User Guide

PAMS Technical Documentation System Module
NSB-5
Issue 1 03/01 Nokia Mobile Phones Ltd. Page 69
AGC and Third Mixer in SUMMA
Table 26: AGC and third mixer specifications
Terminating capacitance Input: 8.7
Output: 14.7
pF
Package L x W x H mm
Parameter Minimum
Typical/
Nominal
Maximum Unit/Notes
Input frequency 87 MHz
Output frequency 13 MHz
Total noise figure, SSB, max. gain 15 dB/source=470W
Total noise figure, SSB, min. gain 65 dB/source=470W
Max. voltage gain 40 dB
Min. voltage gain -20 dB
Total receiver absolute gain change
over temperature in a unit, from
SUMMA input to IF output (13MHz)
for gains between 40 to 15 dB
-2 +2 dB
Total receiver absolute gain change
over temperature in a unit, from
SUMMA input to IF output (13MHz)
for gains between 15 to -20 dB
-4 +4 dB
Control voltage for min. gain 0.5 V
Control voltage for max. gain 1.4 V
Gain control slope 85 dB/V
Compression point (1 dB) maximum
gain
800 mVpp
Compression point (1 dB) minimum
gain
80 mVpp
IF input impedance (balanced) 2.4 3.8/2 5.6 kohms/pF
Mixer output impedance (single
ended)
100 ohms
Gain step up/down settling time 10 usec
Power OFF time 10 usec
Power ON time 10 usec
Mixer out to in isolation 45 dB
Parameter Minimum
Typical/
Nominal
Maximum Unit/Notes