Fastest 18-Bit SAR ADC unveiled




The AD7960 is an 18-bit, 5 MSPS charge redistribution successive approximation (SAR), analog-to-digital converter (ADC). The SAR architecture allows unmatched performance both in noise and in linearity. The AD7960 contains a low power, high speed, 18-bit sampling ADC, an internal conversion clock and an internal reference buffer. On the CNV± edge, the AD7960 samples the voltage difference between the IN+ and IN− pins. The voltages on these pins swing in opposite phase between 0 V and 4.096 V/5 V. The reference voltage is applied to the part externally. All conversion results are available on a single LVDS self-clocked or echo-clocked serial interface.

The AD7960 is available in a 32-lead LFCSP (QFN) with operation specified from −40°C to +85°C.

APPLICATIONS

  • Digital imaging systems
    Digital X-rays
    Computed tomography
    IR cameras
  • MRI gradient control
  • High speed data acquisition
  • Spectroscopy
  • Test equipment

FEATURES and BENEFITS

  • Throughput: 5 MSPS
  • 18-bit resolution with no missing codes
  • SNR 99 dB
  • INL +/-0.8 LSB
  • DNL +/-0.5 LSB
  • True differential analog input voltage range: ±4.096 V or ±5 V
  • Low power dissipation (39 mW)
  • SAR architecture
  • External reference options
  • Serial LVDS interface
  • 32-lead, 5mm × 5mm LFCSP (QFN)
  • See datasheet for more details

Fastest 18-Bit SAR ADC unveiled

Analog Devices is claiming a first, with an 18bit successive approximation (SAR) ADC that can hit 5Msample/s – said to be twice as fast as anyone else’s.

“With its industry leading throughput, best-in-class noise floor and high linearity, the AD7960 was designed for low-power signal chains, multiplexed systems such as digital X-ray, and oversampling applications including spectroscopy, MRI gradient control and gas chromatography,” said the firm.

The figures are:

  • 22.4nV/√Hz noise floor relative to its full scale input
  • +/-0.8 LSB INL dc linearity
  • 99dB signal to noise ratio.
  • 39mW consumption at 5Msample/s.

– See more at: http://www.electronicsweekly.com/news/components/analogue-and-discretes/fastest-18-bit-sar-adc-unveiled-2013-09/#sthash.VhuCfEEJ.dpuf




Leave a Comment

*
= 3 + 3

Read previous post:
Easy Pulse mikro – A mikroBus compatible pulse sensor
Easy Pulse mikro – A mikroBus compatible pulse sensor

Easy Pulse mikro is a new addition to our Easy Pulse Sensor series. The word mikro signifies that it’s an add-on board...

Close
Scroll to top