DS1087LU-21H+T&R

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Clock Generator
• Characteristics:
  • Low power consumption
  • Wide frequency range
  • High accuracy
• Package: T&R (Tape and Reel)
• Essence: Programmable clock generator
• Packaging/Quantity: 1000 units per reel

Specifications and Parameters

• Frequency Range: 1Hz to 200MHz
• Supply Voltage: 2.7V to 5.5V
• Operating Temperature: -40°C to +85°C
• Output Types: CMOS, LVCMOS, LVPECL, LVDS
• Programmable Features: Frequency, Spread Spectrum, Output Format

Detailed Pin Configuration

1. VDD: Power supply
2. GND: Ground
3. XIN: Crystal oscillator input
4. XOUT: Crystal oscillator output
5. CLKOUT: Clock output
6. SDA: Serial data input/output
7. SCL: Serial clock input
8. OE: Output enable
9. PLL_EN: PLL enable
10. REF_SEL: Reference clock select
11. FS0-FS2: Frequency select
12. SS_EN: Spread spectrum enable
13. SS_AMPL: Spread spectrum amplitude control
14. SS_RATE: Spread spectrum rate control

Functional Characteristics

• Programmable frequency selection
• Spread spectrum modulation capability
• Multiple output formats supported
• Low jitter and phase noise
• Easy integration with other ICs

Advantages and Disadvantages

Advantages

• Wide frequency range allows for versatile applications
• Low power consumption for energy-efficient designs
• Programmable features provide flexibility
• High accuracy ensures reliable timing signals

Disadvantages

• Limited number of output types available
• Requires external crystal oscillator for operation

Applicable Range of Products

• Communication systems
• Consumer electronics
• Industrial automation
• Medical devices
• Automotive applications

Working Principles

The DS1087LU-21H+T&R is a programmable clock generator IC that utilizes an external crystal oscillator to generate precise timing signals. It features a phase-locked loop (PLL) that allows for frequency multiplication and division, enabling the generation of various output frequencies. The device can be programmed through the serial interface to select the desired frequency, spread spectrum modulation, and output format.

Detailed Application Field Plans

1. Communication Systems: Use the DS1087LU-21H+T&R to generate clock signals for data transmission and synchronization in wireless communication systems.
2. Consumer Electronics: Incorporate the IC into audio/video equipment, gaming consoles, and digital cameras to ensure accurate timing for signal processing and data transfer.
3. Industrial Automation: Utilize the device in industrial control systems, PLCs, and robotics to synchronize operations and enable precise timing in manufacturing processes.
4. Medical Devices: Integrate the IC into medical imaging equipment, patient monitoring systems, and diagnostic instruments to maintain accurate timing for data acquisition and synchronization.
5. Automotive Applications: Employ the DS1087LU-21H+T&R in automotive electronics, such as infotainment systems and advanced driver-assistance systems (ADAS), to provide reliable timing signals for various functions.

Detailed Alternative Models

• DS1086LU-21H+T&R: Similar clock generator IC with a different frequency range (1Hz to 100MHz).
• DS1088LU-21H+T&R: Clock generator IC with additional features like frequency multiplication and division ratios.

5 Common Technical Questions and Answers

1. Q: What is the maximum frequency that can be generated by the DS1087LU-21H+T&R? A: The DS1087LU-21H+T&R can generate frequencies up to 200MHz.

2. Q: Can the DS1087LU-21H+T&R operate with a supply voltage below 2.7V? A: No, the DS1087LU-21H+T&R requires a supply voltage between 2.7V and 5.5V for proper operation.

3. Q: Does the DS1087LU-21H+T&R support spread spectrum modulation? A: Yes, the DS1087LU-21H+T&R has built-in spread spectrum modulation capability.

4. Q: How many output formats are supported by the DS1087LU-21H+T&R? A: The DS1087LU-21H+T&R supports CMOS, LVCMOS, LVPECL, and LVDS output types.

5. Q: Is an external crystal oscillator required for the DS1087LU-21H+T&R to function? A: Yes, the DS1087LU-21H+T&R relies