Analog Devices Announces 14-Bit ADCs That Meet the Demanding Performance Requirements of Communications, Test & Measurement Applications

- AD9648 low-power, high-speed 14-bit dual A/D converter, consuming 102 mW per channel at 125 MSPS
- AD9642 14-bit A/D single-channel converter, supporting IF sampling frequency up to 350MHz

September 14, 2011 – Analog Devices, Inc. ( www.analog.com ), a global leader in high-performance semiconductors and data converters, today introduced new single- and dual-channel 14-bit high-speed A/D converters. Featuring high speed and high accuracy, these compact, cost-effective, and functionally flexible devices are ideal for communications, instrumentation, and test and measurement applications. Their exceptional performance and small size make them ideal for use in cellular infrastructure equipment supporting the latest 3G and 4G standards, such as CDMA2000, W-CDMA, LTE, TD-SCDMA, and multi-carrier GSM. They are also well-suited for designs such as battery-powered handheld instruments and scopes, and portable medical devices.

The AD9648 is a low-power, high-speed 14-bit dual A/D converter that consumes 102 mW per channel at 125 mega samples per second (MSPS) and boasts 91 dBc spurious-free dynamic range (SFDR) at a 70 MHz input frequency. With an IF sampling frequency of up to 200 MHz, it is ideal for designers requiring a high-speed dual A/D converter for use in multimode digital receivers. The AD9648 is pin-compatible with several other 16-, 14-, 12-, and 10-bit A/D converters from ADI, allowing easy migration from 10-bit converters with sampling rates from 20 MSPS to 125 MSPS to 16-bit converters.

Analog Devices also introduced the AD9642 14-bit A/D single-channel converter. Featuring a 5mm x 5mm package size, which is 30% smaller than competing products, and supporting an IF sampling frequency of up to 350MHz, the AD9642 saves board space and supports a wide bandwidth of up to 125MHz. It delivers a signal-to-noise ratio (SNR) of 72.2dBFS and an SFDR of 90dBc during signal conversion, while consuming only 360mW at 250MSPS.

The AD9648 and AD9642 A/D converters are based on a multi-stage differential pipeline architecture with built-in output error correction logic. The AD9648 is available in a 64-lead, RoHS-compliant LFCSP package, and the AD9642 is available in a 32-lead, RoHS-compliant LFCSP package. Both are specified for operation over the industrial temperature range of -40°C to +85°C. The AD9648 has two external 14-bit outputs that can be configured as 1.8V CMOS or LVDS. The AD9642 integrates a differential input stage constructed using ADI's proprietary technology to maintain excellent SFDR performance up to input frequencies of 350 Hz.

Key specifications of the AD9648 14-bit high-speed A/D converter:
• SNR = 74.5 dBFS (fIN up to 70 MHz, 125 MSPS)
• ENOB = 11.8 (fIN up to 70 MHz, 125 MSPS (−1.0 dBFS))
• SFDR = −91 dBc (fIN up to 70 MHz, 125 MSPS (−1.0 dBFS))
• Input buffer integration
• Excellent linearity
o DNL = ±0.5LSB(typ)
o INL = ±1.0LSB(typ)
• The AD9628 and AD9608 high-speed A/D converters are 12-bit and 10-bit pin-compatible devices.

Key specifications of the AD9642 14-bit high-speed A/D converter:
• SNR = 70.9dBFS (200MHz AIN, 250MSPS)
• SFDR = 86dBc (200MHz AIN, 250MSPS)
• Input noise of -152.0 dBFS/Hz (200 MHz, -1 dBFS AIN, 250 MSPS)
• Total power consumption: 360mW@250MSPS
• The AD9634 high-speed A/D converter and AD6672 IF receiver are 12-bit and 11-bit pin-compatible devices.

Price and Supply

border=1 cellPadding=0 width=642>

product

t; mso-bidi-font-family: 'Malgun Gothic'">Sample Supply Status