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Adjustable, High-Linearity,
SiGe Dual-Band LNA/Mixer ICs
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX232_ EV kit, V CC = +2.75V, f LNAINH = f MIXINH = 1960MHz, f LNAINL = f MIXINL = 881MHz, f LOLIN = 1091MHz (digital mode), f LOLIN =
991MHz (FM mode), f LOHIN = 1750MHz (MAX2320, MAX2322 with LOX2 = low, MAX2326 with BAND = low, MAX2327), f LLOHIN =
1085MHz (MAX2321 with BAND = low, MAX2322 with LOX2 = high), f LOHIN = 1091MHz (MAX2321 with BAND = high), f LOHIN =
2182MHz (MAX2326 with BAND = high), LO input power = -7dBm (MAX2320/MAX2326), 50 ? system, T A = +25 ° C, unless otherwise
noted.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
-3 σ
TYP
+3 σ
MAX
UNITS
HIGH-GAIN, LOW-LINEARITY, AND LOW-GAIN MODES (Note 1)
Gain (Note 4)
G
PCS
Without doubler
With doubler
10.6
10.2
11.3
10.8
12
11.5
12.1
12.4
12.8
13.1
dB
Cellular Band
11.2
12.1
13
13.8
14.7
Gain Variation Over
Temperature Relative
to +25 ° C
T A = -40 ° C to
+85 ° C
PCS
Cellular
Without doubler
± 1
± 1
7.2
7.5
± 1
± 1
7.6
dB
Noise Figure
NF
PCS
With doubler
(Note 7)
10.5
12
13.4
dB
Cellular
Without divider
With divider
7
7.5
7.2
7.7
7.6
8.1
Input Third-Order
Intercept
IIP3
PCS
Without doubler
With doubler
+1
+2.2
dBm
FM MODE (Note 1)
Cellular
+1.0
Gain (Note 4)
G
T A = +25 ° C
T A = -40 ° C to +85 ° C
9.7
7.8
10.4
9.0
11.2
11.2
11.9
14.0
12.7
15.4
dB
Noise Figure
NF
10.6
11.1
11.5
dB
Input Third-Order
Intercept (Notes 5, 6)
IIP3
T A = -40 ° C to +85 ° C
2.3
3.2
4.9
dBm
LO BUFFER PERFORMANCE (BUFFEN = HIGH)
LO Output Level
LO_OUT Even Harmonic
Distortion
LO Emissions at LNA
Input Port
Load = 100 ? pullup resistor
BUFFEN = GND
Interstage filter rejection = 20dB
-12
-44
-31
-50
dBm
dBc
dBm
Note 1: See Tables 1–5 for operational mode selection.
Note 2: A total of 36 devices from 3 different wafer lots are used to determine the standard deviation. The lots were selected to rep-
resent worst-case process conditions.
Note 3: Operation is characterized for the frequencies specified in the conditions; for other frequencies in the band, see Tables 8–12
for LNA and mixer S parameters.
Note 4: Guaranteed by design, characterization, and production functional test.
Note 5: Guaranteed by design and characterization.
Note 6: For cellular band, RF inputs are -25dBm each tone at 881MHz and 882MHz, f LO = 1091MHz. For PCS band, RF inputs are
-25dBm each tone at 1960MHz and 1961MHz, f LO = 2170MHz. For IIP3 vs. I CC trade-off, see Typical Operating
Characteristics.
6
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