Overview
The TLC4502CDR, produced by Texas Instruments, is a high-precision CMOS single-supply rail-to-rail operational amplifier. It is part of the TLC4501 and TLC4502 family, known for their exceptional precision and performance. The TLC4502 features self-calibrating circuitry that digitally trims the input offset voltage to less than 40 µV within the first 300 ms of operation, eliminating the need for noisy and expensive chopper techniques or laser trimming. This amplifier is ideal for various applications requiring high precision and reliability, such as data acquisition systems, measurement equipment, industrial control applications, and portable digital scales.
Key Specifications
| Parameter | Typical | Maximum | Unit |
|---|---|---|---|
| Input Offset Voltage | 10 µV | 40 µV | µV |
| Temperature Coefficient of Input Offset Voltage | 1 µV/°C | 1 µV/°C | µV/°C |
| Input Bias Current | 1 pA | 1 pA | pA |
| Open Loop Gain | 120 dB | 120 dB | dB |
| Gain Bandwidth Product | 4.7 MHz | 4.7 MHz | MHz |
| Slew Rate | 2.5 V/µs | 2.5 V/µs | V/µs |
| Output Drive Capability | ±50 mA | ±50 mA | mA |
| Calibration Time | 300 ms | 300 ms | ms |
| Operating Temperature Range | 0 to 70 °C | 0 to 70 °C | °C |
| Package Type | SOIC (D) 8-Pin | SOIC (D) 8-Pin |
Key Features
- Self-calibrating circuitry that digitally trims the input offset voltage to less than 40 µV within the first 300 ms of operation.
- Low input offset voltage drift of 1 µV/°C.
- Input bias current as low as 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
- Data acquisition systems.
- Measurement equipment.
- Industrial control applications.
- Portable digital scales.
Q & A
- What is the typical input offset voltage of the TLC4502CDR?
The typical input offset voltage is 10 µV, with a maximum of 40 µV.
- How does the self-calibrating circuitry work in the TLC4502CDR?
The self-calibrating circuitry digitally trims the input offset voltage to less than 40 µV within the first 300 ms of operation and stores the offset in an integrated successive approximation register (SAR). After calibration, the circuitry drops out of the signal path and shuts down.
- What is the slew rate of the TLC4502CDR?
The slew rate is 2.5 V/µs.
- What is the output drive capability of the TLC4502CDR?
The output drive capability is ±50 mA.
- What is the operating temperature range of the TLC4502CDR?
The operating temperature range is 0 to 70 °C, but it is characterized from -55°C to 125°C.
- What types of applications is the TLC4502CDR suitable for?
The TLC4502CDR is suitable for data acquisition systems, measurement equipment, industrial control applications, and portable digital scales.
- What package type is the TLC4502CDR available in?
The TLC4502CDR is available in an 8-pin SOIC (D) package.
- Does the TLC4502CDR support automotive applications?
- What is the gain bandwidth product of the TLC4502CDR?
The gain bandwidth product is 4.7 MHz.
- How stable is the TLC4502CDR with capacitive loads?
The TLC4502CDR is stable driving 1000 pF capacitive loads.
