Features: • Constant impedance buffers• DVBE of buffer is constant with amplifier IBIAS change• Excellent matching between amplifiers• Linearizing diodes• High output signal-to-noise ratioApplication• Multiplexers• Timers• Electronic music synthesize...
AU5517: Features: • Constant impedance buffers• DVBE of buffer is constant with amplifier IBIAS change• Excellent matching between amplifiers• Linearizing diodes• High output s...
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SYMBOL | PARAMETER |
RATING |
UNIT |
VS | Supply voltage1 |
44 VDC or ±22 |
V |
PD | Power dissipation, Tamb = 25 °C (still air)2 NE5517N, NE5517AN NE5517D, AU5517D |
1500 1125 |
mW mW |
VIN | Differential input voltage |
±5 |
V |
ID | Diode bias current |
2 |
mA |
IABC | Amplifier bias current |
2 |
mA |
ISC | Output short-circuit duration |
Indefinite |
|
IOUT | Buffer output current3 |
20 |
mA |
Tamb | Operating temperature range NE5517N, NE5517AN AU5517D |
0 °C to +70 °C 40 °C to +125 °C |
°C °C |
VDC | DC input voltage |
+VS to VS |
|
Tstg | Storage temperature range |
65 °C to +150 °C |
°C |
Tsld | Lead soldering temperature (10 sec max) |
230 |
°C |
The AU5517 and NE5517 contain two current-controlled transconductance amplifiers, each with a differential input and push-pull output. The AU 5517/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.