RECEIVER
MCUK991001G8
Section 5
Issue 1
Technical Guide
– 17 –
Revision 0
The DC level at the output of the Op Amps is 1.35 V with a 200 mV p-p single ended AC swing sufficient to drive the baseband
VEGA. The coupling between the RF output and the baseband output has been designed as DC coupling in order to minimise
the turn-on time of the Rx IC.
5.3.3 GSM 900 Signal Levels
The signal levels through the receiver IC for the GSM 900 band are given below.
Figure 5.2: GSM 900 Nominal and Worst Case Signal Levels
5.3.4 GSM 1800 Signal Levels
The signal levels through the receiver IC for the GSM 1800 are given below.
Figure 5.3: GSM 1800 Nominal and Worst Case Signal Levels
-120.0
-110.0
-100.0
-90.0
-80.0
-70.0
-60.0
ANT
SW I/P
SW I/P
SAW
I/P
LNA
SAW2
I/P
MIX
I/P
IF FILTER
I/P
2nd
MIXER I/P
AMP I/P
(dBm)
Typical Case
Worst Case
10155-1
-120.0
-110.0
-100.0
-90.0
-80.0
-70.0
-60.0
ANT
SW I/P
SW I/P
SAW
I/P
LNA
SAW2
I/P
MIX
I/P
IF FILTER
I/P
2nd
MIXER I/P
AMP I/P
(dBm)
Typical Case
Worst Case
10156-1