Overview
The TLC2254IDRG4 is a quad rail-to-rail, very low-power operational amplifier from Texas Instruments. It is part of the Advanced LinCMOS family, known for its high performance and low power consumption. This device is particularly useful in applications requiring multiple amplifiers with low noise and high output dynamic range. The TLC2254IDRG4 is an upgrade to earlier models like the TLC27L2/L4 and TS27L2/L4, offering improved specifications such as lower input offset voltage, lower noise voltage, and a wider common-mode input voltage range.
Key Specifications
| Parameter | Test Conditions | Typical Value | Minimum Value | Maximum Value |
|---|---|---|---|---|
| Input Offset Voltage | 25°C | 200 µV | - | 1500 µV |
| Input Offset Current | 25°C, RS = 50 Ω | 0.5 pA | - | 60 pA |
| Input Bias Current | 25°C | 1 pA | - | 60 pA |
| Common Mode Input Voltage Range | 25°C, RS = 50 Ω, |VIO| ≤ 5 mV | 0 to 4.2 V | -5 to 3.5 V | - |
| High Level Output Voltage | IOH = -20 µA, 25°C | 4.98 V | - | 4.94 V |
| Slew Rate at Unity Gain | VO = 1.4 V to 2.6 V, RL = 100 kΩ, 25°C | 0.12 V/µs | 0.07 V/µs | 0.12 V/µs |
| Supply Current (four amplifiers) | VO = 2.5 V, No load, 25°C | 140 µA | 70 µA | 250 µA |
| Common Mode Rejection Ratio | VIC = 0 to 2.7 V, VO = 2.5 V, 25°C | 83 dB | 70 dB | 83 dB |
Key Features
- Rail-to-rail output performance for increased dynamic range.
- Very low power consumption, making it ideal for battery-powered equipment.
- Low input offset voltage and low noise voltage.
- Wide common-mode input voltage range.
- High common-mode rejection ratio (CMRR) of up to 83 dB.
- Low input bias and offset currents.
- High differential input resistance and common-mode input resistance.
Applications
The TLC2254IDRG4 is suitable for a variety of applications, including:
- Battery-powered equipment due to its low power consumption.
- High-density designs where multiple amplifiers are required.
- Audio and video circuits requiring low noise and high dynamic range.
- Medical and industrial instrumentation where precision and low power are critical.
- Automotive systems that need robust and reliable operational amplifiers.
Q & A
- What is the typical input offset voltage of the TLC2254IDRG4?
The typical input offset voltage is 200 µV at 25°C. - What is the common-mode input voltage range of the TLC2254IDRG4?
The common-mode input voltage range is from 0 to 4.2 V at 25°C. - How much current does the TLC2254IDRG4 typically consume?
The supply current for four amplifiers is typically 140 µA at 25°C with no load. - What is the slew rate at unity gain for the TLC2254IDRG4?
The slew rate at unity gain is typically 0.12 V/µs at 25°C. - What are the key upgrades of the TLC2254IDRG4 over earlier models?
The TLC2254IDRG4 offers increased output dynamic range, lower noise voltage, and lower input offset voltage compared to earlier models like the TLC27L2/L4 and TS27L2/L4. - What is the maximum positive peak output voltage of the TLC2254IDRG4?
The maximum positive peak output voltage is typically 4.98 V at IOH = -20 µA and 25°C. - What is the common-mode rejection ratio (CMRR) of the TLC2254IDRG4?
The CMRR is up to 83 dB at 25°C. - Is the TLC2254IDRG4 suitable for high-density designs?
Yes, it is suitable for high-density designs due to its small size and low power consumption. - What are some typical applications of the TLC2254IDRG4?
Typical applications include battery-powered equipment, audio and video circuits, medical and industrial instrumentation, and automotive systems. - How does the TLC2254IDRG4 compare to single amplifier alternatives?
For designs requiring single amplifiers, the TLV2211/21/31 family is recommended, which offers similar performance in a smaller SOT-23 package.
