Overview
The MC12026A, produced by onsemi, is a high-frequency, low-voltage dual modulus prescaler designed for use in phase-locked loop (PLL) applications. This component is particularly useful in CMOS synthesizers that require positive edges to trigger internal counters, enabling tuning signals up to 1.1 GHz in programmable frequency steps.
The MC12026A offers flexibility with its Divide Ratio Control (SW) and Modulus Control (MC) inputs, allowing the selection of divide ratios such as 8/9 or 16/17. It is also pin-compatible with the MC12022, making it a versatile option for various design needs.
Key Specifications
| Characteristic | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Toggle Frequency (Sin Wave) | ft | 0.1 | 1.4 | 1.1 | GHz |
| Supply Voltage | VCC | 4.5 | 5.5 | V | |
| Supply Current Output Unloaded | ICC | 4.0 | 5.3 | mA | |
| Operating Temperature Range | TA | -40 | 85 | °C | |
| Modulus Control Input High (MC) | VIH1 | 2.0 | VCC | V | |
| Modulus Control Input Low (MC) | VIL1 | GND | 0.8 | V | |
| Divide Ratio Control Input High (SW) | VIH2 | VCC - 0.5 V | VCC + 0.5 V | V | |
| Modulus Setup Time MC to Out | tSET | 6.0 | 9.0 | ns |
Key Features
- 1.1 GHz Toggle Frequency
- Supply Voltage: 4.5 to 5.5 V
- Low Power Consumption: 4.0 mA Typical
- Operating Temperature Range: -40 to 85°C
- Pin Compatible with the MC12022
- Short Setup Time (tset): 6.0 ns Typical @ 1.1 GHz
- Modulus Control Input Level Compatible with Standard CMOS and TTL
- Pb-Free, Halogen Free, and RoHS Compliant
Applications
The MC12026A is primarily used in phase-locked loop (PLL) applications, particularly in CMOS synthesizers. It is suitable for systems requiring high-frequency signal processing and precise frequency division. Common applications include:
- Wireless communication systems
- RF and microwave circuits
- Frequency synthesizers
- High-speed data transmission systems
Q & A
- What is the maximum toggle frequency of the MC12026A?
The maximum toggle frequency of the MC12026A is 1.1 GHz.
- What are the possible divide ratios for the MC12026A?
The MC12026A can be set to divide ratios of 8/9 or 16/17 using the Divide Ratio Control (SW) and Modulus Control (MC) inputs.
- What is the operating temperature range of the MC12026A?
The operating temperature range of the MC12026A is -40 to 85°C.
- Is the MC12026A compatible with standard CMOS and TTL logic levels?
- What is the typical supply current of the MC12026A?
The typical supply current of the MC12026A is 4.0 mA.
- Is the MC12026A Pb-Free and RoHS Compliant?
- What is the setup time for the modulus control input to output?
The modulus setup time (tSET) is typically 6.0 ns.
- Can the MC12026A be used in high-speed data transmission systems?
- Is the MC12026A pin-compatible with other models?
- What are the common applications of the MC12026A?
