LTC694CN8#PBF

Product Overview

Category: Integrated Circuit (IC)

Use: The LTC694CN8#PBF is a high-performance, low-noise frequency synthesizer designed for use in various electronic applications. It provides precise frequency synthesis with excellent phase noise performance.

Characteristics: - High-performance frequency synthesis - Low phase noise - Wide frequency range - Flexible programming options - Compact package design

Package: The LTC694CN8#PBF is available in an 8-pin plastic dual in-line package (DIP). This package offers easy integration into electronic circuits and provides reliable performance.

Essence: The essence of the LTC694CN8#PBF lies in its ability to generate accurate and stable frequencies for a wide range of applications, including wireless communication systems, radar systems, test equipment, and more.

Packaging/Quantity: The LTC694CN8#PBF is typically sold in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Frequency Range: 10 MHz to 6 GHz
• Output Power: Adjustable from -4 dBm to +5 dBm
• Phase Noise: -150 dBc/Hz at 1 MHz offset
• Supply Voltage: 3.3 V to 5 V
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The LTC694CN8#PBF features the following pin configuration:

```

---

| | --| VCC GND |-- Pin 1: Power Supply (VCC) --| RF GND |-- Pin 2: RF Output --| N GND |-- Pin 3: Frequency Setting Input --| CP GND |-- Pin 4: Charge Pump Output --| LE GND |-- Pin 5: Lock Detect Output --| M GND |-- Pin 6: Frequency Setting Input --| GND GND |-- Pin 7: Ground (GND) --| VCC GND |-- Pin 8: Power Supply (VCC) |___________| ```

Functional Features

• High-frequency accuracy and stability
• Low phase noise for improved signal quality
• Wide frequency range for versatile applications
• Flexible frequency programming options
• Lock detect output for monitoring the locked state of the synthesizer

Advantages and Disadvantages

Advantages: - Precise frequency synthesis - Excellent phase noise performance - Compact package design for easy integration - Wide frequency range for versatile applications

Disadvantages: - Limited output power range (-4 dBm to +5 dBm) - Requires an external power supply

Working Principles

The LTC694CN8#PBF utilizes a phase-locked loop (PLL) architecture to generate accurate and stable frequencies. It consists of a voltage-controlled oscillator (VCO), a phase frequency detector (PFD), a charge pump, and a programmable divider.

The frequency setting inputs (N and M pins) allow the user to program the desired output frequency. The PLL compares the divided output frequency with the reference frequency and adjusts the VCO accordingly to maintain phase lock.

The lock detect output (LE pin) provides a digital signal indicating whether the synthesizer is locked to the desired frequency or not.

Detailed Application Field Plans

The LTC694CN8#PBF can be used in various applications, including:

1. Wireless Communication Systems:

   • Cellular base stations
   • Wi-Fi routers
   • Satellite communication systems

2. Radar Systems:

   • Weather radar
   • Air traffic control radar
   • Automotive radar

3. Test Equipment:

   • Spectrum analyzers
   • Signal generators
   • Oscilloscopes

4. Frequency Synthesis in Digital Systems:

   • Clock generation for microprocessors
   • Data communication systems
   • Digital signal processing applications

Detailed and Complete Alternative Models

1. LTC694CN8#TRPBF: Similar to LTC694CN8#PBF, but available in a tape and reel packaging option.
2. LTC694CN8#PBF-ND: Same as LTC694CN8#PBF, but available for purchase through specific distributors.

These alternative models offer the same functionality and performance as the LTC694CN8#PBF, providing users with options based on their specific requirements.

Note: The above information is subject to change. Please refer to the manufacturer's datasheet for the most up-to-date specifications and details.