Ac electrical characteristics (continued) – Rainbow Electronics MAX2690 User Manual
Page 3
MAX2690
Low-Noise, 2.5GHz
Downconverter Mixer
_______________________________________________________________________________________
3
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX2690 EV kit; V
CC
= +3.0V; P
LO
= -3dBm; P
RF
= -25dBm; SHDN = high; RFIN matched for 900MHz, 1.95GHz, and 2.45GHz as
noted below. Inductor connected from LGND to GND = 39nH for 900MHz operation, 27nH for 1.95GHz operation, and 6.8nH for
2.45GHz operation. T
A
= +25°C, unless otherwise noted.)
Note 1:
Consult the
Applications Information
section for information on designing a matching network.
Note 2:
Guaranteed by design and characterization.
Note 3:
This spurious response is caused by a higher-order mixing product (2x2). Specified RF frequency is applied and IF output
power is observed at the desired IF frequency (200MHz for f
RF
= 900MHz, or 1.95GHz, and 350MHz for f
RF
= 2.45GHz).
Note 4:
From the time SHDN goes high to the time I
CC
reaches 90% of its final value (on), or from the time SHDN goes low to the
time I
CC
drops below 10µA (off).
f
RF
= 2.45GHz, f
LO
= 2.1GHz
f
RF
= 1.95GHz, f
LO
= 1.75GHz
f
RF
= 900MHz, f
LO
= 1.1GHz
-74
RF input = -15dBm
(Note 4)
dBm
CONDITIONS
-56
IF/2 Spurious Response
(Note 3)
-62
µs
1
Turn-On Time
dBm
-28
-32
-32
LO Emission at IF Port
UNITS
MIN
TYP
MAX
PARAMETER
f
RF
= 2.45GHz, f
LO
= 2.1GHz
f
RF
= 1.95GHz, f
LO
= 1.75GHz
f
RF
= 900MHz, f
LO
= 1.1GHz
dBm
-25
-27
-30
LO Emission at RF Port
(Note 4)
µs
1.6
Turn-Off Time
f
RF
= 1.0GHz, f
LO
= 1.1GHz
f
RF
= 1.85GHz, f
LO
= 1.75GHz
f
RF
= 2.275GHz, f
LO
= 2.1GHz