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NE5517DR2G View Datasheet(PDF) - ON Semiconductor

Part NameDescriptionManufacturer
NE5517DR2G Dual Operational Transconductance Amplifier ON-Semiconductor
ON Semiconductor ON-Semiconductor
NE5517DR2G Datasheet PDF : 14 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
NE5517, NE5517A, AU5517
Stereo Amplifier With Gain Control
Figure 24 shows a stereo amplifier with variable gain via
a control input. Excellent tracking of typical 0.3 dB is easy
to achieve. With the potentiometer, RP, the offset can be
adjusted. For AC-coupled amplifiers, the potentiometer
may be replaced with two 510 W resistors.
Modulators
Because the transconductance of an OTA (Operational
Transconductance Amplifier) is directly proportional to IABC,
the amplification of a signal can be controlled easily. The
output current is the product from transconductance×input
voltage. The circuit is effective up to approximately 200 kHz.
Modulation of 99% is easy to achieve.
VIN1
VC
VIN2
+VCC
10kW
RIN
1k
15kW
RP
+VCC
RD
30kW
3+
11
NE5517/A
4
IABC
1
RL
10kW
RC
10kW
RIN
1k
15kW
RP
+VCC RD
14
15
13
+
IABC
NE5517/A
6
16
12
10
RL
10kW
INT
+VCC
8
VOUT1
5.1kW
−VCC
+VCC
9
VOUT2
RS
−VCC
INT
Figure 24. Gain-Controlled Stereo Amplifier
VIN2
SIGNAL
RC
30kW
IABC
+VCC
ID
VIN1
CARRIER
VOS
10kW
15kW
1kW
11
3+
2
NE5517/A
4
6
−VCC
1
5
7
RL
10kW
Figure 25. Amplitude Modulator
INT
+VCC
8
VOUT
RS
−VCC
INT
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