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DAC8501E2K5 Datasheet

  • DAC8501E2K5

  • Low-Power, Rail-to-Rail Output, 16-Bit Serial Input DIGITAL-...

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DAC8501
SBAS212A 鈥?APRIL 2001 鈥?REVISED FEBRUARY 2003
Low-Power, Rail-to-Rail Output, 16-Bit Serial Input
DIGITAL-TO-ANALOG CONVERTER
FEATURES
q
microPOWER
OPERATION: 250
碌
A at 5V
q
MULTIPLYING-MODE BANDWIDTH: 350kHz
q
POWER-ON RESET TO ZERO
q
POWER SUPPLY: +2.7V to +5.5V
q
ENSURED MONOTONIC BY DESIGN
q
SETTLING TIME: 10
碌
s to
鹵
0.003% FSR
q
LOW-POWER SERIAL INTERFACE WITH
SCHMITT-TRIGGERED INPUTS
q
ON-CHIP OUTPUT BUFFER AMPLIFIER,
RAIL-TO-RAIL OPERATION
q
SYNC INTERRUPT FACILITY
q
MSOP-8 PACKAGE
DESCRIPTION
The DAC8501 is a low-power, single, 16-bit buffered voltage
output Digital-to-Analog Converter (DAC) optimized for multi-
plying operation. Its on-chip precision output amplifier allows
rail-to-rail output swing to be achieved. The DAC8501 uses a
versatile 3-wire serial interface that operates at clock rates up
to 30MHz and is compatible with standard SPI
鈩?/div>
, QSPI
鈩?/div>
,
Microwire
鈩?/div>
, and Digital Signal Processor (DSP) interfaces.
The DAC8501 requires an external reference voltage to set
the output range of the DAC. The DAC8501 incorporates a
power-on reset circuit that ensures that the DAC output
powers up at 0V and remains there until a valid write takes
place to the device. The DAC8501 contains a power-down
feature, accessed over the serial interface, that reduces the
current consumption of the device to 200nA at 5V.
The low-power consumption of this part in normal operation
makes it ideally suited to portable battery-operated equip-
ment. The power consumption is 1.2mW at 5V reducing to
1碌W in power-down mode.
The DAC8501 is available in an MSOP-8 package.
SPI and QSPI are registered trademarks of Motorola.
Microwire is a registered trademark of National Semiconductor.
APPLICATIONS
q
q
q
q
q
q
PROCESS CONTROL
DATA ACQUISITION SYSTEMS
CLOSED-LOOP SERVO-CONTROL
PC PERIPHERALS
PORTABLE INSTRUMENTATION
PROGRAMMABLE ATTENUATION
V
DD
V
FB
V
REF
Ref (+)
16-Bit DAC
V
OUT
16
DAC Register
16
SYNC
SCLK
D
IN
Power-Down
Control Logic
Resistor
Network
Shift Register
GND
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 include
testing of all parameters.
Copyright 漏 2001-2003, Texas Instruments Incorporated

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