Overview
The ADF4118BRU from Analog Devices Inc. is a high-performance RF PLL (Phase-Locked Loop) frequency synthesizer. This component is part of the ADF411x family, which is designed to implement local oscillators (LO) in the upconversion and downconversion sections of wireless receivers and transmitters. The ADF4118BRU is particularly suited for RF and microwave applications, offering a wide frequency range, low phase noise, and fast frequency settling times.
Although the ADF4118BRU is currently obsolete and no longer manufactured, it remains relevant for existing systems and can be replaced with substitutes like the ADF4118BRUZ.
Key Specifications
| Parameter | Description |
|---|---|
| Package | 16-TSSOP (0.173", 4.40mm Width) |
| Supply Voltage | 2.7V to 5.5V |
| Operating Temperature | -40°C to +85°C |
| Maximum Output Frequency | 3 GHz |
| Input Signal Type | CMOS, TTL |
| Output Signal Type | Clock |
| Prescaler Type | Dual-modulus prescaler (32/33) |
| Interface | 3-wire serial interface |
| Phase Noise | -90 dBc/Hz @ 1 kHz offset and 200 kHz PFD frequency (typical at 900 MHz output) |
Key Features
- Wide Frequency Range: The ADF4118BRU operates up to 3 GHz, making it suitable for various RF and microwave applications.
- Low Phase Noise: It offers low phase noise performance, which is critical for maintaining signal quality in RF systems.
- Fast Frequency Settling Time: The device features fastlock mode, enabling quick frequency settling times.
- Dual-Modulus Prescaler: The prescaler supports 32/33 division ratios, enhancing flexibility in frequency synthesis.
- Power-Down Mode: Includes a power-down mode to reduce power consumption when not in use.
- Digital Lock Detect: Provides a digital lock detect feature to indicate when the PLL is locked.
Applications
- Base Stations for Wireless Radio: Supports GSM, PCS, DCS, CDMA, and WCDMA standards.
- Wireless Handsets: Suitable for GSM, PCS, DCS, CDMA, and WCDMA handsets.
- Wireless LANs: Used in wireless local area network applications.
- Communications Test Equipment: Employed in various test and measurement equipment for communications.
- CATV Equipment: Used in cable television (CATV) systems.
Q & A
- What is the maximum output frequency of the ADF4118BRU?
The maximum output frequency of the ADF4118BRU is 3 GHz.
- What are the operating temperature ranges for the ADF4118BRU?
The operating temperature range is -40°C to +85°C.
- What types of input signals does the ADF4118BRU support?
The ADF4118BRU supports CMOS and TTL input signals.
- Does the ADF4118BRU have a power-down mode?
Yes, the ADF4118BRU includes a power-down mode to reduce power consumption when not in use.
- What is the typical phase noise performance of the ADF4118BRU at 900 MHz output?
The typical phase noise performance is -90 dBc/Hz @ 1 kHz offset and 200 kHz PFD frequency.
- What is the package type of the ADF4118BRU?
The package type is 16-TSSOP (0.173", 4.40mm Width).
- Is the ADF4118BRU still in production?
No, the ADF4118BRU is currently obsolete and no longer manufactured.
- What are some common applications of the ADF4118BRU?
Common applications include base stations for wireless radio, wireless handsets, wireless LANs, communications test equipment, and CATV equipment.
- Does the ADF4118BRU support fastlock mode?
Yes, the ADF4118BRU supports fastlock mode for quick frequency settling times.
- What is the supply voltage range for the ADF4118BRU?
The supply voltage range is 2.7V to 5.5V.
