GS8331/8332/8334

350KHZ Zero-Drift CMOS Rail-to-Rail IO Opamp with RF Filter

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Features

·

Single-Supply Operation from +1.8V ~ +5.5V

·

Rail-to-Rail Input / Output

·

Gain-Bandwidth Product: 350KHz (Typ. @25

°C)

·

Low Input Bias Current: 20pA (Typ. @25

°C)

·

Low Offset Voltage: 10uV (Max. @25

°C)

·

Quiescent Current: 25

μA per Amplifier (Typ.)

·

Operating Temperature: -45

°C ~ +125°C

·

Zero Drift: 0.03

µV/°C (Max.)

·

Embedded RF Anti-EMI Filter

·

Small Package:

GS8331 Available in SOT23-5, SC-70 and SOP-8

Packages

GS8332 Available in SOP-8, MSOP-8 and DFN-8

Packages

GS8334 Available in SOP-14 and TSSOP-14 Packages

General Description

The GS833X amplifier is single/dual/quad supply, micro-power, zero-drift CMOS operational amplifiers, the amplifiers offer

bandwidth of 350 kHz, rail-to-rail inputs and outputs, and single-supply operation from 1.8V to 5.5V. GS833X uses chopper

stabilized technique to provide very low offset voltage (less than 10

µV maximum) and near zero drift over temperature. Low

quiescent supply current of 25

μA per amplifier and very low input bias current of 20pA make the devices an ideal choice for low

offset, low power consumption and high impedance applications.

The GS833X offers excellent CMRR without the crossover

associated with traditional complementary input stages. This design results in superior performance for driving

analog-to-digital converters (ADCs) without degradation of differential linearity.

The GS8331 is available in SOT23-5, SC-70 and SOP8 packages. And the GS8332 is available in SOP8, MSOP8 and DFN-8

packages. The GS8334 Quad is available in Green SOP-14 and TSSOP-14 packages. The extended temperature range of

-45

oC to +125oC over all supply voltages offers additional design flexibility.

Applications

·

Transducer Application

·

Temperature Measurements

·

Electronics Scales

·

Handheld Test Equipment

·

Battery-Powered Instrumentation

Pin Configuration

Figure 1. Pin Assignment Diagram