Overview
The ADF4252BCPZ 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. Control of all on-chip registers is via a simple 3-wire interface.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | 24-Lead Lead Frame Chip Scale Package (LFCSP) |
| Operating Temperature | -40°C to +85°C |
| Supply Voltage | 2.7 V to 3.3 V |
| Interface | 3-wire serial interface |
| RF Synthesizer | Σ-Δ-based fractional interpolator |
| IF Synthesizer | Programmable integer-N counters |
| Phase Frequency Detector | Low noise digital PFD |
| Charge Pump | Precision charge pump |
| Reference Divider | Programmable reference divider |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) |
Key Features
- Dual fractional-N/integer-N frequency synthesizer
- Low noise digital phase frequency detector (PFD)
- Precision charge pump
- Programmable reference divider
- Σ-Δ-based fractional interpolator for RF synthesizer
- Programmable integer-N counters for IF synthesizer
- 3-wire serial interface for control of on-chip registers
- Digital lock detect and power-down mode
- 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 ADF4252BCPZ used for?
The ADF4252BCPZ is used to implement local oscillators (LO) in the upconversion and downconversion sections of wireless receivers and transmitters.
- What type of package does the ADF4252BCPZ come in?
The ADF4252BCPZ comes in a 24-Lead Lead Frame Chip Scale Package (LFCSP).
- What is the operating temperature range of the ADF4252BCPZ?
The operating temperature range is -40°C to +85°C.
- What is the supply voltage range for the ADF4252BCPZ?
The supply voltage range is 2.7 V to 3.3 V.
- What type of interface does the ADF4252BCPZ use?
The ADF4252BCPZ uses a 3-wire serial interface.
- Does the ADF4252BCPZ support power-down mode?
Yes, the ADF4252BCPZ supports power-down mode.
- What are the key components of the RF and IF synthesizers in the ADF4252BCPZ?
The RF synthesizer includes a Σ-Δ-based fractional interpolator, and the IF synthesizer includes programmable integer-N counters. Both synthesizers have a low noise digital PFD and a precision charge pump.
- What are some common applications of the ADF4252BCPZ?
Common applications include base stations for mobile radio, wireless handsets, wireless LANs, communications test equipment, and CATV equipment.
- How does the ADF4252BCPZ manage noise and spurious performance?
The ADF4252BCPZ allows for a trade-off between noise and spurious performance, enabling optimization based on specific application requirements.
- What is the moisture sensitivity level (MSL) of the ADF4252BCPZ?
The moisture sensitivity level (MSL) is 3 (168 Hours).
