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ML485

更新时间： 2024-09-14 05:49:07
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1.6-3.2 GHz High IP3 Mixer with Integrated LO Amp

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ML485  
1.6–3.2 GHz High IP3 Mixer with Integrated LO Amp  
Product Features  
• High dynamic range mixer with  
integrated LO driver  
Product Description  
Functional Diagram  
The ML485 high linearity converter combines a passive  
GaAsFET mixer with an integrated LO driver in an ultra-  
small lead-free/green/RoHS-compliant MSOP-8 package.  
The High dynamic range mixer is able to operate across a  
wide 1.6-3.2 GHz frequency range to achieve +35 dBm  
Input IP3 while drawing a very low 40mA current. The  
ML485 can be used as an upconverter or downconverter in  
a low-side or high-side LO configuration.  
LO  
1
2
3
4
RF  
8
7
6
GND  
GND  
GND  
GND  
• +35 dBm Input IP3  
• 8 dB Conversion Loss  
• RF: 1600 – 3200 MHz  
• LO: 1400 – 3500 MHz  
• IF: 50 – 300 MHz  
Vcc  
IF  
5
Function  
Vcc  
Pin No.  
4
A LO buffer amplifier is integrated on the chip to allow for  
operation directly from a synthesizer, requiring only 0 dBm  
of drive level. The dual-stage LO driver provides a stable  
input power level into the mixer to allow for consistent  
performance over a wide range of LO power levels. The  
converter requires no external baluns and supports a wide  
range of IF frequencies.  
• 5V Supply @ 40 mA  
• 0 dBm Drive Level  
• RoHS-compliant MSOP8 (14mm2)  
RF  
8
IF  
5
1
LO  
GND  
GND  
2, 3, 6, 7  
Backside Paddle  
Applications  
• PCS / 3G Base station / Repeaters  
• TD-SCDMA / WCDMA  
• WiMAX / WiBro  
Typical applications include frequency up/down  
conversion, modulation and demodulation for receivers and  
transmitters used in 2.5G and 3G mobile infrastructure.  
Due to the wide frequency range of operation, the converter  
can also be used for WiMAX, WiBro, ISM, and fixed  
wireless applications.  
• ISM / Fixed Wireless  
• HPA Feed Back Paths  
Specifications(1)  
Parameter  
Units Min Typ Max Min Typ Max Min Typ Max Min Typ Max  
RF Frequency Range  
LO Frequency Range  
IF Frequency Range  
SSB Conversion Loss  
Input IP3 (2)  
MHz  
MHz  
MHz  
dB  
1700 – 1800  
1800 – 2200  
2300 – 2400  
2500 – 2700  
1400 – 1750  
1500 – 2150  
2000 - 2350  
2200 – 2650  
50 – 300  
9.4  
50 – 300  
8.7  
50 – 300  
8.5  
50 – 300  
8.5  
10.5  
10  
dBm  
dBm  
dBm  
dB  
28  
+33  
-5  
30  
+34  
-2  
+37  
-1  
+38  
-1  
LO leakage at RF port  
LO leakage at IF port  
RF – IF Isolation  
-11  
13  
-18  
16  
-25  
-15  
14  
11  
Return Loss: RF Port  
Return Loss: IF Port  
Return Loss: LO Port  
Input P1dB  
dB  
13  
13  
15  
16  
dB  
14  
14  
14  
14  
dB  
10  
10  
12  
13  
dBm  
dBm  
V
20  
20  
19.5  
-2 to +4  
+5  
19.5  
-2 to +4  
+5  
LO Drive Level  
-2 to +4  
+5  
-2 to +4  
+5  
Operating Supply Voltage  
Operating Current  
mA  
40  
40  
40  
40  
1. Specifications are shown at 25 °C, 0 dBm LO drive, IF = 200 MHz, Vdd=5V in a downconverting configuration with a low-side LO.  
2. IIP3 is measured with ∆f = 1 MHz with RFin = 0 dBm / tone.  
Absolute Maximum Rating  
Parameter  
Storage Temperature  
Rating  
-65 to +150 ºC  
Thermal Resistance, Rth  
104 °C / W  
Ordering Information  
Junction Temperature, Tj  
DC Voltage  
LO Power  
150 °C  
+7 V  
Part No. Description  
ML485-G 1.6–3.2 GHz High IP3 Mixer w/ Integrated LO Amp  
ML485-PCB Full Assembled Evaluation Board  
+10 dBm  
+27 dBm  
Input RF Power  
Operation of this device above any of these parameters may cause permanent damage.  
Standard T/R size = 1000 pieces on a 7” reel.  
Specifications and information are subject to change without notice  
Page 1 of 4 February 2008 Rev 1  
WJ Communications, Inc • Phone 1-800-WJ1-4401 • FAX: 408-577-6621 • e-mail: sales@wj.com • Web site: www.wj.com  
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