MCP6S21/2/6/8
M
Single-Ended, Rail-to-Rail I/O, Low Gain PGA
Features
Description
• 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)
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
eight channel MCP6S28 is available in 16-pin PDIP
and SOIC packages. All parts are fully specified from
-40°C to +85°C.
• 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
• A/D Converter Driver
• Multiplexed Analog Applications
• Data Acquisition
• Industrial Instrumentation
• Test Equipment
• Medical Instrumentation
Block Diagram
VDD
CH0
+
Package Types
CH1
VOUT
CH2
-
MCP6S21
MCP6S22
CH3
MUX
CH4
PDIP, SOIC, MSOP
PDIP, SOIC, MSOP
CH5
VDD
8
VOUT
VDD VOUT
1
2
3
4
8
1
2
3
4
RF
CH6
CH7
8
CH0
VREF
VSS
7 SCK CH0
6
5
7 SCK
6 SI
Gain
Switches
SI
CS
CH1
VSS
CS
SI
RG
5 CS
SPI™
Logic
SO
SCK
MCP6S26
PDIP, SOIC, TSSOP
MCP6S28
PDIP, SOIC
POR
VOUT
V
14
V
VOUT
1
CH0 2
CH1 3
CH2 4
1
16
VREF
DD
VSS
DD
13 SCK
12 SO
11 SI
CH0 2
CH1 3
15 SCK
14 SO
13 SI
4
CH2
CH3 5
CH3 5
CH4 6
CH5 7
10 CS
12 CS
VSS
VSS
6
9
CH4
11
VREF
8
V
CH5 7
CH6 8
10
REF
9 CH7
2003 Microchip Technology Inc.
DS21117A-page 1