Overview
The MC100EL1648DTG is a 5 V ECL (Emitter-Coupled Logic) Voltage Controlled Oscillator (VCO) amplifier produced by ON Semiconductor. This device is designed to operate within an extended frequency range and is ideal for applications requiring a local oscillator or a fixed frequency clock. It utilizes advanced bipolar process technology and features an on-chip termination emitter resistor, facilitating direct ac-coupling of the output signal into a transmission line. The MC100EL1648DTG is not suitable for use as a crystal oscillator.
Key Specifications
| Parameter | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Operating Frequency | - | - | Up to 1100 | - | MHz |
| Power Supply Current (PECL Mode) | VCC = 5.0 V, VEE = 0 V | 13 | 19 | 25 | mA |
| Power Supply Current (NECL Mode) | VCC = 0 V, VEE = -5.0 V | 13 | 19 | 25 | mA |
| Output HIGH Voltage (PECL Mode) | VCC = 5.0 V, VEE = 0 V | 3950 | 4170 | 4610 | mV |
| Output LOW Voltage (PECL Mode) | VCC = 5.0 V, VEE = 0 V | 3040 | 3410 | 3600 | mV |
| Operating Temperature Range | - | -40 | - | 85 | °C |
| Storage Temperature Range | - | -65 | - | 150 | °C |
Key Features
- Typical operating frequency up to 1100 MHz
- Low power consumption: 19 mA at 5.0 Vdc
- PECL mode operating range: VCC = 4.2 V to 5.5 V with VEE = 0 V
- NECL mode operating range: VCC = 0 V with VEE = -4.2 V to -5.5 V
- On-chip termination emitter resistor for direct ac-coupling
- No external pull-down resistor required for output
- Pb-free devices
- Automatic Gain Control (AGC) for output waveform conditioning
Applications
The MC100EL1648DTG is suitable for various high-speed applications, including:
- Local oscillators in telecommunications and electronic test equipment
- Digital high-speed telecommunications systems
- Fixed frequency clock applications
- Voltage Controlled Oscillator (VCO) applications with varactor diode tuning
Q & A
- What is the typical operating frequency range of the MC100EL1648DTG?
The MC100EL1648DTG can operate up to 1100 MHz.
- What are the power supply requirements for PECL and NECL modes?
For PECL mode, VCC = 4.2 V to 5.5 V with VEE = 0 V. For NECL mode, VCC = 0 V with VEE = -4.2 V to -5.5 V.
- How does the on-chip termination emitter resistor benefit the device?
The on-chip termination emitter resistor facilitates direct ac-coupling of the output signal into a transmission line, eliminating the need for an external pull-down resistor.
- Can the MC100EL1648DTG be used as a crystal oscillator?
No, the MC100EL1648DTG is not suitable for use as a crystal oscillator.
- What is the purpose of the Automatic Gain Control (AGC) in the MC100EL1648DTG?
The AGC is used for output waveform conditioning, allowing the adjustment of the output waveform between sine and square wave forms.
- What are the typical power consumption and operating temperature ranges of the MC100EL1648DTG?
The device typically consumes 19 mA at 5.0 Vdc and operates within a temperature range of -40°C to 85°C.
- How does the varactor diode affect the operation of the MC100EL1648DTG in VCO mode?
The varactor diode allows the VCO to be tuned across the full operating voltage of the power supply by changing the resonant frequency based on the applied voltage.
- What types of packages are available for the MC100EL1648DTG?
The device is available in SOIC-8 and TSSOP-8 packages.
- Is the MC100EL1648DTG Pb-free?
- What are some common applications for the MC100EL1648DTG?
