Rainbow Electronics MAX2105 - Manual (Page 3)

MAX2102/MAX2105
Direct-Conversion Tuner ICs for
Digital DBS Applications
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AC ELECTRICAL CHARACTERISTICS
(MAX2102 EV kit circuit (Figure 1); V CC = +5V; PSGND = open; MOD = GND; f RFIN = 2150MHz; P RFIN = -19dBm; f LO =
2150.125MHz; P LO = -15dBm driven single-ended into LO; AGC set via servo loop for V IOUT = V QOUT = 0.5Vp-p; IOUT, QOUT drive
AC-coupled 100
Ω
loads; 2k
Ω
from PSOUT to GND; T A = +25°C; unless otherwise noted.)
P RFIN = -19dBm per tone, AGC set via servo loop for
V IOUT = V QOUT = 0.5Vp-p per tone,
f1 RFIN = 1448.1MHz, f2 RFIN = 1449MHz,
f LO = 1451MHz
P RFIN = -19dBm per tone, AGC set via servo loop for
V IOUT = V QOUT = 0.5Vp-p per tone,
f1 RFIN = 1200MHz, f2 RFIN = 2150MHz,
f LO = 951MHz
f RFIN = 1441MHz,
f LO = 1451MHz
CONDITIONS
dBm 6.5 RFIN Input Third-Order Intercept
11.2
dBm 15.1 RFIN Input Second-Order Intercept
13.2
12.9
UNITS MIN TYP MAX PARAMETER
f RFIN = 950MHz to 2150MHz, 50
Ω
source
Defined as
∆
NF/
∆
Gain; for AGC range,
defined as single-carrier power range
of -69dBm to -59dBm (MAX2102) or
-60dBm to -50dBm (MAX2105)
950MHz < f RFIN < 2150MHz, 950MHz < f LO <
2150MHz. Dominated by LO second-harmonic power
causing downconversion of unwanted channel. Test
conditions: f
LO = 1075.5MHz, f RFIN = 2150MHz,
P RFIN = -69dBm (MAX2102) or -60dBm (MAX2105)
P LO = -15dBm, 950MHz < f LO < 2150MHz (Note 3)
P LO = -15dBm, P LO = -15dBm (differentially driven),
950MHz < f LO < 2150MHz (Note 3)
2.3:1
dB/dB
-0.5
Maximum Noise-Figure Variation with
AGC Gain Setting
RFIN Worst-Case VSWR across
Band
dBc -32.3
Maximum Power of Spurious
Downconversion Products
dBm
-49
-54
LO Leakage at RFIN
P RFIN = -69dBm
AGC = 4V,
P
RFIN set via servo
loop for V IOUT =
V QOUT = 0.5Vp-p
MAX2102
MAX2102
dB
P RFIN = -60dBm MAX2105 15.7
P RFIN = -69dBm
f RFIN = 2141MHz,
f LO = 2151MHz
Noise Figure
MAX2105 P RFIN = -60dBm 15.5
MAX2102
MAX2105 11.5
MAX2102
MAX2105 -0.7