SGM8903 Datasheet, PDF (7/14 Pages) SG Micro Corp – Capless 3Vrms Line Driver with Adjustable Gain

SGM8903
TYPICAL APPLICATION CIRCUIT
R_FB
C_IN R_IN
-
R1
C1
LEFT
INPUT
+
C_IN R_IN
C2
R1
C1
R_FB
Capless 3Vrms Line Driver
with Adjustable Gain
LEFT
OUTPUT
Supply
C_BYP
1μF
Line
Driver
Short Circuit
Protection
Line
Driver
Click and
Pop
Suppression
Bias
Circuitry
C_PUMP
1μF
C_{IN RIN}
+
RIGHT
INPUT
-
C_IN ^RIN
R_FB
R1 ^C1
C2
R1
R_FB
C1
10kΩ
C_PVSS
1μF
RIGHT
OUTPUT
To External Power
Supply or Control I/O
NOTES:
1. In order to get good performance, it’s important to select the right C_PUMP, C_PVSS and C_BYP in application. All tests
are performed with circuit set up with X5R and X7R capacitors. Capacitors having high dissipative loss, such as Y5V
capacitor, may cause performance degradation and unexpected system behavior.
2. A 10kΩ resistor is recommended to be put between EN pin and external power supply or control I/O.
SG Micro Corp
www.sg-micro.com
DECEMBER 2016
7