TLC274CDBR

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The TLC274CDBR is a general-purpose dual JFET amplifier with low input bias current, high input impedance, and high open-loop gain. It belongs to the linear amplifiers, instrumentation, Operational Amplifiers, Buffer Amplifiers category. The TLC274CDBR features wide operating temperature and supply voltage range, second-stage overload protection, and overload recovery for both amplifiers to make the device an ideal choice for audio, instrumentation, and general-purpose applications.

This device uses a pair of high-input-impedance JFETs in the input stage to maintain an extremely low input-bias current. An additional PNP transistor is connected in series with the input stage. This ensures an even lower input current and allows the device to operate on a supply voltage as low as 4.5V.

The device employs an open-loop gain of 650dB and a single-ended input impedance of 1012 ohms. The TLC274CDBR complies with the A-Weighted specifications, making it suitable for use in audio applications. It is capable of delivering a continuous output of 4mA, which is suitable to drive headphones of up to 8 ohms.

The device also utilizes a second-stage overload protection circuit, which can help prevent unwanted external effects such as spikes and transients, from affecting its performance. Additionally, the overload protection circuit provides overload recovery for both amplifiers, ensuring that the device continues to operate even after being subjected to excessive overload.

The device features what is known as a temperature compensating MOSFET driver. This helps to regulate the temperature of the amplifier and improve the device’s stability. The MOSFET driver also has the ability to reduce unwanted cross-over distortion and reduce power consumption.

The TLC274CDBR has two input and two output terminals. The input terminals are designated as the non-inverting (plus) and inverting (minus) inputs, while the output terminals designate either the positive output or the negative output.

The device can be configured using a resistive feedback network connected between the output terminals and the inverting input. A portion of the amplifier’s output voltage is fed back to the inverting input, thus allowing the device to operate as an amplifier with a feedback configuration. The TLC274CDBR can be used as a non-inverting amplifier, inverting amplifier, summing amplifier, differential amplifier, or voltage follower.

The TLC274CDBR is designed for use in instrumentation, audio, and general-purpose applications. Its combination of low input bias current and wide operating temperature range make it an ideal choice for use in temperature-dependent applications. Its second-stage overload protection and temperature compensating MOSFET driver make it a reliable device for even the harshest of environments.

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