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MFG:AD D/C:95
Part Number: AD7885
MFG: AD
D/C: 95
Description: The AD7884/AD7885 is a 16-bit monolithic analog-to-digital converter with internal sample-and-hold and...
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AD7885
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DataSheet
General Description
AD7885 General Description
The AD7884/AD7885 is a 16-bit monolithic analog-to-digital converter with internal sample-and-hold and a conversion time of 5.3 ms. The maximum throughput rate is 166 kSPS. It uses a two pass flash architecture to achieve this speed. Two input ranges are available: ±5 V and ±3 V. Conversion is initiated by the CONVST signal. The result can be read into a microprocessor using the CS and RD inputs on the device. The AD7884 has a 16-bit parallel reading structure while the AD7885 has a byte reading structure. The conversion result is in 2s complement code.
The AD7884/AD7885 has its own internal oscillator which controls conversion. It runs from ±5 V supplies and needs a VREF+ of +3 V.
The AD7884 is available in a 40-pin plastic DIP package and in a 44-pin PLCC package.
The AD7885 is available in a 28-pin plastic DIP package and the AD7885A is available in a 44-pin PLCC package.
AD7885 Maximum Ratings
VDD to AGND . . . . . . . . . . . . . . . . . . . . . ........ . . . 0.3 V to +7 V
AVDD to AGND . . . . . . . . . . . . . . . . . . . . . ........ . . 0.3 V to +7 V
VSS to AGND . . . . . . . . . . . . . . . . . . . . . . ........ . . +0.3 V to 7 V
AVSS to AGND . . . . . . . . . . . . . . . . . . .. . ...... . . . 0.3 V to 7 V
AGND Pins to DGND . . . . . . . . . . . ............ 0.3 V to VDD + 0.3 V
AVDD to VDD2 . . . . . . . . . . . . . . . . ... ..... . . . . . . . 0.3 V to +7 V
AVSS to VSS2 . . . . . . . . . . . . . . . . . .... ... . . . . . . . +0.3 V to 7 V
GND to DGND . . . . . . . . . . . . . ............ . . . 0.3 V to VDD + 0.3 V
VINS, VINF to AGND . . . . . . . .......... . . VSS 0.3 V to VDD + 0.3 V
VREF+ to AGND . . . . . . . . . . ... .... .. . . VSS 0.3 V to VDD + 0.3 V
VREF to AGND . . . . . . . . . . .. .... . .. . VSS 0.3 V to VDD + 0.3 V
VINV to AGND . . . . . . . . . . . ....... . .. . VSS 0.3 V to VDD + 0.3 V
Digital Inputs to DGND . . . . . . ......... . . . . 0.3 V to VDD + 0.3 V
Digital Outputs to DGND . . . . . .. . . ....... . 0.3 V to VDD + 0.3 V
Operating Temperature Range
Commercial Plastic (A, B Versions) . .......... . . . 40 to +85
Industrial Cerdip (A, B Versions) . . . . ....... . . . 40 to +85
Extended Cerdip (T Versions) . . . . . . ......... . 55 to +125
Storage Temperature Range . . . . . . . . . . ....... 65 to +150
Lead Temperature (Soldering, 10 secs) . . .. . .... .. . . . . . +300
Power Dissipation (Any Package) to +75 . . .... .. . . . 1000 mW
Derates above +75 by . . . . . . . . . . . . . . . . ....... . . . 10 mW/
AVDD to AGND . . . . . . . . . . . . . . . . . . . . . ........ . . 0.3 V to +7 V
VSS to AGND . . . . . . . . . . . . . . . . . . . . . . ........ . . +0.3 V to 7 V
AVSS to AGND . . . . . . . . . . . . . . . . . . .. . ...... . . . 0.3 V to 7 V
AGND Pins to DGND . . . . . . . . . . . ............ 0.3 V to VDD + 0.3 V
AVDD to VDD2 . . . . . . . . . . . . . . . . ... ..... . . . . . . . 0.3 V to +7 V
AVSS to VSS2 . . . . . . . . . . . . . . . . . .... ... . . . . . . . +0.3 V to 7 V
GND to DGND . . . . . . . . . . . . . ............ . . . 0.3 V to VDD + 0.3 V
VINS, VINF to AGND . . . . . . . .......... . . VSS 0.3 V to VDD + 0.3 V
VREF+ to AGND . . . . . . . . . . ... .... .. . . VSS 0.3 V to VDD + 0.3 V
VREF to AGND . . . . . . . . . . .. .... . .. . VSS 0.3 V to VDD + 0.3 V
VINV to AGND . . . . . . . . . . . ....... . .. . VSS 0.3 V to VDD + 0.3 V
Digital Inputs to DGND . . . . . . ......... . . . . 0.3 V to VDD + 0.3 V
Digital Outputs to DGND . . . . . .. . . ....... . 0.3 V to VDD + 0.3 V
Operating Temperature Range
Commercial Plastic (A, B Versions) . .......... . . . 40 to +85
Industrial Cerdip (A, B Versions) . . . . ....... . . . 40 to +85
Extended Cerdip (T Versions) . . . . . . ......... . 55 to +125
Storage Temperature Range . . . . . . . . . . ....... 65 to +150
Lead Temperature (Soldering, 10 secs) . . .. . .... .. . . . . . +300
Power Dissipation (Any Package) to +75 . . .... .. . . . 1000 mW
Derates above +75 by . . . . . . . . . . . . . . . . ....... . . . 10 mW/
AD7885 Features
Monolithic Construction
Fast Conversion: 5.3 ms
High Throughput: 166 kSPS
Low Power: 250 mW
Fast Conversion: 5.3 ms
High Throughput: 166 kSPS
Low Power: 250 mW
AD7885 Typical Application
Automatic Test Equipment
Medical Instrumentation
Industrial Control
Data Acquisition Systems
Robotics
Medical Instrumentation
Industrial Control
Data Acquisition Systems
Robotics
AD7885 Connection Diagram
AD7885
PDF/DataSheet Download
- Datasheet: AD7885
- File Size: 326870 KB
- Manufacturer: AD [Analog Devices]
- Click here to Download
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AD7885 Relative Products
AD7884BQ
IC ADC 16BIT SAMPLING HS 40-CDIP
AD7884BPZ-REEL
IC ADC 16BIT SAMPLING HS 44-PLCC
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AD7884BPZ
IC ADC 16BIT SAMPLING HS 44-PLCC
AD7884BP-REEL
IC ADC 16BIT SAMPLING HS 44-PLCC
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AD7884BP
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AD7884AQ
IC ADC 16BIT SAMPLING HS 40-CDIP
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