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MCP3204 Datasheet(Fiches technique) 1 Page - Microchip Technology

Numéro de pièce MCP3204
Description  2.7V 4-Channel/8-Channel 12-Bit A/D Converters with SPI Serial Interface
Télécharger  20 Pages
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Fabricant  MICROCHIP [Microchip Technology]
Site Internet  http://www.microchip.com
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 1 page
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© 1999 Microchip Technology Inc.
Preliminary
DS21298B-page 1
MCP3204/3208
FEATURES
• 12-bit resolution
• ± 1 LSB max DNL
• ± 1 LSB max INL (MCP3204/3208-B)
• ± 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® 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, 2µA max.
- 400 µA max. active current at 5V
• Industrial temp range: -40°C to +85°C
• Available in PDIP, SOIC and TSSOP packages
APPLICATIONS
• Sensor Interface
• Process Control
• Data Acquisition
• Battery Operated Systems
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 ±1 LSB, and Integral Nonlinearity (INL) is
offered in ±1 LSB (MCP3204/3208-B) and ±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
320µA, 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.
PACKAGE TYPES
FUNCTIONAL BLOCK DIAGRAM
V
DD
CLK
D
OUT
1
2
3
4
14
13
12
11
10
9
8
5
6
7
V
REF
D
IN
CH0
CH1
CH2
CH3
CS/SHDN
DGND
AGND
NC
V
DD
CLK
D
OUT
1
2
3
4
16
15
14
13
12
11
10
9
5
6
7
8
V
REF
D
IN
CS/SHDN
DGND
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
NC
AGND
PDIP, SOIC, TSSOP
PDIP, SOIC
Comparator
Sample
and
Hold
12-Bit SAR
DAC
Control Logic
CS/SHDN
V
REF
V
SS
V
DD
CLK
D
OUT
Shift
Register
CH0
Channel
Mux
Input
CH1
CH7*
*Note: Channels 5-7 available on MCP3208 Only
D
IN
2.7V 4-Channel/8-Channel 12-Bit A/D Converters
with SPI® Serial Interface




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