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| 型號(hào)： | MC2800 |
| 廠商： | Motorola, Inc. |
| 英文描述： | FSK FM IF Receiver(FSK FM IF 接收器) |
| 中文描述： | FSK信號(hào)調(diào)頻（FSK信號(hào)調(diào)頻中頻接收器中頻接收機(jī)） |
| 文件頁(yè)數(shù)： | 4/28頁(yè) |
| 文件大小： | 473K |
| 代理商： | MC2800 |
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MC2800
4
MOTOROLA RF/IF DEVICE DATA
AC ELECTRICAL CHARACTERISTICS
(continued)
(VCC = 1.1 V, VDD = 1.1 V, TA = 25
°
C, unless otherwise noted.)
Characteristics
Condition
Unit
Max
Typ
Min
Symbol
OSCILLATOR
(RF Pwr @ 1.0 V)
Input Impedance (DC)
@ Osc B
Rin
–
15
–
k
Signal Level at Osc B
–
VOsc B
–
300
–
mVpp
IF AMP
(First IF Amplifier)
Gain
VCC = 1.1 V;
455 kHz;
AC Coupling
1 1 V
1 1 V
GIF1
BW
–
45
–
dB
Bandwidth
–
25
–
kHz
Noise Figure
NF
–
18
–
dB
I/P Impedance
–
–
1.5
–
k
O/P Impedance
–
–
1.5
–
k
1.0 dB Compression
–
–
–70
–
dBm
IF AMP
(Second IF Amplifier)
Gain
VCC = 1.1 V;
455 kHz;
AC Coupling
GIF2
–
–
69
–
dB
I/P Impedance
–
1.5
–
k
Output Level
Lim Op
–
5.0
10
mVpp
RSSI
Dynamic Range
–
–
40
–
–
dB
Output Impedance
@ RSSI
Rrs
Vrs
Vrs
–
50
–
k
RSSI Output Voltage
–
0
–
VCC
–
V
RSSI Output Slope
@ RFin = –80 dBm
–
18
mV/dB
OVERALL WITH DETECTOR
(@ BRF Out)
12 dB Sensitivity (SINAD)
–
SINAD
–
–112
–
dBm
Recovered Audio
–
Vau
Vno
–
300
–
mVpp
Noise Output Level
Input Carrier Only
–
10
–
mVrms
CHARGE TIME
Charge Time (See Figure 4)
CL = “L” to “H”
EN = “H”
tch
–
5.0
6.0
ms
DATA COMPARATORS
(D1, D2)
Rise and Fall Time
fin = 600 Hz
D1, D2
tr, tf
–
–
5.0
10
μ
s
Duty Cycle
–
50
–
%
Output High Voltage
RL = 100 k
RL = 100 k
Voh1
Vol1
VDD – 0.3
–
–
–
V
Output Low Voltage
–
0.2
V
BIT RATE LOW PASS FILTER CUT–OFF FREQUENCY
Cut–Off Frequency 1 (512 bps) [Note]
(R1, R2) = (0, 0)
fcl1
fcl2
fcl3
fcl4
350
410
480
Hz
Cut–Off Frequency 2 (1200 bps) [Note]
(R1, R2) = (1, 0)
820
960
1100
Hz
Cut–Off Frequency 3 (1600 bps) [Note]
(R1, R2) = (1, 1)
1100
1280
1480
Hz
Cut–Off Frequency 4 (3200 bps) [Note]
(R1, R2) = (0, 1)
2180
2560
2950
Hz
NOTE:
Cut–off frequency is depending on the two external capacitors connected between BRF1, BRF Out, BRF2 and ground. The respective values are
2.2 nF
±
1% and 22 nF
±
1%.
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