鈥?/div>
Micropower Operation: 140 碌A @ 5 V
Power-On Reset to Zero
+2.7-V to +5.5 V-Power Supply
Specified Monotonic by Design
Settling Time: 10 碌s to
鹵0.003%FS
I
2
C鈩?Interface up to 3.4 Mbps
On-Chip Output Buffer Amplifier, Rail-to-Rail
Operation
Double-Buffered Input Register
Address Support for up to Two DAC7571s
Small 6 Lead SOT Package
Operation From 鈥?0擄C to 105擄C
2
DESCRIPTION
The DAC7571 is a low-power, single channel, 12-bit
buffered voltage output DAC. Its on-chip precision
output amplifier allows rail-to-rail output swing to be
achieved. The DAC7571 utilizes an I
2
C compatible
two wire serial interface that operates at clock rates
up to 3.4 Mbps with address support of up to two
DAC7571s on the same data bus.
The output voltage range of the DAC is set to V
DD
.
The DAC7571 incorporates a power-on-reset circuit
that ensures that the DAC output powers up at zero
volts and remains there until a valid write to the
device takes place. The DAC7571 contains a
power-down feature, accessed via the internal control
register, that reduces the current consumption of the
device to 50 nA at 5 V.
The low power consumption of this part in normal
operation makes it ideally suited for portable battery
operated equipment. The power consumption is less
than 0.7 mW at V
DD
= 5 V reducing to 1 碌W in
power-down mode.
The DAC7571 is available in a 6-lead SOT 23
package.
V
DD
Power-On
Reset
DAC
Register
Ref (+) REF(-)
12-Bit
DAC
GND
APPLICATIONS
Process Control
Data Acquistion Systems
Closed-Loop Servo Control
PC Peripherals
Portable Instrumentation
Output
Buffer
V
OUT
I
2
C
Control
Logic
Power Down
Control Logic
Resistor
Network
A0
SCL
SDA
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.
2
C is a trademark of Philips Corporation.
I
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 漏 2003鈥?004, Texas Instruments Incorporated