Overview
The ADF4252BCPZ-RL is a dual fractional-N/integer-N frequency synthesizer produced by Analog Devices Inc. This device is designed to implement local oscillators (LO) in the upconversion and downconversion sections of wireless receivers and transmitters. It features a low noise digital phase frequency detector (PFD), a precision charge pump, and programmable reference dividers. The synthesizer includes a Σ-Δ-based fractional interpolator for the RF synthesizer and programmable integer-N counters for the IF synthesizer. It operates with a simple 3-wire serial interface and supports power-down mode when not in use.
Key Specifications
| Parameter | Value |
|---|---|
| Operating Temperature Range | −40°C to +85°C |
| Storage Temperature Range | −65°C to +150°C |
| Maximum Junction Temperature | 150°C |
| Package Type | 24-Lead Lead Frame Chip Scale Package (LFCSP) |
| Power Supply Voltage | 2.7 V to 3.3 V |
| Frequency Range | Up to 3 GHz |
| Phase Frequency Detector (PFD) Frequency | Up to 20 MHz |
| Channel Step Resolution | 200 kHz |
| Thermal Impedance (θJA) | 122°C/W |
| Reflow Soldering Peak Temperature | 260°C |
Key Features
- Dual fractional-N/integer-N frequency synthesizer
- Low noise digital phase frequency detector (PFD) and precision charge pump
- Σ-Δ-based fractional interpolator for RF synthesizer and programmable integer-N counters for IF synthesizer
- 3-wire serial interface for control of on-chip registers
- Power-down mode for reduced power consumption
- Digital lock detect and programmable modulus on fractional-N synthesizer
- Trade-off between noise and spurious performance
Applications
- Base stations for mobile radio (GSM, PCS, DCS, CDMA, WCDMA)
- Wireless handsets (GSM, PCS, DCS, CDMA, WCDMA)
- Wireless LANs
- Communications test equipment
- CATV equipment
Q & A
- What is the primary function of the ADF4252BCPZ-RL?
The ADF4252BCPZ-RL is a dual fractional-N/integer-N frequency synthesizer used to implement local oscillators (LO) in wireless receivers and transmitters. - What is the operating temperature range of the ADF4252BCPZ-RL?
The operating temperature range is −40°C to +85°C. - What type of package does the ADF4252BCPZ-RL use?
The device is packaged in a 24-Lead Lead Frame Chip Scale Package (LFCSP). - What is the power supply voltage range for the ADF4252BCPZ-RL?
The power supply voltage range is 2.7 V to 3.3 V. - What are the key components of the ADF4252BCPZ-RL?
The key components include a low noise digital phase frequency detector (PFD), a precision charge pump, and programmable reference dividers. - What is the maximum frequency range supported by the ADF4252BCPZ-RL?
The device supports frequencies up to 3 GHz. - What is the purpose of the 3-wire serial interface?
The 3-wire serial interface is used for control of all the on-chip registers. - Does the ADF4252BCPZ-RL support power-down mode?
Yes, the device supports power-down mode to reduce power consumption when not in use. - What are some common applications of the ADF4252BCPZ-RL?
Common applications include base stations for mobile radio, wireless handsets, wireless LANs, communications test equipment, and CATV equipment. - What is the thermal impedance (θJA) of the ADF4252BCPZ-RL?
The thermal impedance (θJA) is 122°C/W.
