MCP3204 Microchip Technology, MCP3204 Datasheet
MCP3204
Manufacturer Part Number
MCP3204
Description
2.7V 4-Channel/8-Channel 12-Bit A/D Converters with SPI Serial Interface
Manufacturer
Microchip Technology
Datasheet
1.MCP3204.pdf
(20 pages)
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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
• On-chip sample and hold
• SPI
• Single supply operation: 2.7V - 5.5V
• 100ksps max. sampling rate at V
• 50ksps max. sampling rate at V
• Low power CMOS technology
• 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
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.
1999 Microchip Technology Inc.
pseudo differential pairs
- 500 nA typical standby current, 2µA max.
- 400 µA max. active current at 5V
®
Microchip
serial interface (modes 0,0 and 1,1)
2.7V 4-Channel/8-Channel 12-Bit A/D Converters
Technology
Inc.
with SPI
DD
DD
= 2.7V
= 5V
MCP3204/3208
®
Preliminary
Serial Interface
MCP3204/3208
PACKAGE TYPES
FUNCTIONAL BLOCK DIAGRAM
PDIP, SOIC, TSSOP
PDIP, SOIC
CH7*
CH0
CH1
*Note: Channels 5-7 available on MCP3208 Only
Channel
Input
Mux
Sample
Hold
and
DGND
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
CS/SHDN
CH0
CH1
CH2
CH3
NC
NC
1
2
3
4
5
6
7
8
Control Logic
1
2
3
4
5
6
7
DAC
V
REF
D
Comparator
IN
16
15
14
13
12
11
10
14
13
12
11
10
9
9
8
CLK
V
V
AGND
CLK
D
D
CS/SHDN
DGND
V
V
AGND
CLK
D
D
CS/SHDN
REF
DD
OUT
IN
REF
DD
OUT
IN
DS21298B-page 1
12-Bit SAR
Register
V
D
Shift
DD
OUT
V
SS
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