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ADC0831CCN Просмотр технического описания (PDF) - Micro Linear Corporation

Номер в каталогеADC0831CCN Micro-Linear
Micro Linear Corporation Micro-Linear
Компоненты ОписаниеSerial I/O 8-Bit A/D Converters with Multiplexer Options
ADC0831CCN Datasheet PDF : 26 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
May 1997
ML2281, ML2282*,
ML2284#, ML2288#
Serial I/O 8-Bit A/D Converters with
Multiplexer Options
GENERAL DESCRIPTION
The ML2281 family are 8-bit successive approximation
A/D converters with serial I/O and configurable input
multiplexers with up to 8 input channels.
All errors of the sample-and-hold, incorporated on the
ML2281 family are accounted for in the analog-to-digital
converters accuracy specification.
The voltage reference can be externally set to any value
between GND and VCC, thus allowing a full conversion
over a relatively small voltage span if desired.
The ML2281 family is an enhanced double polysilicon
CMOS pin compatible second source for the ADC0831,
ADC0832, ADC0834, and ADC0838 A/D converters. The
ML2281 series enhancements are faster conversion time,
true sample-and-hold function, superior power supply
rejection, improved AC common mode rejection, faster
digital timing, and lower power dissipation. All parameters
are guaranteed over temperature with a power supply
voltage of 5V ±10%.
BLOCK DIAGRAM
ML2281
CONTROL
CS
AND
CLK
TIMING
OUTPUT
DO
SHIFT-REGISTER
FEATURES
s Conversion time: 6µs
s Total unadjusted error: ±1/2LSB or ±1LSB
s Sample-and-hold: 375ns acquisition
s 2, 4 or 8-input multiplexer options
s 0 to 5V analog input range with single 5V
power supply
s Operates ratiometrically or with up to 5V
voltage reference
s No zero or full-scale adjust required
s ML2281 capable of digitizing a 5V, 40kHz sine wave
s Low power: 12.5mW MAX
s Superior pin compatible replacement for ADC0831,
ADC0832, ADC0834, and ADC0838
s Analog input protection: 25mA (min) per input
s Now in 8-Pin SOIC Package (ML2281, ML2282)
(* Indicates Part is Obsolete)
(# Indicates Part is End Of Life as Of July 1, 2000)
ML2288 (8-Channel SE or 4-Channel Diff Multiplexer)
ML2284 (4-Channel SE or 2-Channel Diff Multiplexer)
ML2284 (2-Channel SE or 1-Channel Diff Multiplexer)
4-BIT
INPUT
SHIFT-REGISTER
CONTROL
AND
TIMING
DI
SARS
CLK
CS
VIN+
A/D WITH SAMPLE & HOLD FUNCTION
+Σ
8pF
+
COMP
SUCCESSIVE
APPROXIMATION
REGISTER
VIN–
8pF
D/A
CONVERTER
VREF
VCC
GND
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
COMMON
OUTPUT
DO
SHIFT-REGISTER
SE
A/D
CONVERTER
WITH
SAMPLE & HOLD
FUNCTION
DGND
SHUNT
REGULATOR
AGND VREF
VCC
V+
1
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