Rainbow Electronics MAX2701 - Manual (Page 8)

MAX2700/MAX2701
1.8GHz to 2.5GHz Direct Downconversion
Receivers
8 _______________________________________________________________________________________
Typical Operating Characteristics
(MAX2700/MAX2701 EV kit (Figure 3), V CC = +3.0V, T A = +25°C, SHDN = GAIN_SET = V CC , X2_EN = GND, CEXT+ connected to
CEXT-, P LO = -13dBm, F LO = 980MHz (MAX2700) and 1200MHz (MAX2701), P LNAIN = -30dBm, P RFIN = -25dBm, LNAIN and RFIN
(single-ended input to balun) driven from 50 Ω source, LNAOUT terminated into load; MIX_I, MIX_Q AC-coupled to 2k Ω load; IIN1+,
QIN1+, IIN2+, QIN2+ driven from 1.1k
Ω
AC-coupled source; IOUT1, QOUT1 AC-coupled to 2k
Ω
; IOUT2, QOUT2 AC-coupled to
100
Ω
; input to VGAs, 20mVp-p at 1MHz tone, set V AGC = 1.25V, unless otherwise noted.)
180
170
160
150
140
2.5 2.9 2.7 3.1 3.3 3.5
I CC vs. V CC vs. TEMPERATURE
MAX2700-01
V CC (V)
I CC
(mA)
T A = +25°C
T A = -45°C
T A = +85°C
10
12
16
14
18
20
1700 1900 1800 2000 2100
LNA GAIN vs. FREQUENCY
vs. TEMPERATURE
MAX2700-02
FREQUENCY (MHz)
GAIN (dB)
T A = -45 ° C
T A = +25 ° C
T A = +85 ° C
HIGH-GAIN MODE
-25
-30
-35
-40
1700 1900 1800 2000 2100
LNA REVERSE ISOLATION
vs. FREQUENCY vs. GAIN MODE
MAX2700-04
FREQUENCY (MHz)
S
12
(dB)
HIGH-GAIN MODE
LOW-GAIN MODE
1.4
1.8
1.6
2.2
2.0
2.6
2.4
1700 1800 1850 1750 1900 1950 2000
LNA NOISE FIGURE vs. FREQUENCY
vs. TEMPERATURE
MAX2700-05
FREQUENCY (MHz)
NF (dB)
T
A
= +85 ° C
T A = +25 ° C
T
A
= -45 ° C
HIGH-GAIN MODE
-10
-8
-6
-4
-2
0
2
4
1700 1800 1900 2000 2100
LNA GAIN vs. FREQUENCY
vs. TEMPERATURE
MAX2700-03
FREQUENCY (MHz)
GAIN (dB)
T
A
= -45 ° C
T A = +25 ° C
T A = +85 ° C
LOW-GAIN MODE
MAX2700