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MCP3202 Datasheet

  • MCP3202

  • 2.7V Dual Channel 12-Bit A/D Converter with SPI Serial Inter...

  • 770.77KB

  • 32頁

  • Microchip   Microchip

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MCP3202
2.7V Dual Channel 12-Bit A/D Converter
with SPI
廬
Serial Interface
FEATURES
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12-bit resolution
鹵1 LSB max DNL
鹵1 LSB max INL (MCP3202-B)
鹵2 LSB max INL (MCP3202-C)
Analog inputs programmable as single-ended or
pseudo-differential pairs
On-chip sample and hold
SPI
廬
serial interface (modes 0,0 and 1,1)
Single supply operation: 2.7V - 5.5V
100ksps max. sampling rate at V
DD
= 5V
50ksps max. sampling rate at V
DD
= 2.7V
Low power CMOS technology
- 500nA typical standby current, 5碌A(chǔ) max.
- 550碌A(chǔ) max. active current at 5V
Industrial temp range: -40擄C to +85擄C
8-pin PDIP SOIC and TSSOP packages
PACKAGE TYPES
PDIP
CS/SHDN
CH0
CH1
V
SS
1
2
3
4
8
7
6
5
V
DD
/V
REF
CLK
D
OUT
D
IN
MCP3202
SOIC, TSSOP
CS/SHDN
CH0
CH1
V
SS
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1
2
3
4
8
7
6
5
MCP3202
V
DD
/V
REF
CLK
D
OUT
D
IN
APPLICATIONS
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Sensor Interface
Process Control
Data Acquisition
Battery Operated Systems
FUNCTIONAL BLOCK DIAGRAM
V
DD
V
SS
DESCRIPTION
The Microchip Technology Inc. MCP3202 is a succes-
sive approximation 12-bit Analog-to-Digital (A/D) Con-
verter with on-board sample and hold circuitry. The
MCP3202 is programmable to provide a single
pseudo-differential input pair or dual single-ended
inputs. Differential Nonlinearity (DNL) is specified at
鹵1 LSB, and Integral Nonlinearity (INL) is offered in
鹵1 LSB (MCP3202-B) and 鹵2 LSB (MCP3202-C) ver-
sions. Communication with the device is done using a
simple serial interface compatible with the SPI protocol.
The device is capable of conversion rates of up to
100ksps at 5V and 50ksps at 2.7V. The MCP3202
device operates over a broad voltage range (2.7V -
5.5V). Low current design permits operation with typi-
cal standby and active currents of only 500nA and
375碌A(chǔ), respectively. The MCP3202 is offered in 8-pin
PDIP, TSSOP and 150mil SOIC packages.
CH0
CH1
Input
Channel
Mux
DAC
Comparator
Sample
and
Hold
Control Logic
12-Bit SAR
Shift
Register
CS/SHDN
D
IN
CLK
D
OUT
漏
1999 Microchip Technology Inc.
Preliminary
DS21034A-page 1

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