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RF2460_06 参数 Datasheet PDF下载

RF2460_06图片预览
型号: RF2460_06
PDF下载: 下载PDF文件 查看货源
内容描述: PCS CDMA低噪声放大器/混频器了1500MHz至2200MHz下变频器 [PCS CDMA LOW NOISE AMPLIFIER/MIXER 1500MHz TO 2200MHz DOWNCONVERTER]
分类和应用: 放大器过程控制系统PCS
文件页数/大小: 24 页 / 619 K
品牌: RFMD [ RF MICRO DEVICES ]
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RF2460  
Pin  
Function Description  
Interface Schematic  
Power down pin. A logic “low” turns the part off. A logic “high” (>1.6V)  
turns the part on.  
1
ENABLE  
Supply Voltage for the LNA, mixer, bias, and logic circuitry. External RF See pin 20.  
and IF bypassing is required. The trace length between the pin and the  
bypass capacitors should be minimized. The ground side of the bypass  
capacitors should connect immediately to ground plane.  
2
VCC1  
Supply Voltage for the LO buffer amplifier. External RF and IF bypass-  
ing is required. The trace length between the pin and the bypass  
capacitors should be minimized. The ground side of the bypass capaci-  
tors should connect immediately to ground plane.  
3
VCC2  
Mixer LO Input Pin.  
4
5
LO IN  
NC  
No connection. For isolation purposes, this pin is connected to the  
ground plane.  
No connection. For isolation purposes, this pin is connected to the  
ground plane.  
6
7
NC  
IF+  
CDMA IF Output pin. This is a balanced output. The internal circuitry, in  
IF1+ GND2 IF1-  
conjunction with an external matching/bias inductor to V , sets the  
CC  
operating impedance. This inductor is typically incorporated in the  
matching network between the output and IF filter. The part is designed  
1.2 pF 1.2 pF  
to drive a 1kΩ load. Because this pin is biased to V , a DC blocking  
CC  
capacitor must be used if the IF filter input has a DC path to ground.  
See Application Schematic.  
No connection. For isolation purposes, this pin is connected to the  
ground plane.  
8
NC  
Same as pin 7, except complementary output.  
See pin 6.  
9
IF-  
No connection. For isolation purposes, this pin is connected to the  
ground plane.  
10  
NC  
Emitter for LNA2. Increasing the inductance on this pin will reduce the  
mixer gain, increase IP3 and noise figure.  
11  
12  
LNA2 E  
MIX IN  
Mixer RF Input Pin. This pin is internally DC biased and should be DC  
blocked if connected to a device with DC present. External matching  
network sets RF and IF impedance for optimum performance.  
MIX IN  
This pin is used to set the bias current and IIP3 of the mixer amplifier  
using a resistor to ground. See plots for values and current settings.  
13  
14  
ISET2  
ISET1  
This pin is used to set the bias current and IIP3 of the LNA amplifier  
using a resistor to ground. See plots for values and current settings.  
LNA output pin. Open collector.  
See pin 20.  
15  
16  
LNA OUT  
MIX GAIN  
CMOS compatible signal controlling mixer gain mode. Setting this sig-  
nal high places the mixer in the high gain mode. Setting this signal low  
places the mixer in low gain mode by bypassing and shutting off the  
mixer buffer amplifier current.  
MIX GAIN  
CMOS compatible signal controlling LNA gain mode. Setting this signal  
high places the LNA in the high gain mode. Setting this signal low  
bypasses the LNA and shuts off the LNA bias current.  
17  
LNA GAIN  
LNA GAIN  
No connection. For isolation purposes, this pin is connected to the  
ground plane.  
18  
19  
NC  
NC  
No connection. For isolation purposes, this pin is connected to the  
ground plane.  
8-86  
Rev B5 060921