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DAC8568D Datasheet(PDF) 1 Page - Texas Instruments

Part # DAC8568D
Description  12-/14-/16-Bit, Octal-Channel, Ultra-Low Glitch, Voltage Output DIGITAL-TO-ANALOG CONVERTERS with 2.5V, 2ppm/째C Internal Reference
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

DAC8568D Datasheet(HTML) 1 Page - Texas Instruments

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FEATURES
APPLICATIONS
DESCRIPTION
DAC7568
DAC8168
DAC8568
DataBufferA
DACRegisterA
BufferControl
RegisterControl
ControlLogic
32-BitShiftRegister
Power-Down
ControlLogic
AV
DD
V
REF
REF
IN/
V
OUT
12-/14-/16-Bit
DAC
CLR
LDAC
GND
D
IN
SCLK
SYNC
2.5V
Reference
12-/14-/16-Bit
DAC
DataBufferB
DACRegisterB
12-/14-/16-Bit
DAC
DataBufferC
DataBufferD
DataBufferE
DataBufferF
DataBufferG
DACRegisterC
DACRegisterD
DACRegisterE
DACRegisterF
DACRegisterG
12-/14-/16-Bit
DAC
12-/14-/16-Bit
DAC
12-/14-/16-Bit
DAC
12-/14-/16-Bit
DAC
12-/14-/16-Bit
DAC
V
H
OUT
DataBufferH
DACRegisterH
V
G
OUT
V
F
OUT
V
E
OUT
V
D
OUT
V
C
OUT
V
B
OUT
V
A
OUT
DAC7568
DAC8168
DAC8568
www.ti.com ..................................................................................................................................................... SBAS430A – JANUARY 2009 – REVISED APRIL 2009
12-/14-/16-Bit, Octal-Channel, Ultra-Low Glitch, Voltage Output
DIGITAL-TO-ANALOG CONVERTERS with 2.5V, 2ppm/°C Internal Reference
• Portable Instrumentation
234
• Relative Accuracy:
• Closed-Loop Servo-Control/Process Control
DAC7568 (12-Bit): 0.3 LSB INL
• Data Acquisition Systems
DAC8168 (14-Bit): 1 LSB INL
• Programmable Attenuation, Digital Gain, and
DAC8568 (16-Bit): 4 LSB INL
Offset Adjustment
• Glitch Energy: 0.1nV-s
• Programmable Voltage and Current Sources
• Internal Reference:
2.5V Reference Voltage (disabled by
default)
The
DAC7568,
DAC8168,
and
DAC8568
are
0.004% Initial Accuracy (typ)
low-power, voltage-output, eight-channel, 12-, 14-,
and
16-bit
digital-to-analog
converters
(DACs),
2ppm/°C Temperature Drift (typ)
respectively. These devices include a 2.5V, 2ppm/°C
5ppm/°C Temperature Drift (max)
internal reference (disabled by default), giving a
20mA Sink/Source Capability
full-scale output voltage range of 2.5V or 5V. The
• Power-On Reset to Zero Scale or Midscale
internal reference has an initial accuracy of 0.004%
and can source up to 20mA at the VREFIN/VREFOUT
• Ultra-Low Power Operation: 1.25mA at 5V
pin. These devices are monotonic, providing excellent
Including Internal Reference Current
linearity
and
minimizing
undesired
code-to-code
• Wide Power-Supply Range: +2.7V to +5.5V
transient voltages (glitch). They use a versatile 3-wire
• Monotonic Over Entire Temperature Range
serial interface that operates at clock rates up to
50MHz. The interface is compatible with standard
• Low-Power Serial Interface with
SPI™,
QSPI™,
Microwire™,
and
digital
signal
Schmitt-Triggered Inputs: Up to 50MHz
processor (DSP) interfaces.
• On-Chip Output Buffer Amplifier with
The DAC7568, DAC8168, and DAC8568 incorporate
Rail-to-Rail Operation
a power-on-reset circuit that ensures the DAC output
• Temperature Range: –40°C to +125°C
powers up at either zero scale or midscale until a
valid code is written to the device. These devices
contain a power-down feature, accessed over the
serial interface, that reduces current consumption to
typically 0.18
µA at 5V. Power consumption (including
internal reference) is typically 2.9mW at 3V, reducing
to less than 1
µW in power-down mode. The low
power consumption, internal reference, and small
footprint make these devices ideal for portable,
battery-operated equipment.
The DAC7568, DAC8168, and DAC8568 are drop-in
and function-compatible with each other, and are
available in TSSOP-16 and TSSOP-14 packages.
DEVICE COMPARISON
12-BIT
14-BIT
16-BIT
Pin- and
DAC7568
DAC8168
DAC8568
Function-Compatible
1
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
SPI, QSPI are trademarks of Motorola, Inc.
3
Microwire is a trademark of National Semiconductor.
4
All other trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2009, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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