Overview
The ADF4355-2BCPZ-RL7 is a microwave wideband synthesizer produced by Analog Devices Inc. This component is designed to implement fractional-N or integer-N phase-locked loop (PLL) frequency synthesizers when used with an external loop filter and an external reference frequency. It features an integrated voltage-controlled oscillator (VCO) with a fundamental output frequency ranging from 3400 MHz to 6800 MHz. The device supports a wide range of RF output frequencies from 53.125 MHz to 4400 MHz through a series of programmable frequency dividers.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Description |
|---|---|---|---|---|---|
| VCO Frequency Range | 3400 | 6800 | MHz | Fundamental VCO range | |
| RF Output Frequency | 53.125 | 4400 | MHz | RF output frequency range | |
| Analog Power Supply | 3.15 | 3.3 | 3.45 | V | Analog power supply voltage range |
| Charge Pump and VCO Power Supplies | 4.75 | 5.0 | 5.25 | V | Charge pump and VCO power supply voltage range |
| Logic Compatibility | 1.8 | V | Logic compatibility voltage | ||
| Output Dividers Current | 6 | mA | Current consumption per output divider | ||
| RF Output Stage Current | 16/20/42/55 | mA | RF output stage current (varies with configuration) | ||
| Low Power Sleep Mode Current | 500 | µA | Current in low power sleep mode | ||
| Hardware Power-Down Current | 1000 | µA | Current in hardware power-down mode |
Key Features
- Fractional-N and integer-N synthesizer capabilities
- High resolution 38-bit modulus
- Low phase noise, voltage-controlled oscillator (VCO)
- Programmable divide by 1, 2, 4, 8, 16, 32, or 64 output
- Analog and digital power supplies: 3.3 V, with charge pump and VCO supplies: 5 V typical
- Logic compatibility: 1.8 V
- Programmable dual modulus prescaler of 4/5 or 8/9
- Programmable output power level
- RF output mute function, controllable by pin and software
- 3-wire serial interface for register control
- Analog and digital lock detect
- Hardware and software power-down modes
Applications
- Wireless infrastructure (W-CDMA, TD-SCDMA, WiMAX, GSM, PCS, DCS, DECT)
- Point to point/point to multipoint microwave links
- Satellites/VSATs
- Test equipment/instrumentation
- Clock generation
Q & A
- What is the fundamental VCO frequency range of the ADF4355-2?
The fundamental VCO frequency range is from 3400 MHz to 6800 MHz.
- What are the possible RF output frequencies generated by the ADF4355-2?
The RF output frequencies range from 53.125 MHz to 4400 MHz.
- What are the power supply voltage ranges for the ADF4355-2?
The analog power supply voltage range is 3.15 V to 3.45 V, and the charge pump and VCO power supplies range from 4.75 V to 5.25 V.
- What is the logic compatibility voltage of the ADF4355-2?
The logic compatibility voltage is 1.8 V.
- Can the RF output stage be muted, and if so, how?
Yes, the RF output stage can be muted, and this function is controllable by both pin and software.
- What interface is used for controlling the on-chip registers?
A simple 3-wire serial interface is used for controlling the on-chip registers.
- What are the power-down modes available for the ADF4355-2?
The device has both hardware and software power-down modes.
- What is the current consumption in low power sleep mode?
The current consumption in low power sleep mode is 500 µA.
- What is the current consumption in hardware power-down mode?
The current consumption in hardware power-down mode is 1000 µA.
- What are some typical applications of the ADF4355-2?
Typical applications include wireless infrastructure, point to point/point to multipoint microwave links, satellites/VSATs, test equipment/instrumentation, and clock generation.
