Overview
The ADF4355-3BCPZ-RL7, produced by Analog Devices Inc., is a microwave wideband synthesizer with an integrated voltage-controlled oscillator (VCO). This device is designed to implement fractional-N or integer-N phase-locked loop (PLL) frequency synthesizers. It operates with an external loop filter and an external reference frequency, offering high resolution and low phase noise. The synthesizer supports a wide range of output frequencies from 51.5625 MHz to 6600 MHz, making it versatile for various applications in wireless infrastructure, microwave links, and test equipment.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| VCO Frequency Range | 3300 | 6600 | MHz | Fundamental VCO range | |
| RF Output Frequency | 51.5625 | 6600 | MHz | ||
| VCO Sensitivity | 63 | MHz/V | |||
| Frequency Pushing (Open-Loop) | 22 | MHz/V | |||
| Frequency Pulling (Open-Loop) | 0.54 | MHz | VSWR = 2:1 | ||
| Harmonic Content (Second) | -27 | dBc | Fundamental VCO output (RFOUTA+) | ||
| Harmonic Content (Third) | -20 | dBc | Fundamental VCO output (RFOUTA+) | ||
| Power Supplies | 3.1515 | 3.3 | 3.4485 | V | Analog, digital, charge pump, and VCO power supplies |
| Logic Compatibility | 1.8 V, 3.3 V | ||||
| RF Output Mute Function | Pin- and software-controllable |
Key Features
- Fractional-N and integer-N synthesizer capabilities
- High resolution 38-bit modulus
- Low phase noise, integrated VCO with a frequency range of 3300 MHz to 6600 MHz
- Programmable divide by 1, 2, 4, 8, 16, 32, or 64 output
- Programmable dual modulus prescaler of 4/5 or 8/9
- Programmable output power level
- RF output mute function, both pin- and software-controllable
- 3-wire serial interface for control of all on-chip registers
- 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 primary function of the ADF4355-3BCPZ-RL7?
The ADF4355-3BCPZ-RL7 is a microwave wideband synthesizer designed to implement fractional-N or integer-N phase-locked loop (PLL) frequency synthesizers. - What is the frequency range of the integrated VCO?
The integrated VCO operates within a frequency range of 3300 MHz to 6600 MHz. - What are the possible output frequency divisions?
The device allows output frequency divisions by 1, 2, 4, 8, 16, 32, or 64. - Is the RF output mute function controllable?
Yes, the RF output mute function is both pin- and software-controllable. - What is the logic compatibility of the device?
The device is compatible with 1.8 V and 3.3 V logic. - What are the power supply requirements?
The device operates with power supplies ranging from 3.1515 V to 3.4485 V for analog, digital, charge pump, and VCO. - Does the device support power-down modes?
Yes, the device supports both hardware and software power-down modes. - What is the interface used for controlling the device?
The device uses a 3-wire serial interface for controlling all on-chip registers. - What are some common applications of the ADF4355-3BCPZ-RL7?
Common applications include wireless infrastructure, point to point/multipoint microwave links, satellites/VSATs, test equipment/instrumentation, and clock generation. - What is the significance of the 38-bit modulus in the ADF4355-3BCPZ-RL7?
The 38-bit modulus provides high resolution for the synthesizer, allowing for precise frequency control.
