Overview
The TLE2141AIDRG4 is a high-performance, internally compensated operational amplifier produced by Texas Instruments. It is part of the TLE214x series, built using the Excalibur™ complementary bipolar process. This device is known for its low audio-band noise, high slew rates, and low distortion, making it suitable for a variety of precision and high-fidelity applications. The TLE2141AIDRG4 is available in an 8-pin small-outline package (SOIC) and is characterized for operation over a wide temperature range of –55°C to 125°C.
Key Specifications
| Parameter | Test Conditions | Unit | Min | Typ | Max |
|---|---|---|---|---|---|
| Input Offset Voltage (VIO) | VO = 2.5 V, RS = 50 Ω, VIC = 2.5 V | µV | 225 | 1400 | 2100 |
| Temperature Coefficient of Input Offset Voltage (αVIO) | Full range | µV/°C | 1.7 | 1.7 | 1.7 |
| Input Offset Current (IIO) | VO = 2.5 V, RS = 50 Ω, VIC = 2.5 V | nA | 8 | 100 | 250 |
| Input Bias Current (IIB) | VO = 2.5 V, RS = 50 Ω, VIC = 2.5 V | µA | -0.8 | -2 | -2.3 |
| Common-Mode Input Voltage Range (VICR) | RS = 50 Ω | V | -0.3 to 2.7 | -0.3 to 2.9 | -0.3 to 3.2 |
| Positive Slew Rate (SR+) | AVD = –1, RL = 2 kΩ, CL = 500 pF | V/µs | 27 | 45 | 45 |
| Negative Slew Rate (SR–) | AVD = –1, RL = 2 kΩ, CL = 500 pF | V/µs | 27 | 42 | 42 |
| Settling Time to 0.1% (ts) | AVD = –1, 10-V step, RL = 2 kΩ, CL = 100 pF | ns | 340 | 400 | 400 |
| Equivalent Input Noise Voltage (Vn) | f = 1 kHz, RS = 20 Ω | nV/√Hz | 10.5 | 10.5 | 10.5 |
| Common-Mode Rejection Ratio (CMRR) | VIC = VICR(min), RS = 50 Ω | dB | 85 | 90 | 106 |
| Supply-Voltage Rejection Ratio (kSVR) | VCC± = ±2.5 V to ±15 V, RS = 50 Ω | dB | 85 | 90 | 90 |
Key Features
- Low Audio-Band Noise: The TLE2141AIDRG4 features low audio-band noise of 10.5 nV/√Hz with a 10-Hz 1/f corner, making it suitable for high-fidelity audio applications.
- High Slew Rates: Symmetrical slew rates of typically 40 V/μs with loads up to 800 pF ensure fast response times.
- Fast Settling Time: Settling time to 0.1% of a 10-V step is 340 ns, and to 0.01% is 400 ns, under a 2-kΩ/100-pF load.
- High Common-Mode Rejection Ratio and Supply-Voltage Rejection Ratio: Minimum CMRR and kSVR are 85 dB and 90 dB, respectively, ensuring stability across various supply voltages.
- Wide Operating Temperature Range: The device is characterized for operation from –55°C to 125°C, making it suitable for harsh environments.
- Stability with Capacitive Loads: Stable with capacitive loads up to 10 nF, although bandwidth decreases at high loading levels.
- Nearly Rail-to-Rail Output Swing: The all-npn output stage provides a nearly rail-to-rail output swing under light current-loading conditions.
- Short-Circuit Protection: The device can sustain shorts to either supply, with internally limited output current.
Applications
- High-Fidelity Audio Systems: The low noise and high slew rates make it ideal for audio applications requiring high precision and fidelity.
- Fast Actuator/Positioning Drivers: The fast settling time and high slew rates are beneficial in applications requiring quick and precise positioning.
- Sample-and-Hold Circuits: Suitable for low-droop sample-and-hold applications due to its stability with capacitive loads.
- Buffering of Long Cables and Current Loops: Can be used for direct buffering of long cables, including 4-mA to 20-mA current loops.
- Comparators: Can also be used as comparators with differential inputs maintained without damage to the device.
Q & A
- What is the operating temperature range of the TLE2141AIDRG4?
The TLE2141AIDRG4 is characterized for operation from –55°C to 125°C.
- What is the typical input offset voltage of the TLE2141AIDRG4?
The typical input offset voltage is 1400 µV.
- What are the slew rates of the TLE2141AIDRG4?
The positive and negative slew rates are typically 45 V/μs and 42 V/μs, respectively.
- How stable is the TLE2141AIDRG4 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 common-mode rejection ratio (CMRR) of the TLE2141AIDRG4?
The minimum CMRR is 85 dB.
- Can the TLE2141AIDRG4 be used as a comparator?
Yes, the device can be used as a comparator with differential inputs maintained without damage.
- What is the settling time of the TLE2141AIDRG4 to 0.1% of a 10-V step?
The settling time to 0.1% is 340 ns.
- What is the equivalent input noise voltage of the TLE2141AIDRG4?
The equivalent input noise voltage is 10.5 nV/√Hz at 1 kHz.
- Is the TLE2141AIDRG4 suitable for high-fidelity audio applications?
Yes, it is suitable due to its low audio-band noise and high slew rates.
- Does the TLE2141AIDRG4 have short-circuit protection?
Yes, the device can sustain shorts to either supply with internally limited output current.
