D6600-760(D6600760)

PRODUCT DESCRIPTION

The AD6600 mixed-signal receiver chip directly samples signals at analog input frequencies up to 250 MHz. The device includes two input channels, each with 1 GHz input amplifiers and 30 dB of automatic gain-ranging circuitry. Both channels are sampled with a 450 MHz track-and-hold followed by an 11-bit, 20 MSPS analog-to-digital converter. Digital RSSI outputs, an A/B channel indicator, a 2× Clock output, references, and con trol circuitry are all on- chip. Digital output signals are two’s complement, CMOS-compatible and interface directly to 3.3 V or 5 V digital processing chips.

FEATURES

Dual IF Inputs, 70 MHz–250 MHz
Diversity or Two Independent IF Signals
Separate Attenuation Paths
Oversample RF Channels
20 MSPS on a Single Carrier
10 MSPS/Channel in Diversity Mode
Total Signal Range 90+ dB
30 dB from Automatic Gain-Ranging (AGC)
60 dB from A/D Converter
Range >100 dB After Processing Gain
Digital Outputs
11-Bit ADC Word
3-Bit RSSI Word
2x Clock, A/B Indicator
Single 5 V Power Supply
Output DVCC 3.3 V or 5 V
775 mW Power Dissipation

APPLICATIONS

Communications Receivers
PCS/Cellular Base Stations
GSM, CDMA, TDMA
Wireless Local Loop, Fixed Access