TLV2784AIDRG4

Voltage - Input Offset:	250µV
Base Part Number:	TLV2784A
Supplier Device Package:	14-SOIC
Package / Case:	14-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Voltage - Supply, Single/Dual (±):	1.8 V ~ 3.6 V, ±0.9 V ~ 1.8 V
Current - Output / Channel:	23mA
Current - Supply:	650µA
Series:	--
Current - Input Bias:	2.5pA
Gain Bandwidth Product:	8MHz
Slew Rate:	5 V/µs
Output Type:	Rail-to-Rail
Number of Circuits:	4
Amplifier Type:	General Purpose
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Introduction

TLV2784AIDRG4 is an instrumentation and operational amplifier (OP amp) used in a variety of applications. It is developed by Texas Instruments and is usually part of an integrated circuit (IC) manufactured for use in a wide range of consumer electronic devices. The TLV2784AIDRG4 provides a highly accurate combination of precision amplification solution with an easy to use design.

Overview of the TLV2784AIDRG4

The TLV2784AIDRG4 is a highly accurate amplifier in a standard 4-pin SOT-23 package. The amplifier features a rail-to-rail input, rail-to-rail output, and low quiescent current, as well as a wide voltage supply range of 2.7V to 5.5V. This device is ideal for applications where low noise, low temperature drift, and high accuracy are desired. The wide common mode voltage range allows the TLV2784AIDRG4 to operate even when the input is near the supply rail.

The Primary Circuits of the TLV2784AIDRG4

The TLV2784AIDRG4 is an instrumentation amplifier (IA) in a very simple form, i.e., a 3-opamp arrangement. Its primary circuits consist of three opamps: the input buffer (A1), the programmable gain amplifier (A2), and the output driver (A3). The buffer makes sure that the gain amplifier does not load the source and is isolated from any disturbance that may cause instability. The gain amplifier is a differential amplifier, which amplifies the difference between the two inputs. The amplifier can be programmed to implement feedback configuration, thus allowing the output voltage to be programmed. The output stage driver amplifies the output voltage and drives it to the output stage. The TLV2784AIDRG4 has an open-loop gain of 120dB, a typical slew rate of 10V/µs, and a low offset voltage of 0.15mV.

Applications

The TLV2784AIDRG4 is typically used in applications where high accuracy and low noise are required. These include fast-tracking, HF sensor conditioning, power control and precision low-level signal monitoring. The TLV2784AIDRG4 is also well suited for wireless, medical, test and measurement, hub and communication applications.The TLV2784AIDRG4 is ideal for fast-tracking applications where the input signal changes quickly and has to be amplified with low noise and low distortion. It is also used in power control applications, where the amplifier provides a low differential gain to reduce the power consumption of the system. This device is also used in HF (high-frequency) sensor conditioning applications supplying DC power to the sensor.

Working Principle

The working principle of the TLV2784AIDRG4 is based on the feedback configuration. The device employs three op-amps connected in a feedback configuration, which allows the output voltage to be programmed. The first op-amp (A1) acts as a buffer to ensure a low input impedance and high common mode rejection ratio. The second op-amp (A2) acts as the gain amplifier and is used to amplify the difference between the two inputs. The last op-amp (A3) drives the output voltage to the output stage. The amplifier can be programmed to provide a wide range of gains via the gain resistors.

Conclusion

The TLV2784AIDRG4 is a highly accurate instrumentation and operational amplifier (OP amp) used in a variety of applications. The device provides a highly accurate combination of precision amplification solution with an easy to use design and offers low noise, low temperature drift, and high accuracy. The primary circuits of the TLV2784AIDRG4 consist of three op-amps in a feedback configuration, where it is designed to provide a wide range of gains as needed in numerous applications. This device is ideal for HF sensor conditioning, fast tracking, power control and precision low-level signal monitoring applications.

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