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Description

The GW9251 is a precision, 24-bit analog-to-digital converter (ADC). With an onboard low-noise amplifier, onboard oscillator, precision second-order 24-bit delta-sigma (ΔΣ) modulator, the GW9251 provides a complete front-end solution for bridge sensor applications including weigh scales, strain gauges, and load cells.

The low-noise amplifier has a gain of 1/2/64/128, supporting a full-scale differential input of ±4.5V. The ΔΣ ADC has 24-bit resolution and is comprised of a second-order modulator and third-order digital filter.

Four data rates are supported: 10, 40, 500, and 1000SPS. The GW9251 can be put in power down mode. The GW9251 is available in an SOP-8 package and is specified from -40°C to +105°C.

Typical Applications

  • Weigh Scales
  • Strain Gauges
  • Pressure Sensors
  • Industrial Process Control
  • Electronic Scales

Basic Application Diagram

Features

Complete front-end for high resolution applications
24 bits without missing code
Internal Amplifier, Gain of 1-to-128
Internal Oscillator
Internal LDOs
Selectable 10, 40, 500, 1000 (SPS) data rates
External Voltage Reference up to 5V for Ratiometric Measurements
Simple, Pin-Driven Control
2-wire serial interface (SPI or I2C) with power down function.

Physical Characteristics

Supply Range: 2.7V to 5.5V
Operating temperature: –40°C to +105°C
Available in 5.0mm x 4.0mm SOP-8 package

Block Diagram

Datasheet and Guides

[GW9251]
Product Brief
File Download

Support

For more information about the product, technology, latest version of the document, or your nearest sales office, Please email us

Sample and Buy

Cascode Technologies

T9111, 9F, 66 Chungmin-ro, Songpa-gu, Seoul, 05838, Republic of Korea

+82-2-2157-7877 henry.kim@cascodetech.com

Touchworld

919ho, 224, Hwangsaeul-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, 13595, Republic of Korea

+82-10-2816-4349 martin.choi@touchworld.co.kr

Farben

Block B, WeiDa Technology Park, No.15, Gaoxin North 6th road, Songpingshan Community, Xili Street, Nanshan District, Shenzhen, China

www.farben.com.cn Lemon.He@farbenelec.com