- ADI's 2-channel high-performance 14-bit 125MSPS A/D converter 'AD9645' reduces total power consumption and board area by up to 22% and 30%, respectively, compared to competing solutions.

- Suitable for the latest 3G and 4G multi-standard mobile communication infrastructure equipment, battery-powered portable measuring instruments and scopes, portable medical devices, etc.

July 17, 2012 – Analog Devices ( www.analog.com , NASDAQ: ADI), a leader in high-performance signal processing technology and the data converter market that has maintained its position as the global market leader for data converters for 47 years, today launched a 2-channel high-performance 14-bit 125 MSPS A/D converter capable of reducing overall power consumption by up to 22% compared to competing solutions. The new product is characterized by cost-effectiveness and functional flexibility, as well as providing faster speeds and a wider dynamic range under lower power consumption conditions. The new AD9645 A/D converter is available in a 5mm × 5mm package, occupying 30% less board space than its closest competitor. The new converter meets the performance and size requirements of modern 3G and 4G multi-standard mobile communication infrastructure equipment, such as CDMA2000, WB-CDMA, LTE, TD-SCDMA, and multi-carrier GSM. In addition to the communications field, it is also suitable for battery-powered portable measuring instruments, scopes, and portable medical devices.

The dual AD9645 A/D converter consumes only 122mW per channel at 125MSPS (mega samples per second) performance conditions and provides an excellent spurious-free dynamic range (SFDR) of 91dBc at 70MHz. This device is designed for use in multi-mode digital receiver architectures with an intermediate frequency (IF) sampling range of up to 200MHz. The pin-compatible dual 12-bit product, the AD9635, is also available, allowing users to easily handle design migration between 12-bit and 14-bit converters providing sampling rates from 20MSPS to 125MSPS.

The AD9645 dual AD converter features a multiphase differential pipeline architecture with integrated output-error-correction logic. The AD9645 is available as a RoHS-compliant 32-lead LFCSP and is specified to operate over an industrial temperature range of –40°C to +85°C. This dual A/D converter provides space-saving serial LVDS digital outputs via two lanes per channel.

Key specifications of the AD9645 14-bit high-speed A/D converter
• fIN = SNR = 74.3 dBFS @ 125 MSPS at maximum Nyquist frequency
• fIN = ENOB = 12 bits under maximum Nyquist frequency conditions
• SFDR = 91dBc at fIN = 70 MHz
• Excellent DC linearity:
o DNL = ±0.65 LSB(typ)
o INL = ±1.5 LSB(typ)

Price , supply status, and complementary product information

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product	Mass production supply	Sampling rate (MSPS)	Price per 1,000
AD9645 Dual 14-bit	Supplying	125	$51.99	32-Lead LFCSP 5 mm × 5 mm
		$27.99
AD9635 Dual 12-bit	Supplying	125	$29.49
		80	$18.69

Recommended driver amplifier for AD9645
• ADL5562 differential amplifier with ultra-low distortion characteristics for differential RF/IF input
• For DC-coupled input, ADA4927-2 or ADA4938-2 A/D converter driver

Recommended clock driver for AD9645
For cases requiring low jitter performance, the AD9510, AD9511, AD9512, AD9513, AD9514, and AD9515 clock distribution solution product families are available.

• DataDownload and Sample Order:
o AD9645 14-bit Dual A/D Converter: http://www.analog.com/AD9645
o AD9635 12-bit Dual A/D Converter: http://www.analog.com/AD9635
• Get support from ADI's online technical support community, Engineer Zone™: http://ez.analog.com/community/data_converters/high-speed_adcs