Typical operating characteristics (continued) – Rainbow Electronics MAX19997A User Manual
Page 18

Typical Operating Characteristics (continued)
(
Typical Application Circuit, extended RF band (see Table 2), V
CC
= +5.0V, LO is high-side injected for a 350MHz IF, P
LO
= 0dBm,
P
RF
= -5dBm, T
C
= +25°C, unless otherwise noted.)
MAX19997A
Dual, SiGe High-Linearity, 1800MHz to 2900MHz
Downconversion Mixer with LO Buffer
18
______________________________________________________________________________________
RF PORT RETURN LOSS vs. RF FREQUENCY
(LO > RF, EXTENDED RF BAND)
MAX19997A toc72
RF PORT RETURN LOSS (dB)
2200
2100
2000
1900
15
10
25
20
5
0
30
1800
2300
RF FREQUENCY (MHz)
P
LO
= -3dBm, 0dBm, +3dBm
f
IF
= 350MHz
IF PORT RETURN LOSS vs. IF FREQUENCY
(LO > RF, EXTENDED RF BAND)
MAX19997A toc73
IF PORT RETURN LOSS (dB)
410
320
230
140
15
10
25
20
5
0
30
50
500
IF FREQUENCY (MHz)
f
LO
= 2600MHz
V
CC
= 4.75V, 5.0V, 5.25V
IF PORT RETURN LOSS vs. IF FREQUENCY
(LO > RF, EXTENDED RF BAND)
MAX19997A toc74
IF PORT RETURN LOSS (dB)
410
320
230
140
15
10
25
20
5
0
30
50
500
IF FREQUENCY (MHz)
f
LO
= 2600MHz
f
LO
= 2950MHz
f
LO
= 2350MHz
LO PORT RETURN LOSS vs. LO FREQUENCY
(LO > RF, EXTENDED RF BAND)
MAX19997A toc75
LO PORT RETURN LOSS (dB)
2900
3150
2650
2400
2150
10
20
15
5
0
25
1900
3400
LO FREQUENCY (MHz)
P
LO
= -3dBm
P
LO
= 0dBm
P
LO
= +3dBm
SUPPLY CURRENT vs. TEMPERATURE (T
C
)
(LO > RF, EXTENDED RF BAND)
MAX19997A toc76
SUPPLY CURRENT (mA)
45
65
25
5
-15
380
360
370
390
400
350
-35
85
TEMPERATURE (
°C)
V
CC
= 4.75V
V
CC
= 5.0V
V
CC
= 5.25V