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LM12L458,pdf datasheet (12-Bit
消耗积分:2 |
格式:rar |
大小:555 |
2009-10-12
刘伟
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The LM12L458 is a highly integrated 3.3V Data Acquisition
System. It combines a fully-differential self-calibrating (correcting
linearity and zero errors) 13-bit (12-bit + sign) analogto-
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
LM12L458’s eight-input multiplexer. The LM12L458 can also
operate with 8-bit + sign resolution and in a supervisory
“watchdog” mode that compares an input signal against two
programmable limits. Programmable acquisition times and
conversion rates are possible through the use of internal
clock-driven timers.
System. It combines a fully-differential self-calibrating (correcting
linearity and zero errors) 13-bit (12-bit + sign) analogto-
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
LM12L458’s eight-input multiplexer. The LM12L458 can also
operate with 8-bit + sign resolution and in a supervisory
“watchdog” mode that compares an input signal against two
programmable limits. Programmable acquisition times and
conversion rates are possible through the use of internal
clock-driven timers.
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