Rainbow Electronics MAX2442 - Manual (Page 5)

MAX2440/MAX2441/MAX2442
900MHz Image-Reject Receivers
_______________________________________________________________________________________ 5
24
28
26
34
32
30
40
38
36
42
-40 0 20 -20 40 60 80 100
RECEIVER SUPPLY CURRENT
vs. TEMPERATURE
MAX2440/1/2-01
TEMPERATURE (°C)
I CC
(mA)
V CC = 2.7V
PREGND = UNCONNECTED
INCLUDES OSCILLATOR
CURRENT
V CC = 3.3V
V CC = 4.8V
0
1.0
0.5
2.5
2.0
1.5
4.0
3.5
3.0
4.5
-40 0 20 -20 40 60 80 100
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
MAX2440/1/2-02
TEMPERATURE (°C)
I CC
(µ
A)
V CC = 2.7V
V CC = 3.3V
V CC = 4.8V
VCOON = GND
RXON = GND
25
20
15
10
5
0
-5
-10
-15
-20
0 0.5 1.0 1.5 2.0
RECEIVER GAIN vs. LNAGAIN
MAX2440/1/2-03
LNAGAIN VOLTAGE (V)
RECEIVER GAIN (dB)
ADJUSTABLE
GAIN
MAX
GAIN
LNA
PARTIALLY
BIASED
LNA
OFF
AVOID
THIS
REGION
18
22
20
26
24
-40 0 20 -20 40 60 80 100
MAX2440
RECEIVER GAIN vs. TEMPERATURE
MAX2440/1/2-06
TEMPERATURE (°C)
RECEIVER GAIN (dB)
V CC = 2.7V
V CC = 3.3V
V CC = 4.8V
LNAGAIN = V CC
-20
-15
-10
-5
0
5
0 0.5 1.0 1.5 2.0
RECEIVER INPUT IP3 vs. V
LNAGAIN
MAX2440/1/2-04
LNAGAIN VOLTAGE (V)
IIP3 (dBm)
ADJUSTABLE
GAIN
AVOID
THIS
REGION
MAX
GAIN
LNA
PARTIALLY
BIASED
LNA
OFF
0
5
15
10
25
20
30
40
35
0 0.5 1.0 1.5 2.0
RECEIVER NOISE FIGURE
vs. LNAGAIN
MAX2440/1/2-05
LNAGAIN VOLTAGE (V)
NOISE FIGURE (dB)
ADJUSTABLE
GAIN
AVOID
THIS
REGION
MAX
GAIN
LNA
PARTIALLY
BIASED
LNA
OFF
DIV1 = V CC
3.0
4.0
3.5
5.0
5.5
4.5
-40 0 20 -20 40 60 80 100
RECEIVER NOISE FIGURE vs.
TEMPERATURE AND SUPPLY VOLTAGE
MAX2440/1/2-07
TEMPERATURE (°C)
NOISE FIGURE (dB)
V CC = 2.7V
V CC = 3.3V
V CC = 4.8V
LNAGAIN = V CC
DIV1 = V CC
-20
-16
-18
-8
-10
-6
-12
-14
-40 0 20 -20 40 60 80 100
RECEIVER INPUT IP3
vs. TEMPERATURE
MAX2440/1/2-08
TEMPERATURE (°C)
IIP3 (dBm)
V LNAGAIN = 1V
V LNAGAIN = 2V
Typical Operating Characteristics
(MAX242X/MAX246X EV kit, V CC = +3.3V; f LO = 925.7MHz (MAX2440), f LO = 961MHz (MAX2441), f LO = 985MHz (MAX2442),
f RXIN = 915MHz; P RXIN = -35dBm; V LNAGAIN = 2V; V VCOON = 2.4V; RXON = V CC ; MOD = DIV1 = PREGND = GND; T A = +25°C,
unless otherwise noted.)
-9
-8
-4
-5
-3
-6
-7
-40 0 20 -20 40 60 80
MAX2440
RXOUT 1dB COMPRESSION POINT
vs. TEMPERATURE
MAX2440/1/2-9
TEMPERATURE (°C)
1dB COMPRESSION POINT (dBm)
V CC = 2.7V
V
CC
= 4.8V
V CC = 3.3V