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PDF AD8342 Data sheet ( Hoja de datos )
| Número de pieza | AD8342 | |
| Descripción | Active Receive Mixer Low Frequency to 3.8 GHz | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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Data Sheet
FEATURES
Broadband RF, LO, and IF ports
Conversion gain: 3.7 dB
Noise figure: 12.2 dB
Input IP3: 22.7 dBm
Input P1dB: 8.3 dBm
LO drive: 0 dBm
Differential high impedance RF input port
Single-ended, 50 Ω LO input port
Open-collector IF output port
Single-supply operation: 5 V at 98 mA
Power-down mode
Exposed pad LFCSP: 3 mm × 3 mm
APPLICATIONS
Cellular base station receivers
ISM receivers
Radio links
RF instrumentation
GENERAL DESCRIPTION
The AD8342 is a high performance, broadband active mixer. It
is well suited for demanding receive channel applications that
require wide bandwidth on all ports and very low intermodulation
distortion and noise figure.
The AD8342 provides a typical conversion gain of 3.7 dB with
an RF frequency of 238 MHz. The integrated LO driver presents
a 50 Ω input impedance with a low LO drive level, helping to
minimize the external component count.
The differential high impedance broadband RF port allows easy
interfacing to both active devices and passive filters. The RF
input accepts input signals as large as 1.6 V p-p or 8 dBm
(relative to 50 Ω) at P1dB.
Active Receive Mixer
Low Frequency to 3.8 GHz
AD8342
FUNCTIONAL BLOCK DIAGRAM
VPDC PWDN EXRB COMM
12 11 10
9
COMM 13
RFCM 14
RFIN 15
VPMX 16
BIAS
AD8342
8 COMM
7 IFOP
6 IFOM
5 COMM
1 23 4
VPLO LOCM LOIN COMM
Figure 1.
The open-collector differential outputs provide excellent balance
and can be used with a differential filter or IF amplifier, such as
the AD8370, AD8375, AD8351, AD8352, or ADL5561. These
outputs can also be converted to a single-ended signal using a
matching network or a balun transformer. The outputs are capable
of swinging 2 V p-p when biased to the VPOS supply rail.
The AD8342 is fabricated on an Analog Devices, Inc.,
proprietary, high performance SiGe IC process. The AD8342 is
available in a 16-lead LFCSP. It operates over a −40°C to +85°C
temperature range. An evaluation board is also available.
Rev. C
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevices for itsuse,nor foranyinfringementsofpatentsor other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2005–2016 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
1 page  
AD8342
Data Sheet
AC PERFORMANCE
VS = 5 V, TA = 25°C, LO power = 0 dBm, ZO = 50 Ω, RBIAS = 1.82 kΩ, RF termination 100 Ω, IF load = 100 Ω differential, unless otherwise
noted.
Table 2.
Parameter
RF Frequency Range1
LO Frequency Range1
IF Frequency Range1, 2
Conversion Gain
Single Sideband (SSB) Noise Figure
Input Third-Order Intercept (IP3)
Input Second-Order Intercept (IP2)
Input 1 dB Compression Point
(P1dB)
LO to IF Output Leakage
LO to RF Input Leakage
2× LO to IF Output Leakage
RF to IF Output Leakage
IF/2 Spurious
Test Conditions/Comments
Min Typ Max
3.8
4.1
2.4
fRF = 460 MHz, fLO = 550 MHz, fIF = 90 MHz
fRF = 238 MHz, fLO = 286 MHz, fIF = 48 MHz
fRF = 460 MHz, fLO = 550 MHz, fIF = 90 MHz
fRF = 238 MHz, fLO = 286 MHz, fIF = 48 MHz
fRF1 = 460 MHz, fRF2 = 461 MHz, fLO = 550 MHz, fIF1 = 90 MHz, fIF2 = 89 MHz,
each RF tone −10 dBm
3.2
3.7
12.5
12.2
22.2
fRF1 = 238 MHz, fRF2 = 239 MHz, fLO = 286 MHz, fIF1 = 48 MHz, fIF2 = 47 MHz,
each RF tone −10 dBm
22.7
fRF1 = 460 MHz, fRF2 = 410 MHz, fLO = 550 MHz, fIF1 = 90 MHz, fIF2 = 140 MHz
fRF1 = 238 MHz, fRF2 = 188 MHz, fLO = 286 MHz, fIF1 = 48 MHz,fIF2 = 98 MHz
fRF = 460 MHz, fLO = 550 MHz, fIF = 90 MHz
50
44
8.5
fRF = 238 MHz, fLO = 286 MHz, fIF = 48 MHz
LO power = 0 dBm, fLO = 286 MHz
LO power = 0 dBm, fLO = 286 MHz
LO power = 0 dBm, fRF = 238 MHz, fLO = 286 MHz, IF terminated into
100 Ω and measured with a differential probe
RF power = −10 dBm, fRF = 238 MHz, fLO = 286 MHz
RF power = −10 dBm, fRF = 238 MHz, fLO = 286 MHz
8.3
−27
−55
−47
−32
−62
Unit
GHz
GHz
GHz
dB
dB
dB
dB
dBm
dBm
dBm
dBm
dBm
dBm
dBc
dBc
dBm
dBc
dBc
1 See the High Frequency Applications section for details.
2 See the Low Frequency Applications section for details.
Rev. C | Page 4 of 25
5 Page 
AD8342
60
IF = 10MHz
50
IF = 90MHz
IF = 140MHz
40
IF = 48MHz
30
20
10
0
100 150 200 250 300 350 400 450 500 550
RF FREQUENCY (MHz)
Figure 21. Input IP2 vs. RF Frequency (Second RF = RF − 50 MHz)
60
58
56
IF = 10MHz
IF = 48MHz
54
52
50
48
46 IF = 90MHz
44 IF = 140MHz
42
40
–15 –13 –11 –9 –7 –5 –3 –1 1 3 5
LO LEVEL (dBm)
Figure 22. Input IP2 vs. LO Level, fRF = 238 MHz, fRF2 = 188 MHz
14.0
13.5
13.0
12.5
12.0
11.5
11.0
50 100 150 200 250 300 350 400 450 500 550
RF FREQUENCY (MHz)
Figure 23. Noise Figure vs. RF Frequency, IF Frequency = 48 MHz
Data Sheet
60
RF = 238MHz
50
RF = 460MHz
40
30
20
10
0
10 50
100 150 200 250 300 350
IF FREQUENCY (MHz)
Figure 24. Input IP2 vs. IF Frequency (Second RF = RF − 50 MHz)
60
58
56
54
52
50
48
46
44
42
40
4.75
4.85
4.95
5.05
5.15
VPOS (V)
Figure 25. Input IP2 vs. VPOS, fRF1 = 238 MHz,
fRF2 = 188 MHz, fLO = 286 MHz
16
RF = 460MHz
14
5.25
12
RF = 238MHz
10
8
6
4
2
0
10 60 110 160 210 260 310
IF FREQUENCY (MHz)
Figure 26. Noise Figure vs. IF Frequency
Rev. C | Page 10 of 25
11 Page | ||
| Páginas | Total 26 Páginas | |
| PDF Descargar | [ Datasheet AD8342.PDF ] | |
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