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ADC12H030 Datasheet(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part No. ADC12H030
Description  Self-Calibrating 12-Bit Plus Sign Serial I/O A/D Converters with MUX and Sample/Hold
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
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ADC12H030 Datasheet(HTML) 1 Page - National Semiconductor (TI)

 
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ADC12H030/ADC12H032/ADC12H034/ADC12H038,
ADC12030/ADC12032/ADC12034/ADC12038
Self-Calibrating 12-Bit Plus Sign Serial I/O A/D
Converters with MUX and Sample/Hold
General Description
The ADC12030, and ADC12H030 families are 12-bit plus
sign successive approximation A/D converters with serial I/O
and
configurable
input
multiplexers.
The ADC12032/
ADC12H032,
ADC12034/ADC12H034
and
ADC12038/
ADC12H038 have 2, 4 and 8 channel multiplexers, respec-
tively. The differential multiplexer outputs and A/D inputs are
available on the MUXOUT1, MUXOUT2, A/DIN1 and A/DIN2
pins. The ADC12030/ADC12H030 has a two channel multi-
plexer with the multiplexer outputs and A/D inputs internally
connected. The ADC12030 family is tested witha5MHz
clock, while the ADC12H030 family is tested with an 8 MHz
clock. On request, these A/Ds go through a self calibration
process that adjusts linearity, zero and full-scale errors to
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 ob-
tained 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 the NSC MI-
CROWIRE. For voltage references see the LM4040 or
LM4041.
Applications
n
Medical instruments
n
Process control systems
n
Test equipment
Features
n
Serial I/O (MICROWIRE Compatible)
n
2, 4, or 8 channel differential or single-ended multiplexer
n
Analog input sample/hold function
n
Power down mode
n
Variable resolution and conversion rate
n
Programmable acquisition time
n
Variable digital output word length and format
n
No zero or full scale adjustment required
n
Fully tested and guaranteed with a 4.096V reference
n
0V to 5V analog input range with single 5V power
supply
n
No Missing Codes over temperature
Key Specifications
j Resolution
12-bit plus sign
j 12-bit plus sign conversion time
– ADC12H30 family
5.5 µs (max)
– ADC12030 family
8.8 µs (max)
j 12-bit plus sign throughput time
– ADC12H30 family
8.6 µs (max)
– ADC12030 family
14 µs (max)
j Integral linearity error
±1 LSB (max)
j single supply
5V ±10%
j Power consumption
33 mW (max)
– Power down
100 µW (typ)
June 2002
© 2002 National Semiconductor Corporation
DS011354
www.national.com


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