ADF4212BRUZ

Overview

The ADF4212BRUZ is a dual RF/IF Integer-N PLL frequency synthesizer from Analog Devices, designed for local oscillator generation in wireless transceivers. It integrates two independent synthesizers covering 0.15 GHz to 2.7 GHz (RF) and 60 MHz to 1.0 GHz (IF). Operating on a 2.7 V to 5.5 V supply, it features programmable dual-modulus prescalers (8/9, 16/17, 32/33, 64/65), separate charge pump supplies (VP) for extended tuning voltage, and a 3-wire serial interface. The device includes analog and digital lock detect, Fastlock mode, and power-down capabilities, housed in a 20-lead TSSOP package.

Feature Summary

• Dual synthesizers: RF section (0.15–2.7 GHz) and IF section (60 MHz–1.0 GHz)
• Programmable dual-modulus prescaler options: 8/9, 16/17, 32/33, or 64/65
• Separate charge pump supply pins (VP1, VP2) allow up to 6 V tuning in 3 V systems
• Integrated analog and digital lock detect with MUXOUT access

Applications

• Base stations for GSM, PCS, DCS, CDMA, and WCDMA
• Wireless handsets and LANs
• Communications test equipment
• CATV equipment

Procurement Notes

Verify the specific suffix 'RU' corresponds to the 20-lead Thin Shrink Small Outline Package (TSSOP) as defined in the ordering guide. Confirm the 'B' version indicates an industrial temperature range of -40°C to +85°C. Ensure ESD precautions are observed during handling due to the device's sensitivity.

Selection Notes

Select the ADF4212BRUZ when RF frequencies up to 2.7 GHz and IF frequencies up to 1.0 GHz are required. Choose this model over the ADF4210 or ADF4211 if higher RF bandwidth is needed. Ensure the external VCO tuning voltage requirements align with the separate VP supply capability for low-voltage systems.

Part Context

The ADF4212BRUZ belongs to the ADF421x family, which also includes the ADF4210, ADF4211, and ADF4213. These devices share identical pinouts, control interfaces, and internal architectures, differing primarily in their maximum operating frequency ranges. The BRU variant specifically denotes the TSSOP-20 package option.

Replacement Considerations

Direct functional replacements within the same package include the ADF4210BRUZ, ADF4211BRUZ, and ADF4213BRUZ. Selection depends on whether the specific RF/IF frequency coverage of the substitute meets the design requirements.