SIP127: 12 Bit ADC Module - I2C Chip I2C & SMBUS, Slave IC's, Host Adaptors, RS232 / USB a
12 Bit ADC Module with +/-10V Range 1.1 Input Multiplexor If you want to measure lower voltages with the external 2.5V reference, then the MAX128 is a better choice. VRef RB=00 RB=10 RB=01 RB=11 MAX127 Int 0-5 0-10 +/-5 +/-10 MAX127 Ext 2.5V 0-3.052 0 ......