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ADS7869

AKTIV

Analoges Frontend für 12-Kanal-7-simultane Abtastung mit 3 1 MSPS 12-Bit-ADCs zur Motorsteuerung

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ADS7869

AKTIV
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Produktdetails

Resolution (Bits) 12 Sample rate (max) (ksps) 1000 Number of input channels 12 Interface type Parallel, SPI Architecture SAR Input type Differential Multichannel configuration Simultaneous Sampling Rating Catalog Reference mode External, Internal Input voltage range (max) (V) 2.5 Input voltage range (min) (V) 0 Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 250 Analog supply voltage (min) (V) 4.5 Analog supply voltage (max) (V) 5.5 SNR (dB) 71 Digital supply (min) (V) 2.7 Digital supply (max) (V) 5.5
Resolution (Bits) 12 Sample rate (max) (ksps) 1000 Number of input channels 12 Interface type Parallel, SPI Architecture SAR Input type Differential Multichannel configuration Simultaneous Sampling Rating Catalog Reference mode External, Internal Input voltage range (max) (V) 2.5 Input voltage range (min) (V) 0 Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 250 Analog supply voltage (min) (V) 4.5 Analog supply voltage (max) (V) 5.5 SNR (dB) 71 Digital supply (min) (V) 2.7 Digital supply (max) (V) 5.5
TQFP (PZT) 100 256 mm² 16 x 16
  • 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
  • APPLICATIONS
    • Motor Control
  • 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
  • APPLICATIONS
    • Motor Control

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.

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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Technische Dokumentation

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Top-Dokumentation Typ Titel Format-Optionen Datum
* Data sheet Analog Motor Control Front-End with Simultaneous Sampling on Seven datasheet (Rev. E) 25 Jul 2006
E-book Best of Baker's Best: Precision Data Converters -- SAR ADCs 21 Mai 2015
Application note Determining Minimum Acquisition Times for SAR ADCs, part 2 17 Mär 2011
Application note Determining Minimum Acquisition Times for SAR ADCs, part 1 (Rev. A) 10 Nov 2010
Application note Using the ADS7869 Reference Design Evaluation Module 26 Okt 2005

Design und Entwicklung

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Support-Software

ADS7869 Gerber files

SLAC113.ZIP (151 KB)
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ADS7869 IBIS Model

SBAM119.ZIP (78 KB) - IBIS Model
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