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DAC7573 Datasheet

  • DAC7573

  • QUAD, 12-BIT, LOW-POWER, VOLTAGE OUTPUT, I2C INTERFACE DIGIT...

  • 758.85KB

  • 30頁

  • TI

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DAC7573
SLAS398 鈥?SEPTEMBER 2003
QUAD, 12-BIT, LOW-POWER, VOLTAGE OUTPUT,
I
2
C INTERFACE DIGITAL-TO-ANALOG CONVERTER
FEATURES
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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 Sixteen DAC7573s
Synchronous Update Support for up to 64
Channels
Operation From -40擄C to 105擄C
Small 16 Lead TSSOP Package
DESCRIPTION
The DAC7573 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 DAC7573 utilizes an I
2
C 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 to the device. The
DAC7573 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 3 mW at V
DD
=5 V reducing to 1 碌W in power-down
mode.
The DAC7573 is available in a 16-lead TSSOP pack-
age.
V
REF
H
APPLICATIONS
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Process Control
Data Acquisition Systems
Closed-Loop Servo Control
PC Peripherals
Portable Instrumentation
V
DD
IOV
DD
Data
Buffer A
DAC
Register A
DAC A
V
OUT
A
V
OUT
B
V
OUT
C
Data
Buffer D
18
DAC
Register D
DAC D
V
OUT
D
SCL
SDA
I
2
C Block
8
Buffer
Control
Register
Control
Power鈭扗own
Control Logic
Resistor
Network
A0
A1
GND
A2
A3
LDAC
V
REF
L
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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