Typical operating characteristics (continued) – Rainbow Electronics MAX2105 User Manual
Page 6
MAX2102/MAX2105
Direct-Conversion Tuner ICs for
Digital DBS Applications
6
_______________________________________________________________________________________
Typical Operating Characteristics (continued)
(MAX2102 EV kit circuit (Figure 1), V
CC
= 5V, PSGND = open, MOD = GND, f
RFIN
= 2150MHz, P
RFIN
= -19dBm, f
LO
= 2150.125MHz,
P
LO
= -15dBm driven single-ended into LO, AGC set via servo loop for V
IOUT
= V
QOUT
= 0.5Vp-p, IOUT, QOUT drive AC-coupled
100
Ω
loads, 2k
Ω
from PSOUT to GND, T
A
= +25°C, unless otherwise noted.)
0
3
4
1
2
6
5
7
8
9
10
0.8
1.0
1.2
1.4
1.6
1.8
2.0
2.2
INPUT-REFERRED IP3 vs. FREQUENCY
MAX2102/05-07
LO FREQUENCY (GHz)
INPUT IP3 (dBm)
T
A
= +70°C
T
A
= 0°C
T
A
= +25°C
f1 = f
LO
- 2MHz
f2 = f
LO
- 2.9MHz
P
RFIN
= -19dBm PER TONE
AGC SET VIA SERVO LOOP
FOR 0.5Vp-p PER TONE
10
15
20
25
30
-50
-60
-55
-65
-70
-75
MAX2102
NOISE FIGURE vs. INPUT CARRIER LEVEL
MAX2102/05-05
RFIN CARRIER LEVEL (dBm)
NOISE FIGURE (dB)
T
A
= +70°C
T
A
= +25°C
T
A
= 0°C
f
LO
= 2151MHz
10
15
20
25
30
-50
-60
-55
-65
-70
-75
MAX2102
NOISE FIGURE vs. INPUT CARRIER LEVEL
MAX2102/05-06
RFIN CARRIER LEVEL (dBm)
NOISE FIGURE (dB)
T
A
= +70°C
T
A
= +25°C
T
A
= 0°C
f
LO
= 1451MHz
12.0
13.0
12.5
13.5
14.0
14.5
15.0
0.8
1.0
1.2
1.4
1.6
1.8
2.0
2.2
MAX2102
NOISE FIGURE vs. FREQUENCY
MAX2102/05-04
LO FREQUENCY (GHz)
NOISE FIGURE (dB)
T
A
= 0°C
T
A
= +25°C
T
A
= +70°C
AGC SET FOR
P
RFIN
= -69dBm
0
-80
1
2
3
4
MAX2102
CARRIER LEVEL vs. AGC VOLTAGE
-60
-40
-20
MAX2102/05-03
AGC VOLTAGE (V)
SINGLE-CARRIER INPUT LEVEL
FOR 0.5Vp-p BASEBAND LEVEL (dBm)
AGC SET FOR I
OUT
Q
OUT
= 0.5Vp-p
T
A
= +70°C
T
A
= +25°C
T
A
= 0°C
-70
-40
-50
-60
-30
-10
-20
0
1.6
2.0
2.4
2.8
3.2
3.6
4.0
MAX2105
CARRIER LEVEL vs. AGC VOLTAGE
MAX2102/05-02insert
AGC VOLTAGE (V)
SINGLE-CARRIER POWER FOR 0.5Vp-p
BASEBAND LEVEL (dBm)
T
A
= 0°C
T
A
= +25°C
T
A
= +70°C
AGC SET FOR
I
OUT
, Q
OUT
= 0.5Vp-p
14.5
15.5
15.3
15.1
14.9
14.7
15.7
16.1
15.9
16.3
800
1000 1200 1400 1600 1800 2000 2200
MAX2105
NOISE FIGURE vs. FREQUENCY
MAX2102/05-03insert
LO FREQUENCY (MHz)
NOISE FIGURE (dB)
0°C NF (dB)
AGC SET FOR P
RFIN
= -60dBm
+25°C NF (dB)
+70°C NF (dB)
12
19
18
16
15
14
17
13
20
22
21
23
-50
-55
-60
-65
MAX2105
NOISE FIGURE vs. INPUT CARRIER LEVEL
MAX2102/05-04insert
RFIN CARRIER LEVEL (dBm)
NOISE FIGURE (dB)
T
A
= 0°C
T
A
= +70°C
f
LO
= 2141MHz
T
A
= +25°C
12
19
18
16
15
14
17
13
20
22
21
23
-50
-55
-60
-65
MAX2105
NOISE FIGURE vs. INPUT CARRIER LEVEL
MAX2102/05-05insert
RFIN CARRIER LEVEL (dBm)
NOISE FIGURE (dB)
T
A
= 0°C
T
A
= +70°C
T
A
= +25°C
f
LO
= 1441MHz