Overview
The TLC4502CD is a high-precision CMOS single-supply rail-to-rail operational amplifier produced by Texas Instruments. It is part of the TLC4501 and TLC4502 family, 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
| Parameter | Value |
|---|---|
| Input Offset Voltage | 10 uV (typ), 40 uV (max) |
| Input Offset Voltage Drift | 1 uV/°C |
| Input Bias Current | 1 pA |
| Open Loop Gain | 120 dB |
| Output Voltage Swing | Rail-to-Rail |
| Gain Bandwidth Product | 4.7 MHz |
| Slew Rate | 2.5 V/us |
| Output Drive Capability | ±50 mA |
| Calibration Time | 300 ms |
| Operating Temperature Range | 0°C to 70°C |
| Package | 8-Pin SOIC (D) |
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.
- Ultra-low input bias current of 1 pA.
- High open loop gain of 120 dB.
- Rail-to-rail output voltage swing.
- Stable driving of 1000 pF capacitive loads.
- High gain bandwidth product of 4.7 MHz and slew rate of 2.5 V/us.
- 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 TLC4502CD is ideal for various applications due to its high precision and robust 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 TLC4502CD?
The typical input offset voltage is 10 uV, with a maximum of 40 uV.
- How does the TLC4502CD calibrate its input offset voltage?
The TLC4502CD features self-calibrating circuitry that digitally trims the input offset voltage within the first 300 ms of operation and stores it in an integrated successive approximation register (SAR).
- What is the gain bandwidth product of the TLC4502CD?
The gain bandwidth product is 4.7 MHz.
- What is the slew rate of the TLC4502CD?
The slew rate is 2.5 V/us.
- What is the output drive capability of the TLC4502CD?
The output drive capability is ±50 mA.
- What are the typical applications of the TLC4502CD?
The TLC4502CD is used in data acquisition systems, measurement equipment, industrial control applications, and portable digital scales.
- What is the operating temperature range of the TLC4502CD?
The operating temperature range is 0°C to 70°C.
- What package types are available for the TLC4502CD?
The TLC4502CD is available in an 8-Pin SOIC (D) package.
- Is the TLC4502CD suitable for automotive applications?
Yes, it is available in Q-Temp Automotive and HighRel Automotive Applications and is qualified to automotive standards.
- How stable is the TLC4502CD when driving capacitive loads?
The TLC4502CD is stable when driving 1000 pF capacitive loads).
