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SLAS353 − DECEMBER 2001
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FEATURES
DESCRIPTION
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Micropower Operation: 250 µA at 5 V AV
Power-On Reset to Min-Scale
16-Bit Monotonic
DD
The DAC8541 is a low-power, single channel, 16-bit,
voltage output DAC. Its on-chip precision output
amplifier allows rail-to-rail voltage swing to be achieved
at the output. The DAC8541 utilizes a 16-bit parallel
interface and features additional powerdown function
pins as well as hardware-enabled, asynchronous DAC
updating and reset capability.
Settling Time: 10 µs to 0.003% FSR
16-Bit Parallel Interface
On-Chip Output Buffer Amplifier With
Rail-to-Rail Operation
The DAC8541 requires an external reference voltage to
set the output range of the DAC. The device
incorporates a power-on-reset circuit that ensures that
the DAC output powers up at min-scale and remains
there until a valid write takes place to the device. In
addition, the DAC8541 contains a power-down feature,
accessed via two hardware pins, that when enabled
reduces the current consumption of the device to
200 nA at 5 V.
Hardware Reset to Min-Scale or Mid-Scale
Double-Buffered Architecture
Asynchronous LDAC Control
Data Readback Support
1.8 V Compatible Digital Interface:
− DV
= 1.8 V−5.5 V
DD
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Wide Analog Supply Range:
− AV = 2.7 V−5.5 V
DD
The low power consumption of this device in normal
operation makes it ideally suited for use in portable
battery operated equipment applications. The power
32-Lead 5 mm × 5 mm TQFP Package
APPLICATIONS
consumption is 1.2 mW at AV = 5 V reducing to 1 µW
DD
in power-down mode.
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Process Control
The DAC8541 is available in a 32-lead TQFP package
with an operating temperature range of −40°C to 85°C.
Data Acquisition Systems
Closed-Loop Servo Control
PC Peripherals
Portable Instrumentation
AV
DD
DV
V H
REF
DD
DAC8541
V
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Sense
OUT
OUT
I/O
Input
Register
DAC
Register
DAC
Data I/O
CS
R/W
BTC/USB
Buffer
16
Power
Down
Control
Logic
Control
Logic
Resistor
Network
AGND DGND
RSTSEL RST LDAC
PD0 PD1
V L
REF
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.
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Copyright 2001, Texas Instruments Incorporated
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ꢠ ꢤ ꢡ ꢠꢙ ꢚꢮ ꢜꢛ ꢟ ꢧꢧ ꢥꢟ ꢝ ꢟ ꢞ ꢤ ꢠ ꢤ ꢝ ꢡ ꢩ
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