Overview
The THS4631DGNR is a high-speed, FET-input operational amplifier designed by Texas Instruments. This amplifier is tailored for applications that require wideband operation, high-input impedance, and high-power supply voltages. It offers a 210-MHz gain bandwidth product, ±15-V supply operation, and a low input bias current of 100 pA, making it suitable for simultaneous wideband transimpedance gain and large output signal swing. The fast slew rate of 1000 V/µs enables fast settling times and good harmonic distortion at high frequencies. The THS4631DGNR is ideal for amplifying extremely low-level input signals while maintaining a large signal-to-noise ratio.
Key Specifications
| Parameter | Value |
|---|---|
| Package | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad |
| Operating Temperature Range (°C) | -40 to 85 |
| Bandwidth at Unity Gain | 325 MHz |
| Gain Bandwidth Product | 210 MHz |
| Slew Rate | 900 V/µs (G = 2), 1000 V/µs (G = 5) |
| Input Bias Current | 100 pA |
| Input Voltage Noise | 7 nV/√Hz |
| Input Offset Voltage | 500 µV at 25°C |
| Offset Drift | 2.5 µV/°C |
| Input Impedance | 10^9 || 3.9 pF |
| Supply Voltage Range | ±5 V to ±15 V |
| Output Current | 95 mA |
| Mounting Type | Surface Mount |
Key Features
- High Bandwidth: 325 MHz in Unity Gain, 210 MHz Gain Bandwidth Product
- High Slew Rate: 900 V/µs (G = 2), 1000 V/µs (G = 5)
- Low Distortion: –76 dB, SFDR at 5 MHz
- Low Input Bias Current: 100 pA
- Low Input Voltage Noise: 7 nV/√Hz
- Low Offset Voltage: 500 µV at 25°C, 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: Suitable for high-speed integration and active filtering.
Q & A
- What is the bandwidth of the THS4631DGNR at unity gain?
The bandwidth at unity gain is 325 MHz.
- What is the gain bandwidth product of the THS4631DGNR?
The gain bandwidth product is 210 MHz.
- What is the slew rate of the THS4631DGNR?
The slew rate is 900 V/µs (G = 2) and 1000 V/µs (G = 5).
- What is the input bias current of the THS4631DGNR?
The input bias current is 100 pA.
- What is the input voltage noise of the THS4631DGNR?
The input voltage noise is 7 nV/√Hz.
- What is the maximum input offset voltage of the THS4631DGNR?
The maximum input offset voltage is 500 µV at 25°C.
- What is the input impedance of the THS4631DGNR?
The input impedance is 10^9 || 3.9 pF.
- What is the supply voltage range of the THS4631DGNR?
The supply voltage range is ±5 V to ±15 V.
- What is the maximum output current of the THS4631DGNR?
The maximum output current is 95 mA.
- What are some typical applications of the THS4631DGNR?
Typical applications include wideband photodiode amplification, test and measurement systems, ADC and DAC buffering, high-speed integration, and active filtering.
