385 MHz BW IF Diversity Receiver

The AD6674 is a 385 MHz bandwidth mixed-signal intermediate frequency (IF) receiver. It consists of two, 14-bit 1.0 GSPS/750 MSPS/500 MSPS analog-to-digital converters (ADC) 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-and-hold circuit designed for low power, small size, and ease of use. This product is designed to support communications applications capable of sampling wide bandwidth analog signals of up to 2 GHz. The AD6674 is optimized for wide input bandwidth, high sampling rate, excellent linearity, and low power in a small package.

The dual ADC cores feature a multistage, differential pipelined architecture with integrated output error correction logic. Each ADC features wide bandwidth inputs supporting a variety of user-selectable input ranges. An integrated voltage reference eases design considerations.

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

* JESD204B (Subclass 1) coded serial digital outputs

* In band SFDR = 83 dBFS at 340 MHz (750 MSPS)

* In band SNR = 66.7 dBFS at 340 MHz (750 MSPS)

* 1.4 W total power per channel at 750 MSPS (default settings)

* Noise density = −153 dBFS/Hz at 750 MSPS

* 1.25 V, 2.5 V, and 3.3 V dc supply operation

* Flexible input range

* AD6674-750 and AD6674-1000

* 1.46 V p-p to 1.94 V p-p (1.70 V p-p nominal)

* AD6674-500

* 1.46 V p-p to 2.06 V p-p (2.06 V p-p nominal)

* 95 dB channel isolation/crosstalk