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參數(shù)資料
| 型號(hào)： | ADC12762 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | 12-Bit, 1.4 MHz, 300 mW A/D Converter with Input Multiplexer and Sample/Hold |
| 中文描述： | 12位，1.4兆赫，300毫瓦的A / D輸入多路復(fù)用器和轉(zhuǎn)換器采樣/保持 |
| 文件頁數(shù)： | 1/20頁 |
| 文件大?。?/td> | 427K |
| 代理商： | ADC12762 |
ADC12762
12-Bit, 1.4 MHz, 300 mW A/D Converter
with Input Multiplexer and Sample/Hold
General Description
Using an innovative multistep conversion technique, the
12-bit ADC12762 CMOS analog-to-digital converter digitizes
signals at a 1.4 MHz sampling rate while consuming a maxi-
mum of only 300 mW on a single +5V supply. The
ADC12762
performs
a
12-bit
lower-resolution “flash” conversions, yielding a fast A/D with-
out the cost and power dissipation associated with true flash
approaches.
The analog input voltage to the ADC12762 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. TheADC12762 features
two sample-and-hold/flash comparator sections which allow
the converter to acquire one sample while converting the
previous. This pipelining technique increases conversion
speed without sacrificing performance. The multiplexer out-
put is available to the user in order to perform additional ex-
ternal 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 250 μW.
conversion
in
three
Features
n
Built-in sample-and-hold
n
Single +5V supply
n
Single channel or 2 channel multiplexer operation
Key Specifications
n
Sampling rate
n
Conversion time
n
SNR, f
IN
= 100 kHz
n
Power dissipation (f
s
= 1.4 MHz)
n
No missing codes over temperature
1.4 MHz (min)
593 ns (typ)
67.5 dB (min)
300 mW (max)
Guaranteed
Applications
n
CCD image scanners
n
Digital signal processor front ends
n
Instrumentation
n
Disk drives
n
Mobile telecommunications
n
Waveform digitizers
ADC12762 Block Diagram
Ordering Information
Commercial (0C
≤
T
A
≤
+70C)
ADC12762CCV
ADC12062EVAL
Package
V44 Plastic Leaded Chip Carrier
Evaluation Board
TRI-STATE
is a registered trademark of National Semiconductor Corporation.
DS012811-1
June 1999
A
1999 National Semiconductor Corporation
DS012811
www.national.com
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| ADC12762CCV | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:12-Bit, 1.4 MHz, 300 mW A/D Converter with Input Multiplexer and Sample/Hold |
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