Overview
The ADF4154BRU from Analog Devices Inc. is a fractional-N frequency synthesizer designed for use in various wireless communication systems. It is particularly suited for implementing local oscillators in the up-conversion and down-conversion sections of wireless receivers and transmitters. The device features a low noise digital phase frequency detector (PFD), a precision charge pump, and a programmable reference divider. It also includes a Σ-Δ based fractional interpolator, allowing for programmable fractional-N division. The ADF4154BRU operates with a power supply ranging from 2.7 V to 3.3 V and can be powered down when not in use, making it energy-efficient.
Key Specifications
| Attribute | Value |
|---|---|
| Manufacturer | Analog Devices, Inc. |
| Type | Fractional N Synthesizer (RF) |
| Voltage - Supply | 2.7V ~ 3.3V |
| Package / Case | 16-TSSOP (0.173", 4.40mm Width) |
| Operating Temperature | -40°C ~ 85°C |
| Input | CMOS, TTL |
| Output | Clock |
| Frequency - Max | 4GHz |
| PLL | Yes |
| Mounting Type | Surface Mount |
| Number of Circuits | 1 |
Key Features
- 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.
- Fast-lock mode with built-in timer for controlled wide bandwidth mode.
- Control via a simple 3-wire interface.
- Power-down mode for energy efficiency.
- Support for external loop filter and voltage-controlled oscillator (VCO) to implement a complete phase-locked loop (PLL).
Applications
- Base stations for mobile radio (WiMAX, PHS, GSM, PCS, DCS, CDMA, PMR, W-CDMA, supercell 3G).
- Wireless handsets (PMR, GSM, PCS, DCS, CDMA, WCDMA).
- CATV equipment.
- Wireless LANs.
- Communications test equipment.
Q & A
- What is the ADF4154BRU used for? The ADF4154BRU is used as a fractional-N frequency synthesizer in wireless communication systems, particularly for implementing local oscillators in receivers and transmitters.
- What is the operating voltage range of the ADF4154BRU? The operating voltage range is 2.7 V to 3.3 V.
- What is the maximum operating frequency of the ADF4154BRU? The maximum operating frequency is 4 GHz.
- Does the ADF4154BRU support power-down mode? Yes, the device can be powered down when not in use for energy efficiency.
- How is the ADF4154BRU controlled? The device is controlled via a simple 3-wire interface.
- What are the key features of the ADF4154BRU's fast-lock mode? The fast-lock mode includes a built-in timer that allows the PLL to remain in wide bandwidth mode for a predetermined countdown time.
- What types of applications is the ADF4154BRU suitable for? It is suitable for base stations, wireless handsets, CATV equipment, wireless LANs, and communications test equipment.
- What is the package type of the ADF4154BRU? The package type is 16-TSSOP (0.173", 4.40mm Width).
- What is the operating temperature range of the ADF4154BRU? The operating temperature range is -40°C to 85°C.
- Does the ADF4154BRU support external loop filter and VCO? Yes, it supports the use of an external loop filter and VCO to implement a complete PLL.
