CS3302A

更新时间： 2024-11-27 06:49:27

品牌	Logo	应用领域
凌云 - CIRRUS		放大器
页数	文件大小	规格书
16页	360K
描述
High-Z, Programmable Gain, Differential Amplifier

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CS3302A 数据手册

CS3302A

High-Z, Programmable Gain, Differential Amplifier

Features & Description

Description

The CS3302A is a high input-impedance, differential in-

put, differential output amplifier with programmable

gain, optimized for amplifying signals from high-imped-

ance sensors such as hydrophones. The gain settings

are binary weighted (x1, x2, x4, x8, x16, x32, x64) and

are selected using simple pin settings. Two sets of ex-

ternal inputs, INA and INB, simplify system design as

inputs from a sensor and test DAC. An internal 800Ω

termination can also be selected for noise tests.

z Signal Bandwidth: DC to 2 kHz

z Selectable Gain: x1, x2, x4, x8, x16, x32, x64

z Differential Inputs, Differential Outputs

• Multiplexed inputs: INA, INB, 800Ω termination

• Rough / fine charge outputs for CS5371A / 72A / 73A

• Max signal amplitude: 5 V differential

• Ultra-low input bias: < 1 pA

z Excellent Noise Performance

Amplifier input impedance is very high, requiring less

than 1 pA of input current. Noise performance is very

good at 1 µV_p-pbetween 0.1 Hz and 10 Hz, and a noise

density of 8.5 nV/ √Hz over the 200 Hz to 2 kHz band-

width. Distortion performance is also extremely good,

typically -118 dB THD. Low input current, low noise, and

low total harmonic distortion make this amplifier ideal for

high-impedance differential sensors requiring maximum

dynamic range.

• 1 µV between 0.1 Hz and 10 Hz

p-p

• 8.5 nV/ √Hz from 200 Hz to 2 kHz

z Low Total Harmonic Distortion

• -118 dB THD typical (0.000126%)

• -112 dB THD maximum (0.000251%)

z Low Power Consumption

• Normal operation: 5 mA

• Power down: 10 µA

ORDERING INFORMATION

z Dual Power Supply Configuration

• VA+ = +2.5 V; VA- = -2.5 V;VD = +3.3 V

See page 15.

VA+

GUARD

INA+

INB+

OUTR+

OUTF+

GAIN0

GAIN1

GAIN2

MUX0

MUX1

OUTF-

OUTR-

INA-

INB-

VA-

PWDN

GND

This document contains information for a new product.

Cirrus Logic reserves the right to modify this product without notice.

Preliminary Product Information

NOV '07

DS765PP1

http://www.cirrus.com

12 3 4 5 6 7...16

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