HFA3665IA データシートの表示（PDF） - Intersil
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HFA3665IA Datasheet PDF : 8 Pages
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HFA3665
Pin Descriptions
PIN NUMBER
1
NAME
VCC
2
AGC_CTRL
3
PIN_O_IBIAS1
4
GND
5, 6
LNA_OUT
7, 8
GND
9
LNA_IN
10
PIN_O_IBIAS2
11
PIN_I_GND
12
RX_PE
13
R_REF
14
BIAS_GND
15
BIAS_VCC
16
FM_OUT+
17
FM_OUT-
18
CDMA_OUT+
19
CDMA_OUT-
20
LO_IN
21
LO_RET
22
MIX_GND
23
RF_RET
24
RF_IN
25
MIX_IND
26, 28
27
MIX_VCC
SEL
DESCRIPTION
LNA and PIN diode bias control Power Supply.Use high quality RF decoupling capacitors
at the pin.
AGC control current input pin. Requires a 9.53K 1% resistor for scale factor and tempera-
ture compensation of the current sources.
Current output for a PIN diode bias control. Use a 2200pF filter capacitor to ground.
LNA bias ground return.
LNA open collector output. This pins are internally bonded to the same device output.
LNA RF ground return. Degeneration (inductance) can be added to this pin.
LNA input.
Second current output for PIN diode bias control. Use a 2200pF filter capacitor to ground.
PIN diode bias control ground return.
Power enable control input. HIGH for normal operation. LOW for power down.
Bias setting resistor. 523Ω 1% for optimum performance and parameter distribution.
Reference circuit ground return.
Reference circuit Power Supply. Use high quality RF decoupling capacitors right at the pin.
Positive IF FM output. Open collector PNP. Requires a DC return to ground.
Negative IF FM output. Open collector PNP. Requires a DC return to ground.
Positive IF CDMA output. Open collector PNP. Requires a DC return to ground.
Negative IF CDMA output. Open collector PNP. Requires a DC return to ground.
Mixer Local Oscillator input. Requires AC coupling and directly matches to 50Ω.
Mixer Local Oscillator complementary input. Requires a bypass capacitor to ground as a
return reference.
Mixer ground return.
MIxer RF port complementary input. Requires a bypass capacitor to ground as a return ref-
erence.
Mixer RF input. Requires AC coupling and a match network to 50Ω.
Mixer common mode bias inductor. Use a RF choke to ground with high impedance at
900MHz. Low loss inductors with parallel resonance close to 900MHz are ideal.
Mixer Power Supply Pins.Use high quality RF decoupling capacitors at each one of the
pins.
Selects the CDMA or the FM output IF amplifier. HIGH selects the CDMA amplifier. LOW
the FM amplifier output.
2
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