Overview
The ADF4371BCCZ-RL7 from Analog Devices Inc. is a highly versatile and wideband microwave phase-locked loop (PLL) frequency synthesizer. This device is designed to implement both fractional-N and integer-N PLL frequency synthesizers when used with an external loop filter and an external reference frequency. The integrated voltage-controlled oscillator (VCO) allows for the generation of frequencies ranging from 62.5 MHz to 32 GHz, making it suitable for a variety of high-frequency applications.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|---|
| Supply Voltage (Except VCO) | AVDD | 3.15 | 3.45 | V | ||
| VCO Power Supply | 5 | V | ||||
| Output Frequency (RF8x) | 62.5 | 8000 | MHz | |||
| Output Frequency (RF16x) | 8000 | 16000 | MHz | 2 × VCO output | ||
| Output Frequency (RF32x) | 16000 | 32000 | MHz | 4 × VCO output | ||
| VCO Sensitivity (KV) at 5 V | 80 | MHz/V | VCO frequency = 6 GHz | |||
| VCO Sensitivity (KV) at 3.3 V | 60 | MHz/V | VCO frequency = 6 GHz | |||
| SCLK Frequency | fSCLK | 50 | MHz |
Key Features
- Integrated wideband microwave VCO with a fundamental output frequency ranging from 4000 MHz to 8000 MHz.
- Frequency generation from 62.5 MHz to 32 GHz through divide-by circuits and frequency multipliers.
- Support for both fractional-N and integer-N PLL frequency synthesizers.
- Hardware and software power-down modes for power management.
- Control of all on-chip registers through a 3-wire interface.
- Harmonic filters to suppress unwanted products of frequency multiplication.
Applications
- Wireless infrastructure (multicarrier global system for mobile communication (MC-GSM), 5G).
- Test equipment and instrumentation.
- Clock generation.
- Aerospace and defense.
Q & A
- What is the operating voltage range for the ADF4371BCCZ-RL7?
The device operates with analog and digital power supplies ranging from 3.15 V to 3.45 V, and 5 V for the VCO power supply.
- What is the frequency range of the integrated VCO?
The integrated VCO has a fundamental output frequency ranging from 4000 MHz to 8000 MHz.
- How does the ADF4371BCCZ-RL7 generate frequencies below 4000 MHz?
The device uses divide-by circuits (1, 2, 4, 8, 16, 32, or 64) to generate frequencies as low as 62.5 MHz.
- What are the frequency ranges for RF16x and RF32x outputs?
The RF16x output generates frequencies from 8 GHz to 16 GHz, and the RF32x output generates frequencies from 16 GHz to 32 GHz.
- Does the ADF4371BCCZ-RL7 have power-down modes?
Yes, the device includes both hardware and software power-down modes for power management.
- How is the control of on-chip registers achieved?
Control of all on-chip registers is through a 3-wire interface.
- What is the purpose of the harmonic filters in the ADF4371BCCZ-RL7?
The harmonic filters suppress the unwanted products of frequency multiplication between the multipliers and the output stages of RF16x and RF32x.
- What are some typical applications of the ADF4371BCCZ-RL7?
Typical applications include wireless infrastructure, test equipment, clock generation, and aerospace and defense.
- What is the maximum SCLK frequency for the serial port interface?
The maximum SCLK frequency is 50 MHz.
- What is the temperature range for maintaining lock without reprogramming the device?
The device maintains lock without reprogramming up to a temperature of 125 °C.
