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HFA3783 Datasheet, PDF (2/34 Pages) Intersil Corporation – I/Q Modulator/Demodulator and Synthesizer
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Pinout
HFA3783
RX_VCC
GND
IF_RX+
IR_RX-
GND
TX_VAGC
TX_VCC
IF_TX+
IF_TX-
TX_VCC
GND
GND
48 47 46 45 44 43 42 41 40 39 38 37
1
36
2
35
3
34
4
33
5
32
6
31
7
30
8
29
9
28
10
27
11
26
12
25
13 14 15 16 17 18 19 20 21 22 23 24
RXQ+
RXQ-
TXI+
TXI-
1.2V_OUT
TXQ+
TXQ-
GND
LO_VCC
LO_IN+
LO_IN-
GND
Pin Descriptions
PIN NUMBER
NAME
1
RX_VCC
3
IF_RX+
4
IF_RX-
6
TX_VAGC
7
TX_VCC
8
IF_TX+
9
IF_TX-
10
TX_VCC
13
REF_BYP
14
REF_IN
17
SYN_VDD
18
CLK
19
DATA
20
LE
DESCRIPTION
Receive AGC Amplifier Power Supply. Requires high quality capacitor decoupling.
Receive AGC Differential Amplifier Non-Inverting IF Input. Requires a DC blocking capacitor.
Receive AGC Differential Amplifier Inverting IF Input. Requires a DC blocking capacitor. Pins 3 and 4 are
interchangeable and can be used single ended with the other being capacitively bypassed to ground.
Transmit AGC amplifier DC gain control input.
Transmit AGC Amplifier Power Supply. Requires high quality capacitor decoupling.
Transmit AGC Differential Amplifier Positive Output. Open collector requiring DC bias from VCC through
an inductor.
Transmit AGC Differential Amplifier Negative Output. Open collector requiring DC bias from VCC through
an inductor.
Transmit AGC Amplifier Power Supply. Requires high quality capacitor decoupling.
PLL Reference Buffer Signal Negative Differential Input. Pin has active bias and can be used in
conjunction with pin 14 either differential or single ended. CMOS inputs must be DC coupled. Small
sinusoidal inputs must be DC blocked with this pin bypassed to ground via a capacitor.
PLL Reference Buffer Signal Positive Differential Input. Pin has active bias and can be used in conjunction
with pin 13 either differential or single ended. CMOS inputs must be DC coupled. Small sinusoidal inputs
must be DC blocked with this pin used as an input for the reference signal. When used with single ended
CMOS inputs, pin 13 must be left floating. Pins 13 and 14 are interchangeable.
PLL Synthesizer Digital Power Supply. Requires high quality capacitor decoupling.
PLL Synthesizer Serial Interface Clock. CMOS input.
PLL Synthesizer Serial Interface Data. CMOS input.
PLL Synthesizer Serial Interface Latch Enable Control. CMOS input.
2
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