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ADS7881

Features: `4 MHz Sample Rate, 12-Bit Resolution`Zero Latency`Unipolar, Pseudo Differential Input, Range: − 0 V to 2.5 V`High Speed Parallel Interface`71 dB SNR and −88.5 dB THD at 1 MHz I/P`Power Dissipation 95 mW at 4 MSPS`Nap Mode (10 mW Power Dissipation)`Power Down (10 W)`Internal ...

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SeekIC No. : 004277271 Detail

ADS7881: Features: `4 MHz Sample Rate, 12-Bit Resolution`Zero Latency`Unipolar, Pseudo Differential Input, Range: − 0 V to 2.5 V`High Speed Parallel Interface`71 dB SNR and −88.5 dB THD at 1 MHz ...

ADS7881 Data Sheet

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Part Number:
ADS7881
Supply Ability:
5000

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  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

`4 MHz Sample Rate, 12-Bit Resolution
`Zero Latency
`Unipolar, Pseudo Differential Input, Range: − 0 V to 2.5 V
`High Speed Parallel Interface
`71 dB SNR and −88.5 dB THD at 1 MHz I/P
`Power Dissipation 95 mW at 4 MSPS
`Nap Mode (10 mW Power Dissipation)
`Power Down (10 W)
`Internal Reference
`Internal Reference Buffer
`48-Pin TQFP Package


Application

· Optical Networking (DWDM, MEMS Based Switching)
· Spectrum Analyzers
· High Speed Data Acquisition Systems
· High Speed Close-Loop Systems
· Telecommunication
· Ultra-Sound Detection


Specifications

 
UNIT
+IN to AGND
−0.3 V to +VA + 0.1 V
IN to AGND
−0.3 V to 0.5 V
+VA to AGND
0.3 V to 7 V
+VBD to BDGND
0.3 V to 7 V
Digital input voltage to BDGND
0.3 V to +VBD + 0.3 V
Digital output to BDGND
0.3 V to +VBD + 0.3 V
Operating temperature range
40°C to 85°C
Storage temperature range
65°C to 150°C
Junction temperature (TJ max)
150°C
TQFP package Power dissipation
(TJMax - TA)/JA
JA thermal impedance
86°C/W
Lead temperature, soldering Vapor phase (60 sec)
215°C
Infrared (15 sec)
220°C
(1) Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.


Description

The ADS7881 is a 12-bit 4-MSPS A-to-D converter with 2.5-V internal reference. The device includes a capacitor based SAR A/D converter with inherent sample and hold. The device offers a 12-bit parallel interface with an additional byte mode that provides easy interface with 8-bit processors. The device has a pseudo-differential input stage.

The −IN swing of ±200 mV is useful to compensate for ground voltage mismatch between the ADC and sensor and also to cancel common-mode noise. With nap mode enabled, the device operates at lower power when used at lower conversion rates. The ADS7881 is available in a 48-pin TQFP package.




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