Datasheet > ADS1208IPWG4

ADS1208IPWG4

更新时间： 2024-09-15 21:54:03

品牌	Logo	应用领域
BB		转换器光电二极管
页数	文件大小	规格书
22页	369K
描述
2nd-Order Delta-Sigma Modulator with Excitation for Hall Elements

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ADS1208IPWG4 数据手册

ADS1208

SBAS348A–MARCH 2005–REVISED MARCH 2005

2nd-Order Delta-Sigma Modulator

with Excitation for Hall Elements

FEATURES

DESCRIPTION

•

±100mV Specified Input Range

The ADS1208 is a 2nd-order ∆Σ (delta-sigma) modu-

lator operating at a 10MHz clock rate. The specified

input range is ±100mV, optimized for current

measurement with a Hall sensor, especially in motor

±125mV Full-Scale Range

95dB typ. CMR, 82dB typ. SNR

Adjustable Current Output for Sensor Biasing

Digital Output Compatible to ADS1202/03

Differential Digital Outputs

control applications. The ADS1208 contains

programmable current source for sensor biasing and

has integrated input buffers for fast settling of the

sample capacitors; it also requires only a minimum of

external components. The differential analog input

offers low noise and excellent common-mode rejec-

tion.

Separate 2.7V to 5.5V Digital Supply Pin

APPLICATIONS

•

Motor Control

Current Measurement

Hall Sensors

Bridge Sensors

Instrumentation

BVDD

AVDD

ADS1208

IADJ

IOUT

Internal 2.5V

Reference

Buffer

REFOUT

REFIN

Buffer

V_IN+

MDATA

2nd−Order

∆Σ

Modulator

MCLK

Interface

Circuit

V_IN

−

RC Oscillator

20MHz

AGND

BGND

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...22

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