Overview
The TLC4502QDG4, produced by Texas Instruments, is a high-precision CMOS single supply rail-to-rail operational amplifier. It is part of the TLC4501 and TLC4502 series, known for their exceptional precision and performance. The amplifier features self-calibrating circuitry that digitally trims the input offset voltage to less than 40 uV within the first 300 ms of operation, eliminating the need for noisy and expensive chopper techniques, laser trimming, and power-hungry bipolar operational amplifiers.
Key Specifications
| Specification | Value |
|---|---|
| Input Offset Voltage | 10 uV (typical), 40 uV (maximum) |
| Input Offset Voltage Drift | 1 uV/°C |
| Input Bias Current | 1 pA |
| Open Loop Gain | 120 dB |
| Gain Bandwidth Product | 4.7 MHz |
| Slew Rate | 2.5 V/us |
| Output Drive Capability | ±50 mA |
| Calibration Time | 300 ms |
| Operating Temperature Range | -55°C to 125°C |
| Package Type | SOIC (D), 8 pins |
| Supply Current | 2.5 mA (per channel) |
Key Features
- Self-calibrates input offset voltage to less than 40 uV within 300 ms of operation.
- Low input offset voltage drift of 1 uV/°C.
- Low input bias current of 1 pA.
- Rail-to-rail output voltage swing.
- Stable driving of 1000 pF capacitive loads.
- High output drive capability of ±50 mA.
- Characterized from -55°C to 125°C.
- Available in Q-Temp Automotive and HighRel Automotive Applications.
Applications
The TLC4502QDG4 is ideal for various applications due to its high precision and performance. These include:
- Data acquisition systems.
- Measurement equipment.
- Industrial control applications.
- Portable digital scales.
Q & A
- What is the typical input offset voltage of the TLC4502QDG4?
The typical input offset voltage is 10 uV, with a maximum of 40 uV. - How does the TLC4502QDG4 calibrate its input offset voltage?
The amplifier features self-calibrating circuitry that digitally trims the input offset voltage within the first 300 ms of operation. - What is the slew rate of the TLC4502QDG4?
The slew rate is 2.5 V/us. - What is the output drive capability of the TLC4502QDG4?
The output drive capability is ±50 mA. - What are the operating temperature ranges for the TLC4502QDG4?
The operating temperature range is from -55°C to 125°C. - What types of applications is the TLC4502QDG4 suitable for?
The TLC4502QDG4 is suitable for data acquisition systems, measurement equipment, industrial control applications, and portable digital scales. - What is the gain bandwidth product of the TLC4502QDG4?
The gain bandwidth product is 4.7 MHz. - Does the TLC4502QDG4 support capacitive loads?
Yes, it can stably drive 1000 pF capacitive loads. - Is the TLC4502QDG4 available in automotive grades?
Yes, it is available in Q-Temp Automotive and HighRel Automotive Applications. - What is the package type of the TLC4502QDG4?
The package type is SOIC (D) with 8 pins.
