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ADS7881

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2.7V-5.25V Digital, 5V Analog, 12 Bit, 4MSPS, Parallel ADC with Ref

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Data sheet

ADS7881

ACTIVE
Data sheet Order now

Product details

Resolution (Bits) 12 Sample rate (max) (ksps) 4000 Number of input channels 1 Interface type Byte-Wide, Parallel Architecture SAR Input type Pseudo-Differential, Single-ended Rating Catalog Reference mode External, Internal Input voltage range (max) (V) 2.6 Input voltage range (min) (V) 0 Features Oscillator Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 95 Analog supply voltage (min) (V) 4.75 Analog supply voltage (max) (V) 5.25 SNR (dB) 71.5 Digital supply (min) (V) 2.7 Digital supply (max) (V) 5.25
Resolution (Bits) 12 Sample rate (max) (ksps) 4000 Number of input channels 1 Interface type Byte-Wide, Parallel Architecture SAR Input type Pseudo-Differential, Single-ended Rating Catalog Reference mode External, Internal Input voltage range (max) (V) 2.6 Input voltage range (min) (V) 0 Features Oscillator Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 95 Analog supply voltage (min) (V) 4.75 Analog supply voltage (max) (V) 5.25 SNR (dB) 71.5 Digital supply (min) (V) 2.7 Digital supply (max) (V) 5.25
TQFP (PFB) 48 81 mm² 9 x 9 VQFN (RGZ) 48 49 mm² 7 x 7
  • 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
  • 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

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.

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.
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* Data sheet 12 Bit 4 MSPS Low Power SAR Analog to Digital Converter datasheet (Rev. B) 11 Nov 2005

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