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Microchip Technology Inc. • The Embedded Control Solutions Company®
MCP6S2X, Programmable Gain Amplifiers - PGAs
Microchip offers SPI™ Bus Programmable Gain
Amplifiers with Built-in Analog Multiplexer
The MCP6S21, MCP6S22, MCP6S26 and MCP6S28
Programmable Gain Amplifiers (PGAs) offer 1, 2, 6 or
8 input channels respectively and eight steps of gain.
These devices are programmable over an SPI bus and
thus add gain control and input channel selection to
the embedded control system. This is all achieved in
one simple integration that allows for considerable
greater bandwidth at a low supply current. Even greater
energy savings can be achieved by use of the shutdown
command.
The gain steps that have been provided for these
devices are; 1, 2, 4, 5, 8, 10, 16 and 32. This allows for
four decimal steps and six binary steps.
These amplifiers were designed with the embedded
control system in mind. The typical complexity of
multiple sensor systems is reduced to one amplifier
that the microcontroller can control. This reduces the
demand on microcontroller I/O and allows control over
the level gain. One superior amplifier can be used to
perform the functions of multiple amplifiers at a lower
cost.
F eatures:
• SPI Bus to Control Gain and Select Input Channel
1, 2, 6 and 8 Channel Devices
• Gain Steps of 1, 2, 4, 5, 8, 10, 16 and 32 V/V
• -3 dB Bandwidth of 2 to 12 MHz
• V
OS
< 200 µV
• Gain Error < 1%
• Rail-to-Rail Input and Output
• Low Noise: 10 nV/rHz
• Low Supply Current: 1.1 mA (typical)
• Single Supply 2.5V to 5.5V
• Industrial Temperature Range: -40°C to 85°C
• Available in a Small 8-pin MSOP Package
(MCP6S21 and MCP6S22)
