ADC12451 Datasheet | National Semiconductor

Description The ADC12451 is a CMOS 12-bit plus sign successive approximation analog-to-digital converter whose dynamic specifications (S N THD etc ) are tested and guaranteed On request the ADC12451 goes through a self-calibration cycle that adjusts linearity zero and full-scale errors The ADC12451 also has the ability to go through an Auto-Zero cycle that corrects the zero error during every conversion The analog input to the ADC12451 is tracked and held by the internal circuitry so an external sample-and-hold is not required The ADC12451 has a S H control input which directly controls the track-and-hold state of the A D 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 data result is available on the eight outputs of the ADC12451 in two bytes high-byte first and sign extended The digital inputs and outputs are patible with TTL or CMOS logic levels Telemunications High Resolution Process Control Instrumentation Features Self-calibration provides excellent temperature stability Internal sample-and-hold 8-bit m P DSP interface Bipolar input range with a single a 5V reference Key Specifications Y Y Y Y Y Y Y Y Applications Digital Signal Processing Audio Resolution Conversion Time Sampling Rate Bipolar Signal Noise Total Harmonic Distortion Aperture Time Aperture Jitter Zero Error Positive Full-Scale Error Power Consumption g 5V 12 bits plus sign 7 7 ms (max) 83 k Hz (max) 73 5 d B (min) b 78 0 d B (max) 100 ns 100 psrms g 2 LSB (max) g 1 5 LSB (max) 113 m W (max) Simplified Block Diagram Connection Diagram Dual-In-Line Package TL H 11025 - 2 Top View Ordering Information Industrial (b40 C s TA s 85 C) ADC12451CIJ TL H 11025 - 1 Package J24A Military Package (b55 C s TA s 125 C) ADC12451CMJ ADC12451CMJ 883 J24A TRI-STATE is a registered trademark of National Semiconductor Corporation C1995 National Semiconductor Corporation TL H 11025 RRD-B30M115 Printed...