TC1322 Datasheet, PDF (1/16 Pages) Microchip Technology – 12-Bit Digital-to-Analog Converter with Two-Wire Interface

TC1322
12-Bit Digital-to-Analog Converter with Two-Wire Interface
Features
• 12-Bit Digital-to-Analog Converter
• 2.7-5.5V Single Supply Operation
• Simple SMBus/I²C^TM Serial Interface
• Low Power: 350µA Operation, 0.5µA Shutdown
• 8-Pin SOIC and 8-Pin MSOP Packages
Applications
• Programmable Voltage Sources
• Digital Controlled Amplifiers/Attenuators
• Process Monitoring and Control
Device Selection Table
Part
Number
Package
Temperature Range
TC1322EOA 8-Pin SOIC (Narrow) -40°C to +85°C
TC1322EUA
8-Pin MSOP
-40°C to +85°C
General Description
The TC1322 is a serially accessible 12-bit voltage out-
put digital-to-analog converter (DAC). The DAC pro-
duces an output voltage that ranges from ground to an
externally supplied reference voltage. It operates from
a single power supply that can range from 2.7V to 5.5V,
making it ideal for a wide range of applications. Built
into the part is a Power-on Reset function that ensures
that the device starts at a known condition.
Communication with the TC1322 is accomplished via a
simple 2-wire SMBus/I²C compatible serial port with
the TC1322 acting as a slave only device. The host can
enable the SHDN bit in the CONFIG register to activate
the Low Power Standby mode.
Package Type
8-Pin MSOP and
8-Pin SOIC (Narrow)
V_{REF 1}
SDA 2
SCL 3
GND 4
TC1322
8 ^VDD
7 _DAC-OUT
6 NC
5 V_OUT
Typical Application
V_IN
V_REF
(1)
(8) ^VDD
DAC
TC1322
V_OUT
(5)
–
V_ADJUST
+
Serial Port
(3)
(2)
SCLK SDAT
Microcontroller
© 2002 Microchip Technology Inc.
DS21388B-page 1