Overview
The TLC2254CDRG4 is a quadruple operational amplifier produced by Texas Instruments. It is part of the TLC225x family, known for its high input impedance, low noise, and very low power consumption. These amplifiers are ideal for small-signal conditioning, particularly for high-impedance sources such as piezoelectric transducers. They offer rail-to-rail output performance, making them suitable for both single-supply and split-supply applications. The TLC2254 is a micropower device, consuming only 35 µA of supply current per channel, which is beneficial for battery-powered and remote-sensing applications.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Number of Channels | 4 | |
| Total Supply Voltage (Min/Max) | 4.4 V / 16 V | |
| Operating Temperature Range | –40°C to 125°C | |
| Input Bias Current | 1 pA (Typ) | At 25°C |
| Input Offset Voltage | 850 µV (Max) | At 25°C |
| Gain Bandwidth Product (GBP) | 0.2 MHz (Typ) | |
| Slew Rate | 0.12 V/µs (Typ) | |
| Common Mode Rejection Ratio (CMRR) | 83 dB (Typ) | At 25°C |
| Supply Current (per channel) | 35 µA (Typ) | No load, at 25°C |
| Output Current per Channel | 50 mA | |
| Package | SOIC-14 |
Key Features
- High input impedance and low noise, making them excellent for small-signal conditioning.
- Rail-to-rail output performance for increased dynamic range in single or split-supply applications.
- Very low power consumption of 35 µA per channel, suitable for battery-powered applications.
- Low input bias current of 1 pA (Typ) and low input offset voltage of 850 µV (Max) at 25°C.
- Common-mode input voltage range includes the negative rail.
- Available in various packages including SOIC-14, TSSOP-14, and PDIP-14.
- Qualification to automotive standards and available in Q-Temp Automotive and HighRel Automotive Applications.
Applications
- Small-signal conditioning for high-impedance sources such as piezoelectric transducers.
- Battery-powered and remote-sensing applications due to low power consumption.
- Hand-held monitoring devices.
- Interfacing with analog-to-digital converters (ADCs) due to rail-to-rail output feature.
- Precision applications requiring low noise and low input offset voltage.
- Upgrades to TLC27L2/L4 or TS27L2/L4 in standard designs.
Q & A
- What is the typical supply current per channel for the TLC2254?
35 µA per channel at 25°C with no load.
- What is the input bias current of the TLC2254?
1 pA (Typ) at 25°C.
- What is the maximum input offset voltage for the TLC2254?
850 µV (Max) at 25°C.
- What is the gain bandwidth product (GBP) of the TLC2254?
0.2 MHz (Typ).
- What is the slew rate of the TLC2254?
0.12 V/µs (Typ).
- What is the common mode rejection ratio (CMRR) of the TLC2254?
83 dB (Typ) at 25°C.
- What are the typical operating temperature ranges for the TLC2254?
–40°C to 125°C.
- What are some common applications for the TLC2254?
Small-signal conditioning, battery-powered devices, hand-held monitoring, and interfacing with ADCs.
- What packages are available for the TLC2254?
SOIC-14, TSSOP-14, and PDIP-14.
- Is the TLC2254 qualified for automotive applications?
