Overview
The MC100EL1648DR2G is a 5 V ECL (Emitter-Coupled Logic) Voltage Controlled Oscillator (VCO) Amplifier produced by onsemi. This device is designed to operate within a wide frequency range and is ideal for applications requiring a local oscillator or a fixed frequency clock. It utilizes advanced bipolar process technology, enabling it to operate at extended frequency ranges. The MC100EL1648 requires an external parallel tank circuit consisting of an inductor (L) and capacitor (C), and optionally a varactor diode for voltage-controlled tuning.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Typical Operating Frequency | Up to 1100 | MHz |
| Power Supply Voltage (PECL Mode) | 4.2 to 5.5 | V |
| Power Supply Voltage (NECL Mode) | −4.2 to −5.5 | V |
| Input Capacitance | 6.0 | pF (Typ) |
| Operating Temperature Range | −40 to +85 | °C |
| Storage Temperature Range | −65 to +150 | °C |
| Thermal Resistance (Junction-to-Ambient) - SOIC-8 | 190 / 130 | °C/W (0 lfpm / 500 lfpm) |
| Thermal Resistance (Junction-to-Case) - SOIC-8 | 41 to 44 | °C/W |
| Output Current Continuous / Surge | 50 / 100 | mA |
Key Features
- Advanced bipolar process technology for extended frequency range operation.
- On-chip termination emitter resistor (RE) with a nominal value of 510 Ω, facilitating direct ac-coupling of the output signal into a transmission line.
- No external pull-down resistor required for the output.
- Low power consumption: 19 mA at 5.0 Vdc.
- Support for both PECL and NECL modes.
- Pb-free devices.
- External tank circuit configurable for fixed frequency or voltage-controlled operation using a varactor diode.
Applications
- Local oscillators in various electronic systems.
- Electronic test equipment.
- Digital high-speed telecommunications.
- Systems requiring a fixed frequency clock.
Q & A
- What is the typical operating frequency range of the MC100EL1648DR2G?
The MC100EL1648DR2G can operate up to 1100 MHz.
- What are the power supply voltage ranges for PECL and NECL modes?
For PECL mode, the voltage range is 4.2 V to 5.5 V. For NECL mode, the voltage range is −4.2 V to −5.5 V.
- What is the input capacitance of the MC100EL1648DR2G?
The input capacitance is typically 6.0 pF.
- What is the operating temperature range of the device?
The operating temperature range is −40°C to +85°C.
- Does the MC100EL1648DR2G require an external pull-down resistor for the output?
No, the device does not require an external pull-down resistor due to its on-chip termination emitter resistor.
- How is the output signal configured in the MC100EL1648DR2G?
The output signal is configured for direct ac-coupling into a transmission line with an on-chip termination emitter resistor.
- Can the MC100EL1648DR2G be used as a crystal oscillator?
No, the MC100EL1648DR2G is not usable as a crystal oscillator.
- What types of packages are available for the MC100EL1648DR2G?
The device is available in SOIC-8 and TSSOP-8 packages.
- How can the tank circuit be configured for voltage-controlled operation?
The tank circuit can be configured with a varactor diode to allow voltage-controlled tuning of the oscillator frequency.
- What are some common applications of the MC100EL1648DR2G?
Common applications include local oscillators, electronic test equipment, and digital high-speed telecommunications.
