ADC12130_14 Datasheet, PDF (1/52 Pages) Texas Instruments – ADC12130/ADC12132/ADC12138 Self-Calibrating 12-Bit Plus Sign Serial I/O A/D Converters with MUX and Sample/Hold

ADC12130, ADC12132, ADC12138
www.ti.com
SNAS098G – MARCH 2000 – REVISED MARCH 2013
ADC12130/ADC12132/ADC12138 Self-Calibrating 12-Bit Plus Sign Serial I/O A/D
Converters with MUX and Sample/Hold
Check for Samples: ADC12130, ADC12132, ADC12138
FEATURES
1
•2 Serial I/O (MICROWIRE, SPI and QSPI
Compatible)
• Power Down Mode
• Programmable Acquisition Time
• Variable Digital Output Word Length and
Format
• No Zero or Full Scale Adjustment Required
• 0V to 5V Analog Input Range with Single 5V
Power Supply
APPLICATIONS
• Pen-Based Computers
• Digitizers
• Global Positioning Systems
KEY SPECIFICATIONS
• Resolution 12-bit plus sign
• 12-Bit plus sign conversion time 8.8 μs (max)
• 12-Bit plus sign throughput time 14 μs (max)
• Integral Linearity Error ±2 LSB (max)
• Single Supply 3.3V or 5V ±10%
• Power Consumption
– +3.3V 15 mW (max)
– +3.3V power down 40 μW (typ)
– +5V 33 mW (max)
– +5V power down 100 μW (typ)
DESCRIPTION
NOTE: Some device/package combinations are
obsolete and are described and shown here for
reference only. See our web site for product
availability.
The ADC12130, ADC12132 and ADC12138 are 12-
bit plus sign successive approximation Analog-to-
Digital converters with serial I/O and configurable
input multiplexer. The ADC12132 and ADC12138
have a 2 and an 8 channel multiplexer, respectively.
The differential multiplexer outputs and ADC inputs
are available on the MUXOUT1, MUXOUT2, A/DIN1
and A/DIN2 pins. The ADC12130 has a two channel
multiplexer with the multiplexer outputs and ADC
inputs internally connected. The ADC12130 family is
tested and specified with a 5 MHz clock. On request,
these ADCs go through a self calibration process that
adjusts linearity, zero and full-scale errors to typically
less than ±1 LSB each.
The analog inputs can be configured to operate in
various combinations of single-ended, differential, or
pseudo-differential modes. A fully differential unipolar
analog input range (0V to +5V) can be
accommodated with a single +5V 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 output data format.
The serial I/O is configured to comply with NSC
MICROWIRE. For voltage references, see the
LM4040, LM4050 or LM4041.
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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