M
MCP6S21/2/6/8
Single-Ended, Rail-to-Rail I/O, Low Gain PGA
Features
? Multiplexed Inputs: 1, 2, 6 or 8 channels
? 8 Gain Selections:
- +1, +2, +4, +5, +8, +10, +16 or +32 V/V
? Serial Peripheral Interface (SPI?)
? Rail-to-Rail Input and Output
? Low Gain Error: ±1% (max)
? Low Offset: ±275 μV (max)
? High Bandwidth: 2 to 12 MHz (typ)
? Low Noise: 10 nV/ √ Hz @ 10 kHz (typ)
? Low Supply Current: 1.0 mA (typ)
? Single Supply: 2.5V to 5.5V
Typical Applications
Description
The Microchip Technology Inc. MCP6S21/2/6/8 are
analog Programmable Gain Amplifiers (PGA). They
can be configured for gains from +1 V/V to +32 V/V and
the input multiplexer can select one of up to eight chan-
nels through an SPI port. The serial interface can also
put the PGA into shutdown to conserve power. These
PGAs are optimized for high speed, low offset voltage
and single-supply operation with rail-to-rail input and
output capability. These specifications support single
supply applications needing flexible performance or
multiple inputs.
The one channel MCP6S21 and the two channel
MCP6S22 are available in 8-pin PDIP, SOIC and
MSOP packages. The six channel MCP6S26 is avail-
able in 14-pin PDIP, SOIC and TSSOP packages. The
?
?
?
A/D Converter Driver
Multiplexed Analog Applications
Data Acquisition
eight channel MCP6S28 is available in 16-pin PDIP
and SOIC packages. All parts are fully specified from
-40°C to +85°C.
?
?
?
Industrial Instrumentation
Test Equipment
Medical Instrumentation
Block Diagram
V DD
Package Types
MCP6S21
PDIP, SOIC, MSOP
V OUT 1          8 V DD
MCP6S22
PDIP, SOIC, MSOP
V OUT 1 8 V DD
CH0
CH1
CH2
CH3
CH4
CH5
CH6
MUX
+
-
R F
V OUT
CH0 2
7 SCK
CH0 2
7 SCK
CH7
Gain
8
V REF 3
V SS 4
6 SI
5 CS
CH1 3
V SS 4
6 SI
5 CS
CS
SI
SO
SCK
SPI?
Logic
Switches
R G
MCP6S26
PDIP, SOIC, TSSOP
MCP6S28
PDIP, SOIC
POR
V OUT 1
CH0 2
CH1 3
CH2 4
CH3 5
CH4 6
CH5 7
14 V DD
13 SCK
12 SO
11 SI
10 CS
9 V SS
8 V REF
V OUT 1
CH0 2
CH1 3
CH2 4
CH3 5
CH4 6
CH5 7
16 V DD
15 SCK
14 SO
13 SI
12 CS
11 V SS
10 V REF
V SS
V REF
CH6 8
? 2003 Microchip Technology Inc.
9 CH7
DS21117A-page 1
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