ADS1240E

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ADS1240E

24-Bit Analog-to-Digital Converter

Packaging

Package | PIN: DB | 24
Temp: I (-40 to 85)
Carrier: Partial Tube
Qty Price
1-9 $10.92
10-24 $9.83
25-99 $9.18
100-249 $8.23
250-499 $7.68
500-749 $6.68
750-999 $5.79
1000+ $5.67

Features

  • 24 BITS NO MISSING CODES
  • SIMULTANEOUS 50Hz AND 60Hz REJECTION (-90dB MINIMUM)
  • 0.0015% INL
  • 21 BITS EFFECTIVE RESOLUTION (PGA = 1), 19 BITS (PGA = 128)
  • PGA GAINS FROM 1 TO 128
  • SINGLE-CYCLE SETTLING
  • PROGRAMMABLE DATA OUTPUT RATES
  • EXTERNAL DIFFERENTIAL REFERENCE OF 0.1V TO 5V
  • ON-CHIP CALIBRATION
  • SPI™ COMPATIBLE
  • 2.7V TO 5.25V SUPPLY RANGE
  • 600µW POWER CONSUMPTION
  • UP TO EIGHT INPUT CHANNELS
  • UP TO EIGHT DATA I/O
  • APPLICATIONS
    • INDUSTRIAL PROCESS CONTROL
    • WEIGHT SCALES
    • LIQUID/GAS CHROMATOGRAPHY
    • BLOOD ANALYSIS
    • SMART TRANSMITTERS
    • PORTABLE INSTRUMENTATION

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Texas Instruments  ADS1240E

The ADS1240 and ADS1241 are precision, wide dynamic range, delta-sigma, analog-to-digital (A/D) converters with 24-bit resolution operating from 2.7V to 5.25V supplies. These delta-sigma, A/D converters provide 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 50Hz and 60Hz 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 ADS1240 and ADS1241 are designed for high-resolution measurement applications in smart transmitters, industrial process control, weight scales, chromatography, and portable instrumentation.