”), with its principal place of business at One Technology Way, Norwood, MA 02062, USA. Subject to the terms and conditions of the Agreement, ADI hereby grants to Customer a free, limited, personal, temporary, non-exclusive, non-sublicensable, non-transferable license to use the Evaluation Board FOR EVALUATION PURPOSES ONLY. Customer understands and agrees that the Evaluation Board is provided for the sole and exclusive purpose referenced above, and agrees not to use the Evaluation Board for any other purpose. Furthermore, the license granted is expressly made subject to the following additional limitations: Customer shall not (i) rent, lease, display, sell, transfer, assign, sublicense, or distribute the Evaluation Board; and (ii) permit any Third Party to access the Evaluation Board. As used herein, the term “Third Party” includes any entity other than ADI, Customer, their employees, affiliates and in-house consultants. The Evaluation Board is NOT sold to Customer; all rights not expressly granted herein, including ownership of the Evaluation Board, are reserved by ADI. CONFIDENTIALITY. This Agreement and the Evaluation Board shall all be considered the confidential and proprietary information of ADI. Customer may not disclose or transfer any portion of the Evaluation Board to any other party for any reason. Upon discontinuation of use of the Evaluation Board or termination of this Agreement, Customer agrees to promptly return the Evaluation Board to ADI. ADDITIONAL RESTRICTIONS. Customer may not disassemble, decompile or reverse engineer chips on the Evaluation Board. Customer shall inform ADI of any occurred damages or any modifications or alterations it makes to the Evaluation Board, including but not limited to soldering or any other activity that affects the material content of the Evaluation Board. Modifications to the Evaluation Board must comply with applicable law, including but not limited to the RoHS Directive. TERMINATION. ADI may terminate this Agreement at any time upon giving written notice to Customer. Customer agrees to return to ADI the Evaluation Board at that time. LIMITATION OF LIABILITY. THE EVALUATION BOARD PROVIDED HEREUNDER IS PROVIDED “AS IS” AND ADI MAKES NO WARRANTIES OR REPRESENTATIONS OF ANY KIND WITH RESPECT TO IT. ADI SPECIFICALLY DISCLAIMS ANY REPRESENTATIONS, ENDORSEMENTS, GUARANTEES, OR WARRANTIES, EXPRESS OR IMPLIED, RELATED TO THE EVALUATION BOARD INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, TITLE, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS. IN NO EVENT WILL ADI AND ITS LICENSORS BE LIABLE FOR ANY INCIDENTAL, SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES RESULTING FROM CUSTOMER’S POSSESSION OR USE OF THE EVALUATION BOARD, INCLUDING BUT NOT LIMITED TO LOST PROFITS, DELAY COSTS, LABOR COSTS OR LOSS OF GOODWILL. ADI’S TOTAL LIABILITY FROM ANY AND ALL CAUSES SHALL BE LIMITED TO THE AMOUNT OF ONE HUNDRED US DOLLARS ($100.00). EXPORT. Customer agrees that it will not directly or indirectly export the Evaluation Board to another country, and that it will comply with all applicable United States federal laws and regulations relating to exports. GOVERNING LAW. This Agreement shall be governed by and construed in accordance with the substantive laws of the Commonwealth of Massachusetts (excluding conflict of law rules). Any legal action regarding this Agreement will be heard in the state or federal courts having jurisdiction in Suffolk County, Massachusetts, and Customer hereby submits to the personal jurisdiction and venue of such courts. The United Nations Convention on Contracts for the International Sale of Goods shall not apply to this Agreement and is expressly disclaimed.




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CONTENTS PERFORMANCE SUMMARY BOARD PHOTO