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PDF MAX19999 Data sheet ( Hoja de datos )
| Número de pieza | MAX19999 | |
| Descripción | 3000MHz to 4000MHz Downconversion Mixer | |
| Fabricantes | Maxim Integrated Products | |
| Logotipo |  |
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19-4293; Rev 0; 10/08
www.DataSheet4U.com
Dual, SiGe High-Linearity, 3000MHz to
4000MHz Downconversion Mixer with LO Buffer
General Description
The MAX19999 dual-channel downconverter provides
8.3dB of conversion gain, +24dBm input IP3, +11.4dBm
1dB input compression point, and a noise figure of
10.5dB for 3000MHz to 4000MHz WiMAX™ and LTE
diversity receiver applications. With an optimized LO fre-
quency range of 2650MHz to 3700MHz, this mixer is
ideal for low-side LO injection architectures.
In addition to offering excellent linearity and noise per-
formance, the MAX19999 also yields a high level of
component integration. This device includes two dou-
ble-balanced passive mixer cores, two LO buffers, and
a pair of differential IF output amplifiers. Integrated on-
chip baluns allow for single-ended RF and LO inputs.
The MAX19999 requires a nominal LO drive of 0dBm
and a typical supply current of 388mA at VCC = +5.0V
or 279mA at VCC = +3.3V.
The MAX19999 is pin compatible with the MAX19997A
1800MHz to 2900MHz mixer and pin similar with the
MAX19985/MAX19985A and MAX19995/MAX19995A
series of 700MHz to 2200MHz mixers, making this
entire family of downconverters ideal for applications
where a common PCB layout is used across multiple
frequency bands.
The MAX19999 is available in a compact 6mm x 6mm,
36-pin thin QFN package with an exposed pad.
Electrical performance is guaranteed over the extended
temperature range, from TC = -40°C to +85°C.
Applications
3.5GHz WiMAX and LTE Base Stations
Fixed Broadband Wireless Access
Microwave Links
Wireless Local Loop
Private Mobile Radios
Military Systems
Pin Configuration/Functional Diagram and Typical
Application Circuit appear at end of data sheet.
Features
o 3000MHz to 4000MHz RF Frequency Range
o 2650MHz to 3700MHz LO Frequency Range
o 50MHz to 500MHz IF Frequency Range
o 8.3dB Conversion Gain
o +24dBm Input IP3
o 10.5dB Noise Figure
o +11.4dBm Input 1dB Compression Point
o 74dBc Typical 2 x 2 Spurious Rejection at
PRF = -10dBm
o Dual Channels Ideal for Diversity Receiver
Applications
o Integrated LO Buffer
o Integrated LO and RF Baluns for Single-Ended
Inputs
o Low -3dBm to +3dBm LO Drive
o Pin Compatible with the MAX19997A 1800MHz to
2900MHz Mixer
o Pin Similar to the MAX9995/MAX9995A and
MAX19995/MAX19995A 1700MHz to 2200MHz
Mixers and the MAX9985/MAX9985A and
MAX19985/MAX19985A 700MHz to 1000MHz
Mixers
o 39dB Channel-to-Channel Isolation
o Single +5.0V or +3.3V Supply
o External Current-Setting Resistors Provide Option
for Operating Device in Reduced-Power/Reduced-
Performance Mode
Ordering Information
PART
TEMP RANGE PIN-PACKAGE
MAX19999ETX+
-40°C to +85°C 36 Thin QFN-EP*
MAX19999ETX+T -40°C to +85°C 36 Thin QFN-EP*
+Denotes a lead-free/RoHS-compliant package.
*EP = Exposed pad.
T = Tape and reel.
WiMAX is a trademark of WiMAX Forum.
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
1 page  
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Dual, SiGe High-Linearity, 3000MHz to
4000MHz Downconversion Mixer with LO Buffer
+3.3V SUPPLY AC ELECTRICAL CHARACTERISTICS (continued)
(Typical Application Circuit, typical values are at VCC = +3.3V, PRF = -5dBm, PLO = 0dBm, fRF = 3550MHz, fLO = 3200MHz,
fIF = 350MHz, TC = +25°C, unless otherwise noted.) (Note 8)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
IF Output Impedance
ZIF
Nominal differential impedance at the IC’s
IF outputs
200
Ω
IF Output Return Loss
RF terminated into 50Ω, LO driven by a 50Ω
source, IF transformed to 50Ω using
external components shown in the Typical
Application Circuit
19
dB
RF-to-IF Isolation
LO Leakage at RF Port
2LO Leakage at RF Port
LO Leakage at IF Port
28 dB
-36 dBm
-34 dBm
-27 dBm
Channel Isolation
RFMAIN (RFDIV ) converted power
measured at IFDIV (IFMAIN), relative to
IFMAIN (IFDIV), all unused ports terminated
to 50Ω
38.5
dB
Note 5: Not production tested.
Note 6: Guaranteed by design and characterization.
Note 7: Operation outside this range is possible, but with degraded performance of some parameters. See the Typical Operating
Characteristics section.
Note 8: All limits reflect losses of external components, including a 0.9dB loss at fIF = 350MHz due to the 4:1 impedance trans-
former. Output measurements were taken at IF outputs of the Typical Application Circuit.
Note 9: 100% production tested for functional performance.
Note 10: Maximum reliable continuous input power applied to the RF or IF port of this device is +12dBm from a 50Ω source.
Note 11: Measured with external LO source noise filtered so the 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
Measurement of Local Oscillator Noise in Integrated Circuit Base Station Mixers.
_______________________________________________________________________________________ 5
5 Page 
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Dual, SiGe High-Linearity, 3000MHz to
4000MHz Downconversion Mixer with LO Buffer
Typical Operating Characteristics (continued)
(Typical Application Circuit, VCC = +3.3V, LO is low-side injected for a 350MHz IF, PLO = 0dBm, PRF = -5dBm, TC =+25°C, unless
otherwise noted.)
INPUT IP3 vs. RF FREQUENCY
23
TC = +85°C
22
PRF = -5dBm/TONE
VCC = 3.3V
TC = +25°C
21
INPUT IP3 vs. RF FREQUENCY
23
PRF = -5dBm/TONE
VCC = 3.3V
22
21
INPUT IP3 vs. RF FREQUENCY
23
PRF = -5dBm/TONE
22
21
20
19 TC = -30°C
18
3000
3200 3400 3600 3800
RF FREQUENCY (MHz)
4000
20
19 PLO = -3dBm, 0dBm, +3dBm
18
3000
3200 3400 3600 3800
RF FREQUENCY (MHz)
4000
20
19 VCC = 3.0V, 3.3V, 3.6V
18
3000
3200 3400 3600 3800
RF FREQUENCY (MHz)
4000
NOISE FIGURE vs. RF FREQUENCY
13
TC = +85°C
VCC = 3.3V
12
11
10
9
8 TC = -30°C
TC = +25°C
7
3200
3375 3550 3725
RF FREQUENCY (MHz)
3900
2RF-2LO RESPONSE vs. RF FREQUENCY
90
PRF = -5dBm
VCC = 3.3V
80 TC = +85°C
70
NOISE FIGURE vs. RF FREQUENCY
13
VCC = 3.3V
12
11
10
9 PLO = -3dBm, 0dBm, +3dBm
8
7
3200
3375 3550 3725
RF FREQUENCY (MHz)
3900
2RF-2LO RESPONSE vs. RF FREQUENCY
90
PRF = -5dBm
PLO = 0dBm
80
VCC = 3.3V
70
NOISE FIGURE vs. RF FREQUENCY
13
12
11
10
9 VCC = 3.0V, 3.3V, 3.6V
8
7
3200
3375 3550 3725
RF FREQUENCY (MHz)
3900
2RF-2LO RESPONSE vs. RF FREQUENCY
90
PRF = -5dBm
80
VCC = 3.6V
70
60
50
3000
TC = -30°C
TC = +25°C
3200 3400 3600 3800 4000
RF FREQUENCY (MHz)
60 PLO = +3dBm
PLO = -3dBm
50
3000
3200 3400 3600 3800
RF FREQUENCY (MHz)
4000
60
50
3000
VCC = 3.3V
VCC = 3.0V
3200 3400 3600 3800
RF FREQUENCY (MHz)
4000
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 19 Páginas | |
| PDF Descargar | [ Datasheet MAX19999.PDF ] | |
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