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MCP3204 Datasheet

  • MCP3204

  • 2.7V 4-Channel/8-Channel 12-Bit A/D Converters with SPI Seri...

  • 892.14KB

  • 40頁

  • Microchip   Microchip

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MCP3204/3208
2.7V 4-Channel/8-Channel 12-Bit A/D Converters
with SPI
廬
Serial Interface
FEATURES
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12-bit resolution
鹵 1 LSB max DNL
鹵 1 LSB max INL (MCP3204/3208-B)
鹵 2 LSB max INL (MCP3204/3208-C)
4 (MCP3204) or 8 (MCP3208) input channels
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
- 500 nA typical standby current, 2碌A max.
- 400 碌A max. active current at 5V
Industrial temp range: -40擄C to +85擄C
Available in PDIP, SOIC and TSSOP packages
PACKAGE TYPES
PDIP, SOIC, TSSOP
CH0
CH1
CH2
CH3
NC
NC
DGND
1
2
3
4
5
6
7
14
13
12
11
10
9
8
V
DD
V
REF
AGND
CLK
D
OUT
D
IN
CS/SHDN
MCP3204
PDIP, SOIC
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
V
DD
V
REF
AGND
CLK
D
OUT
D
IN
CS/SHDN
DGND
MCP3208
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APPLICATIONS
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Sensor Interface
Process Control
Data Acquisition
Battery Operated Systems
FUNCTIONAL BLOCK DIAGRAM
V
DD
V
REF
CH0
CH1
V
SS
DESCRIPTION
The Microchip Technology Inc. MCP3204/3208
devices are successive approximation 12-bit Ana-
log-to-Digital (A/D) Converters with on-board sample
and hold circuitry. The MCP3204 is programmable to
provide two pseudo-differential input pairs or four sin-
gle-ended inputs. The MCP3208 is programmable to
provide four pseudo-differential input pairs or eight sin-
gle-ended inputs. Differential Nonlinearity (DNL) is
specified at 鹵1 LSB, and Integral Nonlinearity (INL) is
offered in 鹵1 LSB (MCP3204/3208-B) and 鹵2 LSB
(MCP3204/3208-C) versions. Communication with the
devices is done using a simple serial interface compat-
ible with the SPI protocol. The devices are capable of
conversion rates of up to 100ksps. The MCP3204/3208
devices operate 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
320碌A, respectively. The MCP3204 is offered in 14-pin
PDIP, 150mil SOIC and TSSOP packages, and the
MCP3208 is offered in 16-pin PDIP and SOIC pack-
ages.
Input
Channel
Mux
DAC
Comparator
CH7*
Sample
and
Hold
Control Logic
12-Bit SAR
Shift
Register
CS/SHDN D
IN
CLK
D
OUT
*Note: Channels 5-7 available on MCP3208 Only
漏
1999 Microchip Technology Inc.
Preliminary
DS21298B-page 1

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