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ADC1241 Datasheet Self-calibrating 12-bit Plus Sign Mp-compatible A/d Converter

Manufacturer: National Semiconductor (now Texas Instruments)

Overview: ADC1241 Self-Calibrating 12-Bit Plus Sign mP-Compatible A D Converter with Sample-and-Hold November 1994 ADC1241 Self-Calibrating 12-Bit Plus Sign mP-Compatible A D Converter with.

General Description

The ADC1241 is a CMOS 12-bit plus sign successive approximation analog-to-digital converter On request the ADC1241 goes through a self-calibration cycle that adjusts positive linearity and full-scale errors to less than g LSB each and zero error to less than g 1 LSB The ADC1241 also has the ability to go through an Auto-Zero cycle that corrects the zero error during every conversion The analog input to the ADC1241 is tracked and held by the internal circuitry and therefore does not require an external sample-and-hold A unipolar analog input voltage range (0V to a 5V) or a bipolar range ( b5V to a 5V) can be accommodated with g 5V supplies The 13-bit word on the outputs of the ADC1241 gives a 2’s complement representation of negative numbers The digital inputs and outputs are compatible with TTL or CMOS logic levels Key Specifications Y Y Y Y Y Y Resolution Conversion Time Linearity Error Zero Error Positive Full Scale Error Power Consumption g 12 Bits plus Sign 13 8ms (max) LSB ( g 0 0122%) (max) g 1LSB (max) g 1LSB (max) 70mW (max)

Key Features

  • Y Y Y Y Y Y Self-calibrating Internal sample-and-hold Bipolar input range with g 5V supplies and single a 5V reference No missing codes over temperature TTL MOS input output compatible Standard 28-pin DIP.

ADC1241 Distributor

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