The AD6600/AD6620 Diversity Receiver chipset is a highly integrated chipset that reduces the size and cost of base station receivers. It incorporates Automatic Gain Control, Received Signal Strength Indicator, high-resolution Numerically Controlled Oscillator, and digital filtering on-chip. The chipset can address various air interface standards, including GSM, CDMA, IS136, and PHS, as well as proprietary modulation schemes for paging systems and wireless fixed access receivers.
Analog Devices presents a highly integrated Diversity Receiver chipset comprising the AD6600 dual-channel IF sampling ADC and the AD6620 dual-channel decimating receiver chip. This solution is designed to reduce the size and cost of base station receivers by replacing sensitive analog filters with on-chip digital filtering.
The chipset supports various air interface standards, including GSM, CDMA, S136, and PHS. Key features include a high dynamic range of 80 to 100+ dB, automatic gain control, and compatibility with general-purpose DSPs. The AD6600 provides an 11-bit 20 MSPS ADC, while the AD6620 offers a spurious free dynamic range greater than 100 dB.
| ADC Resolution (AD6600) | 11-bit |
|---|---|
| Sample Rate (AD6600) | 20 MSPS |
| Dynamic Range (AD6600) | 90 dB instantaneous |
| SFDR (AD6620) | >100 dB |
| Sample Rate (AD6620) | 65 MSPS |
| Package (AD6620) | 80-pin PQFP |
The chipset can address GSM, CDMA, S136, and PHS, as well as proprietary modulation schemes for paging systems.
It replaces sensitive analog filters with on-chip digital filtering, which eliminates the need for high-cost analog filters.
The chipset accepts common intermediate frequencies between 70 and 250 MHz.