ADS7881 2.7 V~5.25 V デジタル、5 V アナログ、12ビット 4 MSPS パラレル ADC、リファレンス付き | TIJ.co.jp

ADS7881
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2.7 V~5.25 V デジタル、5 V アナログ、12ビット 4 MSPS パラレル ADC、リファレンス付き

2.7 V~5.25 V デジタル、5 V アナログ、12ビット 4 MSPS パラレル ADC、リファレンス付き - ADS7881
データシート
 

概要

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 device is available in a 48-pin TQFP package.

特長

  • 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 µW)
  • Internal Reference
  • Internal Reference Buffer
  • 48-Pin TQFP Package
  • APPLICATIONS
    • Optical Networking (DWDM, MEMS Based Switching)
    • Spectrum Analyzers
    • High Speed Data Acquisition Systems
    • High Speed Close-Loop Systems
    • Telecommunication
    • Ultra-Sound Detection

機能一覧

他の製品と比較 高精度 ADCs (<=10MSPS) メール Excelへダウンロード
Part number オーダー・オプション Resolution (Bits) Sample rate (Max) (kSPS) Number of input channels Interface Operating temperature range (C) Package Group Approx. price (US$) Power consumption (Typ) (mW) Package size: mm2:W x L (PKG) Architecture Input type Multi-channel configuration Reference mode Features Input range (Max) (V) Input range (Min) (V) Analog voltage AVDD (Min) (V) Analog voltage AVDD (Max) (V) Digital supply (Min) (V) Digital supply (Max) (V) INL (Max) (+/-LSB) SNR (dB) THD (Typ) (dB) Rating
ADS7881 ご注文 12     4000     1     Parallel     -40 to 85     TQFP | 48
VQFN | 48    
7.35 | 1ku     95     48TQFP: 81 mm2: 9 x 9 (TQFP | 48)
48VQFN: 49 mm2: 7 x 7 (VQFN | 48)    
SAR     Pseudo-Differential
Single-Ended    
    Ext
Int    
Oscillator     2.6     0     4.75     5.25     2.7     5.25     1     71.5     -91     Catalog