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GMA7496LD20T Datasheet(PDF) 5 Page - Gamma Microelectronics Inc.

No. de pieza GMA7496LD20T
Descripción Electrónicos  2W2W AMPLIFIER WITH DC VOLUME CONTROL
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Fabricante Electrónico  GAMMA [Gamma Microelectronics Inc.]
Página de inicio  http://www.gammamicro.com.tw/
Logo GAMMA - Gamma Microelectronics Inc.

GMA7496LD20T Datasheet(HTML) 5 Page - Gamma Microelectronics Inc.

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GMA7496L
2W+2W AMPLIFIER WITH DC
VOLUME CONTROL
Electrical Characteristics (continued)
Refer to the test circuit: VS = 14V, RL = 80Ω, Rg = 50 Ω, TA = 25ºC
Parameter
Symbol
Test Condition
Min
Typ
Max
Unit
MUTE STAND-BY & INPUT SELECTION FUNCTIONS
Stand-by ON Threshold
VST ON
3.5
V
Stand-by OFF Threshold
VST OFF
1.5
V
Mute ON Threshold
VM ON
3.5
V
Mute OFF Threshold
VM OFF
1.5
V
Quiescent Current @ Stand-by
IqST-BY
0.6
1
mA
Mute Attenuation
AMUTE
50
65
dB
Stand by on VST-BY = 5V
80
Stand-by Bias Current
IST-BYBIAS
Play or Mute
-20
-5
µA
Mute
1
5
Mute Bias Current
ImuteBIAS
Play
0.2
2
µA
Application Suggestions:
The recommended values of the external components are those shown in the application circuit of figure 1.
However, different values can be used from the following table of references for further helpr.
Component
Suggestion
Value
Purpose
Larger than
Suggestion
Smaller than
Suggestion
R1
300K
Volume control circuit
Longer volume regulation
time
Shorter volume regulation
time
R2
10K
Mute time constant
Longer mute on/off time
Shorter mute on/off time
P1
50K
Volume control circuit
C1
1000
µF
Supply voltage bypass
Danger of oscillation
C2
470nF
Input DC decoupling
Lower low frequency cutoff
Higher low frequency
cutoff
C3
470nF
Input DC decoupling
Lower low frequency cutoff
Higher low frequency
cutoff
C4
470
µF
Ripple rejection
Better SVR
Worse SVR
C5
100nF
Volume control time
constant
Larger volume regulation
time
Smaller volume regulation
time
C6
1000
µF
Output DC decoupling
Lower low frequency cutoff
Higher low frequency
cutoff
C7
1
µF
Mute time constant
Longer mute on/off time
Shorter mute on/off time
C8
1000
µF
Output DC decoupling
Lower low frequency cutoff
Higher low frequency
cutoff
C9
100nF
Supply voltage bypass
Danger of oscillation


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