DAC6574 Datasheet, PDF (1/30 Pages) Texas Instruments – QUAD, 10-BIT, LOW-POWER, VOLTAGE OUTPUT, IC INTERFACE DIGITAL-TO-ANALOG CONVERTER

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DAC6574
SLAS408 – DECEMBER 2003
2^{QUAD, 10-BIT, LOW-POWER, VOLTAGE OUTPUT,}
I C INTERFACE DIGITAL-TO-ANALOG CONVERTER
FEATURES
• Micropower Operation: 500 µA at 3 V V_DD
• Fast Update Rate: 188 kSPS
• Per-channel Power-down Capability
• Power-On Reset to Zero
• 2.7-V to 5.5-V Analog Power Supply
• 10-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 DAC6574s
• 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 DAC6574 is a low-power, quad channel, 10-bit
buffered voltage output DAC. Its on-chip precision
output amplifier allows rail-to-rail output swing to be
achieved. The DAC6574 utilizes an I²C compatible
two wire serial interface supporting high-speed
interface mode with address support of up to four
DAC6574s for a total of 16 channels on the bus.
The DAC6574 uses V_DD and GND to set the output
range of the DAC. The DAC6574 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 DAC6574
contains a per-channel power-down feature, ac-
cessed 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.
TI offers a variety of data converters with I²C
interface. See DACx57x family of 16/12/10/8 bit,
single and quad channel DACs. Also see ADS7823
and ADS1100, 12-bit octal channel and 16-bit single
channel ADCs.
Data
Buffer A
DAC
Register A ^{DAC 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
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