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ADC12062BIVF 其他数据使用手册 - National Semiconductor（美国国家半导体）
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National Semiconductor（美国国家半导体）
分类:
AD转换器
描述:
12位， 1兆赫， 75毫瓦的A / D转换器 12-Bit, 1 MHz, 75 mW A/D Converter
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ADC12062BIVF数据手册
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ADC12062
12-Bit, 1 MHz, 75 mW A/D Converter
with Input Multiplexer and Sample/Hold
General Description
Using an innovative multistep conversion technique, the
12-bit ADC12062 CMOS analog-to-digital converter digitizes
signals at a 1 MHz sampling rate while consuming a maxi-
mum of only 75 mW on a single +5V supply. TheADC12062
performs a 12-bit conversion in three lower-resolution “flash”
conversions, yielding a fast A/D without the cost and power
dissipation associated with true flash approaches.
The analog input voltage to the ADC12062 is tracked and
held by an internal sampling circuit, allowing high frequency
input signals to be accurately digitized without the need for
an external sample-and-hold circuit. The multiplexer output
is available to the user in order to perform additional external
signal processing before the signal is digitized.
When the converter is not digitizing signals, it can be placed
in the Standby mode; typical power consumption in this
mode is 100 µW.
Features
n Built-in sample-and-hold
n Single +5V supply
n Single channel or 2 channel multiplexer operation
n Low Power Standby mode
Key Specifications
n Sampling rate: 1 MHz (min)
n Conversion time: 740 ns (typ)
n Signal-to-Noise Ratio, f
IN
= 100 kHz: 69.5 dB (min)
n Power consumption (f
s
= 1 MHz): 75 mW (max)
n No missing codes over temperature: Guaranteed
Applications
n Digital signal processor front ends
n Instrumentation
n Disk drives
n Mobile telecommunications
n Waveform digitizers
Block Diagram
01149001
Ordering Information
Industrial (−40˚C ≤ T
A
≤ +85˚) Package
ADC12062BIVF VGZ44A Plastic Quad Flat Package
ADC12062CIV V44 Plastic Leaded Chip Carrier
ADC12062CIVF VGZ44A Plastic Quad Flat Package
June 2001
ADC12062 12-Bit, 1 MHz, 75 mW A/D Converter with Input Multiplexer and Sample/Hold
© 2001 National Semiconductor Corporation DS011490 www.national.com
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