SL1018 Datasheet, PDF (4/9 Pages) AUK corp – FM IF SYSTEM

SL1018
Electrical Characteristics(continued)
Characteristics
Symbol
Test Condition
Signal Meter Output 2
Signal Meter Output 3
Signal Meter Output 4
V_SM2
V_SM3
V_SM4
V_IN = 50dBμ
V_IN = 70dBμ
V_IN = 100dBμ
Muting Drive Output 1
Muting Drive Output 2
V_MD1
V_MD2
Quiescent
V_IN = 100dBμ
AGC Output 1
AGC Output 2
V_O (AGC)1 Quiescent
V_O (AGC)2 V_IN = 100dBμ
Offset Voltage 1
V_OS1
Quiescent, Pin 7 to 13
Offset Voltage 2
V_OS2
Quiescent, Pin 8 to 13
Min.
0.8
1.6
4.5
3.5
0
3.5
0
-0.25
-0.5
Typ.
1.4
2.4
5.3
4.2
0
4.1
0.02
0
0
Max.
2
3.2
6
5
0.3
4.5
0.3
+0.25
+0.5
Unit
V
V
V
V
V
V
V
V
V
Information On Muting Characteristics
The muting operation is performed by an AF mute amplifier, the gain of which decreases
with the increased gain control current applied to the pin 6. (The control current is supplied
by a muting drive circuit and change continuously the gain of an AF mute amplifier) But the
gain does not decrease further when the control current reaches approximately 120 ㎂ or
higher. The lower limit of the gain under this condition depends on a resistor connected
between the pin5 and the ground. And the more the resistance increases, the more the
gain decreases. Thus the maximum attenuation will be set by connecting the resistor
between the pin5 and the ground. Fig.1 shows the muting attenuation with different R₅
between the pin5 and the ground.
SLL1001188
6
5
8
I6
AF Output:
R5
0
-10
-20
-30
P IN6 Cu r r e n t I6 (u A )
100
200
R ₅ = 20KΩ
R₅ = 100KΩ
- Fig. 1 -
KSI-W016-000
4