135 MHz BW IF Diversity Receiver
Data Sheet
135 MHz BW IF Diversity Receiver AD6679
FEATURES
Parallel LVDS (DDR) outputs In-band SFDR = 82 dBFS at 340 ...
Description
Data Sheet
135 MHz BW IF Diversity Receiver AD6679
FEATURES
Parallel LVDS (DDR) outputs In-band SFDR = 82 dBFS at 340 MHz (500 MSPS) In-band SNR = 67.8 dBFS at 340 MHz (500 MSPS) 1.1 W total power per channel at 500 MSPS (default settings) Noise density = −153 dBFS/Hz at 500 MSPS 1.25 V, 2.50 V, and 3.3 V dc supply operation Flexible input range
1.46 V p-p to 2.06 V p-p (2.06 V p-p nominal) 95 dB channel isolation/crosstalk Amplitude detect bits for efficient automatic gain control
(AGC) implementation Noise shaping requantizer (NSR) option for main receiver
function Variable dynamic range (VDR) option for digital
predistortion (DPD) function 2 integrated wideband digital processors per channel
12-bit numerically controlled oscillator (NCO), up to 4 cascaded half-band filters
Differential clock inputs Integer clock divide by 1, 2, 4, or 8 Energy saving power-down modes Small signal dither
APPLICATIONS
Diversity multiband, multimode digital receivers
3G/4G, TD-SCDMA, W-CDMA, GSM, LTE, LTE-A
DOCSIS 3.0 CMTS upstream receive paths
HFC digital reverse path receivers
GENERAL DESCRIPTION
The AD6679 is a 135 MHz bandwidth mixed-signal intermediate frequency (IF) receiver. It consists of two, 14-bit, 500 MSPS analog-to-digital converters (ADCs) and various digital signal processing blocks consisting of four wideband DDCs, an NSR, and VDR monitoring. It has an on-chip buffer and a sample-andhold circuit designed for low power, small size, and ease of use. This product is designed t...
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