Overview
The ADF4001BRU, produced by Analog Devices Inc., is a high-performance integer-N frequency synthesizer designed to meet the demanding requirements of Phase-Locked Loops (PLLs) that need stable and low-noise reference signals. This device integrates a low-noise digital Phase Frequency Detector (PFD), a precision charge pump, a programmable reference divider, and a programmable 13-bit N counter. Additionally, it includes a 14-bit reference counter, allowing for selectable REFIN frequencies at the PFD input. The ADF4001BRU can be used to implement complete PLLs when combined with an external loop filter and a Voltage Controlled Oscillator (VCO) or Voltage Controlled Crystal Oscillator (VCXO).
Key Specifications
| Parameter | Value | Unit | Comments |
|---|---|---|---|
| Supply Voltage | 2.7 V to 5.5 V | V | |
| Operating Temperature | -40°C to +85°C | °C | |
| Maximum Input Frequency | 200 MHz | Hz | |
| Minimum Input Frequency | 10 MHz | Hz | |
| Package Type | 16-Lead TSSOP | ||
| Mounting Style | Surface Mount | ||
| Operating Supply Current | 4.5 mA (typical) | mA | At 5 V supply |
| Phase Noise Floor | -161 dBc/Hz (typical) @ 200 kHz | dBc/Hz |
Key Features
- Low noise digital Phase Frequency Detector (PFD) and precision charge pump
- Programmable reference divider and 13-bit N counter
- 14-bit reference counter for selectable REFIN frequencies
- Separate charge pump supply (VP) allows extended tuning voltage in 5 V systems
- Programmable charge pump currents
- 3-wire serial interface
- Hardware and software power-down mode
- Analog and digital lock detect
- Ultralow phase noise and low jitter clock source
Applications
- Clock generation for PLLs requiring low noise and stable reference signals
- Low frequency PLLs
- Low jitter clock sources
- Clock smoothing and frequency translation
- SONET, ATM, ADM, DSLAM, and SDM applications
Q & A
- What is the primary function of the ADF4001BRU?
The ADF4001BRU is a frequency synthesizer designed to generate stable and low-noise reference signals for Phase-Locked Loops (PLLs).
- What is the operating temperature range of the ADF4001BRU?
The operating temperature range is -40°C to +85°C.
- What is the maximum input frequency of the ADF4001BRU?
The maximum input frequency is 200 MHz.
- What type of package does the ADF4001BRU come in?
The ADF4001BRU comes in a 16-Lead TSSOP package.
- Does the ADF4001BRU support power-down modes?
- What is the typical operating supply current of the ADF4001BRU?
- What are some of the key applications of the ADF4001BRU?
- Does the ADF4001BRU have programmable charge pump currents?
- What is the phase noise floor of the ADF4001BRU?
- Is the ADF4001BRU compatible with RoHS standards?
