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參數(shù)資料
| 型號(hào)： | 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)： | 7/12頁 |
| 文件大?。?/td> | 119K |
| 代理商： | RF105 |
900 MHz Digital Spread Spectrum Transceiver
RF105
W117, Rev. B
September 28, 1999
Conexant
7
Conexant Proprietary Information
Specifications
Table 3. Electrical Specifications (1 of 3)
Note: T
A
= 25 °C, V
CC
= 3.6 V, f
LO
= 915 MHz
Parameter
Min
Typical
Max
Units
RECEIVER SECTION
RX voltage gain:
LNA high-gain mode (LNAATTN = 0)
GC = 1.3 V
GC = 1.6 V
GC = 1.9 V
LNA gain step
902 MHz
<
f
LO
<
928 MHz
High-gain mode, GC = 1.3 V
LNA high-gain mode, GC = 1.9 V
LNA low-gain mode, GC = 1.9 V
LNA high-gain mode (LNAATTN = 0)
GC = 1.3 V
GC = 1.6 V
GC = 1.9 V
LNA low-gain mode (LNAATTN = 1)
GC = 1.9 V
99.5
77.5
37.5
105
82.5
38
19
0.5
6.5
–36
–15
109.5
87.5
42.5
dB
RX gain variation vs. frequency
RX SSB noise figure:
RX input IP3:
1
dB
dB
dBm
8.0
RX input P1dB:
–101
–79
–47
–97
–74
–43
–22
dBm
AM demodulation suppression at LNA input to mixer output
LO power at LNAIN
I/Q phase imbalance
I/Q amplitude imbalance
Input high voltage, LNAATTN, RXEN
Input low voltage, LNAATTN, RXEN
Input high current, RXEN
Input low current , RXEN
Input high current, LNAATTN
Input low current, LNAATTN
GC I
IN
Baseband amplifier gain control range (GC = 1.3V – 1.9V)
GC input voltage range
Baseband amplifier gain control sensitivity
60
dB
dBm
deg
dB
V
–80
±1
0.5
±5
3
VIH
VIL
IIH
IIL
IIH
IIL
1.9
0.75
200
125
μ
A
–25
60
μ
A
–25
–500
60
1.2
500
75
2.0
0.17
μ
A
dB
V
67
1.6
GC = 1.3–1.9 V
GC = 1.3 V
GC = 1.6 V
GC = 1.9 V
0.04
0.14
0.13
–45
–14
20
0.82
70
dB/mV
RX P1dB @ 3.9 MHz offset
LNA high gain, GC = 1.9 V
LNA low gain,
GC = 1.9 V
dBm
Baseband output load capacitance
Baseband LPF 3 dB bandwidth (Rgmc = 875
)
Baseband selectivity @ 3.9 MHz
Baseband differential output VCM
Baseband output DC offset
RXI, RXQ DC and gain settle time
(note 1)
from initial RXEN input
at TDD rate > 250 Hz
Baseband HPF 3dB bandwidth (servo capacitors = 82 nF)
Baseband output voltage swing (peak differential)
Baseband output SNR (GC = 1.9 V)
50
0.97
pF
MHz
dB
V
mV
μ
s
0.65
60
1.0
VDD – 1.0
25
100
50
13
20
300
24
29
kHz
mV
dB
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