AU5517中文资料Operational Transconductance Amplifier, Dual数据手册ONSEMI规格书

描述 Description

The AU5517 and NE5517 contain two current-controlled operational transconductance amplifiers, each with a differential input and push-pull output. The AU5517/NE5517 offers significant design and performance advantages over similar devices for all types of programmable gain applications. Circuit performance is enhanced through the use of linearizing diodes at the inputs which enable a 10 dB signal-to-noise improvement referenced to 0.5% THD. The AU5517/NE5517 is suited for a wide variety of industrial and consumer applications. Constant impedance buffers on the chip allow general use of the AU5517/NE5517. These buffers are made of Darlington transistors and a biasing network that virtually eliminate the change of offset voltage due to a burst in the bias current IABC, hence eliminating the audible noise that could otherwise be heard in high quality audio applications.

特性 Features

Constant Impedance Buffers
Delta VBE of Buffer is Constant with Amplifier Ibias Change
Excellent Matching Between Amplifiers
Linearizing Diodes
High Output Signal-to-Noise Ratio

应用 Application

MultiplexersTimersDolbyE HX SystemsCurrent-controlled Amplifiers, FiltersCurrent-controlled Oscillators, Impedances
Electronic Music Synthesizers