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DAC7568 Datasheet(PDF) 1 Page - Texas Instruments

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No. de pieza DAC7568
Descripción Electrónicos  12-/14-/16-Bit, Octal-Channel, Ultralow Glitch, Voltage Output DIGITAL-TO-ANALOG CONVERTERS with 2.5V, 2ppm/째C Internal Reference
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Fabricante Electrónico  TI [Texas Instruments]
Página de inicio  http://www.ti.com
Logo TI - Texas Instruments

DAC7568 Datasheet(HTML) 1 Page - Texas Instruments

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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
SBAS430D – JANUARY 2009 – REVISED MAY 2012
12-/14-/16-Bit, Octal-Channel, Ultralow Glitch, Voltage Output
DIGITAL-TO-ANALOG CONVERTERS with 2.5V, 2ppm/°C Internal Reference
Check for Samples: DAC7568, DAC8168, DAC8568
1
FEATURES
APPLICATIONS
234
Relative Accuracy:
Portable Instrumentation
DAC7568 (12-Bit): 0.3 LSB INL
Closed-Loop Servo-Control/Process Control
DAC8168 (14-Bit): 1 LSB INL
Data Acquisition Systems
DAC8568 (16-Bit): 4 LSB INL
Programmable Attenuation, Digital Gain, and
Offset Adjustment
Glitch Energy: 0.1nV-s
Programmable Voltage and Current Sources
Internal Reference:
2.5V Reference Voltage (disabled by
DESCRIPTION
default)
The DAC7568, DAC8168, and DAC8568 are low-
0.004% Initial Accuracy (typ)
power, voltage-output, eight-channel, 12-, 14-, and
2ppm/°C Temperature Drift (typ)
16-bit
digital-to-analog
converters
(DACs),
respectively. These devices include a 2.5V, 2ppm/°C
5ppm/°C Temperature Drift (max)
internal reference (disabled by default), giving a full-
20mA Sink/Source Capability
scale output voltage range of 2.5V or 5V. The internal
Power-On Reset to Zero Scale or Midscale
reference has an initial accuracy of 0.004% and can
source up to 20mA at the VREFIN/VREFOUT pin.
Ultralow Power Operation: 1.25mA at 5V
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 Schmitt-
SPI™,
QSPI™,
Microwire™,
and
digital
signal
Triggered Inputs: Up to 50MHz
processor (DSP) interfaces.
On-Chip Output Buffer Amplifier with Rail-to-
The DAC7568, DAC8168, and DAC8568 incorporate
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 Function-
DAC7568
DAC8168
DAC8568
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 © 2009–2012, 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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