鈥?/div>
Micropower
Operation: 500 碌A at 3 V V
DD
Fast Update Rate: 188 kSPS
Power-On Reset to Zero
2.7-V to 5.5-V Analog Power Supply
10-Bit Monotonic
I
2
C鈩?Interface up to 3.4 Mbps
Data Transmit Capability
Rail-to-Rail Operation Output Buffer Amplifier
Double-Buffered Input Register
Address Support for up to Sixteen DAC6573s
Synchronous Update for up to 64 Channels
Voltage Translators for all Digital Inputs
Operation From 鈥?0擄C to 105擄C
Small 16 Lead TSSOP Package
DESCRIPTION
The DAC6573 is a low-power, quad channel, 10-Bit
buffered voltage output DAC. Its on-chip precision
output amplifier allows rail-to-rail output swing. The
DAC6573 utilizes an I
2
C compatible two wire serial
interface supporting high-speed interface mode with
address support of up to sixteen DAC6573s for a total
of 64 channels on the bus.
The DAC6573 requires an external reference voltage
to set the output range of the DAC. The DAC6573
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 DAC6573 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 碌W in
power-down mode.
The DAC6573 is available in a 16-lead TSSOP
package.
IOV
DD
V
REF
H
APPLICATIONS
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
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
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, Texas Instruments Incorporated