LTC694CS8-3.3#PBF

Product Overview

Category

The LTC694CS8-3.3#PBF belongs to the category of integrated circuits (ICs).

Use

It is commonly used in electronic devices for signal processing and frequency synthesis applications.

Characteristics

• The LTC694CS8-3.3#PBF is a high-performance, low-noise fractional-N frequency synthesizer.
• It offers excellent phase noise performance and frequency resolution.
• The device operates at a frequency range of 1MHz to 6GHz.
• It provides a wide tuning range and fast settling time.

Package

The LTC694CS8-3.3#PBF comes in an 8-pin SOIC (Small Outline Integrated Circuit) package.

Essence

The essence of the LTC694CS8-3.3#PBF lies in its ability to generate stable and precise frequencies for various applications.

Packaging/Quantity

This product is typically packaged in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Supply Voltage: 2.7V to 5.5V
• Output Frequency Range: 1MHz to 6GHz
• Fractional Spur Rejection: -70dBc
• Phase Noise: -120dBc/Hz @ 100kHz offset
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The LTC694CS8-3.3#PBF has the following pin configuration:

1. VCC: Power supply input
2. GND: Ground reference
3. FOUT: Output frequency
4. N/C: No connection
5. MUXOUT: Multiplexer output
6. LE: Load enable
7. CLKIN: Clock input
8. RFOUT: RF output

Functional Features

• Fractional-N frequency synthesis for precise frequency generation.
• Low phase noise and excellent frequency resolution.
• Wide tuning range and fast settling time.
• Integrated multiplexer for flexible output selection.
• Load enable pin for power-saving operation.

Advantages and Disadvantages

Advantages

• High-performance frequency synthesizer with low phase noise.
• Wide operating frequency range suitable for various applications.
• Compact package size for space-constrained designs.
• Power-saving capability with load enable pin.

Disadvantages

• Limited availability of alternative models from other manufacturers.
• Relatively higher cost compared to some other frequency synthesizers in the market.

Working Principles

The LTC694CS8-3.3#PBF utilizes a fractional-N frequency synthesis technique to generate precise frequencies. It employs a phase-locked loop (PLL) architecture that allows fractional division of the input clock signal. By adjusting the division ratio, the device can achieve fine frequency resolution. The PLL compares the divided output frequency with a reference frequency and generates an error signal to control the voltage-controlled oscillator (VCO). This feedback loop ensures accurate frequency synthesis.

Detailed Application Field Plans

The LTC694CS8-3.3#PBF finds application in various fields, including:

1. Wireless Communication: Used in wireless transceivers, base stations, and satellite communication systems for frequency synthesis and signal processing.
2. Test and Measurement: Employed in spectrum analyzers, signal generators, and frequency counters to generate stable and precise test signals.
3. Radar Systems: Utilized in radar systems for frequency synthesis and local oscillator generation.
4. Medical Devices: Integrated into medical imaging equipment, patient monitoring devices, and diagnostic instruments for accurate frequency generation.

Detailed and Complete Alternative Models

While the LTC694CS8-3.3#PBF is a popular choice, there are alternative models available from different manufacturers. Some notable alternatives include:

1. ADI ADF4351: A high-performance fractional-N synthesizer with a wide frequency range and low phase noise.
2. Maxim MAX2870: An integrated frequency synthesizer with excellent phase noise performance and flexible output options.
3. Texas Instruments LMX2594: A wideband frequency synthesizer with ultra-low phase noise and fast settling time.

These alternative models offer similar functionality and can be considered based on specific application requirements.

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