Overview
The TLE2142AMDR is a high-performance, internally compensated operational amplifier produced by Texas Instruments. It is part of the TLE214x and TLE214xA series, known for their low noise and high-speed precision. These operational amplifiers are built using Texas Instruments' complementary bipolar Excalibur process, making them suitable for a wide range of applications requiring high fidelity and precision.
The TLE2142AMDR is a pin-compatible upgrade to standard industry products and offers improved performance characteristics such as low audio-band noise, high slew rates, and a large output swing. This makes it particularly useful in high-fidelity audio applications, fast actuator/positioning drivers, and other demanding environments.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Input Offset Voltage (VIO) at 25°C | 200 | 900 | 1750 | μV |
| Input Offset Current (IIO) at 25°C | 7 | 100 | 150 | nA |
| Input Bias Current (IIB) at 25°C | -0.8 | -2.1 | -2.1 | μA |
| Common-Mode Input Voltage Range (VICR) | 0 to 3.2 | V | ||
| Supply Voltage Range | ±2.5 to ±22 | V | ||
| Unity Gain Bandwidth | 5.9 | MHz | ||
| Slew Rate (SR+ and SR-) | 40 | V/μs | ||
| Output Current (Short-Circuit) | 20 | mA | ||
| Supply Current (ICC) at No Load | 3.5 | 4.5 | 4.7 | mA |
| Common-Mode Rejection Ratio (CMRR) | 85 | 108 | dB | |
| Supply Voltage Rejection Ratio (kSVR) | 90 | 106 | dB |
Key Features
- Low Noise: The TLE2142AMDR features low audio-band noise of 10.5 nV/√Hz at 1 kHz and 15 nV/√Hz at 10 Hz, making it suitable for high-fidelity audio applications.
- High Slew Rate: It has a symmetrical slew rate of 40 V/μs, which is beneficial for fast actuator/positioning drivers and other high-speed applications.
- Large Output Swing: The device provides a nearly rail-to-rail output swing, with output voltages ranging from VCC− − 0.1 V to VCC+ − 1 V under light current-loading conditions.
- High Gain-Bandwidth Product: With a unity gain bandwidth of 5.9 MHz, it offers high performance in various signal processing tasks.
- Stability with Capacitive Loads: The TLE2142AMDR is stable with capacitive loads up to 10 nF, although the bandwidth decreases at high loading levels.
- Temperature Range: Available in various temperature ranges, including 0°C to 70°C, −40°C to 105°C, and −55°C to 125°C, making it versatile for different environmental conditions.
Applications
- High-Fidelity Audio: The low noise and high slew rate make it ideal for high-fidelity audio applications where signal integrity is crucial.
- Fast Actuator/Positioning Drivers: The fast settling time and high slew rate are beneficial for applications requiring quick and precise positioning.
- Sample-and-Hold Circuits: The device's stability with capacitive loads and low droop characteristics make it suitable for sample-and-hold applications.
- Buffering of Long Cables: It can be used for direct buffering of long cables, including 4-mA to 20-mA current loops.
- Comparators: The TLE2142AMDR can also be used as a comparator due to its high performance and stability.
Q & A
- What is the typical input offset voltage of the TLE2142AMDR at 25°C?
The typical input offset voltage is 900 μV.
- What is the slew rate of the TLE2142AMDR?
The slew rate is typically 40 V/μs.
- What is the unity gain bandwidth of the TLE2142AMDR?
The unity gain bandwidth is 5.9 MHz.
- What is the maximum output current of the TLE2142AMDR?
The maximum short-circuit output current is 20 mA.
- What is the common-mode rejection ratio (CMRR) of the TLE2142AMDR?
The CMRR is typically 85 dB to 108 dB.
- What is the supply voltage range for the TLE2142AMDR?
The supply voltage range is ±2.5 V to ±22 V.
- What are the temperature ranges available for the TLE2142AMDR?
The device is available in temperature ranges of 0°C to 70°C, −40°C to 105°C, and −55°C to 125°C.
- Can the TLE2142AMDR be used as a comparator?
Yes, the TLE2142AMDR can be used as a comparator due to its high performance and stability.
- What is the input resistance of the TLE2142AMDR?
The input resistance is typically 70 MΩ.
- What is the supply current of the TLE2142AMDR at no load?
The supply current at no load is typically 3.5 mA to 4.5 mA.
