STM901-30 ST Microelectronics, Inc., STM901-30 Datasheet - Page 6

• Manufacturer Part Number: STM901-30
• Description: RF Power Module Linear Base Station Applications . Linear Power Amplifier
• Manufacturer: ST Microelectronics, Inc.

MODULE DC AND TEST FIXTURE CONFIGURATION
6/8
C1, C3, C5, C7, C11, C13, C17 : 100 pF
C2, C4, C6, C8, C12, C14, C18 : .001 F
C19 : .1 F
C20, C22 : 100 F
F1, F2, F3 : FAIR-RITE #2664000101
L1, L2, L3
R1, R2, R3, R4 : 20 KOHM
: 5 Turns of 24 AWG Wire, Inner Diameter
1.27mm
Setting Bias: (Ex.: I Q1
1. Set all variable resistors clockwise. (No bias current flows through
2. Record stationary current I O .
3. Adjust R1 for (I O + 100)mA.
4. Adjust R2 for (I O + 100 + 180)mA.
5. Adjust R3 for (I O + 100 + 180 + 50)mA.
6. Adjust R4 for (I O + 100 + 180 + 50 + 150)mA.
transistors when all variable resistors are set clockwise.)
.1A, I Q2
.18A, I Q3
.050A, I Q4
.150A)