DAC7574IDGSR Datasheet, PDF (1/35 Pages) Texas Instruments – QUAD, 12-BIT, LOW-POWER, VOLTAGE OUTPUT, I2C INTERFACE DIGITAL-TO-ANALOG CONVERTER

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QUAD, 12-BIT, LOW-POWER, VOLTAGE OUTPUT,
I²C INTERFACE DIGITAL-TO-ANALOG CONVERTER
DAC7574
SLAS375 – JUNE 2003
FEATURES
• Micropower Operation: 600 µA at 5 V V_DD
• Power-On Reset to Zero
• +2.7 V to +5.5 V Analog Power Supply
• 12-Bit Monotonic
• I²C™ Interface Up to 3.4 Mbps
• Data Transmit Capability
• On-Chip Output Buffer Amplifier, Rail-to-Rail
Operation
• Double-Buffered Input Register
• Address Support for up to Four DAC7574s
• Synchronous Update Support for up to 16
Channels
• Operation From -40°C to 105°C
• Small 10 Lead MSOP Package
APPLICATIONS
• Process Control
• Data Acquisition Systems
• Closed-Loop Servo Control
• PC Peripherals
• Portable Instrumentation
V_DD
DESCRIPTION
The DAC7574 is a low-power, quad channel, 12-bit
buffered voltage output DAC. Its on-chip precision out-
put amplifier allows rail-to-rail output swing to be
achieved. The DAC7574 utilizes an I²C compatible two
wire serial interface supporting high-speed interface
mode with address support of up to four DAC7574s for
a total of 16 channels on the bus.
The DAC7574 uses V_DD and GND to set the output
range of the DAC. The DAC7574 incorporates a
power-on-reset circuit that ensures that the DAC output
powers up at zero volts and remains there until a valid
write takes place to the device. The DAC7574 contains
a power-down feature, accessed via the internal control
register, that reduces the current consumption of the
device to 200 nA at 5 V.
The low power consumption of this part in normal
operation makes it ideally suited to portable battery
operated equipment. The power consumption is less
than 3mW at V_DD = 5 V reducing to 1 µW in power-down
mode.
The DAC7574 is available in a 10-lead MSOP package.
Data
Buffer A
DAC
DAC A
Register A
Data
Buffer D
DAC
Register D
DAC D
14
V_OUTA
V_OUTB
V_OUTC
V_OUTD
SCL
SDA
I²C Block
Buffer
Control
8
Register
Control
Power - Down
Control Logic
Resistor
Network
A0 A1 GND
I2C is a trademark of Philips Corporation.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments
semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily in-
clude testing of all parameters.
Copyright © 2003, Texas Instruments Incorporated