Overview
The TLE2142IDR is a high-performance, dual low-noise, high-speed precision operational amplifier manufactured by Texas Instruments. It is part of the TLE214x series, built using the complementary bipolar Excalibur process. This device is a pin-compatible upgrade to standard industry operational amplifiers, offering enhanced performance characteristics such as low noise, high gain-bandwidth product, and fast settling times. The TLE2142IDR is available in an 8-pin SOIC (D) package and is suitable for a wide range of applications requiring precision and high-speed operation.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Conditions |
|---|---|---|---|---|---|
| Input Offset Voltage (VIO) | 220 | 1400 | 2600 | µV | VO = 2.5 V, RS = 50 Ω, VIC = 2.5 V |
| Temperature Coefficient of VIO | 1.7 | µV/°C | Full range | ||
| Input Offset Current (IIO) | 8 | 100 | 200 | nA | VO = 2.5 V, RS = 50 Ω, VIC = 2.5 V |
| Input Bias Current (IIB) | -0.8 | -2 | -2.3 | µA | VO = 2.5 V, RS = 50 Ω, VIC = 2.5 V |
| Common-Mode Input Voltage Range (VICR) | -0.3 | 3.2 | V | RS = 50 Ω | |
| Positive Slew Rate (SR+) | 27 | 45 | V/µs | AVD = -1, RL = 2 kΩ, CL = 100 pF | |
| Settling Time to 0.1% | 340 | ns | AVD = -1, 10-V step | ||
| Equivalent Input Noise Voltage at 1 kHz | 10.5 | nV/√Hz | RS = 20 Ω | ||
| Operating Temperature Range | -40 | 105 | °C | ||
| Supply Voltage Range | 4 | 44 | V |
Key Features
- Low Noise: 10.5 nV/√Hz at 1 kHz, making it suitable for high-fidelity audio applications and other noise-sensitive applications.
- High Gain-Bandwidth Product: 5.9 MHz, ensuring high-speed operation and stability with capacitive loads up to 10 nF.
- Fast Settling Time: 340 ns to 0.1% and 400 ns to 0.01% of a 10-V step, useful in fast actuator/positioning drivers.
- High Slew Rate: Minimum of 27 V/µs, contributing to the device's high-speed performance.
- Low Input Offset Voltage: Maximum of 500 µV at 25°C, with a typical drift of 1.7 µV/°C.
- Single or Split Supply Operation: Compatible with supply voltages ranging from 4 V to 44 V.
- Large Output Swing: Nearly rail-to-rail output swing of VCC + 0.1 V to VCC + 1 V under light current-loading conditions.
- Short-Circuit Protection: Internally limited output current to prevent damage from shorts to either supply).
Applications
- High-Fidelity Audio Systems: The low noise and high power bandwidth make it ideal for audio applications requiring high fidelity and low distortion.
- Fast Actuator/Positioning Drivers: The fast settling times and high slew rates are beneficial in applications requiring quick and precise positioning).
- Sample-and-Hold Circuits: Stable with capacitive loads up to 10 nF, making it suitable for low-droop sample-and-hold applications).
- Direct Buffering of Long Cables: Including 4-mA to 20-mA current loops, due to its stability with capacitive loads).
- Comparators: Can be used as comparators with differential inputs maintained without damage to the device).
Q & A
- What is the typical input offset voltage of the TLE2142IDR?
The typical input offset voltage is 500 µV at 25°C).
- What is the slew rate of the TLE2142IDR?
The minimum slew rate is 27 V/µs for both positive and negative slew rates).
- What is the settling time of the TLE2142IDR to 0.1% and 0.01%?
The settling time is 340 ns to 0.1% and 400 ns to 0.01% of a 10-V step).
- What is the maximum operating temperature range for the TLE2142IDR?
The operating temperature range is -40°C to 105°C).
- Can the TLE2142IDR operate with a single or split supply?
Yes, it can operate with supply voltages ranging from 4 V to 44 V, including single or split supply configurations).
- What is the maximum output swing of the TLE2142IDR?
The output swing is nearly rail-to-rail, from VCC + 0.1 V to VCC + 1 V under light current-loading conditions).
- Is the TLE2142IDR stable with capacitive loads?
Yes, it is stable with capacitive loads up to 10 nF, although the bandwidth decreases at high loading levels).
- Can the TLE2142IDR be used as a comparator?
Yes, it can be used as a comparator with differential inputs maintained without damage to the device).
- What is the common-mode rejection ratio (CMRR) of the TLE2142IDR?
The minimum CMRR is 85 dB).
- What is the supply current of the TLE2142IDR?
The supply current is typically 3.5 mA to 4.5 mA with no load).
