AD7834 查看數據表（PDF） - Analog Devices
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AD7834 Datasheet PDF : 28 Pages
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AD7834/AD7835
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
General Description ......................................................................... 1
Functional Block Diagrams............................................................. 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
AC Performance Characteristics ................................................ 5
Timing Specifications .................................................................. 6
Absolute Maximum Ratings............................................................ 7
Thermal Resistance ...................................................................... 7
ESD Caution.................................................................................. 7
Pin Configurations and Function Descriptions ........................... 8
Typical Performance Characteristics ........................................... 11
Terminology .................................................................................... 13
Theory of Operation ...................................................................... 14
DAC Architecture....................................................................... 14
Data Loading—AD7834 Serial Input Device ......................... 14
Data Loading—AD7835 Parallel Loading Device ................. 14
Unipolar Configuration............................................................. 15
Bipolar Configuration................................................................ 16
Controlled Power-On of the Output Stage.................................. 17
REVISION HISTORY
8/07—Rev. C to Rev. D
Changes to Table 5 ........................................................................... 7
Added Table 6.................................................................................... 7
Changes to Table 8............................................................................ 9
Updated Outline Dimensions ....................................................... 25
Changes to Ordering Guide .......................................................... 27
7/05—Rev. B to Rev. C
Updated Format..................................................................Universal
Changes to Figure 40...................................................................... 25
Changes to Ordering Guide .......................................................... 27
7/03—Rev. A to Rev. B
Revision 0: Initial Version
Power-On with CLR Low, LDAC High ................................... 17
Power-On with LDAC Low, CLR High ................................... 17
Loading the DAC and Using the CLR Input .......................... 17
DSG Voltage Range .................................................................... 18
Power-On of the AD7834/AD7835.............................................. 19
Microprocessor Interfacing........................................................... 20
AD7834 to 80C51 Interface ...................................................... 20
AD7834 to 68HC11 Interface ................................................... 20
AD7834 to ADSP-2101 Interface ............................................. 20
AD7834 to DSP56000/DSP56001 Interface............................ 21
AD7834 to TMS32020/TMS320C25 Interface....................... 21
Interfacing the AD7835—16-Bit Interface.............................. 21
Interfacing the AD7835—8-Bit Interface................................ 22
Applications Information .............................................................. 23
Serial Interface to Multiple AD7834s ...................................... 23
Opto-Isolated Interface ............................................................. 23
Automated Test Equipment ...................................................... 23
Power Supply Bypassing and Grounding................................ 24
Outline Dimensions ....................................................................... 25
Ordering Guide .......................................................................... 27
Rev. D | Page 2 of 28
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