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ADS1234

Part Number	ADS1234
Manufacturer	Burr-Brown
Description	24-Bit Analog-to-Digital Converter
Published	Dec 8, 2006
Detailed Description	www.DataSheet4U.com BurrĆBrown Products from Texas Instruments ADS1232 ADS1234 SBAS350 – JUNE 2005 Ultra Low-Noise, 2...
Datasheet	ADS1234 PDF File

Overview

www.
DataSheet4U.
com BurrĆBrown Products from Texas Instruments ADS1232 ADS1234 SBAS350 – JUNE 2005 Ultra Low-Noise, 24-Bit Analog-to-Digital Converter FEATURES • • Up to 23.
5 Effective Bits RMS Noise: – 17nV at 10Hz – 44nV at 80Hz On-Board Low Noise Gain-Amp 19.
2-Bit Noise-Free Resolution at Gain = 64 Simultaneous 50Hz and 60Hz Rejection: – Internal Clock: 110 dB – External Clock: 130 dB ±1% Low-Drift On-Board Oscillator Selectable Gains of 1, 2, 64, and 128 Selectable 10/80SPS Conversion Rates 2-Channel Differential Input with Built-In Temp sensor (ADS1232) 4-Channel Differential Input (ADS1234) External Reference up to AVDD Simple Serial Digital Interface Supply Range: 2.
7V to 5.
3V –40°C to +105°C Temperature Range DESCRIPTION The ADS1232 and ADS1234 are precision analog-to-digital (A/D) converters featuring true 23.
5 effective-bit performance and exceptional ease of use.
Selectable gains of 1, 2, 64, or 128 allow full-scale differential input ranges of ±2.
5V to ±19.
5mV with a +5V reference.
While the ADS1232 offers a two-channel differential input and a built-in temperature sensor, the ADS1234 features a four-channel differential input multiplexer.
A very low-noise Gain-Amp features low differential input current to minimize errors when using high-impedance transducers.
An on-board oscillator is provided for excellent 50Hz and 60Hz rejection without an external clock source.
The devices also feature a low current driver to accommodate an external crystal; they also accept external clock sources for all applications.
All of the features of the ADS1232/ADS1234 are hard-wire selected, without software programming.
Data is accessed over a simple serial interface compatible with popular microcontrollers such as the MSP430.
The ADS1232 is available in the 24-pin TSSOP package, and the ADS1234 is available in the 28-pin TSSOP.
• • • • • • • • • • • • APPLICATIONS Weigh Scales Strain Gauges Bridge Sensors Industrial Process Control AVDD CAP REFP REFN DVDD GAIN [1:...

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