AU5517D Ver la hoja de datos (PDF) - Philips Electronics
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AU5517D Datasheet PDF : 18 Pages
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Philips Semiconductor
Dual operational transconductance amplifier
Product data
NE5517/NE5517A/
AU5517
APPLICATION HINTS
To hold the transconductance gM within the linear range, IABC
should be chosen not greater than 1 mA. The current mirror ratio
should be as accurate as possible over the entire current range. A
current mirror with only two transistors is not recommended. A
suitable current mirror can be built with a PNP transistor array which
causes excellent matching and thermal coupling among the
transistors. The output current range of the DAC normally reaches
from 0 to –2 mA. In this application, however, the current range is
set through RREF (10 kΩ) to 0 to –1 mA.
IDACMAX
+
2
@
VREF
RREF
+
2
@
5V
10kW
+
1mA
VC
+VCC
R4 = R2/ /R3 3 +
R1
11 1
IABC
NE5517
5
7
VIN
R2
–
6
4
IOUT
RL
R3
TYPICAL VALUES: R1 = 47k
R2 = 10k
R3 = 200Ω
R4 = 200Ω
RL = 100k
RS = 47k
Figure 10.
INT
+VCC
8
VOUT
RS
INT
–VCC
SL00315
VIN1
VC
VIN2
+VCC
10k
3+
11
RIN
15k
1k
RP
+VCC
RD
NE5517/A
–
IABC
4
1
RL
30k
10k
RC
10k
RIN
1k
RP
+VCC
14 +
15k 15
IABC
NE5517/A
RD
–
6
13
16
12
10
RL
10k
INT
+VCC
8
VOUT1
5.1k
–VCC
+VCC
9
VOUT2
RS
Figure 11. Gain-Controlled Stereo Amplifier
–VCC
INT
SL00316
2002 Dec 06
11
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