ADC1241 Datasheet | National Semiconductor

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 acmodated with g 5V supplies The 13-bit word on the outputs of the ADC1241 gives a 2’s plement representation of negative numbers The digital inputs and outputs are patible 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) 70m W (max) Features 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 patible Standard 28-pin DIP Applications Digital Signal Processing High Resolution Process Control Instrumentation TRI-STATE is a registered trademark of National Semiconductor Corporation Simplified Schematic Connection Diagram Dual-In-Line Package TL H 10554 - 2 Top View Order Number ADC1241CMJ ADC1241CMJ 883 ADC1241BIJ or ADC1241CIJ See NS Package Number J28A TL H 10554 - 1 C1995 National Semiconductor Corporation TL H 10554 RRD-B30M115 Printed in U S A Absolute Maximum Ratings (Notes 1 2) If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Supply Voltage (VCC e DVCC e AVCC) 6 5V b 6 5V Negative Supply Voltage (Vb) b 0 3V to...