High Temperature 24-Bit ADC, 8 Ch, PGA 1:128, 50/60 Hz Notch - ADS1243-HT

ADS1243-HT (ACTIVE)

High Temperature 24-Bit ADC, 8 Ch, PGA 1:128, 50/60 Hz Notch

 

Recommended alternative parts

  • ADS1278-HT  - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.    24 Bit, 128KSPS Octal Simultaneous Sampling Delta-Sigma ADC

Description

The ADS1243 is a precision, wide dynamic range, delta-sigma, analog-to-digital (A/D) converter with 24-bit resolution operating from 2.7-V to 5.25-V supplies. This delta-sigma, A/D converter provides up to 24 bits of no missing code performance and effective resolution of 21 bits.

The input channels are multiplexed. Internal buffering can be selected to provide a very high input impedance for direct connection to transducers or low-level voltage signals. Burnout current sources are provided that allow for the detection of an open or shorted sensor. An 8-bit digital-to-analog converter (DAC) provides an offset correction with a range of 50% of the FSR (Full-Scale Range).

The Programmable Gain Amplifier (PGA) provides selectable gains of 1 to 128 with an effective resolution of 19 bits at a gain of 128. The A/D conversion is accomplished with a second-order delta-sigma modulator and programmable FIR filter that provides a simultaneous 50-Hz and 60-Hz notch. The reference input is differential and can be used for ratiometric conversion.

The serial interface is SPI compatible. Up to eight bits of data I/O are also provided that can be used for input or output. The ADS1243 is designed for high-resolution measurement applications in smart transmitters, industrial process control, weight scales, chromatography and portable instrumentation.

Features

  • 24-Bits No Missing Codes
  • Simultaneous 50-Hz and 60-Hz Rejection
    (–90 dB Minimum)
  • 0.0025% INL
  • PGA Gains From 1 to 128
  • Single-Cycle Settling
  • Programmable Data Output Rates
  • External Differential Reference
    of 0.1 V to 5 V
  • On-Chip Calibration
  • SPI™ Compatible
  • 2.7 V to 5.25 V Supply Range
  • 600-µW Power Consumption
  • Up to Eight Input Channels
  • Up to Eight Data I/O

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Parametrics Compare all products in Analog to Digital Converters

 
Resolution (Bits)
Sample Rate (max) (SPS)
# Input Channels
INL (Max) (+/-LSB)
Power Consumption (Typ) (mW)
Interface
Architecture
Analog Voltage AVDD (Min) (V)
Analog Voltage AVDD (Max) (V)
Digital Supply (Min) (V)
Digital Supply (Max) (V)
Operating Temperature Range (C)
Rating
Package Group
Package Size: mm2:W x L (PKG)
Reference Mode
ADS1243-HT
24   
15   
8   
251.7   
0.6   
SPI   
Delta-Sigma   
2.7   
5.25   
2.7   
5.25   
-55 to 210   
High Temp   
CDIP SB   
See datasheet (CDIP SB)   
Ext   

Other qualified versions of ADS1243-HT

Version Part Number Definition
Catalog ADS1243 TI's standard catalog product