描述 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?kHz. 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 combinations 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 Tl's HPC family, Intel386 and 8051, TMS320C25, Motorola MC68HC11/16, Hitachi 64180 and Analog Devices ADSP21xx.
For complementary voltage references see the LM4040, LM4041 or LM9140.

特性 Features

·8-Channel Programmable Differential or Single-Ended Multiplexer
·Programmable Acquisition Times and User-Controllable Throughput Rates
·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 ·(fCLK = 12 MHz)
·Resolution: 12-Bits + Sign
·13-Bit Conversion Time: 3.6 μs, Max
·13-Bit Throughput Rate: 216 ksamples/s, Min
·Integral Linearity Error (ILE): ±1 LSB, Max
·Single Supply: +5 V ±10%
·VIN Range: GND to VA+
·Power Consumption·Normal Operation: 34 mW, Max
·Stand-By Mode: 75 μw, Max
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