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DAC8830ICDR

更新时间： 2024-11-27 04:38:27
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29页 937K
描述
16-Bit, Ultra-Low Power, Voltage-Output Digital-to-Analog Converters

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DAC8830  
DAC8831  
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®
SLAS449C–FEBRUARY 2005–REVISED NOVEMBER 2006  
16-Bit, Ultra-Low Power, Voltage-Output  
Digital-to-Analog Converters  
FEATURES  
DESCRIPTION  
•
•
•
•
•
•
•
•
•
•
16-Bit Resolution  
The DAC8830 and DAC8831 are single, 16-bit,  
serial-input, voltage-output digital-to-analog  
2.7 V to 5.5 V Single-Supply Operation  
Very Low Power: 15 µW for 3 V Power  
High Accuracy, INL: 1 LSB  
Low Glitch: 10 nV-s  
converters (DACs) operating from a single 3 V to 5 V  
power supply. These converters provide excellent  
linearity (1 LSB INL), low glitch, low noise, and fast  
settling (1.0 µS to 1/2 LSB of full-scale output) over  
the specified temperature range of –40°C to +85°C.  
The output is unbuffered, which reduces the power  
consumption and the error introduced by the buffer.  
Low Noise: 10 nV/√Hz  
Fast Settling: 1.0 µS  
Fast SPI™ Interface, up to 50 MHz  
Reset to Zero-Code  
These parts feature a standard high-speed (clock up  
to 50 MHz), 3 V or 5 V SPI serial interface to  
communicate with the DSP or microprocessors.  
Schmitt-Trigger Inputs for Direct Optocoupler  
Interface  
The DAC8830 output is 0 V to VREF. However, the  
DAC8831 provides bipolar output (±VREF) when  
working with an external buffer. The DAC8830 and  
DAC8831 are both reset to zero-code after power  
up. For optimum performance, a set of Kelvin  
connections to external reference and analog ground  
input are provided on the DAC8831.  
•
Industry-Standard Pin Configuration  
APPLICATIONS  
•
•
•
•
•
Portable Equipment  
Automatic Test Equipment  
Industrial Process Control  
Data Acquisition Systems  
Optical Networking  
The DAC8830 is available in an SO-8 package, and  
the DAC8831 in an SO-14 package. Both have  
industry standard pinouts (see Table 3, the  
cross-reference table in the Application Information  
section for details). The DAC8831 is also available in  
a QFN-14 package.  
DAC8830  
DAC8831  
Functional Block Diagram  
Functional Block Diagram  
VDD  
VDD  
−
VREF  
−
F
S
VREF  
RINV RFB  
RFB  
INV  
VOUT  
DAC  
VREF  
CS  
+V  
LDAC  
VO  
−
+
VOUT  
DAC  
AGND  
CS  
SCLK  
SDI  
−
V
OPA277  
OPA704  
OPA727  
SCLK  
SDI  
Input  
Register  
AGNDF  
AGNDS  
DAC Latch  
Input  
Register  
DAC Latch  
DAC8830  
DAC8831  
DGND  
DGND  
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.  
SPI, QSPI are trademarks of Motorola, Inc.  
Microwire is a trademark of National Semiconductor Corp.  
All other trademarks are the property of their respective owners.  
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 © 2005–2006, Texas Instruments Incorporated  
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