+

±

R

C

+

±

R

G

R

G

R

F

ADS911 0

18-bit

2 MSPS

R

S

+

±

R

C

-12V

-12V

12V

12V

-0.2V

12V

R

F

C

F

C

F

AV DD

DVDD

1.8V

1.8V

VIN+

VIN-

OPA 810

OPA 810

THS 456 1

+

±

C

CB

C

CB

R¶

R¶

5V

OPA 837

V

OCM

VREF

R

FIL T

C

FIL T

+

±

5V

OPA 378

REF505 0

5.0 V

Reference

12V

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An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

OPA810

SBOS799A – AUGUST 2019 – REVISED DECEMBER 2019

OPA810 140-MHz, Rail-to-Rail Input/Output, FET-Input Operational Amplifier

1

1 Features

1

•

Gain-bandwidth product: 70 MHz

•

Small-signal bandwidth: 140 MHz

•

Slew rate: 200 V/µs

•

Wide supply range: 4.75 V to 27 V

•

Low noise:

–

Input voltage noise: 6.3 nV/

√Hz (f = 500 kHz)

–

Input current noise: 5 fA/

√Hz (f = 10 kHz)

•

Rail-to-rail input and output:

–

FET input stage: 2-pA input bias current

(typical)

–

High linear output current: 75 mA

•

Input offset: ±500 µV (maximum)

•

Offset drift: ±2.5 µV/°C (typical)

•

Low power: 3.7 mA/channel

•

Extended temperature operation:

–40°C to +125°C

•

Dual-channel version: OPA2810

2 Applications

•

Wideband photodiode transimpedance amplifiers

•

Analog input/output modules

•

Impedance measurements

•

Power analyzers and meters

•

High-Z voltage and current measurements

•

Data acquisition

•

Multichannel sensor interfaces

•

Optoelectronic drivers

3 Description

The

OPA810

is

a

single-channel,

field-effect

transistor (FET)-input, voltage-feedback operational

amplifier with bias current in the picoampere (pA)

range. The OPA810 is unity-gain stable with a small-

signal, unity-gain bandwidth of 140 MHz, and offers

excellent DC precision and dynamic AC performance

The OPA810 is fabricated on Texas Instrument's

proprietary, high-speed SiGe BiCMOS process and

achieves significant performance improvements over

comparable FET-input amplifiers at similar levels of

quiescent power. With a gain-bandwidth product

(GBWP) of 70 MHz, slew rate of 200 V/µs, and low-

noise voltage of 6.3 nV/

√Hz, the OPA810 is well

suited for use in a wide range of high-fidelity data

acquisition and signal processing applications.

The OPA810 features rail-to-rail inputs and outputs

and delivers 75 mA of linear output current, suitable

for driving optoelectronics components and analog-to-

digital converter (ADC) inputs or buffering digital-to-

analog converter (DAC) outputs into heavy loads.

The OPA810 is rated over the extended industrial

temperature

range

of

–40°C

to

+125°C.

The

OPA2810 is a dual-channel variant of this device,

available

in

8-pin

SOIC,

SOT23,

and

VSSOP

packages.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

OPA810

SOIC (8)

4.90 mm × 3.91 mm

SOT-23 (5)(2)

2.90 mm × 1.60 mm

SC70 (5)(2)

2.00 mm × 1.25 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

(2) Preview package.

High-Z Input Data Acquisition Front-End