Overview
The LMX2541SQ3030E/NOPB is an ultra-low noise PLLatinum frequency synthesizer produced by Texas Instruments. This device integrates a high-performance delta-sigma fractional N PLL, a VCO with a fully integrated tank circuit, and an optional frequency divider. It is designed to generate very stable and ultra-low noise signals, making it suitable for a variety of high-frequency applications. The LMX2541 is fabricated in a proprietary BiCMOS process and is available in a 36-pin WQFN (NJK) package with dimensions of 6-mm × 6-mm × 0.8-mm.
Key Specifications
| Specification | Value |
|---|---|
| Package | WQFN (NJK) with 36 pins |
| Operating Temperature Range (°C) | -40 to 85 |
| Supply Voltage Range (V) | 3.15 to 3.45 |
| Maximum Supply Voltage (V) | 3.45 |
| Frequency Range | 31.6 MHz to 4000 MHz |
| Normalized PLL Phase Noise (dBc/Hz) | -225 |
| Phase Detector Frequency (MHz) | Up to 104 |
| VCO Frequency Divider Range | 1 to 63 |
| Logic Compatibility | 1.6-V logic |
Key Features
- Multiple frequency options available with frequencies from 31.6 MHz to 4000 MHz
- Very low RMS noise and spurs
- Ultra-low noise integrated VCO with optional external VCO configuration
- Programmable output power and charge pump output
- Partially integrated loop filter and digital frequency shift keying (FSK) modulation pin
- Integrated reference crystal oscillator circuit and low-noise LDOs
- Hardware and software power down, FastLock mode, and VCO-based cycle slip reduction
- Analog and digital lock detect
- Three-wire MICROWIRE interface for device programming
Applications
The LMX2541SQ3030E/NOPB is suitable for various high-frequency applications requiring ultra-low noise and high stability. These include:
- Wireless communication systems
- Radar and military communication systems
- Test and measurement equipment
- Base stations and cellular infrastructure
- High-performance instrumentation and medical devices
Q & A
- What is the LMX2541SQ3030E/NOPB?
The LMX2541SQ3030E/NOPB is an ultra-low noise PLLatinum frequency synthesizer produced by Texas Instruments.
- What is the frequency range of the LMX2541?
The frequency range of the LMX2541 is from 31.6 MHz to 4000 MHz.
- What is the normalized PLL phase noise of the LMX2541?
The normalized PLL phase noise is -225 dBc/Hz.
- What is the maximum phase detector frequency of the LMX2541?
The maximum phase detector frequency is up to 104 MHz.
- Does the LMX2541 support external VCO configuration?
- What is the supply voltage range of the LMX2541?
The supply voltage range is from 3.15 V to 3.45 V.
- What is the operating temperature range of the LMX2541?
The operating temperature range is from -40°C to 85°C.
- What type of logic compatibility does the LMX2541 have?
The LMX2541 has 1.6-V logic compatibility.
- Does the LMX2541 have integrated low-noise LDOs?
- What interface is used for device programming?
The device programming is facilitated using a three-wire MICROWIRE interface.
