ADC12048 Datasheet | National Semiconductor

Description Operating from a single 5V power supply, the ADC12048 is a 12 bit + sign, parallel I/O, self-calibrating, sampling analog-to-digital converter (ADC) with an eight input fully differential analog multiplexer. The maximum sampling rate is 216 k Hz. On request, the ADC goes through a self-calibration process that adjusts linearity, zero and full-scale errors. The ADC12048’s 8-channel multiplexer is software programmable to operate in a variety of binations of single-ended, differential, or pseudo-differential modes. The fully differential MUX and the 12-bit + sign ADC allows for the difference between two signals to be digitized. The ADC12048 can be configured to work with many popular microprocessors/microcontrollers and DSPs including National’s HPC family, Intel386 and 8051, TMS320C25, Motorola MC68HC11/16, Hitachi 64180 and Analog Devices ADSP21xx. For plementary voltage references see the LM4040, LM4041 or LM9140. n n n n n Programmable data bus width (8/13 bits) Built-in Sample-and-Hold Programmable Auto-Calibration and Auto-Zero cycles Low power standby mode No missing codes Key Specifications (f CLK = 12 MHz) n Resolution n 13-bit conversion time n 13-bit throughput rate n Integral Linearity Error (ILE) n Single Supply n VIN Range n Power consumption - Normal operation - Stand-by mode 12-bits + sign 3.6 µs, max 216 ksamples/s, min ± 1 LSB, max +5V ± 10% GND to VA+ 34 m W, max 75 µw, max Applications n n n n n Medical instrumentation Process control systems Test equipment Data logging Inertial guidance Features n 8-channel programmable Differential or Single-Ended multiplexer n Programmable Acquisition Times and user-controllable Throughput Rates Block Diagram DS012387-1 TRI-STATE ® is a registered trademark of National Semiconductor Corporation. © 2000 National Semiconductor Corporation DS012387 .national. Connection Diagrams PLCC Package PQFP Package DS012387-2 DS012387-3 Order Number ADC12048CIV See NS Package Number...