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參數(shù)資料
| 型號： | RF105 |
| 英文描述： | 900 MHz Digital Spread Spectrum Transceiver |
| 中文描述： | 900兆赫數(shù)字?jǐn)U頻收發(fā)器 |
| 文件頁數(shù)： | 6/12頁 |
| 文件大?。?/td> | 119K |
| 代理商： | RF105 |
RF105
900 MHz Digital Spread Spectrum Transceiver
6
Conexant
W117, Rev. B
September 28, 1999
Conexant Proprietary Information
Interface Description
Table 2. Pin Description
Pin
Name
Description
Pin
Name
Description
1
GND1
Ground
25
GND6
Ground
2
CLK
Synthesizer programming clock input
26
VCC2
Supply for baseband outputs
3
FREF
Reference frequency input for synthesizer
27
RX Q–
Q channel baseband differential outputs
4
DATA
Synthesizer programming data input
28
RX Q+
5
TXREF
Reference for TX data input, ac-coupled to ground
29
RX I–
I channel baseband differential outputs
6
VCC1
Supply for LNA and RX mixer
30
RX I+
7
TXD
Baseband TX data input
31
VCC3
Supply for baseband circuits
8
GND2
LNA emitter ground
32
SR Q–
Q channel DC offset cancellation servo external
9
RXEN
Receive enable
33
SR Q+
capacitor connections
10
LNAATTN
LNA attenuation control
0 = high-gain mode, 1 = low-gain mode
34
SR I–
I channel DC offset cancellation servo external capacitor
connections
11
LNAIN
LNA RF input
35
SR I+
12
GND3
Ground
36
GND7
Ground
13
GND4
Ground
37
GND8
Ground
14
MODSET
Input to set TX modulator gain
38
NC
No connect
15
RFO1
Differential TX RF output
39
VCC4
Supply for VCO
16
RFO2
Differential TX RF output, inverse polarity
40
CON
VCO control input
17
TXEN
Transmit enable
41
VCOBPC
Bias bypass capacitor for VCO bias
18
MIXBPC
Bypass capacitor for RX mixer bias
42
GND9
Ground for VCO
19
GMCRES
Resistor to set cutoff frequency of channel selection filter
43
NC
No connect
20
PS1
Modulator power control input (see Table 3)
44
CHPO
Charge pump output
21
PS2
Modulator power control input (see Table 3)
45
VCC5
Supply for synthesizer
22
GCREF
Reference for gain control input connected to ground
46
SYNTHEN
Synthesizer enable
23
GC
Baseband variable gain amplifier control input
47
STROBE
Synthesizer programming load enable
24
GND5
Ground
48
GND10
Ground
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