Analog Devices LTC5597 User manual

DEMO MANUAL DC3129A-KIT

Rev. 0

DESCRIPTION

LTC5597 Linduino Shield 100MHz to

70 GHz RMS Power Detector

Demonstration circuit DC3129A-KIT is a Linduino

evalu-

ation kit for RMS Power Detector LTC

5597. It is set up

for quick evaluation of RMS RF power measurement using

the Arduino/Linduino compatible platform and software

download available. When connected to PC with USB

cable, accurate power level can be monitored using the

graphic user interface.

The LTC5597 is a wide dynamic range linear-in-dB RMS

RF Power Detector, operational from 100MHz to 70GHz.

The Linduino (DC2026C) platform provides 10-bit ADC at

4.9mV/LSB resolution with 5V default reference voltage.

Input dynamic range with 1dB accuracy is up to 35dB

depending on frequency. The detector output slope is

normally 6 LSB/dB. The DC3129A-KIT is optimized for

wide operational frequency signals up to 70GHz using

the 1.85mm edge mount connector. Input impedance is

internally matched to 50Ω. It is suitable for RMS mea-

surements of high crest factor waveforms up to 12dB

peak-to-average. No external coupling capacitor is neces

sary if DC voltage at RFIN pin is kept below 1.0V. On board

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

(Note 1)

Supply Voltage(VCC): +3.8V

DC Voltage at RFIN: –0.3V to 1.0V

DC Voltage at FLTR: –0.3V to 0.4V

DC Voltage at EN: –0.3V to 3.8V

RFIN Input Power-Average: +15dBm

TJMAX 150°C

Case Operating Temperature Range –40°C to 105°C

Storage Temperature Range –65°C to 150°C

Note 1:Voltage on all pins must not exceed VCC+0.3V

or be less than –0.3V.

CAUTION: This part is sensitive to electrostatic discharge

(ESD). Observe proper ESD precautions when handling

the LTC5597.

TEST SETUP

ABSOLUTE MAXIMUM INPUT RATINGS

3.3V regulator provides power to the shield by jumper

JP1. Contact applications support for more information.

Design files for this circuit board are available.

Figure1. Test Setup for RF Performance Measurements

DEMO MANUAL DC3129A-KIT

Rev. 0

NOTES ON TEST EQUIPMENT AND SETUP

1. Remove the DC3129A-KIT from its protective packag-

ing in an ESD-safe working area, connect USB cable

to PC(see Figure1).

2. Set JP1 which provides the 3.3V to VCC by the on board

regulator.

3. Download and install QuikEval if it’s not yet installed.

4. The Eval Kit comes with a Linduino board pre-loaded

with ﬁrmware. Follow Figure2 to re-load the ﬁrmware

if necessary, which can be downloaded from www.

analog.com.

5. Follow instruction from QuikEval which will automati-

cally update the GUI.

6. Connect USB cable from PC to Linduino board. Con-

nect the RF input to the signal generator at the 1.85mm

connector, J1.

7. Set the frequency and power level (less than +10dBm)

of the signal generator.

8. Open QuikEval, and set the frequency of signal to be

measured. Push “READ” to measure RF power. Using

the default calibration would be loading the nominal

slope and intercept from LTC5597 data sheet values.

See Figure3.

9. Forhigheraccuracy,Calibrationcanbeperformed using

the GUI at various frequency with two point calibration.

Set input power level to the corresponding calibration

points on the GUI, and calibrate accordingly by clicking

the corresponding button.

10. Read RF power using the GUI.

QUICK START PROCEDURE

DEMO BOARD USAGE NOTES

Use a high performance signal generator with accu-

rate output power levels up to 70GHz, such as Agilent

E8257D.

DC3129A-KIT includes Linduino DC2026C, and the

demo board DC3128A assembled with1.85mm con-

nector for best performance up to 70GHz.

nConnecting cable for RF signal should be rated up to

70GHz for the best performance.

Optional input attenuation can be used to improve

return loss, but also shifts the log intercept point

accordingly.

1. Evaluation DC3129A-KIT has provisions for inter-stage

ﬁlter cap. Additional capacitor (C3) can be added to

slow down the transient response to reduce the output

ripple. The range for C3 is 10pF to 1nF.

2. Output power is calculated using slope and intercept.

3. ADC count • 4.9mV/slope+intercept=output power.

Slope is derived from two point calibration in the linear

region of transfer function.

4. A minimum two point calibration is necessary for most

applications. Additional calibration points will improve

the accuracy of the power detection.

DEMO MANUAL DC3129A-KIT

Rev. 0

Figure3. GUI

Figure4. Calibration

DEMO BOARD USAGE NOTES

Figure2. Firmware Re-Load (Only If Necessary)

DEMO MANUAL DC3129A-KIT

Rev. 0

PARTS LIST

ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER

Required Circuit Components

1 1 C1 CAP., CX Series, (16kHz to 40GHz), 0.1µF, YD, 16V,

10%, 0402

MURATA, 935152424610-T3N

2 2 C3, C14 CAP., 0.01µF, X7R, 16V, 10%, 0402 MURATA, GRM155R71C103KA01D

NIC, NMC0402X7R103K16TRPF

3 1 C4 CAP., 1µF, X5R, 10V, 10%, 0402 MURATA, GRM155R61A105KE15D

AVX, 0402ZD105KAT2

TDK, C1005X5R1A105K050BB

4 1 C8 CAP., 10pF, NP0, 50V, 10%, 0402 AVX, 04025A100KAT2A

5 0 C10 CAP., OPTION, 0402

6 2 C11, C15 CAP., 0.1µF, X7R, 16V, 10%, 0402 AVX, 0402YC104KAT2A

Taiyo Yuden, EMK105B7104KV-F

TDK, C1005X7R1C104K050BC

7 2 C12, C13 CAP CER 10UF 6.3V X5R 0402 TDK Corporation, C1005X5R0J106M050BC

8 5 E1, E2, E3, E4, E5 TEST POINT, TURRET, 0.064", MTG. HOLE MILL-MAX, 2308-2-00-80-00-00-07-0

9 1 J1 CONN., SMA, 1.85mm, JACK TO EDGE LUNCH, DC-67GHz SOUTHWEST MICROWAVE 1892-03A-6

10 1 J2 CONN., HDR, FEMALE, 1x10, 2.54mm, THT, STR SULLINS CONNECTOR SOLUTIONS, PPPC101LFBN-RC

11 2 J3, J4 CONN., HDR, FEMALE, 1x8, 2.54mm, STR, THT SULLINS CONNECTOR SOLUTIONS, PPPC081LFBN-RC

12 1 J5 CONN., HDR., FEMALE, 1x6, 2.54mm, THT, STR SULLINS CONNECTOR SOLUTIONS, PPPC061LFBN-RC

13 1 J6 CONN., TERM. BLOCK, RCPT, 1x2, 5mm, SIDE ENTRY,

THT

TE CONNECTIVITY, 282836-2

14 2 JP1, JP2 CONN., HDR, MALE, 1x2, 2mm, VERT, STR, THT, 10u"

SAMTEC, TMM-102-02-L-S

15 1 LB1 LABEL SPEC, DEMO BOARD SERIAL NUMBER BRADY, THT-96-717-10

16 1 PCB1 PCB, DC3128A ANALOG DEVICES INC., 600-DC3128A

17 1 R1 RES., AEC-Q200, 2k OHMS, 1%, 1/16W, 0402 VISHAY, CRCW04022K00FKED

NIC, NRC04F2001TRF

18 1 R2 RES., 1 OHM, 1%, 1/16W, 0402 VISHAY, CRCW04021R00FKED

19 0 R8, R14 RES., OPTION, 0402

20 3 R9, R10, R11 RES., 4.99k OHMS, 1%, 1/16W, 0402 NIC, NRC04F4991TRF

VISHAY, CRCW04024K99FKED

YAGEO, RC0402FR-074K99L

21 1 R12 RES., 100 OHMS, 1%, 1/16W, 0402 NIC, NRC04F1000TRF

YAGEO, RC0402FR-07100RL

22 1 R13 RES., 3k OHMS, 5%, 1/16W, 0402 VISHAY, CRCW04023K00JNED

23 1 STNCL1 TOOL, STENCIL, 700-DC3128A ANALOG DEVICES INC., 830-DC3128A

24 1 U1 IC, 100MHz to 70GHz Linear-in-dB RMS Power

Detector with 35dB Dynamic Range

LINEAR TECH, LTC5597_DC#PBF

25 1 U2 IC, LOW NOISE, LDO MICROPOWER REG., TSOT23-5 LINEAR TECH., LT1761ES5-3.3#PBF

LINEAR TECH., LT1761ES5-3.3#TRPBF

26 1 U3 IC, MEMORY, EEPROM, 2Kb (256x8), TSSOP-8,

400kHz

MICROCHIP, 24LC025-I/ST

MICROCHIP, 24LC025T-I/ST

DEMO MANUAL DC3129A-KIT

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

D D

C C

B B

A A

1. ALL RESISTORS ARE IN OHMS, 0402

2. ALL CAPACITORS ARE IN MICROFARADS, 0402

NOTE: UNLESS OTHERWISE SPECIFIED

DATE

REV DESCRIPTION APPROVED

ANDY M.

REVISION HISTORY

1 PRODUCTION 06-05-20

3.3V

3.3V5V

3.3V

DATE:

SHEET OF

TITLE: SCHEMATIC

APPROVALS

PCB DES.

APP ENG.

SIZE:

SCHEMATIC NO. AND REVISION:

CUSTOMER NOTICE

THIS CIRCUIT IS PROPRIETARY TO ANALOG DEVICES AND

SUPPLIED FOR USE WITH ANALOG DEVICES PARTS.

SKU NO.

IC NO.

ANALOG DEVICES HAS MADE A BEST EFFORT TO DESIGN A

CIRCUIT THAT MEETS CUSTOMER-SUPPLIED

SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S

RESPONSIBILITY TO VERIFY PROPER AND RELIABLE

OPERATION IN THE ACTUAL APPLICATION. COMPONENT

SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT

MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE

OR RELIABILITY. CONTACT ANALOG DEVICES

APPLICATIONS ENGINEERING FOR ASSISTANCE.

2555 AUGUSTINE DRIVE

www.analog.com

ANALOG

DEVICES

AHEAD OF WHAT'S POSSIBLE TM

SANTA CLARA, CA 95054

KIM T.

ANDY M.

LTC5597IDC

100MHz - 70 GHz RMS POWER DETECTOR

DC3128A-1 710-DC3128A_REV01

N/A Friday, June 05, 2020DATE:

SHEET OF

TITLE: SCHEMATIC

APPROVALS

PCB DES.

APP ENG.

SIZE:

SCHEMATIC NO. AND REVISION:

CUSTOMER NOTICE

THIS CIRCUIT IS PROPRIETARY TO ANALOG DEVICES AND

SUPPLIED FOR USE WITH ANALOG DEVICES PARTS.

SKU NO.

IC NO.

ANALOG DEVICES HAS MADE A BEST EFFORT TO DESIGN A

CIRCUIT THAT MEETS CUSTOMER-SUPPLIED

SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S

RESPONSIBILITY TO VERIFY PROPER AND RELIABLE

OPERATION IN THE ACTUAL APPLICATION. COMPONENT

SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT

MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE

OR RELIABILITY. CONTACT ANALOG DEVICES

APPLICATIONS ENGINEERING FOR ASSISTANCE.

2555 AUGUSTINE DRIVE

www.analog.com

ANALOG

DEVICES

AHEAD OF WHAT'S POSSIBLE TM

SANTA CLARA, CA 95054

KIM T.

ANDY M.

LTC5597IDC

100MHz - 70 GHz RMS POWER DETECTOR

DC3128A-1 710-DC3128A_REV01

N/A Friday, June 05, 2020DATE:

SHEET OF

TITLE: SCHEMATIC

APPROVALS

PCB DES.

APP ENG.

SIZE:

SCHEMATIC NO. AND REVISION:

CUSTOMER NOTICE

THIS CIRCUIT IS PROPRIETARY TO ANALOG DEVICES AND

SUPPLIED FOR USE WITH ANALOG DEVICES PARTS.

SKU NO.

IC NO.

ANALOG DEVICES HAS MADE A BEST EFFORT TO DESIGN A

CIRCUIT THAT MEETS CUSTOMER-SUPPLIED

SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S

RESPONSIBILITY TO VERIFY PROPER AND RELIABLE

OPERATION IN THE ACTUAL APPLICATION. COMPONENT

SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT

MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE

OR RELIABILITY. CONTACT ANALOG DEVICES

APPLICATIONS ENGINEERING FOR ASSISTANCE.

2555 AUGUSTINE DRIVE

www.analog.com

ANALOG

DEVICES

AHEAD OF WHAT'S POSSIBLE TM

SANTA CLARA, CA 95054

KIM T.

ANDY M.

LTC5597IDC

100MHz - 70 GHz RMS POWER DETECTOR

DC3128A-1 710-DC3128A_REV01

N/A Friday, June 05, 2020

1uF

10V

C11

0.1uF

ANALOG IN

JACK

DC-70GHz

C14

0.01uF

0.1uF

C13

10uF

4.99k

C15

0.1uF

TE-282836-2

TERM. BLOCK

3.3V

R12

100

R10

4.99k

GND

JP1

HD1X2-079

24LC025-I/ST

SDA 5

VCC 8

VSS

WP 7

SCL 6

DIGITAL

PCB1 PCB, DC3128A REV01

R13

R11

4.99k

LTC5597

VCC

OUT

FLTR

GND

4GND 5

RFin 6

GND 7

EN 8

GND

C10

OPT

LT1761-S5-3.3

GND

BYP 4

1VOUT 5

SHDN

VOUT

OPT

C12

10uF

JP2

HD1X2-079

R14

OPT

0.01uF

POWER

10pF

SCL

SDA

EGND

AREF

DEMO MANUAL DC3129A-KIT

Rev. 0

 ANALOG DEVICES, INC. 2020

12/20

www.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

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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

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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

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