Overview
The MC12026ADR2, 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.
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 (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 | VCC + 0.5 | V | |
| Divide Ratio Control Input Low (SW) | VIL2 | OPEN | |||
| Output Voltage Swing (RL = 560 Ω, IO = 5.5 mA) | Vout | 1.0 | 1.6 | Vpp | |
| Modulus Setup Time (MC to Out) | tSET | 6.0 | 9.0 | ns |
Key Features
- High frequency operation up to 1.1 GHz
- Low voltage operation: 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: 6.0 ns typical at 1.1 GHz
- Modulus control input level compatible with standard CMOS and TTL
- Pb-free, halogen-free, and RoHS compliant
Applications
The MC12026ADR2 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
- Radio frequency (RF) synthesizers
- Telecommunication equipment
- High-speed data transmission systems
Q & A
- What is the maximum operating frequency of the MC12026ADR2?
The MC12026ADR2 can operate up to a frequency of 1.1 GHz.
- What is the supply voltage range for the MC12026ADR2?
The supply voltage range is from 4.5 V to 5.5 V.
- What is the typical supply current of the MC12026ADR2?
The typical supply current is 4.0 mA.
- What is the operating temperature range of the MC12026ADR2?
The operating temperature range is from -40°C to 85°C.
- Is the MC12026ADR2 compatible with other components?
Yes, it is pin compatible with the MC12022.
- What is the modulus setup time of the MC12026ADR2?
The modulus setup time is typically 6.0 ns at 1.1 GHz.
- What are the divide ratios available for the MC12026ADR2?
The available divide ratios are 8/9 and 16/17, controlled by the Divide Ratio Control (SW) and Modulus Control (MC) inputs.
- Is the MC12026ADR2 RoHS compliant?
Yes, the MC12026ADR2 is Pb-free, halogen-free, and RoHS compliant.
- What are common applications for the MC12026ADR2?
Common applications include wireless communication systems, RF synthesizers, telecommunication equipment, and high-speed data transmission systems.
- How do I select the divide ratio for the MC12026ADR2?
The divide ratio is selected using the Divide Ratio Control (SW) and Modulus Control (MC) inputs. Refer to the functional table in the datasheet for specific configurations.
