The new converters meet the performance and small size requirements of the latest 3G and 4G multi-standard cellular infrastructure equipment such as CDMA2000, WB-CDMA, LTE, TD-SCDMA and multi-carrier GSM. Other applications include battery-powered, hand-held instruments, scopes and portable medical devices.
The 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. The AD9648 is pin compatible with many of ADI’s 16-, 14-, 12- and 10-bit A/D converters, enabling an easy migration path between 10-bit and 16-bit converters sampling from 20 MSPS to 125 MSPS.
Analog Devices 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. It features an SNR (signal-to-noise ratio) of 72.2 dBFS and SFDR of 90 dBc at base band, while consuming only 360 mW at 250 MSPS.
AD9648 14-bit High-speed A/D Converter 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
12-bit and 10-bit pin compatible devices include AD9628 and AD9608 high-speed A/D converters
AD9642 14-bit High-speed A/D Converter 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
12-bit and 11-bit pin compatible devices include AD9634 high-speed A/D converter and the AD6672 IF receiver
