DAC8544_12 Datasheet, PDF (1/23 Pages) Texas Instruments – QUAD, 16-BIT, RAIL-TO-RAIL VOLTAGE OUTPUT, PARALLEL INTERFACE,DIGITAL-TO-ANALOG CONVERTER

www.ti.com
Actual Size
7 mm x 7 mm
DAC8544
SLAS420A – MAY 2004 – REVISED JUNE 2005
QUAD, 16-BIT, RAIL-TO-RAIL VOLTAGE OUTPUT, PARALLEL INTERFACE,
DIGITAL-TO-ANALOG CONVERTER
FEATURES
• Single Supply: +2.7 V to +5.5 V
• Micropower Operation: 950 µA @ 5 V
• Rail-To-Rail Voltage Output
• Ultralow Crosstalk: –110 dB
• Settling Time: 10 µs To ±0.003% FSR
• 16-Bit Monotonic
• Offset Error: ±0.3 mV
• Gain Error: ±1 mV
• Total Error: ±3 mV
• Per-Channel V_REF+, V_REF–, V_FB Pins
• Logic Compatible: +1.8 V to +5.5 V
• Readback Capability
• Double Buffered Inputs
• Simultaneous or Sequential Update
• Schmitt-Triggered Digital Inputs
• Hardware Reset
• 48-Lead TQFP Package
APPLICATIONS
• Process Control
• Data Acquisition Systems
• Closed-Loop Servo Control
• PC Peripherals
• Optical Networking
DESCRIPTION
The DAC8544 is a low-power, quad-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 DAC8544 is 16-bit
monotonic and offers exceptional absolute accuracy
with ultralow crosstalk. The DAC8544 uses a 16-bit
parallel interface and features additional power-down
function pins as well as hardware-enabled, synchron-
ous DAC updating and reset capability.
The DAC8544 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 outputs power up at zero volt and
remains there until a valid write takes place. In
addition, the DAC8544 contains a power-down fea-
ture, accessed via PD pin, that reduces the current
consumption of the device to 400 nA at 5 V. The
power consumption is typically under 5 mW at
V_DD = 5 V.
The DAC8544 is available in a 48-lead TQFP pack-
age with an operating temperature range of –40°C to
+105°C.
IOV_DD IOGND V_DD GND
Power-On
Reset
D15
Input
Register
D0
CS
LDAC
RST
R/W
Interface
Logic
Input
Register
V_REFA+ V_REFA−
V_REFB+ V_REFB−
DAC
Register
16 Bit
DAC
DAC8544
Buffer
DAC
Register
16 Bit
DAC
Buffer
Power-Down
Logic
A1 A0
V_REFD− V_REFD+ V_REFC+ V_REFC−
PD
V_FBA
V_OUTA
V_FBB
V_OUTB
V_FBC
V_OUTC
V_FBD
V_OUTD
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 the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2004–2005, Texas Instruments Incorporated