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
Support
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Sample and Buy
Cascode Technologies
T9111, 9F, 66 Chungmin-ro, Songpa-gu, Seoul, 05838, Republic of Korea
Touchworld
919ho, 224, Hwangsaeul-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, 13595, Republic of Korea
Farben
Block B, WeiDa Technology Park, No.15, Gaoxin North 6th road, Songpingshan Community, Xili Street, Nanshan District, Shenzhen, China