Mikroe MIKROE-2859 GainAMP 2 click
Mikroe MIKROE-2859 GainAMP 2 Click is a 6-channel programmable gain amplifier for amplifying signals on any of the 6 non-inverting input channels. This is achieved for up to 32x in eight discrete steps. The gain can be set using the SPI communication interface. Mikroe MIKROE-2859 GainAMP 2 Click has a high signal to noise ratio, a good bandwidth, and very low gain error. These features make it ideal for amplifying sensitive low signals from various sources.
The GainAMP click can be used to adjust the dynamic range of the ADC input signal due to its low noise compared to most ADCs. The GainAMP 2 can also be used to expand the analog input capacity of the MCU with additional gain control for each source. This click can be easily daisy-chained if more than six inputs are needed - or to achieve other gain ratios, not possible with a single device.
GainAMP 2 click uses the Microchip MCP6S21 programmable gain amplifier (PGA). This integrated circuit features six multiplexed non-inverting inputs, with a gain that can be programmed via the SPI interface for each input individually. The channels CH0 to CH5 are the six input channels, connected to the external signal sources. The internal multiplexer selects the channel that is gained and sent to the output pin. The gain stage of the MCP6S21 has eight different discrete steps of gain: 1, 2, 4, 5, 8, 10, 16 and 32V/V.
Features
- Amplifier type
- MCP6S26 on-board module
- Six multiplexed non-inverting analog input channels
- Programmable gain
- Rail-to-rail inputs and outputs with no phase shifting
- Very good bandwidth
- Low THD
- Good SNR
- SPI and analog interfaces
- 3.3V or 5V input voltage
- M Click board size 42.9mm x 25.4mm)
Applications
- Sensitive signal amplification
- Analog input expander for a microcontroller
- Input-amplifying stage of an analog-to-digital converter
Videos
On the board
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