Overview
The THS4631DGNG4 is a high-speed, FET-input operational amplifier produced by Texas Instruments. It is designed for applications requiring wideband operation, high-input impedance, and high-power supply voltages. The amplifier features a 210-MHz gain bandwidth product, ±15-V supply operation, and a low input bias current of 100 pA, making it capable of simultaneous wideband transimpedance gain and large output signal swing. The fast slew rate of up to 1000 V/µs allows for fast settling times and good harmonic distortion at high frequencies. Low current and voltage noise enable the amplification of extremely low-level input signals while maintaining a large signal-to-noise ratio.
Key Specifications
| Parameter | Value |
|---|---|
| Bandwidth | 325 MHz in Unity Gain |
| Gain Bandwidth Product | 210 MHz |
| Slew Rate | 900 V/µs (G = 2), 1000 V/µs (G = 5) |
| Distortion | –76 dB, SFDR at 5 MHz |
| Maximum Input Bias Current | 100 pA |
| Input Voltage Noise | 7 nV/√Hz |
| Maximum Input Offset Voltage | 500 µV at 25°C |
| Low Offset Drift | 2.5 µV/°C |
| Input Impedance | 10^9 || 3.9 pF |
| Supply Range | ± 5 V to ± 15 V |
| High Output Current | 95 mA |
| Operating Temperature Range | -40 to 85°C |
| Package | 8-TSSOP, 8-MSOP (0.118, 3.00mm Width) Exposed Pad |
Key Features
- High Bandwidth: 325 MHz in Unity Gain and 210 MHz Gain Bandwidth Product
- High Slew Rate: Up to 1000 V/µs
- Low Distortion: –76 dB, SFDR at 5 MHz
- Low Input Bias Current: 100 pA
- Low Input Voltage Noise: 7 nV/√Hz
- Low Offset Drift: 2.5 µV/°C
- High Input Impedance: 10^9 || 3.9 pF
- Wide Supply Range: ± 5 V to ± 15 V
- High Output Current: 95 mA
Applications
- Wideband Photodiode Amplifier: Ideal for transimpedance amplification of photodiode output current.
- Test and Measurement Systems: Requires high-input impedance.
- ADC and DAC Buffering: High-speed integration and active filtering.
- High-Speed Transimpedance Gain Stage: Suitable for systems requiring wideband, low-level signal amplification.
- Optical Monitoring and High-Impedance Buffers: Used in various optical and high-impedance applications.
Q & A
- What is the bandwidth of the THS4631 in unity gain?
The bandwidth of the THS4631 in unity gain is 325 MHz.
- What is the gain bandwidth product of the THS4631?
The gain bandwidth product of the THS4631 is 210 MHz.
- What is the slew rate of the THS4631?
The slew rate of the THS4631 is up to 1000 V/µs (G = 5).
- What is the maximum input bias current of the THS4631?
The maximum input bias current of the THS4631 is 100 pA.
- What is the input voltage noise of the THS4631?
The input voltage noise of the THS4631 is 7 nV/√Hz.
- What is the maximum input offset voltage of the THS4631 at 25°C?
The maximum input offset voltage of the THS4631 at 25°C is 500 µV.
- What is the input impedance of the THS4631?
The input impedance of the THS4631 is 10^9 || 3.9 pF.
- What is the supply range of the THS4631?
The supply range of the THS4631 is ± 5 V to ± 15 V.
- What is the high output current capability of the THS4631?
The high output current capability of the THS4631 is 95 mA.
- What are some typical applications of the THS4631?
Typical applications include wideband photodiode amplifiers, test and measurement systems, ADC and DAC buffering, high-speed integration, and active filtering.
