W-CDMA/W-TDD/TD-SCDMA Zero-IF Receivers
MAX2393 Typical Operating Characteristics (continued)
(MAX2393 EV kit, V CC = 2.8V, HGML mode (see Table 6), f RF = 1910MHz, T A = +25°C, unless otherwise noted.)
SYNTHESIZER CLOSED-LOOP
PHASE NOISE
PLL SETTLING TIME 20MHz STEP
DEMODULATOR |S 11 | vs. FREQUENCY
-40
-50
-60
-70
f OSC = 1910MHz, I CP = 2.5mA
10
8
6
4
0
-5
-80
-90
-100
2
0
-2
117 μ s
-10
-15
HG
-110
-4
-120
-130
-140
-6
-8
-10
-20
-25
LG
1
10
100
1000
0
100
200
300
400
500
600
700
1900
1905
1910 1915
1920
f OFFSET (kHz)
DEMODULATOR GAIN (HGML MODE)
AND NF vs. V AGC
TIME ( μ s)
CASCADED GAIN (HGML MODE)
AND NF vs. V AGC
FREQUENCY (MHz)
COMPOSITE EVM
W-CDMA: PCCPCH + SCH
100
MAX2393 toc54
22
120
MAX2393 toc55
8
90
80
T A = -40 ° C
T A = +25 ° C
T A = +85 ° C
20
18
110
100
T A = -40 ° C
T A = +25 ° C
T A = +85 ° C
7
6
EVM = 15% RMS
70
60
16
14
90
80
5
4
50
40
30
20
12
10
8
6
70
60
50
40
X
X
X
X = CALCULATED WITH
2dB LOSS AT POST-LNA FILTER
X
X
X
3
2
1
0
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4
V AGC (V)
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4
V AGC (V)
+10
0
-10
BASEBAND CHANNEL
FREQUENCY RESPONSE
800
700
BASEBAND CHANNEL GROUP DELAY
vs. FREQUENCY 3.84Mcps
2400
2200
BASEBAND CHANNEL GROUP DELAY
vs. FREQUENCY 1.28Mcps
-20
-30
1.28Mcps
3.84Mcps
600
2000
-40
-50
-60
500
1800
1600
-70
-80
-90
400
300
1400
1200
0.003 0.01
0.1
1
10
30
0.3 0.5 0.7 0.9 1.1 1.3 1.5 1.7 1.9 2.1 2.3
0.3
0.4
0.5
0.6
0.7
0.8
FREQUENCY (MHz)
f OFFSET (MHz)
f OFFSET (MHz)
______________________________________________________________________________________
15
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