Overview
The ADF4112 is a high-performance, integer-N phase-locked loop (PLL) frequency synthesizer from Analog Devices Inc. This device is designed to implement local oscillators in the up-conversion and down-conversion sections of wireless communication systems. It offers a wide range of features that make it suitable for various RF and microwave applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Frequency Range | Up to 3 GHz | |
| Supply Voltage | 2.7 V to 5.5 V | V |
| Operating Temperature Range | −40°C to +85°C | °C |
| Package Type | 20-Lead Frame Chip Scale Package (LFCSP) | |
| Reference Input Frequency | Up to 250 MHz | Hz |
| Phase Detector Frequency | Up to 1 MHz | Hz |
| Loop Bandwidth | Up to 20 kHz | Hz |
Key Features
- Integer-N PLL frequency synthesizer with a wide operating frequency range up to 3 GHz.
- Supports reference input frequencies up to 250 MHz and phase detector frequencies up to 1 MHz.
- Low noise and high stability due to its integrated charge pump and phase frequency detector.
- Programmable R, N, and A counters for flexible frequency synthesis.
- Low power consumption with the ability to power down when not in use.
- Compact 20-lead LFCSP package.
Applications
The ADF4112 is widely used in various wireless communication systems, including cellular base stations, satellite communications, and other RF and microwave applications. It is also suitable for use in test and measurement equipment, radar systems, and any application requiring high-frequency signal generation.
Q & A
- What is the operating frequency range of the ADF4112?
The ADF4112 operates up to 3 GHz. - What is the supply voltage range for the ADF4112?
The supply voltage range is from 2.7 V to 5.5 V. - What is the operating temperature range of the ADF4112?
The operating temperature range is −40°C to +85°C. - What type of package does the ADF4112 come in?
The ADF4112 comes in a 20-Lead Frame Chip Scale Package (LFCSP). - What are the reference input and phase detector frequencies for the ADF4112?
The reference input frequency can be up to 250 MHz, and the phase detector frequency can be up to 1 MHz. - Can the ADF4112 be powered down when not in use?
Yes, the ADF4112 can be powered down when not in use to conserve power. - What are some common applications of the ADF4112?
The ADF4112 is used in cellular base stations, satellite communications, test and measurement equipment, and other RF and microwave applications. - What is the loop bandwidth of the ADF4112?
The loop bandwidth can be up to 20 kHz. - Does the ADF4112 have programmable counters?
Yes, the ADF4112 has programmable R, N, and A counters for flexible frequency synthesis. - What is the thermal impedance of the LFCSP package for the ADF4112?
The thermal impedance of the LFCSP package (paddle soldered) is 122°C/W.
