ADC12048 Datasheet, PDF (1/36 Pages) National Semiconductor (TI) – 12-Bit Plus Sign 216 kHz 8-Channel Sampling Analog-to-Digital Converter

ADC12048
www.ti.com
SNAS105B – APRIL 2000 – REVISED MARCH 2013
ADC12048 12-Bit Plus Sign 216 kHz 8-Channel Sampling Analog-to-Digital Converter
Check for Samples: ADC12048
FEATURES
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•2 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
APPLICATIONS
• Medical Instrumentation
• Process Control Systems
• Test Equipment
• Data Logging
• Inertial Guidance
KEY SPECIFICATIONS
• (f_CLK = 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%
• V_IN Range: GND to V_A+
• Power Consumption
– Normal Operation: 34 mW, Max
– Stand-By Mode: 75 μw, Max
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.
1
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2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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