Overview
The AD9901KPZ is a high-performance digital phase/frequency discriminator produced by Analog Devices Inc. This component is designed to directly compare phase/frequency inputs up to 200 MHz, making it ideal for various high-speed applications. The AD9901KPZ operates on a single +5 V supply and can be configured to work with TTL, CMOS, or ECL logic levels, and it also supports ECL inputs with a –5.2 V supply. The device features a linear detection range without indeterminate phase detection zones, ensuring accurate and reliable phase and frequency detection.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Positive Supply Voltage (+VS for TTL Operation) | +7 | V | ||
| Negative Supply Voltage (–VS for ECL Operation) | –7 | V | ||
| Input Voltage Range (TTL Operation) | 0 | +5.5 | V | |
| Differential Input Voltage (ECL Operation) | 4.0 | V | ||
| ISET Current | 12 | mA | ||
| Output Current | 30 | mA | ||
| TTL Input Logic “1” Voltage | 2.0 | V | ||
| TTL Input Logic “0” Voltage | 0.8 | V | ||
| ECL Differential Switching Voltage | 300 | mV | ||
| Peak-to-Peak Output Voltage Swing | 1.6 | 1.8 | 2.0 | V |
| Operating Temperature | 0 | +70 | °C | |
| Package | 20-LCC (J-Lead) |
Key Features
- Phase and Frequency Detection
- ECL/TTL/CMOS Compatible
- Linear Transfer Function
- No “Dead Zone”
- MIL-STD-883 Compliant Versions Available
- Open-Collector Outputs
- Simple Current Setting Resistor for Output Stage Current Control
Applications
- Low Phase Noise Reference Loops
- Fast-Tuning “Agile” IF Loops
- Secure “Hopping” Communications
- Coherent Radar Transmitter/Receiver Chains
Q & A
- What is the maximum frequency that the AD9901KPZ can handle?
The AD9901KPZ can handle phase/frequency inputs up to 200 MHz.
- What are the supported logic levels for the AD9901KPZ?
The AD9901KPZ supports TTL, CMOS, and ECL logic levels.
- What is the operating supply voltage for TTL operation?
The operating supply voltage for TTL operation is +5 V, with a maximum of +7 V.
- What is the significance of the linear transfer function in the AD9901KPZ?
The linear transfer function ensures accurate phase and frequency detection without indeterminate phase detection zones.
- What are the key applications of the AD9901KPZ?
The AD9901KPZ is used in low phase noise reference loops, fast-tuning “agile” IF loops, secure “hopping” communications, and coherent radar transmitter/receiver chains.
- How does the AD9901KPZ handle frequency differences between inputs?
If the two inputs are substantially different in frequency, the frequency discrimination circuit overrides the phase detector portion to drive the oscillator frequency toward the reference frequency.
- What is the package type of the AD9901KPZ?
The AD9901KPZ is packaged in a 20-LCC (J-Lead) package.
- What are the operating temperature ranges for the AD9901KPZ?
The commercial versions operate from 0°C to +70°C, and military versions operate from –55°C to +125°C.
- How does the AD9901KPZ manage power consumption at lower frequencies?
A simple current setting resistor controls the output stage current range, allowing for a reduction in power when operated at lower frequencies.
- Is the AD9901KPZ compliant with any military standards?
Yes, the AD9901KPZ has versions that are MIL-STD-883 compliant.
