Overview
The ADF4350ABCPZ from Analog Devices Inc. is a highly versatile and integrated phase-locked loop (PLL) frequency synthesizer. This device is designed to support both fractional-N and integer-N PLL configurations, making it suitable for a wide range of RF applications. The ADF4350 features an integrated voltage-controlled oscillator (VCO) with a fundamental output frequency range of 2200 MHz to 4400 MHz. Additionally, it includes divide-by-1, -2, -4, -8, or -16 circuits, allowing for the generation of RF output frequencies as low as 137.5 MHz. The device operates with a power supply ranging from 3.0 V to 3.6 V and can be controlled via a simple 3-wire serial interface.
Key Specifications
| Parameter | Value | Unit | Comments |
|---|---|---|---|
| Output Frequency Range | 137.5 MHz to 4400 MHz | MHz | Fundamental VCO range: 2200 MHz to 4400 MHz |
| Power Supply Voltage | 3.0 V to 3.6 V | V | |
| Logic Compatibility | 1.8 V | V | CMOS, TTL compatible |
| Maximum RF Output Power | 5 dBm | dBm | |
| VCO Phase Noise | -89 dBc/Hz @ 10 kHz offset from 2.2 GHz carrier | dBc/Hz | Varying offsets provide different noise levels |
| RMS Jitter | < 0.4 ps | ps | |
| Package Type | 32-WFQFN Exposed Pad, CSP | ||
| Operating Temperature | -40°C to 85°C | °C | |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) |
Key Features
- Integrated voltage-controlled oscillator (VCO) with a fundamental output frequency range of 2200 MHz to 4400 MHz.
- Divide-by-1, -2, -4, -8, or -16 circuits for generating RF output frequencies as low as 137.5 MHz.
- Fractional-N and integer-N phase-locked loop (PLL) frequency synthesizer capabilities.
- Low phase noise VCO and programmable output power level.
- RF output mute function, both pin- and software-controllable.
- Auxiliary RF output that can be powered down if not in use.
- 3-wire serial interface for control of all on-chip registers.
- Analog and digital lock detect, and switched bandwidth fast-lock mode.
- Cycle slip reduction for improved stability.
Applications
- Wireless infrastructure (W-CDMA, TD-SCDMA, WiMAX, GSM, PCS, DCS, DECT).
- Test equipment.
- Wireless LANs and CATV equipment.
- Clock generation.
Q & A
- What is the fundamental output frequency range of the ADF4350's VCO?
The fundamental output frequency range of the ADF4350's VCO is from 2200 MHz to 4400 MHz.
- What are the available divide-by options for the RF output?
The ADF4350 offers divide-by-1, -2, -4, -8, or -16 circuits for the RF output.
- What is the power supply voltage range for the ADF4350?
The power supply voltage range for the ADF4350 is from 3.0 V to 3.6 V.
- What type of logic compatibility does the ADF4350 support?
The ADF4350 supports 1.8 V CMOS and TTL logic compatibility.
- What is the maximum RF output power of the ADF4350?
The maximum RF output power of the ADF4350 is 5 dBm.
- How is the RF output mute function controlled?
The RF output mute function can be controlled both via a pin and through software.
- What type of interface does the ADF4350 use for control?
The ADF4350 uses a 3-wire serial interface for control of all on-chip registers.
- What are some of the key applications for the ADF4350?
The ADF4350 is used in wireless infrastructure, test equipment, wireless LANs, CATV equipment, and clock generation.
- What is the operating temperature range of the ADF4350?
The operating temperature range of the ADF4350 is from -40°C to 85°C.
- Is the ADF4350 RoHS compliant?
Yes, the ADF4350 is RoHS compliant.
