RF105 Просмотр технического описания (PDF) - Conexant Systems
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RF105 Datasheet PDF : 12 Pages
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900 MHz Digital Spread Spectrum Transceiver
RF105
Specifications
Table 3. Electrical Specifications (1 of 3)
Note: TA = 25 °C, VCC = 3.6 V, fLO= 915 MHz
Parameter
Min
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
RX gain variation vs. frequency 902 MHz < fLO < 928 MHz
RX SSB noise figure:
High-gain mode, GC = 1.3 V
RX input IP3:
LNA high-gain mode, GC = 1.9 V
LNA low-gain mode, GC = 1.9 V
RX input P1dB:
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
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
VIH
Input low voltage, LNAATTN, RXEN
VIL
Input high current, RXEN
IIH
Input low current , RXEN
IIL
Input high current, LNAATTN
IIH
Input low current, LNAATTN
IIL
GC IIN
Baseband amplifier gain control range (GC = 1.3V – 1.9V)
GC input voltage range
Baseband amplifier gain control sensitivity
GC = 1.3–1.9 V
GC = 1.3 V
GC = 1.6 V
GC = 1.9 V
RX P1dB @ 3.9 MHz offset
LNA high gain, GC = 1.9 V
LNA low gain, GC = 1.9 V
Baseband output load capacitance
Baseband LPF 3 dB bandwidth (Rgmc = 875 Ω)
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)
99.5
77.5
37.5
–101
–79
–47
60
1.9
–25
–25
–500
60
1.2
0.65
60
1.0
13
Typical
105
82.5
38
19
0.5
6.5
–36
–15
–97
–74
–43
–22
–80
±1
0.5
125
67
1.6
0.04
0.14
0.13
–45
–14
20
0.82
70
50
20
300
24
Max
109.5
87.5
42.5
1
8.0
±5
3
0.75
200
60
500
75
2.0
0.17
50
0.97
VDD – 1.0
25
100
29
Units
dB
dB
dB
dBm
dBm
dB
dBm
deg
dB
V
µA
µA
µA
dB
V
dB/mV
dBm
pF
MHz
dB
V
mV
µs
kHz
mV
dB
W117, Rev. B
Conexant
7
September 28, 1999
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