I2C-ADC Gravitech, I2C-ADC Datasheet - Page 4

• Manufacturer Part Number: I2C-ADC
• Description: Data Conversion IC Development Tools I2C 12-BIT 8-CH ANALOG-DIGITAL CONV
• Manufacturer: Gravitech
• Type: ADCr

Specifications of I2C-ADC

• Rohs: yes
• Product: Development Boards
• Tool Is For Evaluation Of: ADS7828
• Interface Type: I2C
• Operating Supply Voltage: 2.7 V to 5 V
• Description/function: 12-bit, 8 channel analog-to-digital converter
• Dimensions: 0.7 in x 0.7 in

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.
The I2C-ADC operates as a slave on the
I
SCL are required for I
to I
Default
manufacture is 0x90 for write and 0x91 for
read.
A1 = 0
A0 = 0
The address can be easily change by
solder
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 I
32 channels.
2
I
REF pin:
I
C bus. Only two signal lines SDA and
2
2
C address:
C pins:
2
C specification for more information.
Module Configuration
I2C-ADC
the
address
Copyright © 2007 MicroResearch
bridge
GRAVITECH GROUP
2
TM
C bus. That is total of
shipped
2
C bus. Please refer
I
CONVERTER User Manual
2
C 12-Bit, 8-CH ANALOG-TO-DIGITAL
between
from
the
the
WWW.GRAVITECH.US
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.
I
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 I
already have pull-up resistors by remove
the solder bridge on “PU” at the bottom of
the module.
Power-on LED:
2
I
C bus specification required to have pull-
2
C pull-up resistors:
2
C bus that