Comprehensive Technical Overview of Texas Instruments 5962-9563301QPA

The Texas Instruments 5962-9563301QPA is a radiation-hardened precision operational amplifier, compliant with MIL-PRF-38535, and designated for space-grade and military applications. This device corresponds to a screened and qualified version of the OP400 quad operational amplifier, manufactured to meet high-reliability requirements under SMD (Standard Microcircuit Drawing) number 5962-95633.

It is engineered for use in systems where long-term performance, radiation tolerance, and electrical stability are mandatory, including spacecraft, satellites, deep-space probes, military avionics, and high-reliability instrumentation systems.

General Description

The 5962-9563301QPA is a quad precision op amp, featuring four independent operational amplifiers in a single package. It is designed with ultra-low offset voltage, low drift, low bias current, and low noise, all critical for precision analog signal processing in space and military environments. It provides both high common-mode rejection and power supply rejection, making it suitable for analog front-end circuitry and sensor interfaces.

Key Features

* Radiation-hardened and screened to MIL-STD-883
* Low offset voltage and offset voltage drift
* Low input bias and offset currents
* High open-loop gain
* Quad op-amp in a hermetically sealed ceramic package
* Qualified per MIL-PRF-38535, QML Class Q

Electrical Characteristics (Typical at 25°C)

* Number of Amplifiers: 4 (quad configuration)
* Supply Voltage Range: ±3 V to ±20 V (dual supply)
* Input Offset Voltage (VOS): 150 µV typical
* Input Bias Current: 1 nA typical
* Input Offset Current: 0.5 nA typical
* Input Voltage Noise: 11 nV/√Hz at 1 kHz
* Open-Loop Gain: >1,000,000 (120 dB)
* Common Mode Rejection Ratio (CMRR): 114 dB typical
* Power Supply Rejection Ratio (PSRR): 120 dB typical
* Slew Rate: 0.3 V/µs
* Gain Bandwidth Product: 1 MHz typical
* Output Voltage Swing: ±13.5 V min (with ±15 V supply)
* Quiescent Current: ~1.2 mA per amplifier

Radiation Performance

While the 5962-9563301QPA is not a "rad-hard-by-design" part, it is typically available with guaranteed radiation test results per lot. These often include:

* Total Ionizing Dose (TID): Up to 100 krad(Si)
* ELDRS Testing: Conducted on space-grade variants
* SEE (Single Event Effects): Characterized to ensure latch-up immunity under heavy ion exposure
* Proton Testing: Often performed for deep-space reliability

Package and Mechanical Characteristics

* Package Type: 14-lead Ceramic Dual In-Line Package (DIP)
* Package Code: PA
* Mounting Style: Through-hole
* Package Material: Ceramic with glass seal (hermetic)
* Weight: Approx. 1 gram
* Operating Temperature Range: –55°C to +125°C
* Lead Finish: Solderable, tin/lead or gold options
* Moisture Sensitivity Level: Not applicable (hermetic)

Pin Configuration (DIP-14)

| Pin | Function |
| --- | -------------------- |
| 1 | Output A |
| 2 | Inverting A |
| 3 | Non-inverting A |
| 4 | V− (GND) |
| 5 | Non-inverting B |
| 6 | Inverting B |
| 7 | Output B |
| 8 | Output C |
| 9 | Inverting C |
| 10 | Non-inverting C |
| 11 | V+ (Positive Supply) |
| 12 | Non-inverting D |
| 13 | Inverting D |
| 14 | Output D |

Typical Applications

* Spaceborne analog signal processing
* Radiation-tolerant sensor interfaces
* Satellite instrumentation and telemetry
* Military avionics and weapons systems
* Precision data acquisition systems
* Guidance and navigation subsystems
* High-reliability operational amplifiers in harsh environments

Design Considerations

* Input Protection: The device is not internally protected against input overvoltage; external protection may be needed.
* Load Driving: The op-amps can drive moderate resistive and capacitive loads, but care should be taken with capacitive loading to avoid stability issues.
* Bypass Capacitors: Local decoupling capacitors near supply pins improve transient response and stability.
* PCB Layout: Symmetrical layout with matched traces helps minimize thermal gradients and parasitic mismatch.

Advantages

* High precision and stability across temperature extremes
* Reliable operation in space and military environments
* Low noise and low drift, critical for sensitive analog circuitry
* Hermetically sealed ceramic package for long-term durability
* MIL-STD compliant for defense and aerospace procurement

Conclusion

The Texas Instruments 5962-9563301QPA is a mission-critical component for analog applications that demand exceptional performance and environmental resilience. With its proven electrical precision, radiation characterization, and compliance with military specifications, it is widely deployed in spaceborne instrumentation and high-reliability military systems. Its quad op-amp architecture provides designers with dense analog integration while meeting the rigorous standards required for aerospace and defense platforms.