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參數(shù)資料
| 型號： | MC13xx |
| 廠商： | Motorola, Inc. |
| 英文描述： | CONVERTER, DC/DC, 1O/P, 5W, 3.3V; Power rating:5W; DC/DC Converter O/P type:Single; Voltage, input max:36V; Voltage, input min:9V; Voltage, output:3.3V; Depth, external:10.2mm; Length / Height, external:31.8mm; Width, RoHS Compliant: Yes |
| 中文描述： | 通用窄帶調(diào)頻接收器集成電路 |
| 文件頁數(shù)： | 31/68頁 |
| 文件大?。?/td> | 1316K |
| 代理商： | MC13XX |
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MC13110A/B MC13111A/B
31
MOTOROLA ANALOG IC DEVICE DATA
RF System Performance
The sensitivity of the IC is typically 0.4
μ
Vrms matched
(single ended or differential) with no preamp. To achieve
suitable system performance, a preamp and passive
duplexer may be used. In production final test, each section
of the IC is separately tested to guarantee its system
performance in the specific application. The preamp and
duplexer (differential, matched input) yields typically
–115 dBm @ 12 dB SINAD sensitivity performance under full
duplex operation. See Figure 45 and 48.
The duplexer is important to achieve full duplex operation
without significant “de–sensing” of the receiver by the
transmitter. The combination of the duplexer and preamp
circuit should attenuate the transmitter power to the receiver
by over 60 dB. This will improve the receiver system noise
figure without giving up too much IMD performance.
The duplexer may be a two piece unit offered by Shimida,
Sansui, or Toko products (designed for 25 channel CT–0
cordless phone). The duplexer frequency response at the
receiver port has a notch at the transmitter frequency band of
about 35 to 40 dB with a 2.0 to 3.0 dB insertion loss at the
receiver frequency band.
The preamp circuit utilizes a tuned transformer at the
output side of the amplifier. This transformer is designed to
bandpass filter at the receiver input frequency while rejecting
the transmitter frequency. The tuned preamp also improves
the noise performance by reducing the bandwidth of the pass
band and by reducing the second stage contribution of the
1st mixer. The preamp is biased such that it yields suitable
noise figure and gain.
The following matching networks have been used to
obtain 12 dB SINAD sensitivity numbers:
1:5
15
1:5
15
Figure 60. Matching Input Networks
Differential Match
360
Single–ended Match
680
Single–ended 50
Mix1 In1
Mix1 In2
Mix1 In1
Mix1 In2
Mix1 In1
Mix1 In2
RF In1
RF In1
RF In1
39
39
49.9
0.01
0.01
The exact impedance looking into the RF In1 pin is
displayed in the following table along with the sensitivity
levels.
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Handset Application Channel 21
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–115.3
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á
á
(dBm)
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á
á
(dBm)
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Input
Single–ended match
–114.8
50.2
±
0.1j
Single–ended 50
–100.1
50.2
±
0.1j
The graphs in Figures 64 to 69 are performance results
based on Evaluation Board Schematic (Figure 138). This
evaluation board did not use a duplexer or preamp stage.
Figure 62 is a summary of the RF performance and Figure 63
contains the French RF Performance Summary.
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Parameter
Handset
Baseset
Unit
Sensitivity at
12 dB SINAD
–100.1
–100.1
dBm
Recovered Audio
132
132
mVrms
SINAD @ –30 dBm
41.8
41.4
dB
THD @ –30 dBm
0.8
0.8
%
S/N @ –30 dBm
78.2
78.5
dB
AMRR @ –30 dBm
73.4
72.2
dB
RSSI range
>80
>80
dB
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MC13110A/MC13111A (fdev = 1.5 kHz, fmod = 1.0 kHz, 50
)
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Figure 63. RF Performance Summary
Parameter
Handset
Baseset
Unit
Sensitivity at
12 dB SINAD
–91
–90.8
dBm
Recovered Audio
89.8
90
mVrms
SINAD @ –30 dBm
42.1
44.3
dB
THD @ –30 dBm
0.8
0.8
%
S/N @ –30 dBm
75.7
75.1
dB
AMRR @ –30 dBm
56
84.7
dB
RSSI range
>80
>80
dB
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