−140

−130

−120

−110

−100

−90

−80

−70

−60

−50

−40

−30

−20

−10

0

0

5k

10k

15k

20k

24k

Frequency (Hz)

G = 1 V/V

G071

THS4532

www.ti.com

SLOS829 – FEBRUARY 2013

Ultra Low Power, Rail-to-Rail Output, Fully-Differential Amplifier

Check for Samples: THS4532

1

FEATURES

DESCRIPTION

The THS4532 is a low-power, fully-differential op amp

•

Ultra Low Power:

with input common-mode range below the negative

–

Voltage: 2.5 V to 5.5 V

rail and rail-to-rail output. The device is designed for

–

Current: 250 µA

low-power data acquisition systems and high density

applications

where

power

consumption

and

–

Power-Down Mode: 0.5 µA (typ)

dissipation is critical.

•

Fully-Differential Architecture

The device features accurate output common-mode

•

Bandwidth: 36 MHz

control that allows for dc coupling when driving

•

Slew Rate: 200 V/µs

analog-to-digital converters (ADCs). This control,

•

coupled with the input common-mode range below

the negative rail and rail-to-rail output, allows for easy

•

Input Voltage Noise: 10 nV/

√Hz (f = 1 kHz)

interface from single-ended ground-referenced signal

•

High DC Accuracy:

sources

to

successive-approximation

registers

–

(SARs), and delta-sigma (

ΔΣ) ADCs using only

single-supply 2.5-V to 5-V power. The THS4532 is

–

also a valuable tool for general-purpose, low-power

–

differential signal conditioning applications.

•

Rail-to-Rail Output (RRO)

The device is characterized for operation over the

•

Negative Rail Input (NRI)

extended industrial temperature range from –40°C to

•

Output Common-Mode Control

+125°C. The following package options are available:

•

8-pin SOIC (MSOP) and VSSOP (D and DGK)

APPLICATIONS

•

10-pin WQFN (RUN)

•

Low-Power SAR,

ΔΣ ADC Driver

•

Low Power, High Performance:

–

Differential to Differential Amplifier

–

Single-Ended to Differential Amplifier

•

Low-Power, Wide-Bandwidth Differential Driver

•

Low-Power, Wide-Bandwidth Differential

Signal Conditioning

•

High Channel Count and Power Dense

Systems

Figure 1. 1-kHz FFT Plot on Audio Analyzer

Table 1. Related Products

THD (dBc) at 100

DEVICE

BW (MHz)

RAIL-TO-RAIL

kHz

THS4521

145

1.14

–120

4.6

Out

THS4520

570

15.3

–114

2

Out

THS4121

100

16

–79

5.4

In/Out

THS4131

150

16

–107

1.3

No

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.

PRODUCTION DATA information is current as of publication date.

Copyright © 2013, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.