SBOU282A December   2022  – March 2023 OPA928

 

  1.   Abstract
  2.   Trademarks
  3. 1Read This First
    1. 1.1 EVM Cleanliness Guidelines
  4. 2Overview
    1. 2.1 Guarding and Shielding
  5. 3Getting Started
    1. 3.1 Related Documentation From Texas Instruments
    2. 3.2 Electrostatic Discharge Caution
  6. 4EVM Circuit Description
    1. 4.1 High-Impedance Amplifier Circuit
    2. 4.2 Transimpedance Amplifier Circuit
      1. 4.2.1 Configure the TIA
      2. 4.2.2 TIA Functions
        1. 4.2.2.1 T-Switch
        2. 4.2.2.2 Guarded Diode Limiter
  7. 5Cleaning the EVM
    1. 5.1 Ultrasonic Wash
    2. 5.2 Manual Cleaning Procedure
  8. 6Schematic, PCB Layout, and Bill of Materials
    1. 6.1 EVM Schematic
    2. 6.2 PCB Layout
    3. 6.3 Bill of Materials

Bill of Materials

Table 6-1 lists the bill of materials (BOM) used for the OPA928EVM.

Table 6-1 OPA928EVM Bill of Materials
DesignatorQuantityValueDescriptionPackage ReferencePartNumberManufacturer

C1, C2, C6, C7

4

100 nF

0.1 µF ±10% 50V Ceramic Capacitor X7R 0603 (1608 Metric)

0603

C0603C104K5RAC7081

KEMET

C3

1

3.3 pF

CAP, CERM, 3.3 pF, 50 V, +/- 8%, C0G/NP0, 0805

0805

08055A3R3CAT2A

AVX

C8

1

1 pF

CAP, CERM, 1 pF, 50 V, +/- 25%, C0G/NP0, 0805

0805

08055A1R0CAT2A

AVX

C9

1

100 pF

CAP, CERM, 100 pF, 50 V, +/- 5%, C0G/NP0, 0805

0805

CL21C101JBANNNC

Samsung Electro-Mechanics

CF

1

100 pF

CAP, CERM, 100 pF, 100 V, +/- 1%, C0G/NP0, 0805

0805

08051A101FAT2A

AVX

D1

1

Zener Diode 3.6 V 320 mW ±2% Surface Mount SOD-323

SOD-323

PZU3.6B1A,115

Nexperia

H1, H2, H3, H4

4

Machine Screw, Round, #4-40 x 1/4, Nylon, Philips panhead

Screw

NY PMS 440 0025 PH

B&F Fastener Supply

H5, H6, H7, H8

4

Standoff, Hex, 0.5"L #4-40 Nylon

Standoff

1902C

Keystone

J1

1

Connector Jack, TH

Connector Jack, TH

CBJ70

Cinch Connectivity

J2, J5, J6

3

Connector, TH, BNC Right angle, 50 ohm gold

5413631-2

5413631-1

AMP

J3, J4, J8, J9

4

Terminal Block, 3.5mm, 3x1, Tin, R/A, TH

Terminal Block, 3.5mm, 3x1, TH

OSTTE030161

On-Shore Technology

J7, JP1, JP4

3

Header, 100mil, 2x1, Gold, TH

Header, 100mil, 2x1, TH

HTSW-102-07-G-S

Samtec

JP2a, JP2b, JP3a, JP3b

4

Header, 2.54mm, 1x1, Gold, TH

Header, 2.54mm, 1x1, TH

HTSW-101-07-G-S

Samtec

K1

1

Relay, SPST-NC (1 Form B), 0.5 A, SMD

SMD, 4.4x2.1x3.9mm

G3VM-63G(TR05)

Omron Electronic Components

K2

1

Relay, SPST-NO (1 Form A), 0.12 A, SMD

SMD, 2.85x2.2mm

G3VM-81PR(TR05)

Omron Electronic Components

LBL1

1

Thermal Transfer Printable Labels, 0.650" W x 0.200" H - 10,000 per roll

PCB Label 0.650 x 0.200 inch

THT-14-423-10

Brady

MP1

1

Standard RF Shield 1.0 x 2.0 x 0.75

RF_SHIELD

1.0 x 2.0 x 0.75

Fotofab

MP2, MP3

2

Standard RF Shield 1.0 x 1.5 x 0.25

RF_SHIELD

1.0 x 1.5 x 0.25

Fotofab

P1, P2, P4, P5, P6, P7

6

Pin Receptacle Connector 0.020" - 0.032" (0.51mm - 0.81mm) No Tail Solder

PTH

0338-0-15-15-15-27-10-0

Mill-Max

P3

1

4 Position Socket Connector 0.050" (1.27mm) Surface Mount Gold

CONN_SCKT4

399-41-004-21-300000

Mill-Max

R1, R2, R4, R6

4

0 Ω

RES 0 OHM JUMPER 1/4W 0603

0603

HCJ0603ZT0R00

Stackpole Electronics

R5

1

10.0 kΩ

10 kOhms ±1% 0.25W, 1/4W Chip Resistor 0805 (2012 Metric) Anti-Sulfur Thin Film

0805

RNCP0805FTD10K0

Stackpole Electronics

R7, R8

2

750 Ω

RES, 750, 1%, 0.125 W, AEC-Q200 Grade 0, 0805

0805

CRCW0805750RFKEA

Vishay-Dale

R9, R11, R12

3

100 kΩ

RES, 100 k, 1%, 0.2 W, 0805

0805

RMCF0805FT100K

Stackpole Electronics

R10, R13, Rg, Rga

4

0 Ohms Jumper 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film

0805

RMCF0805ZT0R00

Stackpole Electronics

RF

1

10 GΩ

10 GOhms ±10% 0.25W, 1/4W Chip Resistor 1206 (3216 Metric) High Voltage Thick Film

1206

HVC1206Z1008KET

Ohmite

Rgnd

1

0 Ω

0Ω ±0 0.25W 1206 Thick Film Chip Resistor AEC-Q200 compliant

1206

RMCF1206ZT0R00

Stackpole Electronics

Riso1, Riso2

2

49.9 Ω

RES, 49.9, 1%, 0.25 W, AEC-Q200 Grade 0, 0805

0805

RNCP0805FTD49R9

Stackpole Electronics Inc

SH1, SH2, SH3, SH4, SH5, SH6, SH7, SH8, SH9, SH10

10

RFI SHIELD CLIP TIN SMD

RFI SHIELD CLIP

S1711-46R

Harwin

SH-J1

1

1x2

Shunt, 100mil, Flash Gold, Black

Closed Top 100mil Shunt

SPC02SYAN

Sullins Connector Solutions

SH-J2

1

4 (1 x 4) Position Shunt Connector Black Open Top 0.100" (2.54mm) Gold or Gold, GXT™

JUMPER

69144-204LF

Amphenol ICC

TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8, TP9, TP10, TP11

11

Test Point, Compact, SMT

Testpoint_Keystone_Compact

5016

Keystone

U1, U2

2

16-V, fA Input Bias, Precision, CMOS, Rail-to-Rail Input/Output Operational Amplifier, SOIC8

SOIC8

OPA928

Texas Instruments

C4

0

DNP

CAP

0805

N/A

Any

C5, C10

0

DNP

CAP

0805

N/A

Any

FID1, FID2, FID3

0

DNP

Fiducial mark. There is nothing to buy or mount.

N/A

N/A

N/A

R3, Rgb

0

DNP

RES

0805

N/A

Any