14位， 170 MSPS / 210 MSPS / 250 MSPS ， 1.8 V模拟数字转换器（ ADC ） 14-Bit, 170 MSPS/210 MSPS/250 MSPS, 1.8 V Analog-to-Digital Converter ADC
GENERAL DESCRIPTION
The AD9642is a 14-bit analog-to-digital converter ADC with sampling speeds of up to 250 MSPS. The AD9642is designed to support communications applications, where low cost, small size, wide bandwidth, and versatility are desired.
FEATURES
SNR = 71.0 dBFS at 185 MHz AINand 250 MSPS
SFDR = 83 dBc at 185 MHz AINand 250 MSPS
−152.0 dBFS/Hz input noise at 200 MHz, −1 dBFS AIN, 250 MSPS
Total power consumption: 390 mW at 250 MSPS
1.8 V supply voltages
LVDS ANSI-644 levels outputs
Integer 1-to-8 input clock divider 625 MHz maximum input
Sample rates of up to 250 MSPS
Internal ADC voltage reference
Flexible analog input range
1.4 V p-p to 2.0 V p-p 1.75 V p-p nominal
ADC clock duty cycle stabilizer
Serial port control
Energy saving power-down modes
APPLICATIONS
Communications
Diversity radio systems
Multimode digital receivers 3G
TD-SCDMA, WiMAX, WCDMA, CDMA2000, GSM, EDGE, LTE
I/Q demodulation systems
Smart antenna systems
General-purpose software radios
Ultrasound equipment
Broadband data applications