DAC7760_15 Datasheet, PDF (1/59 Pages) Texas Instruments – Single-Channel, 12- and 16-Bit Programmable Current Output and Voltage Output Digital-to-Analog Converters for 4-mA to 20-mA Current Loop Applications

DAC7760
DAC8760
www.ti.com
SBAS528A – JUNE 2013 – REVISED DECEMBER 2013
Single-Channel, 12- and 16-Bit Programmable Current Output and Voltage Output
Digital-to-Analog Converters for 4-mA to 20-mA Current Loop Applications
Check for Samples: DAC7760, DAC8760
FEATURES
1
•234 Current Output: 4 mA to 20 mA;
0 mA to 20 mA; 0 mA to 24 mA
• Voltage Output:
– 0 V to 5 V; 0 V to 10 V; ±5 V; ±10 V
– 0 V to 5.5 V; 0 V to 11 V; ±5.5 V; ±11 V
(10% Overrange)
• ±0.1% FSR Total Unadjusted Error (TUE) Max
• DNL: ±1 LSB Max
• Simultaneous Voltage and Current Output
• Internal 5-V Reference (10 ppm/°C, max)
• Internal 4.6-V Power-Supply Output
• Reliability Features:
– CRC Check and Watchdog Timer
– Thermal Alarm
– Open Alarm, Short Current Limit
• Wide Temperature Range: –40°C to +125°C
• 6-mm × 6-mm QFN-40; TSSOP-24 Packages
APPLICATIONS
• 4-mA to 20-mA Current Loops
• Analog Output Modules
• Building Automation
• Environment Monitoring
• Programmable Logic Controllers (PLCs)
• Field Sensors and Process Transmitters
DESCRIPTION
The DAC7760 and DAC8760 are low-cost, precision,
fully-integrated, 12-bit and 16-bit digital-to-analog
converters (DACs) designed to meet the
requirements of industrial process-control
applications. These devices can be programmed as a
current output with a range of 4 mA to 20 mA, 0 mA
to 20 mA, or 0 mA to 24 mA; or as a voltage output
with a range of 0 V to 5 V, 0 V to 10 V, ±5 V, or ±10
V, with a 10% overrange (0 V to 5.5 V, 0 V to 11 V,
±5.5 V, or ±11 V). Both current and voltage outputs
can be simultaneously enabled while being controlled
by a single data register.
These devices include a power-on-reset function to
ensure powering up in a known state (both IOUT and
VOUT are disabled and in a Hi-Z state). The CLR
and CLR-SEL pins set the voltage outputs to zero-
scale or midscale, and the current output to the low
end of the range, if the output is enabled. Zero and
gain registers can be programmed to digitally
calibrate the device in the end system. The output
slew rate is also programmable by register. These
devices can superimpose an external HART^® signal
on the current output and can operate with either a
single +10-V to +36-V supply, or dual supplies of up
to ±18 V. All versions are available in both 6-mm × 6-
mm QFN-40 and TSSOP-24 packages.
RESOLUTION
(BITS)
12
16
RELATED DEVICES
CURRENT AND
VOLTAGE OUTPUT
DAC7760
DAC8760
CURRENT
OUTPUT
DAC7750
DAC8750
DVDD DVDD-EN
DACx760
LATCH
SCLK
DIN
SDO
CLR
CLR-SEL
Internal
Reference
DAC Input
Register
Thermal
Alarm
User Calibration
Gain/Offset
Register
REFOUT REFIN
HART-IN
AVSS AVDD
Current Output Stage
DAC
Pre-
Conditioning
I_GAIN
Current
Source
I_ENABLE
Voltage Output Stage
Slew Rate
Control
Watchdog
Timer
V_GAIN
V_ENABLE
BOOST
IOUT
ALARM
ISET-R
+VSENSE
VOUT
–VSENSE
CMP
GND
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.
HART is a registered trademark of HART Communication Foundation.
2
SPI, QSPI are trademarks of Motorola, Inc.
3
All other trademarks are the property of their respective owners.
4
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 © 2013, Texas Instruments Incorporated