Power Amplifiers N903, N960 - Nokia NSW-5 Series Service Manual

NSW-5
Disassembly and Troubleshooting Instructions
Pin no. Pin name
15 GND
16 Vdd MXR

Power Amplifiers N903, N960

RF9103 (N903)
Pin no. Pin name
1 VCC Power supply pin for bias circuit. Add RF bypass capacitor.
2 N/C No connection or GND
3 L TUNE Tuning pin for interstage matching network. A short (TBD)
transmission line length is required for tuning interstage match.
4 Power supply pin for the first stage collector. A RF choke and a
bypass capacitor is required for this pin.
5 GND1 Ground pin for the first stage.
6 RF IN RF input. DC coupled.
7 N/C No connection or GND
8 Vreg Regulated power supply for bias circuit. PA shut down.
9 N/C No connection or GND
10 N/C No connection or GND
11 N/C No connection or GND
12 RF OUT RF output and bias for the output stage.The power supply for
the output transistor needs to be supplied to this pin.
13 RF OUT Same as pin 12.
14 2*f0 Second harmonic trap. Add capacitor to ground.
15 N/C No connection or GND
16 Vbias Bias control 2.8V. Add RF bypass capacitor.
17 Ground Ground connection. The backside of the package should be
connected to the ground plane through a short path.
RF9111 (N960)
Pin no. Pin name
1 N/C No connection. (GND)
2 N/C No connection. (GND)
3 Q2C Power supply pin for the 2. stage. A bypass cap is required.
4 Q1C Power supply pin for the 1. stage. A bypass cap is required.
5 GND Ground pin for the first stage.
6 RF IN RF input. DC block on chip.
7 GND Ground pin for the first stage.
8 Vreg Regulated voltage supply for the bias circuit.
9 GND Ground pin for the first stage.
10 BIAS Bias ground.
11 RF OUT RF output, Use this pin for an output matching capacitor. Do
not feed bias through this pin. (DC coupled)
Page 52
Nominal level
0
2.8V
E Nokia Mobile Phones Ltd.
PAMS Technical Documentation
Description
Ground
Mixer LO–buffer Vdd
and LO–buffer tuning
Description
Description
Issue 1 10/00