Overview
The THS4631 is a high-speed, FET-input operational amplifier designed by Texas Instruments for applications requiring wideband operation, high-input impedance, and high-power supply voltages. It is characterized by its 210-MHz gain bandwidth product, ±15-V supply operation, and a low input bias current of 100 pA. This amplifier is particularly suited for applications that demand fast settling times and good harmonic distortion at high frequencies, making it ideal for wideband photodiode amplification, test and measurement systems, ADC and DAC buffering, high-speed integration, and active filtering.
Key Specifications
| Parameter | Value |
|---|---|
| Gain Bandwidth Product | 210 MHz |
| -3dB Bandwidth | 325 MHz |
| Slew Rate | 1000 V/µs (G = 5) |
| Input Bias Current | 100 pA |
| Input Voltage Noise | 7 nV/√Hz |
| Input Offset Voltage | 260 µV (max at 25°C) |
| Input Impedance | 10^9 Ω || 3.9 pF |
| Supply Voltage Range | ±5 V to ±15 V |
| Output Current | 95 mA (max) |
| Operating Temperature Range | -40°C to 85°C |
| Package Type | 8-pin SOIC, 8-pin MSOP (DGN) with PowerPAD™ |
Key Features
- High bandwidth: 325 MHz in unity gain and 210 MHz gain bandwidth product.
- High slew rate: 1000 V/µs, allowing for fast settling times and good harmonic distortion at high frequencies.
- Low distortion: –76 dB, SFDR at 5 MHz.
- Low input bias current: 100 pA, suitable for amplifying extremely low-level input signals.
- Low voltage noise: 7 nV/√Hz, maintaining a large signal-to-noise ratio.
- Wide supply range: ±5 V to ±15 V, accommodating various power supply configurations.
- High output current capability: up to 95 mA.
- Exposed Pad for enhanced thermal dissipation in MSOP packages).
- Surface Mount technology for easy integration on printed circuit boards).
- RoHS Compliant to meet environmental standards).
Applications
- Wideband photodiode amplification: Ideal for transimpedance amplification of photodiode output current.
- Test and measurement systems: Requires high-input impedance and wideband operation.
- ADC and DAC buffering: High-speed integration and buffering for analog-to-digital and digital-to-analog converters.
- High-speed integration and active filtering: Suitable for applications requiring fast signal processing and high bandwidth).
- Signal processing and audio processing: High performance in amplifying low-level signals while maintaining low noise).
- Communications infrastructure: High bandwidth and low distortion make it suitable for communication systems).
- Data acquisition systems: High input impedance and wideband operation are beneficial for data acquisition applications).
Q & A
- 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 1000 V/µs (G = 5).
- What is the input bias current of the THS4631?
The input bias current of the THS4631 is 100 pA.
- What is the operating temperature range of the THS4631?
The operating temperature range of the THS4631 is -40°C to 85°C.
- What are the typical applications of the THS4631?
The THS4631 is typically used in wideband photodiode amplification, test and measurement systems, ADC and DAC buffering, high-speed integration, and active filtering).
- What package types are available for the THS4631?
The THS4631 is available in 8-pin SOIC and 8-pin MSOP (DGN) with PowerPAD™ packages).
- What is the maximum output current of the THS4631?
The maximum output current of the THS4631 is 95 mA).
- Is the THS4631 RoHS Compliant?
Yes, the THS4631 is RoHS Compliant).
- What is the input impedance of the THS4631?
The input impedance of the THS4631 is 10^9 Ω || 3.9 pF).
- What is the supply voltage range for the THS4631?
The supply voltage range for the THS4631 is ±5 V to ±15 V).
