CS5181 datasheet(1/24 Pages) CIRRUS

부품명	CS5181

상세설명	Modulator & 400 kHz to 625 kHz 16-Bit ADC

PDF	24 Pages

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제조업체	CIRRUS [Cirrus Logic]

홈페이지	http://www.cirrus.com

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Copyright

Cirrus Logic, Inc.

P.O. Box 17847, Austin, Texas 78760

(512) 445 7222 FAX: (512) 445 7581

http://www.crystal.com

Preliminary Product Information

This document contains information for a new product.

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

CS5181

∆Σ Modulator & 400 kHz to 625 kHz 16-Bit ADC

Features

l 16-Bit Delta-Sigma A/D Converter

l Fully Differential Input with 4.0 Vpp Range

l Dynamic Range: 93 dB

l Spurious Free Dynamic Range: 90 dBc

l Harmonic Distortion: 89 dB

l Up to 625 kHz Output Word Rate

l No Missing Codes

l Non-Aliasing Low-Pass Digital Filter

l High Speed 3-Wire Serial Interface

l Supply Requirements:

- VA+ = 5 V, VD+ = 3.3 V: 570 mW

l Modulator Output Mode

l Power-Down Mode

Description

CS5181 is a fully calibrated high-speed

∆Σ analog-to-

digital converter, capable of 625 kSamples/second out-

put word rate (OWR). The OWR scales with the master

clock. It consists of a 5th order

∆Σ modulator, decimation

filter, and serial interface. The chip can use the 2.375 V

on-chip voltage reference, or an external 2.5 V refer-

ence. The input voltage range is 1.6 × VREFIN Vpp fully

differential. Multiple CS5181s can be fully synchronized

in multi-channel applications with a sync signal. The part

has a power-down mode to minimize power consump-

tion at times of system inactivity. The high speed digital

I/O lines have complementary signals to help reduce ra-

diated noise from traces on the PC board layout. The

CS5181 can also be operated in modulator-only mode

which provides the delta-sigma modulator bitstream as

the output.

ORDERING INFORMATION

CS5181-BL

-40 °C to +85 °C

28-pin PLCC

I

AIN+

AIN-

VREF+

VREFIN

VREFOUT

VREFCAP

PWDN

SYNC RESET MODE

VA+

AGND

VD+

DGND

MCLK

MFLAG

SDO

SCLK

FSO

Decimator

Clock

x1.6

Reference

Timing

and

Control

Serial

Interface

∆Σ

Modulator

VREF-

Mode

Selector

APR ‘99

DS250PP1

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