Overview
The ADF4157BRUZ is a 6 GHz fractional-N frequency synthesizer produced by Analog Devices Inc. This device is designed to provide high-frequency resolution and fast lock times, making it suitable for a variety of high-frequency applications. It features a 25-bit fixed modulus, allowing for subhertz frequency resolution at 6 GHz. The synthesizer includes a low noise digital phase frequency detector (PFD), a precision charge pump, and a programmable reference divider, along with a Σ-Δ based fractional interpolator for programmable fractional-N division.
Key Specifications
| Parameter | Value |
|---|---|
| Frequency Range | 500 MHz to 6 GHz |
| Frequency Resolution | Subhertz at 6 GHz |
| Modulus | 25-bit fixed modulus |
| Supply Voltage | 2.7 V to 3.3 V |
| Operating Temperature | -40°C to 85°C |
| Package Type | 16-TSSOP (0.173", 4.40mm Width) |
| No. of Pins | 16 |
| PLL Type | Frequency Synthesis |
Key Features
- Cycle slip reduction circuitry for faster lock times without the need for modifications to the loop filter.
- Low noise digital phase frequency detector (PFD) and precision charge pump.
- Programmable reference divider and Σ-Δ based fractional interpolator for programmable fractional-N division.
- Control of all on-chip registers via a simple 3-wire interface.
- Double-buffered settings for smooth frequency transitions.
Applications
- Satellite communications terminals.
- Radar equipment.
- Instrumentation equipment.
- Personal mobile radio (PMR) and base stations for mobile radio.
- Wireless handsets.
Q & A
- What is the frequency range of the ADF4157BRUZ? The frequency range is from 500 MHz to 6 GHz.
- What is the frequency resolution of the ADF4157BRUZ at 6 GHz? The frequency resolution is subhertz at 6 GHz.
- What type of package does the ADF4157BRUZ come in? It comes in a 16-TSSOP package.
- What is the supply voltage range for the ADF4157BRUZ? The supply voltage range is from 2.7 V to 3.3 V.
- What are the key components of the ADF4157BRUZ? It includes a low noise digital phase frequency detector (PFD), a precision charge pump, and a programmable reference divider.
- How is the control of on-chip registers achieved in the ADF4157BRUZ? Control of all on-chip registers is via a simple 3-wire interface.
- What is the purpose of the cycle slip reduction circuitry in the ADF4157BRUZ? It reduces cycle slips, leading to faster lock times without the need for modifications to the loop filter.
- What are some of the applications of the ADF4157BRUZ? It is used in satellite communications terminals, radar equipment, instrumentation equipment, personal mobile radio (PMR), base stations for mobile radio, and wireless handsets.
- How does the double-buffering feature work in the ADF4157BRUZ? Double-buffered settings ensure that new values do not take effect until after a new write is performed on Register 0, ensuring smooth frequency transitions.
- What is the operating temperature range of the ADF4157BRUZ? The operating temperature range is from -40°C to 85°C.
