CS5504-BP Datasheet

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CDB5504

CS5504

CS5504

Evaluation Board

20-Bit A/D Converter

Low-power, for CS5504 A/D Converter

Low Power,

20-bit A/D Converter

Features

Description

The CS5504 is a 2-channel, fully differential 20-bit, seri-

al-output CMOS A/D converter. The CS5504 uses

charge-balanced (delta-sigma) techniques to provide a

low cost, high-resolution measurement at output word

rates up to 200 samples per second.

The on-chip digital filter offers superior line rejection at

50 Hz and 60 Hz when the device is operated from a

32.768 kHz clock (output word rate = 20 Sps).

The CS5504 has on-chip self-calibration circuitry which

can be initiated at any time or temperature to ensure

minimum offset and full-scale errors.

Low power, high-resolution and small package size

make the CS5504 an ideal solution for loop-powered

transmitters, panel meters, weigh scales and battery-

powered instruments.

ORDERING INFORMATION

See

page 23.

CS5504-BS -40掳 to +85掳 C 20-pin SOIC

I

l

Delta-sigma A/D Converter

l

2 Differential Inputs

-

20-bit, No Missing Codes

-

Linearity Error: 卤0.0007%FS

-

Pin-selectable Unipolar/Bipolar Ranges

-

Common Mode Rejection

105 dB @ dc

120 dB @ 50, 60 Hz

l

Either 5V or 3.3V Digital Interface

l

On-chip Self-calibration Circuitry

l

Output Update Rates up to 200/Sps

l

Low Power Consumption: 4.4 mW

VREF+

12

VREF-

13

VA+

14

VA-

15

DGND

16

VD+

17

2

AIN1+

AIN1-

AIN2+

AIN2-

8

10

9

11

MUX

4th-Order

Delta-Sigma

Modulator

Serial

Interface

Logic

18

19

CS

SCLK

SDATA

Digital

Filter

20

DRDY

A0

1

4

Calibration

碌C

Calibration SRAM

3

CONV

OSC

5

XIN

6

XOUT

7

CAL

BP/UP

Cirrus Logic, Inc.

Crystal Semiconductor Products Division

http://www.cirrus.com

P.O. Box 17847, Austin, Texas 78760

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

http://www.crystal.com

Copyright

漏

Cirrus

Copyright

漏

Cirrus Logic, Inc. 2005

Logic, Inc. 1997

(All Rights Reserved)

(All Rights Reserved)

AUG 鈥?5

MAR 鈥?5

AUG 鈥?5

DS126F2

DS126F1

1

DS126DB2

next

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