RF212 查看數據表（PDF） - Conexant Systems
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RF212 Datasheet PDF : 9 Pages
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RF212
Image-Reject Front End
Table 7. RF212 Electrical Specifications (3 of 3)
(TA = 25 °C, Vcc = 2.7 V, fIF = 400 MHz, Plo = −10 dBm)
Parameter
Symbol
Test Condition
PCS1900 Mode (for tri-band device only) (continued)
Input 1 dB compression point
high gain mode
low gain mode
Input third order intercept point
Differential IF shunt output resistance
Image rejection:
fIF = 400 MHz
fIF = 350 or 450 MHz
Local Oscillator (LO)
LO frequency
LO input return loss (with external matching circuit)
fIF = 400 MHz
LO input power
PLO
Control Signals (All Modes)
Digital input voltages (ENA, GAINSEL, BANDSEL1,
VIH
BANDSEL2, and STEPSEL)
VIL
Enable time
tON
Bandselect switching time
Note 1: Assumes −5 dBm @ 915 MHz blocker at the antenna input attenuated by 17 dB.
Note 2: Assumes −12 dBm @ 1785 MHz blocker at the antenna input attenuated by 10 dB.
Note 3: Assumes −12 dBm @ 1910 MHz blocker at the antenna input attenuated by 10 dB.
Min Typical Max
−23
–20
−20
–16
−12
2
35
40
25
1275
1640
−10
−15
−10
−5
Vcc –
0.4
0.4
10
15
Units
dBm
dBm
dBm
kΩ
dB
dB
MHz
dB
dBm
V
V
µs
µs
Vcc
10
10
2000
GAINSEL
22 pF
EGSM Rx filter
12 nH
47pF
LNA900IN
4
DCS Rx Filter
12 pF
3.0 nH
LNA1800IN
1.5 pF
8
PCS Rx Filter
2000
1.2 pF
3.0 nH
LNA1900IN
9
22 pF
ENABLE
10
22 pF
7
5
6
10 pF
2.2 F
20
L1
82 nH
L2
82 nH
Control
Bias
2
3
12
19
IFOUT+
17
16 IFOUT-
100 pF
100 pF
to
IF SAW
match
BANDSEL1
14
22 pF
BANDSEL2
15
STEPSEL
18
LOIN
13
2000
2000
22 pF
27 pF
4.7 nH
2000
Figure 3. Typical RF212 Application Circuit
(for dual-band device, ground pins 9 and 15)
2 K || (L1+L2)
differential
C903
6
May 24, 2000
Conexant
Proprietary Information and Specifications are Subject to Change
100780D
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