DAC8534 Datasheet, PDF (1/20 Pages) Texas Instruments – Quad Channel, Low Power, 16-Bit, Serial Input DIGITAL-TO-ANALOG CONVERTER

DAC8534
DAC8534 ®
SBAS254D – SEPTEMBER 2002 – REVISED MARCH 2004
Quad Channel, Low Power, 16-Bit, Serial Input
DIGITAL-TO-ANALOG CONVERTER
FEATURES
DESCRIPTION
q POWER SUPPLY: +2.7V to +5.5V
q microPOWER OPERATION: 950µA at 5V
q 16-BIT MONOTONIC OVER TEMPERATURE
q SETTLING TIME: 10µs to ±0.003% FSR
q ULTRA-LOW AC CROSSTALK: –100dB typ
q POWER-ON RESET TO ZERO-SCALE
q ON-CHIP OUTPUT BUFFER AMPLIFIER WITH
RAIL-TO-RAIL OPERATION
q DOUBLE BUFFERED INPUT ARCHITECTURE
q SIMULTANEOUS OR SEQUENTIAL OUTPUT
UPDATE AND POWER-DOWN
q 16 CHANNEL BROADCAST CAPABILITY
q SCHMITT-TRIGGERED INPUTS
q TSSOP-16 PACKAGE
APPLICATIONS
q PORTABLE INSTRUMENTATION
q CLOSED-LOOP SERVO-CONTROL
q PROCESS CONTROL
q DATA ACQUISITION SYSTEMS
AV_DD
q PROGRAMMABLE ATTENUATION
q PC PERIPHERALS
The DAC8534 is a quad channel, 16-bit Digital-to-Analog
Converter (DAC) offering low-power operation and a flexible
serial host interface. Each on-chip precision output amplifier
allows rail-to-rail output swing to be achieved over the supply
range of 2.7V to 5.5V. The device supports a standard 3-wire
serial interface capable of operating with input data clock
frequencies up to 30MHz for IOV_DD = 5V.
The DAC8534 requires an external reference voltage to set
the output range of each DAC channel. Also incorporated
into the device is a power-on reset circuit which ensures that
the DAC outputs power up at zero-scale and remain there
until a valid write takes place. The DAC8534 provides a per
channel power-down feature, accessed over the serial inter-
face, that reduces the current consumption to 200nA per
channel at 5V.
The low-power consumption of this device in normal opera-
tion makes it ideally suited to portable battery-operated
equipment and other low-power applications. The power
consumption is 5mW at 5V, reducing to 4µW in power-down
mode.
The DAC8534 is available in a TSSOP-16 package with a
specified operating temperature range of –40°C to +105°C.
IOV_DD
V_REFH
Data
Buffer A
DAC
Register A
DAC A
V_OUTA
V_OUTB
Data
Buffer D
DAC
Register D
DAC D
18
V_OUTC
V_OUTD
SYNC
SCLK
D_IN
24-Bit
Serial-to-
Buffer
Parallel
Control
Shift
Register
8
Register
Control
Power-Down
Control Logic
Resistor
Network
GND
A0 A1 LDAC ENABLE V_REFL
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.
PowerPAD is a trademark of Texas Instruments. All other trademarks are the property of their respective owners.
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.
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Copyright © 2002-2004, Texas Instruments Incorporated