BD1321G-TR Integrated Circuits (ICs)

Current - Input Bias:	15nA
Supplier Device Package:	5-SSOP
Package / Case:	SC-74A, SOT-753
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Voltage - Supply, Single/Dual (±):	2.7 V ~ 5.5 V
Current - Output / Channel:	60mA
Current - Supply:	130µA
Voltage - Input Offset:	100µV
Series:	--
Gain Bandwidth Product:	3MHz
Slew Rate:	1 V/µs
Output Type:	--
Number of Circuits:	1
Amplifier Type:	General Purpose
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

BD1321G-TR is a transducer amplifier that converts and amplifies a raw input signal into an output that can be read with instrumentation. This transducer amplifier is primarily used in industrial environments, where it is essential to measure an exact electrical, mechanical, or other physical parameter accurately and quickly.

General Overview

The BD1321G-TR is a high-gain, low-input offset operational amplifier with a low-input bias current and distortion. It features a differentially-connected cascode input stage which ensures excellent linearity, low noise and a wide frequency range. The BD1321G-TR is designed for high accuracy applications such as industrial control, medical and scientific instruments. It is also compatible with a wide range of analog-to-digital converters.

Specifications

The BD1321G-TR has a number of technical specifications. These include a multiple gain range of 0.1V/V to 10V/V with a maximum output of 20mA, an input voltage of ±5V, an input resistance of greater than 500KΩ, a supply voltage of ±15V, a bandwidth of approximately 10MHz, a power consumption of 4mW and a noise figure of less than 800nV/√Hz.

Application Fields

The BD1321G-TR transducer amplifier is commonly used in industrial automation, medical, scientific and measurement applications. It is utilized for transducer conditioning, strain gauge bridging, pressure sensor application, motor and actuator control, and temperature measurement. For example, it is often employed in industrial instruments as a part of an analog-to-digital bridge interface.

Working Principle

The BD1321G-TR transducer amplifier uses an integrated low-offset, low-drift, low-noise amplifier in a differential cascode configuration. Its input stage consists of a differential-input pair of transistors, connected in a cascode configuration to provide high gain and accuracy while minimizing noise. In this setup, the transistors provide gain while the cascode layout gives additional headroom, resulting in improved linearity and low distortion.The output stage of the BD1321G-TR transducer amplifier consists of a single emitter follower transistor that directly drives an output terminal. This paired with an additional current-feedback stage provides the additional buffering, higher drive capability and additional headroom demanded of precision transducer amplifiers.

Conclusion

The BD1321G-TR transducer amplifier is a high-performance, low-power and low-distortion device designed for precision sensor applications. This versatile amplifier has a wide range of applications from industrial process control, motor and actuator control to medical instrumentation. Its wide frequency range and low noise figure make it ideal for applications that require high accuracy and precision, regardless of environment.

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