Overview
The TLC2254AIPWRG4 is a quad operational amplifier from Texas Instruments, part of the TLC225x family. This device is known for its advanced LinCMOS technology, offering rail-to-rail output performance and very low power consumption. It is particularly suited for battery-powered applications and small-signal conditioning for high-impedance sources such as piezoelectric transducers. The TLC2254AIPWRG4 is available in a 14-pin TSSOP package and is fully characterized for operation over a wide temperature range.
Key Specifications
| Parameter | Condition | Typical Value | Maximum Value |
|---|---|---|---|
| Input Offset Voltage (VIO) | At 25°C | 850 µV | 1500 µV |
| Input Bias Current (IIB) | At 25°C | 1 pA | 60 pA |
| Input Offset Current (IIO) | At 25°C | 0.5 pA | 60 pA |
| Common-Mode Input Voltage Range (VICR) | At 25°C | 0 to 4 V | 0 to 3.5 V |
| High-Level Output Voltage (VOH) | IOH = -75 µA, at 25°C | 4.9 V | 4.8 V |
| Low-Level Output Voltage (VOL) | IOL = 500 µA, at 25°C | 0.09 V | 0.15 V |
| Slew Rate at Unity Gain (SR) | VO = 0.5 V to 3.5 V, RL = 100 kΩ, CL = 100 pF | 0.07 V/µs | 0.12 V/µs |
| Equivalent Input Noise Voltage (Vn) | f = 1 kHz, at 25°C | 19 nV/√Hz | |
| Supply Current per Channel | At 25°C | 35 µA |
Key Features
- Rail-to-rail output performance for increased dynamic range in single or split-supply applications.
- Very low power consumption of 35 µA per channel, making it suitable for battery-powered applications.
- High input impedance and low noise, ideal for small-signal conditioning from high-impedance sources.
- Improved noise performance with an equivalent input noise voltage of 19 nV/√Hz at 1 kHz.
- High common-mode rejection ratio (CMRR) of 75 dB to 88 dB.
- Available in a 14-pin TSSOP package.
- Operates over a wide temperature range from -40°C to 125°C.
Applications
- Battery-powered devices and hand-held monitoring equipment due to its low power consumption.
- Remote-sensing applications where low power and high input impedance are crucial.
- Analog-to-digital converter (ADC) interfaces, benefiting from the rail-to-rail output feature.
- High-density, battery-powered equipment where small size and low power are essential.
- Precision applications requiring low input offset voltage and high CMRR.
Q & A
- What is the typical input offset voltage of the TLC2254AIPWRG4?
The typical input offset voltage is 850 µV at 25°C.
- How much current does the TLC2254AIPWRG4 consume per channel?
The device consumes 35 µA of supply current per channel.
- What is the common-mode input voltage range of the TLC2254AIPWRG4?
The common-mode input voltage range is from 0 to 4 V at 25°C.
- What is the slew rate at unity gain for the TLC2254AIPWRG4?
The slew rate at unity gain is 0.07 V/µs to 0.12 V/µs.
- What is the equivalent input noise voltage of the TLC2254AIPWRG4 at 1 kHz?
The equivalent input noise voltage is 19 nV/√Hz at 1 kHz.
- In what package is the TLC2254AIPWRG4 available?
The device is available in a 14-pin TSSOP package.
- What is the operating temperature range of the TLC2254AIPWRG4?
The operating temperature range is from -40°C to 125°C.
- What are some typical applications for the TLC2254AIPWRG4?
Typical applications include battery-powered devices, remote-sensing equipment, ADC interfaces, and high-density battery-powered equipment.
- How does the TLC2254AIPWRG4 compare to previous generations of CMOS amplifiers in terms of noise performance?
The TLC2254AIPWRG4 has a noise level four times lower than competitive micropower solutions.
- What is the common-mode rejection ratio (CMRR) of the TLC2254AIPWRG4?
The CMRR is between 75 dB and 88 dB.
