In this article we consider audio line drivers and receivers.
Audio line driver circuit.
Figure 4 overall frequency response of differential feed and both circuits.
A complete schematic including rfi protection and power supply bypassing is shown in fig.
Excellent rejection of common mode noise and offset errors is achieved by laser trimming of the onboard resistors assuring high gain accuracy.
Line drivers will enhance your audio signal output coming from any factory or aftermarket head unit receiver.
Here is the schematic diagram.
Audio systems by eliminating power line hum rf interference voltage drops and other externally generated noise commonly encountered with long audio cable runs.
By walt jung and adolfo garcia download pdf.
They help increase the volume output without over driving your source or amplifier.
Ic sockets are optional.
The response graph shows the measured frequency response with the differential feed a balanced line driver figure 1 and receiver figure 2.
The 25 mhz bandwidth low distortion and high output current of the ic makes it possible to drive medium impedance loads at a high level of modulation.
The signal is 1db down at 10hz and 30khz which is pretty good considering the overall simplicity of the circuits.
Balanced line driver that s 1646 balanced line driver is a very simple ic to implement requiring very few external components.
Posted by circuit diagram in amplifier wiring diagrams.
The video application uses lt1206 as a main components because it has output derive capability and suitable bandwidth.
So that the lt1206 can also be used for audio applications.
A stereo pair will fit on the d4 prototyping board with room to spare.
The first article in this series analog dialogue 26 2 covering general line driving and buffer design considerations gave examples of video line driver and receiver designs.
This audio line driver circuit is used to drive the final stage of amplifier.
The very low output impedance of around 16 ohms at 1khz makes it possible to use ordinary bell wire loudspeaker or alarm cable for connection.
Audio line driver circuit.
The 25 mhz bandwidth low distortion and high output current of the ic makes it possible to drive medium impedance loads at a high level of modulation.
Op amps in line driver and receiver circuits part 2.
This is the circuit diagram of a two channel audio line driver using the high performance dual opamp ic tsh22 from st microelectronics.
Integrated operational amplifiers are not always suitable for applications where a high signal level u o v rms is required for driving a relatively low impedance z 50 600 ω the amplifier described here is eminently suitable as a high dynamic range line driver of power buffer in public address systems and af.
