I2C-ADC Datasheet, PDF (4/7 Pages) List of Unclassifed Manufacturers – I2C-ADCTM I2C 12-Bit, 8-CH ANALOG-TO-DIGITAL

I2C-ADC^TM I²C 12-Bit, 8-CH ANALOG-TO-DIGITAL
CONVERTER User Manual
REF pin:
The I2C-ADC can operate with an internal
2.5V reference or an external reference. If
a +5V supply is used, an external +5V
reference is required in order to provide
full dynamic range for a 0V to +VDD
analog input. This external reference can
be as low as 50mV.
I²C pins:
The I2C-ADC operates as a slave on the
I²C bus. Only two signal lines SDA and
SCL are required for I²C bus. Please refer
to I²C specification for more information.
Module Configuration
I²C address:
Default address shipped from the
manufacture is 0x90 for write and 0x91 for
read.
A1 = 0
A0 = 0
The address can be easily change by
solder the bridge between the
corresponding address pin to VCC or
GND at the bottom of the module. These
four combinations allow up to four devices
to share the same I²C bus. That is total of
32 channels.
Power-on LED:
The green LED on the module is
illuminating when the power applied. The
power-on LED is enabled from the
manufacture. It can be disabling for light
sensitive or low current requirement
application by remove the solder bridge
on “PW” at the bottom of the module.
I²C pull-up resistors:
I²C bus specification required to have pull-
up resistors on SDA and SCL pin. I2C-
ADC come with these two pull-up resistors
enabled from the manufacture. It can be
disabling when connect to I²C bus that
already have pull-up resistors by remove
the solder bridge on “PU” at the bottom of
the module.
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