-140

-120

-100

-80

-60

-40

-20

0

0

20,000

40,000

60,000

80,000

100,000

120,000

Frequency (Hz)

2.7V

ADS8326

+In

-In

100

2.2nF

2k

2k

V

IN

OPA835

V

S-

2k

4.02k

4.02k

2.5V

5V

V

S+

V

DD

REF

2.7V

0V

V

SIG

1.35V

V

SIG

OPA835, OPA2835

www.ti.com

SLOS713B

– JANUARY 2011 – REVISED MAY 2011

Ultra Low-Power, Rail-to-Rail Out, Negative Rail In, VFB Op Amp

Check for Samples: OPA835, OPA2835

1

FEATURES

DESCRIPTION

Fabricated

using

the

industry-leading

BiCom-3x

•

Ultra Low Power

(SiGe complimentary bipolar) process, the OPA835

– Supply Voltage: 2.5V to 5.5V

and OPA2835 are single and dual ultra low-power,

– Quiescent Current: 250µA (typ)

rail-to-rail output, negative rail input, voltage-feedback

operational amplifiers designed to operate over a

– Power Down Mode: 0.5µA (typ)

power supply range of 2.5V to 5.5V Single Supply

•

Bandwidth: 56 MHz

and

±1.25V to ±2.75V dual supply. Consuming only

•

Slew Rate: 160 V/

µs

250

µA per channel and a unity gain bandwidth of

56MHz, these amplifiers set an industry leading

•

power-to-performance ratio for rail-to-rail amplifiers.

•

For battery powered portable applications where

•

Overdrive Recovery Time: 195ns

power is of key importance, the OPA835's and

•

SNR: 0.00015% (

OPA2835's

low

power

consumption

and

high

•

THD: 0.00003% (

frequency performance offers designers performance

versus power not attainable in other devices. Coupled

•

with a power savings mode to reduce current to

•

Input Voltage Noise: 9.3nV/rtHz (f=100 kHz)

<1.5μA, the device offers a very attractive solution for

•

Input Offset Voltage: 100

µV (500 µV max)

high

frequency

amplifiers

in

battery

powered

applications.

•

CMRR: 113dB

•

Output Current Drive: 40mA

The OPA835 and OPA2835 are offered in following

package options:

•

RRO

– Rail-to-Rail Output

•

OPA835 Single: SOT23-6 (DBV), and 10 pin RUN

•

Input Voltage Range:

–0.2V to 3.9V (5V supply)

with integrated gain resistors.

•

Operating Temperature Range:

–40°C–125°C

•

OPA2835 Dual: SOIC-8 (D), MSOP-10 (DGS),

and 10 pin RUN.

APPLICATIONS

The devices are characterized for operation over the

•

Low Power Signal Conditioning

extended industrial temperature range

–40°C to

•

Audio ADC Input Buffer

125

°C.

•

Low Power SAR and

ΔΣ ADC Driver

OPA835 Related Products

•

Portable Systems

DESCRIPTION

SINGLES

DUALS

TRIPLES

QUADS

•

Low Power Systems

Rail-to-Rail

—

OPA2830

—

OPA4830

•

High Density Systems

Rail-to-Rail, Low

OPA836

OPA2836

—

—

Power

•

Ultrasonic Flow Meter

Rail-to-Rail, Fixed

OPA832

OPA2832

OPA3832

—

Gain

General-Purpose, High

OPA690

OPA2690

OPA3690

—

Slew Rate

Low-Noise, DC

OPA820

OPA2822

—

OPA4820

Precision

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

UNLESS

OTHERWISE

NOTED

this

document

contains

Copyright

© 2011, Texas Instruments Incorporated

PRODUCTION DATA information current as of publication date.

Products conform to specifications per the terms of Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.