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| 型號(hào)： | MAX2021ETX-T |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 無(wú)繩電話/電話 |
| 英文描述： | High-Dynamic-Range, Direct Up-/Downconversion 750MHz to 1200MHz Quadrature Mod/Demod |
| 中文描述： | TELECOM, CELLULAR, BASEBAND CIRCUIT, QCC36 |
| 封裝： | 6 X 6 MM, TQFN-36 |
| 文件頁(yè)數(shù)： | 7/14頁(yè) |
| 文件大小： | 242K |
| 代理商： | MAX2021ETX-T |
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M
High-Dynamic-Range, Direct Up-/Downconversion
750MHz to 1200MHz Quadrature Mod/Demod
_______________________________________________________________________________________
7
DEMODULATOR CONVERSION LOSS
vs. LO FREQUENCY
M
LO FREQUENCY (MHz)
D
975
900
1125
1050
825
10
9
8
11
12
7
750
1200
P
LO
= 0dBm, V
CC
= 5.0V
T
C
= +85
°
C
T
C
= +25
°
C
T
C
= -40
°
C
DEMODULATOR INPUT IP3
vs. LO FREQUENCY
M
LO FREQUENCY (MHz)
D
975
900
1125
1050
825
36
34
32
38
40
30
750
1200
P
LO
= 0dBm, T
C
= +25
°
C
V
CC
= 4.75V
V
CC
= 5.25V
V
CC
= 5.0V
DEMODULATOR INPUT IP3
vs. LO FREQUENCY
M
LO FREQUENCY (MHz)
D
975
900
1125
1050
825
36
34
32
38
40
30
750
1200
P
LO
= 0dBm, V
CC
= 5.0V
T
C
= +85
°
C
T
C
= +25
°
C
T
C
= -40
°
C
DEMODULATOR INPUT IP2
vs. LO FREQUENCY
M
LO FREQUENCY (MHz)
LO PORT RETURN LOSS
vs. LO FREQUENCY
D
1125
1050
975
900
825
60
70
80
90
50
750
1200
T
C
= -40
°
C
T
C
= +85
°
C
T
C
= +25
°
C
P
LO
= 0dBm, V
CC
= 5.0V
DEMODULATOR PHASE IMBALANCE
vs. LO FREQUENCY
M
D
-8
-6
-4
-2
0
2
4
6
8
10
-10
LO FREQUENCY (MHz)
RF PORT RETURN LOSS
vs. LO FREQUENCY
1125
1050
975
900
825
750
1200
P
LO
= -3dBm
P
LO
= 0dBm
P
LO
= +3dBm
P
LO
= -6dBm
M
-0.15
-0.10
-0.05
0
0.05
0.10
0.15
0.20
-0.20
DEMODULATOR AMPLITUDE IMBALANCE
vs. LO FREQUENCY
D
LO FREQUENCY (MHz)
IF FLATNESS
vs. BASEBAND FREQUENCY
1125
1050
975
900
825
750
1200
P
LO
= -6dBm, -3dBm, 0dBm, +3dBm
Typical Operating Characteristics
(MAX2021
Typical Application Circuit
, V
CC
= +4.75V to +5.25V, GND = 0V, I/Q differential inputs driven from a 100
DC-coupled
source, 0V common-mode input, P
RF
= 5dBm, P
LO
= 0dBm, 750MHz
≤
f
LO
≤
1200MHz, 50
LO and RF system impedance, R1 = 432
,
R2 = 619
, R3 = 332
, T
C
= -40°C to +85°C. Typical values are at V
CC
= +5V, f
LO
= 900MHz, T
C
= +25°C, unless otherwise noted.)
M
LO FREQUENCY (MHz)
L
975
900
1125
1050
825
+10
+15
+20
+5
0
+25
750
1200
P
LO
= -6dBm, -3dBm
P
LO
= +3dBm
P
LO
= 0dBm
M
LO FREQUENCY (MHz)
R
1130
1035
940
845
+40
+35
+30
+25
+20
+15
+10
+5
0
+45
750
1225
P
LO
= -6dBm, -3dBm, 0dBm, +3dBm
M
BASEBAND FREQUENCY (MHz)
I
70
60
10
20
30
40
50
-11
-10
-9
-8
-7
-6
-5
-4
-12
0
80
f
LO
= 1000MHz
f
LO
= 900MHz
P
LO
= 0dBm
DEMODULATOR
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