ADVANCE INFORMATION
User's Guide
SLOU491 – August 2017
OPA2810DGK Evaluation Module
The OPA2810DGKEVM is an evaluation module for the dual-channel OPA810 amplifier in the DGK
(VSSOP-8) package. OPA810 is a FET-input, voltage-feedback operational amplifier with extremely low
input bias current. The OPA2810DGKEVM is designed to quickly and easily demonstrate the functionality
and versatility of the amplifier. The EVM is ready to connect to power, signal source, and test instruments
through the use of onboard connectors. The EVM is configured for easy connection with common 50-Ω
laboratory equipment at its inputs and outputs. Each amplifier is configured for single-ended input with a
non-inverting signal gain of 1 V/V at the device output. The OPA2810DGKEVM has a total onboard load of
2 kΩ to each amplifier. The output resistor network converts the output to a 50-Ω impedance source. The
evaluation module can be easily configured for other functions, gains, and single- or split-supply operation.
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4
5
Contents
Features .......................................................................................................................
EVM Specifications ..........................................................................................................
Power Connections ..........................................................................................................
3.1
Split-Supply Operation .............................................................................................
3.2
Single-Supply Operation ...........................................................................................
Input and Output Connections .............................................................................................
OPA2810DGKEVM Schematic, Layout, PCB 3D render, and Bill of Materials......................................
5.1
Schematic ............................................................................................................
5.2
OPA2810DGKEVM Layers ........................................................................................
5.3
PCB 3D render ......................................................................................................
5.4
Bill of Materials ......................................................................................................
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2
2
2
2
2
3
3
4
6
7
List of Figures
............................................................................................
1
OPA2810DGKEVM Schematic
2
OPA2810DGKEVM Top Layer, Signal .................................................................................... 4
3
3
OPA2810DGKEVM Layer 2 ................................................................................................ 4
4
OPA2810DGKEVM Layer 3 ................................................................................................ 5
5
OPA2810DGKEVM Bottom Layer ......................................................................................... 5
6
OPA2810DGKEVM 3D Render - Top ..................................................................................... 6
7
OPA2810DGKEVM 3D Render - Bottom ................................................................................. 6
1
EVM Specifications .......................................................................................................... 2
2
OPA2810DGKEVM Bill of Materials ....................................................................................... 7
List of Tables
Trademarks
All trademarks are the property of their respective owners.
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1
ADVANCE INFORMATION
Features
1
www.ti.com
Features
This EVM supports the following features:
• Configured for split-supply operation and easily modified for single supply
• Default gain of 1-V/V configuration can be easily reconfigured for other gains
• Designed for easy connection to standard 50-Ω input and output impedance test equipment
• Simple interface to the inputs and outputs through the SMA connectors
2
EVM Specifications
Table 1 lists the EVM specifications.
Table 1. EVM Specifications
PARAMETER
VALUE
Single-supply voltage range (V– = ground)
4.75 V to 27 V
VS±
Split-supply voltage range
±2.375 V to ±13.5 V
IQ±
Supply current (no load)
3.5 mA per amplifier
Input voltage
IOUT
3
VS±, Max
Linear output drive
±50 mA
Power Connections
The OPA2810DGKEVM is equipped with test point connectors for easy connection of power. The positive
supply input is red and is labeled V+. The negative supply input is yellow and is labeled V–. The ground is
black and is labeled GND.
3.1
Split-Supply Operation
To operate as split supply, apply the positive-supply voltage to V+, negative-supply voltage to V– , and the
ground reference from supply to GND.
3.2
Single-Supply Operation
To operate as single supply, connect both the V– connector and the GND connector to ground and apply
the positive-supply voltage to V+. Inputs and outputs must be biased per the specifications listed in the
data sheet for proper operation.
4
Input and Output Connections
The OPA2810DGKEVM is equipped with SMA connectors for connection of signal generators and
analysis equipment. As shipped, the EVM is configured for a non-inverting gain of 1 V/V, split-supply
operation, single-ended input and output with 50-Ω termination. For best results, signals must be routed to
and from the EVM with cables having 50-Ω characteristic impedance. INA+ (J2) and INB+ (J5) must be
used for single-ended input with 50-Ω source. OUTA (J3) and OUTB (J6) are the output connectors for
amplifiers A and B respectively. A resistor network (R8, R9, and R10 for amplifier A; R18, R19, and R20
for amplifier B) at the output of the amplifiers convert the output signal to 50-Ω single-ended source, and
provides a 2-kΩ load to the amplifier when terminated with 50-Ω load at J3 and J6. A 50-Ω line-impedance
match at OUTA (J3) and OUTB (J6) must be preserved. This results in an output measurement loss, and
the overall attenuation is approximately 38 dB. See the applications section, schematics, and layouts in
the OPA2810 data sheet: OPA2810 Dual High-Performance, Low-Power, Wide Supply Range, Rail-to-Rail
Input/Output FET-Input Operational Amplifier, for more details on how to reconfigure the EVM.
2
OPA2810DGK Evaluation Module
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OPA2810DGKEVM Schematic, Layout, PCB 3D render, and Bill of Materials
www.ti.com
5
OPA2810DGKEVM Schematic, Layout, PCB 3D render, and Bill of Materials
5.1
Schematic
Figure 1 illustrates the EVM schematic.
C1
DNP
R23
DNP
2pF
1.00k
R7
499
R3
DNP
976
R1
1
2
3
4
5
0
TP1
V+
DNP
8
J3
OUTA
2
3
A
V+
V-
GND
1
U1A
4
GND
R8
R9
1.96k
0
0
0
C5
10µF
GND
R10
51.1
C2
2pF
0
C6
0.01µF
C8
0.01µF
C7
10µF
GND
GND
GND
GND
VsGND
2
3
4
5
1
R22
0.01 F
0
1
OPA2810DGK
DNP
R6
TP3
GND
C9
R21
R4
TP2
V-
Vs-
Vs+
R2
52.3
J2
INA+
Vs+
5
4
3
2
J1
INA-
R5
49.9
GND
GND
GND
GND
C3
R 24
DNP
1.00k
DNP
2pF
R 17
499
R 13
DNP
976
V s+
8
J6
O UTB
6
5
B
V+
V-
0
DNP
R 14
R 16
0
0
1
C4
2pF
R 20
5 1 .1
V s-
GND
5
1
4
1 .9 6 k
4
GND
J5
IN B +
3
R19
U1B
OPA2810DGK
GND
2
7
R 18
2
R 12
5 2 .3
5
4
3
2
0
3
R11
4
1
5
J4
INB-
R 15
4 9 .9
GND
GND
GND
GND
Copyright © 2017, Texas Instruments Incorporated
See the OPA2810 data sheet for recommended operating conditions.
Figure 1. OPA2810DGKEVM Schematic
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OPA2810DGKEVM Schematic, Layout, PCB 3D render, and Bill of Materials
5.2
www.ti.com
OPA2810DGKEVM Layers
Figure 2 to Figure 5 show the OPA2810DGKEVM layers.
Figure 2. OPA2810DGKEVM Top Layer, Signal
Figure 3. OPA2810DGKEVM Layer 2
4
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OPA2810DGKEVM Schematic, Layout, PCB 3D render, and Bill of Materials
Figure 4. OPA2810DGKEVM Layer 3
Figure 5. OPA2810DGKEVM Bottom Layer
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OPA2810DGKEVM Schematic, Layout, PCB 3D render, and Bill of Materials
5.3
www.ti.com
PCB 3D render
Figure 6 and Figure 7 show the 3D renders of the PCB.
OP
A2
8
10
DG
KE
VM
Figure 6. OPA2810DGKEVM 3D Render - Top
Figure 7. OPA2810DGKEVM 3D Render - Bottom
6
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OPA2810DGKEVM Schematic, Layout, PCB 3D render, and Bill of Materials
www.ti.com
5.4
Bill of Materials
Table 2 lists the EVM bill of materials.
Table 2. OPA2810DGKEVM Bill of Materials
PART
REFERENCE
ITEM
PART
NUMBER
QUANTITY
MANUFACTURER
DESCRIPTION
1
C5, C7
2
C3216X6S1V106K160AC
TDK
CAP, CERM, 10 µF, 35 V, +/- 10%, X6S, 1206
2
C6, C8
2
06031C103JAT2A
AVX
CAP, CERM, 0.01 µF, 100 V, +/- 5%, X7R, 0603
3
J1, J2, J3, J4, J5,
J6
6
142-0701-851
4
R1, R4, R6, R9,
R11, R14, R16, R19
8
CRCW06030000Z0EA
5
R2, R12
2
RC0603FR-0752R3L
Yageo America
RES, 52.3, 1%, 0.1 W, 0603
6
R5, R15
2
RC0603FR-0749R9L
Yageo America
RES, 49.9, 1%, 0.1 W, 0603
7
R7, R17
2
RG1608P-4990-B-T5
Susumu Co Ltd
RES, 499, 0.1%, 0.1 W, 0603
8
R8, R18
2
CRCW06031K96FKEA
Vishay-Dale
RES, 1.96 k, 1%, 0.1 W, 0603
9
R10, R20
2
CRCW060351R1FKEA
Vishay-Dale
RES, 51.1, 1%, 0.1 W, 0603
10
R21, R22
2
RC1206JR-070RL
11
TP1
1
5000
Keystone
Test Point, Miniature, Red, TH
12
TP2
1
5004
Keystone
Test Point, Miniature, Yellow, TH
13
TP3
1
5001
Keystone
Test Point, Miniature, Black, TH
14
U1
1
OPA2810DGK
Emerson Network
Power
Vishay-Dale
Yageo America
Texas Instruments
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Connector, End launch SMA, 50 ohm, SMT
RES, 0, 5%, 0.1 W, 0603
RES, 0, 5%, 0.25 W, 1206
OPA2810DGK, DGK0008A (VSSOP-8)
OPA2810DGK Evaluation Module
Copyright © 2017, Texas Instruments Incorporated
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