D/A Converter. DAC7558 Datasheet

DAC7558 Converter. Datasheet pdf. Equivalent

Part DAC7558
Description Octal 12-Bit D/A Converter
Feature DAC7558 www.ti.com SLAS435A – MAY 2005 – REVISED DECEMBER 2005 12-BIT, OCTAL, ULTRALOW GLITCH, VO.
Manufacture etcTI
Datasheet
Download DAC7558 Datasheet




DAC7558
DAC7558
www.ti.com
SLAS435A – MAY 2005 – REVISED DECEMBER 2005
12-BIT, OCTAL, ULTRALOW GLITCH, VOLTAGE OUTPUT
DIGITAL-TO-ANALOG CONVERTER
FEATURES
2.7-V to 5.5-V Single Supply
12-Bit Linearity and Monotonicity
Rail-to-Rail Voltage Output
Settling Time: 5 µs (Max)
Ultralow Glitch Energy: 0.1 nVs
Ultralow Crosstalk: –100 dB
Low Power: 1.8 mA (Max)
Per-Channel Power Down: 2 µA (Max)
Power-On Reset to Zero Scale and Mid Scale
SPI-Compatible Serial Interface: Up to 50 MHz
Simultaneous or Sequential Update
Asynchronous Clear
Binary and Twos-Complement Capability
Daisy-Chain Operation
1.8-V to 5.5-V Logic Compatibility
Specified Temperature Range: –40°C to 105°C
Small, 5-mm x 5-mm, 32-Lead QFN Package
APPLICATIONS
Portable Battery-Powered Instruments
Digital Gain and Offset Adjustment
Programmable Voltage and Current Sources
Programmable Attenuators
Industrial Process Control
DESCRIPTION
The DAC7558 is a 12-bit, octal-channel, voltage
output DAC with exceptional linearity and
monotonicity. Its proprietary architecture minimizes
undesired transients such as code to code glitch and
channel to channel crosstalk. The low-power
DAC7558 operates from a single 2.7-V to 5.5-V
supply. The DAC7558 output amplifiers can drive a
2-k, 200-pF load rail-to-rail with 5-µs settling time;
the output range is set using an external voltage
reference.
The 3-wire serial interface operates at clock rates up
to 50 MHz and is compatible with SPI, QSPI,
Microwire™, and DSP interface standards. The
outputs of all DACs may be updated simultaneously
or sequentially. The parts incorporate a
power-on-reset circuit to ensure that the DAC outputs
power up to zero volts and remain there until a valid
write cycle to the device takes place. The parts
contain a power-down feature that reduces the
current consumption of the device to under 2 µA.
The small size and low-power operation makes the
DAC7558 ideally suited for battery-operated portable
applications. The power consumption is typically 7.5
mW at 5 V, 3.7 mW at 3 V, and reduces to 1 µW in
power-down mode.
The DAC7558 is available in a 32-lead QFN package
and is specified over –40°C to 105°C.
FUNCTIONAL BLOCK DIAGRAM
VDD
IOVDD
VREF1
VREF2
Input
Register
DAC
Register
String
DAC A
+
SCLK
SYNC
SDIN
SDO
Interface
Logic
Input
Register
Power-On
Reset
DAC
Register
String
DAC H
+
Power-Down
Logic
DCEN RST RSTSEL AGND DGND VREF3 VREF4
PD
VFBA
VOUTA
VFBH
VOUTH
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.
Microwire is a trademark of National Semiconductor Corp..
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 © 2005, Texas Instruments Incorporated



DAC7558
DAC7558
SLAS435A – MAY 2005 – REVISED DECEMBER 2005
www.ti.com
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated
circuits be handled with appropriate precautions. Failure to observe proper handling and installation
procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision
integrated circuits may be more susceptible to damage because very small parametric changes could
cause the device not to meet its published specifications.
ORDERING INFORMATION(1)
PRODUCT PACKAGE
PACKAGE
DESIGNATOR
DAC7558 32 QFN
RHB
SPECIFIED
TEMPERATURE
RANGE
–40°C TO 105°C
PACKAGE
MARKING
D758
ORDERING
NUMBER
DAC7558IRHBT
DAC7558IRHBR
TRANSPORT
MEDIA
250-piece Tape and
Reel
3000-piece Tape
and Reel
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
Web site at www.ti.com.
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range (unless otherwise noted)(1)
VDD , IOVDD to GND
Digital input voltage to GND
Vout to GND
Operating temperature range
Storage temperature range
Junction temperature (TJ Max)
UNIT
–0.3 V to 6 V
–0.3 V to VDD + 0.3 V
–0.3 V to VDD+ 0.3 V
–40°C to 105°C
–65°C to 150°C
150°C
(1) Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. Exposure to absolute
maximum conditions for extended periods may affect device reliability.
2







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