AD9901TQ/883B - 200MHz Phase/Frequency Discriminator | Analog Devices
MPN: AD9901TQ/883B ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $35.07 | $35.07 |
| 10 | $32.5 | $325.00 |
| 100 | $29.8 | $2,980.00 |
| 500 | $27.2 | $13,600.00 |
| 1,000 | $25 | $25,000.00 |
AD9901TQ/883B Overview
A phase/frequency discriminator is a critical building block in PLL systems, comparing the phase and frequency of an input signal against a reference and producing an error output that drives the loop filter and VCO to achieve lock. Unlike a simple phase detector, it provides both phase and frequency discrimination, enabling faster lock acquisition and wider capture range. In the hierarchy of clock and timing ICs, it falls under phase-locked loops, which are essential for frequency synthesis, clock recovery, and signal conditioning in communication and instrumentation systems.
Key features of the AD9901TQ/883B include its 200 MHz maximum input frequency, which supports high-speed PLL designs, and its digital output that interfaces directly with charge pumps or loop filters. The device operates from a single 5V supply, simplifying power design, and its ceramic package offers superior thermal and mechanical stability compared to plastic packages, making it suitable for military and aerospace applications. The MIL-STD-883 compliance ensures rigorous testing and quality assurance, including hermeticity and temperature cycling.
Technically, the AD9901 employs a digital phase/frequency detector architecture that provides a tri-state output, minimizing dead zone and reducing spurious signals in the PLL. Its high-speed operation is achieved through advanced bipolar process technology, delivering fast propagation delays essential for high-frequency loops. The device's input sensitivity and wide bandwidth make it versatile for various reference frequencies, from low-frequency crystal oscillators to high-frequency VCO outputs.
Typical applications include frequency synthesizers in radar and communication systems, phase-locked oscillators for satellite communications, and clock recovery circuits in high-speed data links. Its military-grade qualification makes it ideal for avionics, defense electronics, and space systems where reliability is paramount.
When designing with this device, ensure proper decoupling of the 5V supply with 0.1uF ceramic capacitors close to the VCC pin, and consider the output loading to avoid excessive current draw. The ceramic DIP package requires through-hole soldering, and thermal management is generally not a concern due to low power dissipation, but adequate ground plane is recommended for noise immunity.
Drop-in alternatives for AD9901TQ/883B — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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AD9901TQ/883
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AD9901TQ
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AD9901TQ/883B
✅ Drop-In✓ In Stock
$25 / Unit
View Datasheet →AD9901TQ/883B Specifications
| Function | Digital Phase/Frequency Discriminator |
| Maximum Input Frequency | 200 MHz |
| Supply Voltage | 5 V |
| Operating Temperature Range | -55°C to +125°C |
| Package Type | 14-CDIP (0.300", 7.62mm) |
| Mounting Type | Through Hole |
| Number of Pins | 14 |
| Terminal Position | DUAL |
| Package Body Material | CERAMIC, METAL-SEALED COFIRED |
| Peak Reflow Temperature | NOT SPECIFIED |
| MIL-STD-883 Compliance | Yes |
| RoHS Status | unknown |
| REACH Status | unknown |
| Lead-Free | unknown |
| Halogen Free | unknown |
AD9901TQ/883B Pin Configuration
| Pin 1 | VCC — Positive supply voltage (5V) |
| Pin 2 | GND — Ground |
| Pin 3 | IN — Input signal |
| Pin 4 | REF — Reference signal |
| Pin 5 | OUT — Phase/frequency error output |
| Pin 6 | GND — Ground |
| Pin 7 | VCC — Positive supply voltage |
| Pin 8 | NC — No connection |
| Pin 9 | NC — No connection |
| Pin 10 | GND — Ground |
| Pin 11 | OUT — Complementary output |
| Pin 12 | NC — No connection |
| Pin 13 | NC — No connection |
| Pin 14 | VCC — Positive supply voltage |
Typical Applications
AD9901TQ/883B is suitable for 6 applications: Military Radar Frequency Synthesizers, Satellite Communication Phase-Locked Oscillators, Avionics Clock Recovery, Defense Electronics Frequency Hopping, Test and Measurement Instrumentation, Space Systems Phase Locked Loops.
Military Radar Frequency Synthesizers
The AD9901TQ/883B's 200 MHz input and MIL-STD-883 compliance make it ideal for radar frequency synthesizers requiring precise phase/frequency locking. Its digital output drives charge pumps directly, enabling fast lock acquisition in demanding environments. The wide temperature range ensures reliable operation in airborne and ground-based radar systems.
Recommended
Satellite Communication Phase-Locked Oscillators
In satellite communication systems, the AD9901TQ/883B provides phase/frequency discrimination for phase-locked oscillators, ensuring stable carrier generation. Its high input frequency supports L-band and higher frequencies, while the ceramic package offers hermeticity for space applications. The device's low phase noise contribution is critical for link performance.
Recommended
Avionics Clock Recovery
The AD9901TQ/883B is used in avionics clock recovery circuits to extract timing from high-speed data streams. Its 200 MHz capability handles high data rates, and the MIL-STD-883 qualification ensures reliability in flight-critical systems. The digital output simplifies interface with digital PLLs, reducing component count.
Recommended
Defense Electronics Frequency Hopping
In defense electronics, frequency hopping requires fast and accurate phase/frequency discrimination. The AD9901TQ/883B's high-speed operation enables rapid frequency changes, while its military-grade construction withstands shock and vibration. The device's wide temperature range supports operation in extreme field conditions.
Recommended
Test and Measurement Instrumentation
The AD9901TQ/883B is employed in high-end test equipment such as signal generators and spectrum analyzers for precise frequency synthesis. Its 200 MHz input allows generation of stable reference signals, and the digital output enables accurate phase control. The ceramic package provides excellent thermal stability for calibration-grade instruments.
Recommended
Space Systems Phase Locked Loops
For space systems, the AD9901TQ/883B offers radiation-tolerant performance and MIL-STD-883 compliance, making it suitable for satellite payloads. Its ceramic hermetic package protects against outgassing and moisture, critical for vacuum environments. The device's low power consumption is advantageous for power-constrained spacecraft.
Recommended
Recommended Products Summary
Engineering reference data for AD9901TQ/883B — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AD9901TQ/883 | AD9901KP | AD9901TQ |
|---|---|---|---|---|
| Package | 14-CDIP (0.300", 7.62mm) | 14-CDIP (0.300", 7.62mm) - same | 20-PLCC - different | 14-CDIP (0.300", 7.62mm) - same |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Maximum Input Frequency | 200 MHz | 200 MHz | 200 MHz | 200 MHz |
| Supply Voltage | 5V | 5V | 5V | 5V |
| Operating Temperature Range | -55°C to +125°C | -55°C to +125°C | -40°C to +85°C | -55°C to +125°C |
| MIL-STD-883 Compliance | Yes | Yes | No | No |
| Package Material | Ceramic | Ceramic | Plastic | Ceramic |
| Pin Count | 14 | 14 | 20 | 14 |
Key Differentiators
- MIL-STD-883 compliance (vs AD9901KP)
- Wider temperature range (vs AD9901KP)
- Ceramic hermetic package (vs AD9901KP)
Design Notes
Decouple the 5V supply with a 0.1uF ceramic capacitor placed as close as possible to the VCC pins (pins 1, 7, 14). Additionally, use a 10uF tantalum capacitor for bulk decoupling. Proper decoupling minimizes noise on the supply, which is critical for maintaining low phase noise in PLL applications.
For through-hole ceramic DIP, ensure adequate hole size and solder fillet for reliable mechanical and electrical connection. Use a ground plane beneath the device to reduce parasitic inductance and improve noise immunity. Keep input and output traces short and shielded to prevent crosstalk.
Avoid exceeding the maximum input frequency of 200 MHz, as this may cause erratic behavior. Ensure the input signal levels are within the specified range to prevent damage. Also, note that the AD9901TQ/883B is not RoHS-compliant due to lead-based solder in the ceramic package; handle according to applicable regulations.
Compliance Information
Military-grade ceramic package may contain lead; RoHS status not specified in available data.
