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Analog Devices AD9648 and AD9642 A/D converters

Analog Devices Inc. (ADI) released new single and dual-channel 14-bit high-speed A/D converters for use in communications, instrumentation and test and measurement applications.

The AD9648 is a low-power, high-speed, 14-bit dual A/D converter that consumes 102 mW/channel at 125 MSPS (mega samples per second) and features SFDR (spurious-free dynamic range) performance of 91 dBc at 70 MHz. With IF sampling frequencies up to 200 MHz, the AD9648 is a good choice for designers looking for a dual high-speed A/D converter to build multimode digital receivers.

ADI also released the AD9642 14-bit A/D single-channel converter. With a 5 mm x 5 mm package size — 30 percent smaller than competing products — and IF sampling frequencies up to 350 MHz, the AD9642 saves board space and supports wide bandwidths up to 125MHz, according to the company. It features an SNR (signal-to-noise ratio) of 72.2 dBFS and SFDR of 90 dBc at base band while consuming 360 mW at 250 MSPS.

AD9648 key features :

  • SNR = 74.5 dBFS at fIN up to 70 MHz at 125 MSPS
  • ENOB of 11.8 at fIN up to 70 MHz at 125 MSPS (-1.0 dBFS)
  • SFDR = -91 dBc at fIN up to 70 MHz at 125 MSPS (-1.0 dBFS)
  • Integrated input buffer
  • Excellent linearity
    • DNL = ±0.5 LSB typical
    • INL = ±1.0 LSB typical

AD9642 key features :

  • SNR = 70.9 dBFS at 200 MHz AIN and 250 MSPS
  • SFDR = 86 dBc at 200 MHz AIN and 250 MSPS
  • -152.0 dBFS/Hz input noise @ 200 MHz, -1dBFS AIN and 250 MSPS
  • Total power consumption: 360 mW @ 250 MSPS

Pricing and availability:  

Product

Availability

Sample rates

1K unit pricing

Packaging

AD9648

Dual 14-bit

Sampling, production quantities

125

$42

64-lead LFCSP

9 mm x 9 mm

105

$35

250

$89

AD9642

Single 14-bit

Sampling, production quantities

210

$74.21

32-lead LFCSP

5 mm x 5 mm

170

$49

105

$27.57

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