Overview
The TLE2142AMD is a high-performance, internally compensated operational amplifier from Texas Instruments, part of the TLE214x and TLE214xA series. These devices are built using the Excalibur process, a complementary bipolar technology, and are designed to offer low noise, high speed, and precision operation. The TLE2142AMD is a pin-compatible upgrade to standard industry operational amplifiers and is known for its low audio-band noise, high slew rate, and fast settling time, making it suitable for various high-fidelity and high-speed applications.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Input Offset Voltage (VIO) | 25°C | 200 | 900 | 1300 | μV |
| Temperature Coefficient of Input Offset Voltage (αVIO) | Full Range | 1 | 7 | 7 | μV/°C |
| Input Offset Current (IIO) | 25°C | 7 | 100 | 150 | nA |
| Input Bias Current (IIB) | 25°C | -0.8 | -2 | -2.1 | μA |
| Common-Mode Input Voltage Range (VICR) | RS = 50 Ω | 0 | 3.2 | 3.2 | V |
| High-Level Output Voltage (VOH) | IOH = -1.5 mA | 3.8 | 4 | 4 | V |
| Low-Level Output Voltage (VOL) | IOL = 1.5 mA | 150 | 225 | 250 | mV |
| Large-Signal Differential Voltage Amplification (AVD) | VCC = ±2.5 V, RL = 2 kΩ | 50 | 220 | 220 | V/mV |
| Unity-Gain Bandwidth (B1) | RL = 2 kΩ, CL = 100 pF | 5.9 | 5.9 | 5.9 | MHz |
| Slew Rate | Typically | 27 | 40 | 40 | V/μs |
| Common-Mode Rejection Ratio (CMRR) | VIC = VICRmin, RS = 50 Ω | 85 | 118 | 118 | dB |
| Supply-Voltage Rejection Ratio (kSVR) | VCC ± = ±2.5 V to ±15 V | 90 | 106 | 106 | dB |
| Short-Circuit Output Current (IOS) | VO = 0, VID = 1 V | -25 | -50 | -50 | mA |
| Supply Current (ICC) | No load | 3.5 | 4.5 | 4.7 | mA |
Key Features
- Low Noise: The TLE2142AMD 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 applications.
- High Speed: It has a high slew rate of 27 V/μs minimum and a unity-gain bandwidth of 5.9 MHz.
- Fast Settling Time: The device has a fast settling time of 340 ns to 0.1% and 400 ns to 0.01% for a 10-V step with a 2-kΩ/100-pF load.
- High Gain-Bandwidth Product: The gain-bandwidth product is 5.9 MHz, ensuring high performance in various applications.
- Low Input Offset Voltage: The input offset voltage is as low as 500 μV maximum at 25°C, and the temperature coefficient of input offset voltage is 1.7 μV/°C typical.
- High Output Swing: The device offers a nearly rail-to-rail output swing, with the output voltage range from VCC− +0.1 V to VCC+ − 1 V under light current-loading conditions.
- Stability with Capacitive Loads: It is stable with capacitive loads up to 10 nF, although the bandwidth decreases at high loading levels.
- Wide Operating Temperature Range: The device is available in various temperature ranges, including 0°C to 70°C, -40°C to 105°C, and -55°C to 125°C.
Applications
- High-Fidelity Audio: The low noise and high slew rate make the TLE2142AMD ideal for high-fidelity audio applications.
- Fast Actuator/Positioning Drivers: The fast settling time and high slew rate are beneficial for fast actuator and positioning drivers.
- Sample-and-Hold Circuits: The device is useful for low-droop sample-and-hold circuits due to its stability with capacitive loads.
- Buffering of Long Cables: It can be used for direct buffering of long cables, including 4-mA to 20-mA current loops.
- Comparators: Both versions can also be used as comparators, maintaining differential inputs of VCC± without damage.
Q & A
- What is the typical input offset voltage of the TLE2142AMD?
The typical input offset voltage is 500 μV at 25°C.
- What is the slew rate of the TLE2142AMD?
The slew rate is typically 40 V/μs.
- What is the unity-gain bandwidth of the TLE2142AMD?
The unity-gain bandwidth is 5.9 MHz.
- How stable is the TLE2142AMD with capacitive loads?
The device is stable with capacitive loads up to 10 nF, although the bandwidth decreases at high loading levels.
- What is the operating temperature range for the TLE2142AMD?
The device is available in various temperature ranges, including 0°C to 70°C, -40°C to 105°C, and -55°C to 125°C.
- What are some typical applications of the TLE2142AMD?
Typical applications include high-fidelity audio, fast actuator/positioning drivers, sample-and-hold circuits, buffering of long cables, and comparators.
- What is the common-mode rejection ratio (CMRR) of the TLE2142AMD?
The CMRR is 85 dB minimum at 25°C.
- What is the supply-voltage rejection ratio (kSVR) of the TLE2142AMD?
The kSVR is 90 dB minimum at 25°C.
- How much short-circuit output current can the TLE2142AMD handle?
The short-circuit output current is -25 mA to -50 mA.
- What is the typical supply current of the TLE2142AMD?
The typical supply current is 3.5 mA to 4.5 mA with no load.
