CS5540

更新时间： 2024-09-14 23:16:27

品牌	Logo	应用领域
凌云 - CIRRUS		/
页数	文件大小	规格书
22页	412K
描述
LOW POWER LOW VOLTAGE 24- BIT ACD

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CS5540 数据手册

CS5540

Low-Power, Low-Voltage, 24 - Bit ∆Σ ADC

Features

Description

The CS5540 is a low-power and low-voltage ∆Σ ana-

log-to-digital converter (ADC), which achieves highly

accurate conversions using a simple non-programmable

interface that is easy to understand and design-in. It is

optimized to convert analog signals in DC measurement

applications, such as temperature and pressure mea-

surement, and various portable devices where

low-power consumption is required.

l ∆Σ Analog-to-Digital Converter

- Linearity Error: 0.0015% FS

- RMS Noise: 4 µV

l Two Channel Differential MUX

l Buffered, Fully Differential Analog and

Voltage Reference Inputs

l Scalable V

l High Absolute Accuracy via Self-Calibration

l Fixed Digital Filter

Input: 0.1 V to Analog Supply

To accommodate these applications, the ADC integrates

analog input and reference buffers for increased input

impedance and a two-channel multiplexer.

REF

- Single Conversion Settling at 6.7 SPS

- Simultaneous 50/60 Hz Rejection

l Simple Serial Interface

- SPI and Microwire Compatible

- Schmitt Trigger on Serial Clock (SCLK)

l Low Power

The CS5540 includes a digital filter, which achieves si-

multaneous rejection of 50/60 Hz signals and provides

single conversion settling at 6.7 SPS throughput. Abso-

lute accuracy is achieved via continuous internal

self-calibration. The device draws a nominal 330 µA.

Low-power, low-voltage operation, and a simple serial

interface make the CS5540 an ideal device for low-cost,

power-conscious DC measurement applications.

- Single +3.0 V Supply

- 330 µA Supply Current

- 10 µA in Sleep Mode

ORDERING INFORMATION

CS5540-AS

-40 ºC - +85 ºC

16-Pin SSOP

OSC1 OSC2

VA+

VREF+

VREF-

VD+

Clock

Generator

CHS

Serial

Interface

AIN1+

AIN1-

Differential

4th Order

Calibration

Input

Mux

Digital

Filter

SDO

∆Σ

AIN2+

AIN2-

Modulator

SCLK

Output

VA-

DGND

This document contains information for a new product.

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

Preliminary Product Information

JUN ‘01

P.O. Box 17847, Austin, Texas 78760

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

http://www.cirrus.com

DS503PP1

12 3 4 5 6 7...22

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