ADC12L030 - 3.3V Self-Calibrating 12-Bit Plus Sign Serial I/O A/D Converters with MUX and Sample/Hold
National Semiconductor 2008/03/10 10:57NOTE: These products are now obsolete. The ADC12L030 family is 12-bit plus sign successive approximation A/D converters with serial I/O and configurable input multiplexers. These devices are fully tested with a single 3.3V power supply. The ADC12L032, ADC12L034 and
ADC12L038 have 2, 4 and 8 channel multiplexers, respectively.
Differential multiplexer outputs and A/D inputs are available at the MUXOUT1, MUXOUT2, A/DIN1 and A/DIN2 pins. The ADC12L030 has a two channel multiplexer with the multiplexer outputs and A/D inputs internally connected. On request, these A/Ds go through a self calibration process that adjusts linearity, zero and full-scale errors to less than ±1⁄2 LSB each.
The analog inputs can be configured to operate in various combinations of single-ended, differential, or pseudodifferential modes. A fully differential unipolar analog input range (0V to +3.3V) can be accommodated with a single +3.3V supply. In the differential modes, valid outputs are obtained even when the negative inputs are greater than the positive because of the 12-bit plus sign two’s compliment output data format.
The serial I/O is configured to comply with NSC’s MICROWIRE™ and Motorola’s SPI standards. For voltage references, see the LM4040, LM4050 or LM4041 data sheets.
The ADC12L032 and the ADC12L034 are not recommended for new designs and are presented for reference only.
Features
* 0V to 3.3V analog input range with single 3.3V supply
* Serial I/O ( MICROWIRE and SPI Compatible)
* 2 or 8 channel differential or single-ended multiplexer
* Power down mode
* Programmable acquisition time
* Variable digital output word length and format
* No zero or full scale adjustment required
Key Specifications
* Resolution 12-bit plus sign
* 12-bit plus sign conversion time 8.8 μs (min)
* 12-bit plus sign sampling rate 73 kHz (max)
* Integral linearity error ±1 LSB (max)
* Single supply 3.3V ±10%
* Power consumption, active 15 mW (max)
* Power consumption, pwr down 40 μW (typ)
Applications
* Portable Medical instruments
* Portable computing
* Portable Test equipment
ADC12L030CIWM
ADC12L032CIWM
ADC12L034CIWM
ADC12L038CIWM
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