This is a great board to have if you need to expand the analog pins you're using.
This module has 19 pins:
Left Side:
VEE: Negative power supply (Can be left unconnected)
VCC: Module power supply – 5V
GND: Ground
Z: Output signal
S0-2: Selecting one of the 8 analog input pins as the final output signal
E: Enable pin (Active Low)
Right Side:
VEE: Negative power supply (Can be left unconnected)
VCC: Module power supply – 5V
GND: Ground
Y0-7: Analog inputs
The switch features three digital select inputs (S0, S1 and S2), eight independent inputs/outputs (Yn), a common input/output (Z) and a digital enable input (E). When E is HIGH, the switches are turned off. Inputs include clamp diodes.
This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.
Features
Wide analog input voltage range from -5 V to +5 V
Complies with JEDEC standard no. 7A
Low ON resistance: 80 ohm (typical) at VCC - VEE = 4.5 V 70 ohm(typical) at VCC - VEE = 6.0 V 60 ohm(typical) at VCC - VEE = 9.0 V
Logic level translation: to enable 5 V logic to communicate with±5 V analog signals
Typical ‘break before make’ built-in
This is a great board to have if you need to expand the I2C addresses you're using.
