Ac electrical characteristics – Rainbow Electronics MAX12005 User Manual
Page 3
MAX12005
Satellite IF Switch
3
AC ELECTRICAL CHARACTERISTICS
(MAX12005 EV Kit, V
CC
= +3.0V to +3.5V, f
IN
= 950MHz, V
IN
= 70dBFV, T
A
= -40NC to +85NC, mode set to master, input gain stages
set to 0dB, RF inputs matched to 75I, RF output loads = 75I. Typical values are at +3.3V and at T
A
= +25NC, unless otherwise
noted.) (Note 1)
Note 1: Production tested at +25NC; guaranteed by design and characterization at -40NC and +85NC.
Note 2: To supply the specified input-voltage-detect levels requires the use of a voltage-divider comprised of 12.7kI and 1.02kI
Q
0.5% tolerance resistors. The voltage being divided is expected to be V
OL
= 14.75V maximum and V
OH
= 16.75V minumum.
Note 3: The common input gain step is set by analog control. All gain measurements have only one output connect to each input.
Switch gain measurements do not include cascade inputs as part of the switch signal path.
Note 4: Switch-to-switch gain match is defined as each switch to every other switch gain match. Each switch must be set up with
the same input gain step.
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Operation Frequency
f
RF
950
2150
MHz
DISEQC_RX_ Tone Input Level
V
IN
f
IN
= 22kHz
60
mV
P-P
Switch Gain at 950MHz (Note 3)
0dB gain
0
dB
+6dB gain
+6
+12dB gain
+12
Cascade Input Switch Gain at
950MHz
|S
21|
0
dB
Switch-to-Switch Gain Match
D
|S
21
|
At 950MHz (Note 4)
-1.5
+3.5
dB
Gain Slope with Frequency
Between 950MHz and 2150MHz
+3
dB
Single-Input Source Gain Change
Gain change from single output con-
nected to a single input to four outputs
connected to a single input
-0.4
dB
3rd-Order Intermodulation Product
(Case 1)
IM3
Output level set to +89dBFV by varying
three equal amplitude tones at 955MHz,
962MHz, and 965MHz; measure products
at 952MHz and 958MHz
-35
dBc
3rd-Order Intermodulation Product
(Case 2)
IM3
Output level set to +89dBFV by varying
three equal amplitude tones at 2135MHz,
2142MHz, and 2145MHz; measure prod-
ucts at 2132MHz and 2138MHz
-34
dBc
RFIN1–RFIN8 Input Return Loss
|S
11
|
-12
dB
CASCADE_IN1–CASCADE_IN4 Input
Return Loss
|S
11
|
-12
dB
RFOUT1–RFOUT4 Output Return Loss
|S
22
|
-12
dB
Switch Isolation
55
dB
Port-to-Port Isolation
33
dB
DiSEqC Clock
f
OSC
8
MHz