AD6432 Просмотр технического описания (PDF) - Analog Devices
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AD6432 Datasheet PDF : 20 Pages
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AD6432
PIN FUNCTION DESCRIPTIONS
Pin
Label
Description
Function
1
GND
PCB Ground
Not Bonded to IC
2
MODO
TX Modulator Output
AC Coupled, Drives 150 Ω into 50 Ω
3
VPDV
LO2 Divided by 2 Supply Voltage
4
CMTX
On-Chip TX Mixer Common
VPOS
Ground
5
LOLO
Differential RX Mixer LO2 Input Negative
6
LOHI
Differential RX Mixer LO2 Input Positive
7
CMRX
On-Chip RX Mixer Common
AC Coupled, VPOS to VPOS – 100 mV
AC Coupled, VPOS – 100 mV to VPOS
Ground
8
GND
PCB Ground
Not Bonded to IC
9
RFLO
Differential RX Mixer IF1 Input Negative
AC Coupled
10
RFHI
Differential RX Mixer IF1 Input Positive
AC Coupled
11
GND
PCB Ground
Not Bonded to IC
12
VPRX
RX Section Supply Voltage
VPOS
13
MXHI
Differential RX IF1/IF2 Mixer Output Positive
See Figure 30
14
MXLO
Differential RX IF1/IF2 Mixer Output Negative See Figure 30
15
CMIF
On-Chip RX IF2 Common
Ground
16
IFLO
Differential RX IF2 Input Negative
AC Coupled
17
IFHI
Differential RX IF2 Input Positive
AC Coupled
18
CMIF
On-Chip RX IF2 Common
Ground
19
RXPU
RX Enable (Power-Up)
Off = Low < 0.6 V, On = High > 2.5 V
20
GAIN
RX VGA Gain Control Input
0.2 V–2.4 V Using 3 V Supply. Max Gain at 0.2 V
21
GREF
RX VGA Reference Voltage
1.2 V typ
22
GND
PCB Ground
Not Bonded to IC
23
QRXN
Differential Demodulator Q Output Negative
Internal 4.7 kΩ Resistor in Series with the Output
24
QRXP
Differential Demodulator Q Output Positive
Internal 4.7 kΩ Resistor in Series with the Output
25
IRXN
Differential Demodulator I Output Negative
Internal 4.7 kΩ Resistor in Series with the Output
26
IRXP
Differential Demodulator I Output Positive
Internal 4.7 kΩ Resistor in Series with the Output
27
VPDM
Demodulator Supply Voltage
28
VPFL
I/Q LO PLL Filter Cap. Supply Voltage
29
FLTR
I/Q LO PLL Filter
VPOS
To VPOS with Good Decoupling
Referenced to VPFL
30
CMDM
On-Chip Demodulator Common
Ground
31
IFS0
IF2 Frequency Select Bit
“0” = Low < 0.6 V, “1” = High > 2.5 V
32
GND
PCB Ground
Not Bonded to IC
33
FREF
Reference Input (13 MHz for GSM)
AC Coupled. Use 200 mV p-p Input Signal
34
VPPC
Auxiliary Op Amp Supply Voltage
35
PCAO
Auxiliary Op Amp Output
VPOS
Active when TXPU Is High
36
GND
PCB Ground
Not Bonded to IC
37
PCAM
Differential Auxiliary Op Amp Input Negative
0.1 V to VPOS – 2.1 V
38
PCAP
Differential Auxiliary Op Amp Input Positive
0.1 V to VPOS – 2.1 V
39
TXPU
TX Enable (Power-Up)
Low < 0.6 V, High > 2.5 V
40
QTXN
Differential Modulator Q Input Negative
DC Coupled, 1.2 V ± 514 mV
41
QTXP
Differential Modulator Q Input Positive
DC Coupled, 1.2 V ± 514 mV
42
ITXN
Differential Modulator I Input Negative
DC Coupled, 1.2 V ± 514 mV
43
ITXP
Differential Modulator I Input Positive
DC Coupled, 1.2 V ± 514 mV
44
VPTX
TX Section Supply Voltage
VPOS
–4–
REV. 0
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