Overview
The TLC2652CP is a high-precision chopper-stabilized operational amplifier produced by Texas Instruments. It utilizes the Advanced LinCMOS process, which, combined with unique chopper-stabilization circuitry, achieves extremely high DC precision. This amplifier is designed to null input offset voltage continuously, even during variations in temperature, time, common-mode voltage, and power supply voltage. The TLC2652CP is ideal for low-level signal processing applications due to its high precision and low noise characteristics.
Key Specifications
| Parameter | Test Conditions | Typical | Maximum |
|---|---|---|---|
| Input Offset Voltage (VIO) | 25°C | 1 µV | 3 µV |
| Temperature Coefficient of Input Offset Voltage | Full range | 0.003 µV/°C | 0.03 µV/°C |
| Input Offset Current (IIO) | 25°C | 2 pA | 60 pA |
| Input Bias Current (IIB) | 25°C | 4 pA | 60 pA |
| Common-Mode Input Voltage Range (VICR) | Full range | -5 V to 3.1 V | -5 V to 3.1 V |
| Large-Signal Differential Voltage Amplification (AVD) | VO = ±4 V, RL = 10 kΩ | 135 dB | 150 dB |
| Common-Mode Rejection Ratio (CMRR) | VO = 0, VIC = VICRmin | 120 dB | 140 dB |
| Supply-Voltage Rejection Ratio (kSVR) | VDD± = ±1.9 V to ±8 V | 110 dB | 135 dB |
| Supply Current (IDD) | VO = 0, No load | 1.5 mA | 2.4 mA |
Key Features
- Extremely low input offset voltage: 1 µV max
- Low change in offset voltage with temperature: 0.003 µV/°C typ
- Low input offset current: 500 pA max at TA = -55°C to 125°C
- High common-mode rejection ratio (CMRR): 120 dB min
- High supply-voltage rejection ratio (kSVR): 110 dB min
- Single-supply operation with common-mode input voltage range including the negative rail
- No noise degradation with external capacitors connected to VDD-
- Fast overload recovery time with optional output clamp pin
- Internal ESD-protection circuits up to 2000 V as tested under MIL-STD-883C, Method 3015.2
Applications
The TLC2652CP is suitable for various low-level signal processing applications, including:
- Strain gauges
- Thermocouples
- Other transducer amplifiers
- Single-supply or split-supply configurations
Q & A
- What is the input offset voltage of the TLC2652CP? The input offset voltage is 1 µV max at 25°C.
- How does the input offset voltage change with temperature? The temperature coefficient of input offset voltage is 0.003 µV/°C typ.
- What is the common-mode input voltage range of the TLC2652CP? The common-mode input voltage range is -5 V to 3.1 V.
- Does the TLC2652CP support single-supply operation? Yes, it supports single-supply operation with the common-mode input voltage range including the negative rail.
- What is the supply-voltage rejection ratio (kSVR) of the TLC2652CP? The kSVR is 110 dB min.
- How does the TLC2652CP handle ESD? The device incorporates internal ESD-protection circuits that prevent functional failures at voltages up to 2000 V as tested under MIL-STD-883C, Method 3015.2.
- What are the typical applications of the TLC2652CP? It is used in strain gauges, thermocouples, and other transducer amplifiers.
- Can the TLC2652CP be used in both single-supply and split-supply configurations? Yes, it can be used in both configurations.
- What is the maximum supply current of the TLC2652CP? The maximum supply current is 2.4 mA at 25°C.
- Does the TLC2652CP require external components for operation? Yes, two external capacitors are required for operation.
