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LM12454/LM12458/LM12H458,pdf d
消耗积分:5 |
格式:rar |
大小:551 |
2009-10-12
张丽
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The LM12458, and LM12H458 are highly integrated Data
Acquisition Systems. Operating on just 5V, they combine a
fully-differential self-calibrating (correcting linearity and zero
errors) 13-bit (12-bit + sign) analog-to-digital converter
(ADC) and sample-and-hold (S/H) with extensive analog
functions and digital functionality. Up to 32 consecutive conversions,
using two’s complement format, can be stored in
an internal 32-word (16-bit wide) FIFO data buffer. An internal
8-word RAM can store the conversion sequence for up to
eight acquisitions through the LM12(H)458’s eight-input multiplexer.
The obsolete LM12454 has a four-channel multiplexer,
a differential multiplexer output, and a differential S/H
input. The LM12(H)458 can also operate with 8-bit + sign
resolution and in a supervisory “watchdog” mode that compares
an input signal against two programmable limits.
Acquisition Systems. Operating on just 5V, they combine a
fully-differential self-calibrating (correcting linearity and zero
errors) 13-bit (12-bit + sign) analog-to-digital converter
(ADC) and sample-and-hold (S/H) with extensive analog
functions and digital functionality. Up to 32 consecutive conversions,
using two’s complement format, can be stored in
an internal 32-word (16-bit wide) FIFO data buffer. An internal
8-word RAM can store the conversion sequence for up to
eight acquisitions through the LM12(H)458’s eight-input multiplexer.
The obsolete LM12454 has a four-channel multiplexer,
a differential multiplexer output, and a differential S/H
input. The LM12(H)458 can also operate with 8-bit + sign
resolution and in a supervisory “watchdog” mode that compares
an input signal against two programmable limits.
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