DAC7573_16 Datasheet, PDF (1/35 Pages) Texas Instruments – QUAD, 12-BIT, LOW-POWER, VOLTAGE OUTPUT INTERFACE DIGITAL-TO-ANALOG CONVERTER

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DAC7573
SLAS398 – SEPTEMBER 2003
2^{QUAD, 12-BIT, LOW-POWER, VOLTAGE OUTPUT,}
I C INTERFACE DIGITAL-TO-ANALOG CONVERTER
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 Sixteen DAC7573s
• Synchronous Update Support for up to 64
Channels
• Operation From –40°C to 105°C
• Small 16 Lead TSSOP Package
APPLICATIONS
• Process Control
• Data Acquisition Systems
• Closed-Loop Servo Control
• PC Peripherals
• Portable Instrumentation
V_DD IOV_DD
DESCRIPTION
The DAC7573 is a low-power, quad channel, 12-bit
buffered voltage output DAC. Its on-chip precision
output amplifier allows rail-to-rail output swing to be
achieved. The DAC7573 utilizes an I²C compatible
two wire serial interface supporting high-speed
interface mode with address support of up to sixteen
DAC7573s for a total of 64 channels on the bus.
The DAC7573 requires an external reference voltage
to set the output range of the DAC. The DAC7573
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 in the
device. The DAC7573 contains a power-down fea-
ture, 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 3 mW at V_DD=5 V reducing to 1 µW in
power-down mode.
The DAC7573 is available in a 16-lead TSSOP
package.
V_REFH
Data
DAC
DAC A
Buffer A Register A
Data
DAC
DAC D
Buffer D Register D
18
V_OUTA
V_OUTB
V_OUTC
V_OUTD
SCL
SDA
I²C
Block
Buffer
Control
8
Register
Control
A0 A1 GND
A2 A3 LDAC
V_REFL
Power-Down
Control Logic
Resistor
Network
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.
I²C is a trademark of Philips Corporation.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2003, Texas Instruments Incorporated