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ADS7869

Features: ` Seven Simultaneously-Sampling Sample-and-Hold (S/H) Capacitors` Fully Differential Inputs` Flexible Digital Interface with Four Modes − One Mode 100% Software-Compatible to VECANA01 − SPI and Two Parallel Modes` Two Up-Down Counter Modules On-Chip` 12-Bit System Gain Adjust...

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SeekIC No. : 004277268 Detail

ADS7869: Features: ` Seven Simultaneously-Sampling Sample-and-Hold (S/H) Capacitors` Fully Differential Inputs` Flexible Digital Interface with Four Modes − One Mode 100% Software-Compatible to VECANA0...

ADS7869 Data Sheet

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Part Number:
ADS7869
Supply Ability:
5000

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

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Product Details

Description



Features:

` Seven Simultaneously-Sampling Sample-and-Hold (S/H) Capacitors
` Fully Differential Inputs
` Flexible Digital Interface with Four Modes
    − One Mode 100% Software-Compatible to VECANA01
    − SPI and Two Parallel Modes
` Two Up-Down Counter Modules On-Chip
` 12-Bit System Gain Adjustment for Every Channel
` 12-Bit Accurate System Offset Adjustment for Every Channel


Application

·Motor Control


Pinout

Connection Diagram


Specifications

  ADS7869I UNIT
Supply voltage, AVDD to AGND −0.3 to 6 V
Supply voltage, BVDD to BGND −0.3 to 6 V
Analog input voltage with respect to AGND AGND 0.3 to AVDD + 0.3 V
Reference input voltage with respect to AGND AGND 0.3 to AVDD + 0.3 V
Digital input voltage with respect to BGND BGND 0.3 to BVDD + 0.3 V
Ground voltage difference AGND to BGND ± 0.3 V
Input current to any pin except supply −10 to +10 mA
Operating virtual junction temperature range, TJ −40 to +150
Operating free-air temperature range, TA −40 to +85
Storage temperature range, TSTG −65 to +150
Lead temperature 1,6mm (1/16-inch) from case for 10 seconds +260



Description

The ADS7869 is a motor control front-end that includes three analog-to-digital converters (ADCs) with a total of seven sample-and-hold capacitors and 12 fully differential input channels. There are four sign comparators connected to four input channels. There are also three additional fully differential inputs; each input is connected to a window comparator and a sign comparator.

In addition, the ADS7869 also offers a very flexible digital interface with a parallel port that can be configured to different standards. Furthermore, a serial peripheral interface (SPI) and a specialized serial interface with three data lines (VECANA01 mode) are provided. This allows the ADS7869 to interface with most digital signal processors (DSPs) or microcontrollers. The chip is specialized for motor-control applications. For the position sensor analysis, two up-down counters are added on the silicon. This feature ensures that the analog input of the encoder is held at the same point of time as the counter value.




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