Datasheet

Complete, Direct-Conversion
Tuner for DVB-S2 Applications
3.53.43.33.23.1
89
90
91
92
93
94
95
96
97
98
88
3.0 3.6
SUPPLY CURRENT vs. SUPPLY VOLTAGE
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
MAX2112 toc01
T
A
= -40°C
T
A
= +25°C
T
A
= +85°C
STANDBY MODE SUPPLY CURRENT
vs. SUPPLY VOLTAGE
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
MAX2112 toc02
3.0 3.1 3.2 3.3 3.4 3.5 3.6
2.3
2.4
2.5
2.6
2.7
2.8
2.9
3.0
T
A
= -40°C
T
A
= +85°C
T
A
= +25°C
SUPPLY CURRENT
vs. BASEBAND FILTER CUTOFF FREQUENCY
MAX2112 toc03
BASEBAND FILTER CUTOFF FREQUENCY (MHz)
SUPPLY CURRENT (mA)
3628 32242016128
86
88
90
92
94
96
98
100
102
104
84
440
HD3 vs. V
OUT
MAX2112 toc04
V
OUT
(V
P-P
)
BASEBAND 3RD-ORDER HARMONIC (dBc)
3.02.52.01.5
-55
-50
-45
-40
-35
-30
-25
-20
-15
-10
-60
1.0 3.5
QUADRATURE PHASE vs. LO FREQUENCY
LO FREQUENCY (MHz)
QUADRATURE PHASE (°)
MAX2112 toc05a
900 1200 1500 1800 2100 2400
86.5
87.5
88.5
89.5
90.5
91.5
92.5
93.5
T
A
= +85°C
f
BASEBAND
= 10MHz
T
A
= +25°C
T
A
= -40°C
QUADRATURE MAGNITUDE MATCHING
vs. LO FREQUENCY
MAX2112 toc05b
LO FREQUENCY (MHz)
QUADRATURE MAGNITUDE MATCHING (dB)
2100180015001200
-0.6
-0.4
-0.2
0.2
0
0.4
0.6
0.8
1.0
-1.0
-0.8
900 2400
T
A
= +85°C
T
A
= +25°C
f
BASEBAND
= 10MHz
T
A
= -40°C
QUADRATURE PHASE
vs. BASEBAND FREQUENCY
MAX2112 toc06a
BASEBAND FREQUENCY (MHz)
QUADRATURE PHASE (°)
161284
87.5
88.5
89.5
90.5
91.5
92.5
93.5
86.5
020
T
A
= +85°C
T
A
= +25°C
f
LO
= 925MHz
T
A
= -40°C
QUADRATURE MAGNITUDE MATCHING
vs. BASEBAND FREQUENCY
MAX2112 toc06b
BASEBAND FREQUENCY (MHz)
QUADRATURE MAGNITUDE MATCHING (dB)
161284
-0.6
-0.4
-0.2
0.2
0
0.4
0.6
0.8
1.0
-1.0
-0.8
020
T
A
= +85°C
T
A
= +25°C
f
LO
= 925MHz
T
A
= -40°C
BASEBAND FILTER
FREQUENCY RESPONSE
MAX2112 toc07
BASEBAND FREQUENCY (MHz)
BASEBAND OUTPUT LEVEL (dB)
604020
-60
-50
-30
-40
-20
-10
0
-80
-70
080
Typical Operating Characteristics
(MAX2112 Evaluation Kit: V
CC
= +3.3V, T
A
= +25°C, baseband output frequency = 5MHz; V
GC1
= +1.2V, default register settings
except BBG[3:0] = 1011.)
MAX2112
Maxim Integrated
5