Overview
The ADF4218LBRUZ is a dual low power frequency synthesizer produced by Analog Devices Inc. This integrated circuit is designed to implement local oscillators in the up-conversion and down-conversion sections of wireless receivers and transmitters. It features a low noise digital phase frequency detector (PFD), a precision charge pump, programmable reference dividers, and programmable A and B counters, along with a dual modulus prescaler. This configuration allows for the implementation of an N divider, making it highly versatile for various frequency synthesis applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Voltage - Supply | 2.6V ~ 3.3V | V |
| Frequency - Max | 3GHz | Hz |
| Package / Case | 20-TSSOP (0.173", 4.40mm Width) | |
| Operating Temperature | -40°C ~ 85°C | °C |
| Input Type | CMOS, TTL | |
| PLL | Yes | |
| Output | Clock | |
| Mounting Type | Surface Mount | |
| Reference Input Frequency | Up to 250 MHz | Hz |
| PFD Frequency | Up to 200 kHz | Hz |
Key Features
- Low noise digital phase frequency detector (PFD) and precision charge pump.
- Programmable reference dividers and A and B counters.
- Dual modulus prescaler (P/P + 1) for implementing an N divider.
- Low power consumption suitable for battery-powered devices.
- 3-wire serial interface for easy programming.
- Power-down mode for further power savings.
- Charge pump current matching of 1%.
Applications
- Wireless handsets (GSM, PCS, DCS, CDMA, WCDMA).
- Base stations for wireless radio (GSM, PCS, DCS, WCDMA).
- Wireless LANs.
- Communications test equipment.
- Cable TV tuners (CATV).
Q & A
- What is the ADF4218LBRUZ used for? The ADF4218LBRUZ is used to implement local oscillators in wireless receivers and transmitters, particularly in frequency synthesis applications.
- What is the maximum frequency supported by the ADF4218LBRUZ? The maximum frequency supported is 3 GHz.
- What is the supply voltage range for the ADF4218LBRUZ? The supply voltage range is 2.6V to 3.3V.
- What type of package does the ADF4218LBRUZ come in? It comes in a 20-TSSOP package.
- What are the operating temperature limits for the ADF4218LBRUZ? The operating temperature range is -40°C to 85°C.
- Does the ADF4218LBRUZ support power-down mode? Yes, it supports power-down mode for power savings.
- What types of inputs does the ADF4218LBRUZ support? It supports CMOS and TTL inputs.
- What is the purpose of the dual modulus prescaler in the ADF4218LBRUZ? The dual modulus prescaler is used in conjunction with the A and B counters to implement an N divider.
- What are some common applications of the ADF4218LBRUZ? Common applications include wireless handsets, base stations, wireless LANs, communications test equipment, and cable TV tuners.
- How is the ADF4218LBRUZ programmed? It is programmed using a 3-wire serial interface.
