ADS8405 16-Bit 1.25 MSPS Unipolar Input Micro Power Sampling ADC |

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16-Bit 1.25 MSPS Unipolar Input Micro Power Sampling ADC



The ADS8405 is a 16-bit, 1.25-MHz A/D converter with an internal 4.096-V reference. The device includes a 16-bit capacitor-based SAR A/D converter with inherent sample and hold. The ADS8405 offers a full 16-bit interface and an 8-bit option where data is read using two 8-bit read cycles if necessary.

The ADS8405 has a unipolar pseudo-differential input. It is available in a 48-lead TQFP package and is characterized over the industrial –40°C to 85°C temperature range.


  • Unipolar Pseudo-Differential Input, 0 V to Vref
  • 16-Bit NMC at 1.25 MSPS
  • ±2 LSB INL Max, -1/+1.5 LSB DNL
  • 86 dB SNR, -90 dB THD at 100 kHz Input
  • Zero Latency
  • Internal 4.096-V Reference
  • High-Speed Parallel Interface
  • Single 5-V Analog Supply
  • Wide I/O Supply: 2.7 V to 5.25 V
  • Low Power: 155 mW at 1.25 MHz Typ
  • Pin Compatible With ADS8411/8401
  • 48-Pin TQFP Package
    • DWDM
    • Instrumentation
    • High-Speed, High-Resolution, Zero Latency Data Acquisition Systems
    • Transducer Interface
    • Medical Instruments
    • Communications


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Part number Order 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
ADS8405 Order now 16     1250     1     Parallel     -40 to 85     TQFP | 48     17.65 | 1ku     155     48TQFP: 81 mm2: 9 x 9 (TQFP | 48)     SAR     Pseudo-Differential
Oscillator     4.2     0     4.75     5.25     2.7     5.25     2     86     -90     Catalog