Overview
The TLE2142AMJG is a high-performance, low-noise, high-speed precision dual operational amplifier produced by Texas Instruments. It is part of the Excalibur series, known for its high fidelity and precision in various applications. This device is built using Texas Instruments' complementary bipolar Excalibur process, ensuring low audio-band noise and high slew rates, making it suitable for high-fidelity audio and fast actuator/positioning drivers.
Key Specifications
| Parameter | Test Conditions | Typical Value | Unit |
|---|---|---|---|
| Input Offset Voltage | 25°C | 220 - 1900 | μV |
| Temperature Coefficient of Input Offset Voltage | Full range | 1.7 | μV/°C |
| Positive Slew Rate | AVD = −1, RL = 2 kΩ, CL = 100 pF | 40 | V/μs |
| Negative Slew Rate | AVD = −1, RL = 2 kΩ, CL = 500 pF | 40 | V/μs |
| Settling Time to 0.1% | AVD = −1, 2.5-V step, RL = 2 kΩ, CL = 100 pF | 340 ns | ns |
| Settling Time to 0.01% | AVD = −1, 2.5-V step, RL = 2 kΩ, CL = 100 pF | 400 ns | ns |
| Common-Mode Rejection Ratio (CMRR) | VIC = VICRmin, RS = 50 Ω | 85 dB | dB |
| Supply-Voltage Rejection Ratio (SVRR) | VCC = ±2 V to ±22 V | 90 dB | dB |
| Operating Temperature Range | -55°C to 125°C | °C |
Key Features
- Low Audio-Band Noise: The TLE2142AMJG features low audio-band noise of 10.5 nV/√Hz with a 10-Hz 1/f corner, making it ideal for high-fidelity audio applications.
- High Slew Rate: Symmetrical 40-V/μs slew rate, which is beneficial for fast actuator/positioning drivers and other high-speed applications.
- Fast Settling Time: Fast settling times of 340 ns to 0.1% and 400 ns to 0.01% of a 10-V step with a 2-kΩ/100-pF load.
- Stability with Capacitive Loads: Stable with capacitive loads up to 10 nF, although bandwidth decreases at high loading levels.
- High Common-Mode Rejection Ratio (CMRR) and Supply-Voltage Rejection Ratio (SVRR): CMRR of 85 dB and SVRR of 90 dB, ensuring performance independence from supply voltage variations.
- Nearly Rail-to-Rail Output Swing: The all-npn output stage provides a nearly rail-to-rail output swing, enhancing the device's versatility in various applications.
Applications
- High-Fidelity Audio Systems: The low noise and high slew rates make this amplifier suitable for high-fidelity audio applications.
- Fast Actuator/Positioning Drivers: The fast settling times and high slew rates are beneficial for fast actuator and positioning driver applications.
- Direct Buffering of Long Cables: Including 4-mA to 20-mA current loops, this device is useful for direct buffering of long cables.
- Sample-and-Hold Circuits: The stability with capacitive loads makes it suitable for low-droop sample-and-hold circuits.
Q & A
- What is the typical input offset voltage of the TLE2142AMJG?
The typical input offset voltage is between 220 μV and 1900 μV at 25°C. - What is the temperature coefficient of the input offset voltage?
The temperature coefficient of the input offset voltage is 1.7 μV/°C. - What are the slew rates of the TLE2142AMJG?
The positive and negative slew rates are both typically 40 V/μs. - How fast does the TLE2142AMJG settle to 0.1% and 0.01% of a 10-V step?
The settling time to 0.1% is 340 ns, and to 0.01% is 400 ns, with a 2-kΩ/100-pF load. - What is the common-mode rejection ratio (CMRR) of the TLE2142AMJG?
The CMRR is typically 85 dB. - What is the supply-voltage rejection ratio (SVRR) of the TLE2142AMJG?
The SVRR is typically 90 dB. - What is the operating temperature range of the TLE2142AMJG?
The operating temperature range is -55°C to 125°C. - Is the TLE2142AMJG stable with capacitive loads?
Yes, it is stable with capacitive loads up to 10 nF, although the bandwidth decreases at high loading levels. - What are some common applications of the TLE2142AMJG?
Common applications include high-fidelity audio systems, fast actuator/positioning drivers, direct buffering of long cables, and sample-and-hold circuits. - Can the TLE2142AMJG be used as a comparator?
Yes, the TLE2142AMJG can also be used as a comparator.
