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Micropower
Operation: 600 碌A at 5 V V
DD
Power-On Reset to Zero
+2.7 V to +5.5 V Analog Power Supply
12-Bit Monotonic
I
2
C鈩?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擄C to 105擄C
Small 10 Lead MSOP Package
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 I
2
C 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 碌W in power-down
mode.
The DAC7574 is available in a 10-lead MSOP package.
APPLICATIONS
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Process Control
Data Acquisition Systems
Closed-Loop Servo Control
PC Peripherals
Portable Instrumentation
V
DD
Data
Buffer A
DAC
Register A
DAC A
V
OUT
A
V
OUT
B
V
OUT
C
Data
Buffer D
14
DAC
Register D
DAC D
V
OUT
D
SCL
SDA
I
2
C Block
8
Buffer
Control
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 漏 2003, Texas Instruments Incorporated
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