TLV9041UIDBVR datasheet(19/61 Pages) TI

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8 Detailed Description

8.1 Overview

The TLV904x is a family of low-power, rail-to-rail input and output operational amplifiers specifically designed

for battery powered applications. This family of amplifiers utilizes unique transistors that enable operation from

ultra low supply voltage of 1.2 V to a standard supply voltage of 5.5 V. These unity-gain stable amplifiers provide

350 kHz of GBW with an IQ of only 10 µA. TLV904x also has short circuit current capability of 40 mA at 5.5

V. This combination of low voltage, low IQ, and high output current capability makes this device quite unique

and suitable for suitable for a wide range of general-purpose applications. The input common-mode voltage

range includes both rails, and allows the TLV904x series to be used in many single-supply or dual supply

configurations. Rail-to-rail input and output swing significantly increases dynamic range, especially in low-supply

applications, and makes these devices ideal for driving low speed sampling analog-to-digital converters (ADCs).

Further, the class AB output stage is capable of driving resitive loads greater than 2-kΩ connected to any point

between V+ and ground.

The TLV904x can drive up to 100 pF with a typical phase margin of 45° and features 350-kHz gain bandwidth

product, 0.2-V/μs slew rate with 6.5-μVp-p integrated noise (0.1 to 10 Hz) while consuming only 10-μA supply

current per channel, thus providing a good AC performance at a very low power consumption. DC applications

are also well served with a low input bias current of 1 pA (typical), an input offset voltage of 0.6 mV (typical) and

a good PSRR, CMRR, and AOL.

8.2 Functional Block Diagram

Reference

Current

V+

IN-

IN+

(Ground)

BIAS2

BIAS1

Class AB

Control

Circuitry

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TLV9041, TLV9042, TLV9044

SBOS836G – MARCH 2020 – REVISED MARCH 2022

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TLV9041UIDBVR Datasheet(PDF) 19 Page - Texas Instruments