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High-Linearity, 650MHz to 1000MHz Upconversion/
Downconversion Mixer with LO Buffer/Switch
AC ELECTRICAL CHARACTERISTICS (700MHz BAND DOWNCONVERTER OPERATION)
(Typical Application Circuit, optimized for the 700MHz band (see Table 1) , C1 = 7pF, C5 = 3.3pF, L1 and C4 are not used, V CC =
4.75V to 5.25V, RF and LO ports driven from 50 Ω sources, P LO = -3dBm to +3dBm, P RF = 0dBm, f RF = 650MHz to 850MHz, f LO =
790MHz to 990MHz, f IF = 140MHz, f LO > f RF , T C = +25°C, unless otherwise noted. Typical values are at V CC = 5V, P RF = 0dBm,
P LO = 0dBm, f RF = 750MHz, f LO = 890MHz, f IF = 140MHz, T C = +25°C, unless otherwise noted.) (Notes 8, 10)
PARAMETER
Conversion Loss
Input 1dB Compression Point
SYMBOL
L C
P 1dB
CONDITIONS
f RF = 750MHz, P RF = 0dBm, P LO = 0dBm
MIN
6.1
TYP
6.9
27.7
MAX
8.1
UNITS
dB
dBm
f RF1 = 749MHz, f RF2 = 750MHz,
Input Third-Order Intercept Point
IIP3
f LO = 890MHz, P RF = 0dBm/tone,
32
37
dBm
P LO = 0dBm
LO Leakage at IF Port
LO Leakage at RF Port
RF-to-IF Isolation
P LO = +3dBm
P LO = +3dBm
36
-33
-20
49
-21
-13
dBm
dBm
dB
2LO-2RF Spurious Response
3LO-3RF Spurious Response
2x2
3x3
40
65
72
82
dBc
dBc
AC ELECTRICAL CHARACTERISTICS (UPCONVERTER OPERATION)
(Typical Application Circuit, L1 = 4.7nH, C4 = 6pF, C1 = 82pF, C5 not used, V CC = 4.75V to 5.25V, RF and LO ports are driven from
50 Ω sources, P LO = -3dBm to +3dBm, P IF = 0dBm, f RF = 815MHz to 1000MHz, f LO = 960MHz to 1180MHz, f IF = 160MHz, f LO > f RF ,
T C = -40°C to +85°C, unless otherwise noted. Typical values are at V CC = 5V, P IF = 0dBm, P LO = 0dBm, f RF = 910MHz, f LO =
1070MHz, f IF = 160MHz, T C = +25°C, unless otherwise noted.) (Note 8)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Conversion Loss
Lc
7.4
dB
Flatness over any one of three frequency
bands (f IF = 160MHz):
Conversion Loss Flatness
f RF = 827MHz to 849MHz
±0.3
dB
f RF = 869MHz to 894MHz
f RF = 880MHz to 915MHz
Conversion Loss Variation Over
Temperature
T C = +25°C to -40°C
T C = +25°C to +85°C
-0.3
0.4
dB
Input Compression Point
P 1dB
(Note 9)
27
dBm
f IF1 = 160MHz, f IF2 = 161MHz,
Input Third-Order Intercept Point
IIP3
P IF = 0dBm/tone, f LO = 1070MHz,
32
36
dBm
P LO = 0dBm, T C = +25°C (Note 10)
Input IP3 Variation Over
Temperature
LO ± 2IF Spur
LO ± 3IF Spur
Output Noise Floor
IIP3
T C = +25°C to -40°C
T C = +25°C to +85°C
P OUT = 0dBm (Note 11)
1.2
-0.9
64
83
-167
dB
dBc
dBc
dBm/Hz
Note 6:
Note 7:
Note 8:
Note 9:
Note 10:
Note 11:
Operation outside this range is possible, but with degraded performance of some parameters.
Not production tested.
All limits include external component losses. Output measurements are taken at IF or RF port of the Typical Application Circuit.
Compression point characterized. It is advisable not to continuously operate the mixer RF/IF inputs above +12dBm.
Guaranteed by design.
Measured with external LO source noise filtered, so its noise floor is -174dBm/Hz. This specification reflects the effects of all
SNR degradations in the mixer, including the LO noise as defined in Application Note 2021: Specifications and Measurements
of Local Oscilator Noise in Integrated Circuit Base Station Mixers.
4
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