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SP7800A
12-Bit 3碌s Sampling A/D Converter
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s
s
s
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333k Samples Per Second
Standard
鹵10V
and
鹵5V
Input
No Missing Codes Over Temperature
AC Performance Over Temperature
71.5dB Signal鈥搕o鈥揘oise Ratio at Nyquist
85dB Spurious鈥揻ree Dynamic Range at
49KHz
鈥?1dB Total Harmonic Distortion at
49KHz
Internal Sample/Hold, Reference,
Clock, and 3-State Outputs
Power Dissipation: 90mW
24鈥揚(yáng)in Narrow DIP and 24鈥揕ead SOIC
Enhanced Single (+5V) Supply Version of
ADS7800
DESCRIPTION鈥?/div>
The
SP7800A
is a complete 12-bit sampling A/D converter using state鈥搊f鈥搕he鈥揳rt CMOS structures.
It contains a complete 12鈥揵it successive approximation A/D converter with internal sample/hold,
reference, clock, digital interface for microprocessor control, and three鈥搒tate output drivers. AC and
DC performance are completely specified. Two grades based on linearity and dynamic performance
are available to provide the optimum price/performance fit in a wide range of applications.
CS
R/C HBE
Control
Logic
IBIP
鹵10V
IN
鹵5V
IN
Internal
Ref
Clock
SAR
Output
Latches
And
Three
State
Drivers
Comparator
BUSY
CDAC
.....
.....
.....
.....
Three
State
Parallel
Output
Data
Bus
SP7800ADS/02
SP7800A 12-Bit 3碌s Sampling A/D Converter
漏 Copyright 2000 Sipex Corporation
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