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參數(shù)資料
| 型號： | MC13156DW |
| 廠商： | MOTOROLA INC |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | WIDEBAND FM IF SYSTEM FOR DIGITAL AND ANALOG APPLICATIONS |
| 中文描述： | TELECOM, CORDLESS, RF AND BASEBAND CIRCUIT, PDSO24 |
| 封裝： | PLASTIC, SO-24 |
| 文件頁數(shù)： | 17/20頁 |
| 文件大?。?/td> | 446K |
| 代理商： | MC13156DW |
MC13156
17
MOTOROLA RF/IF DEVICE DATA
BER TESTING AND PERFORMANCE
Description
The test setup shown in Figure 29 is configured so that the
function generator supplies a 100 kHz clock source to the bit
error rate tester. This device generates and receives a
repeating data pattern and drives a 5 pole baseband data
filter. The filter effectively reduces harmonic content of the
baseband data which is used to modulate the RF generator
which is running at 144.45 MHz. Following processing of the
signal by the receiver (MC13156), the recovered baseband
sinewave (data) is AC coupled to the data slicer. The data
slicer is essentially an auto–threshold comparator which
tracks the zero crossing of the incoming sinewave and
provides logic level data at its ouput. Data errors associated
with the recovered data are collected by the bit error rate
receiver and displayed.
Bit error rate versus RF signal input level and IF filter
bandwidth are shown in Figure 28. The bit error rate data was
taken under the following test conditions:
Data rate = 100 kbps
Filter cutoff frequency set to 39% of the data rate or 39 kHz.
Filter type is a 5 pole equal–ripple with 0.5
°
phase error.
VCC = 4.0 Vdc
Frequency deviation =
±
32 kHz.
–90
Figure 28. Bit Error Rate versus RF
Input Signal Level and IF Bandpass Filter
RF INPUT SIGNAL LEVEL (dBm)
–85
–80
–75
–70
B
10–1
10–5
10–7
10–3
IF Filter BW
110 kHz
IF Filter BW
230 kHz
VCC = 4.0 Vdc
Data Pattern = 2E09 Prbs NRZ
Baseband Filter fc = 50 kHz
fdev =
±
32 kHz
Evaluation PC Board
The evaluation PCB is very versatile and is intended to be
used across the entire useful frequency range of this device.
The center section of the board provides an area for
attaching all SMT components to the circuit side and radial
leaded components to the component ground side (see
Figures NO TAG and NO TAG). Additionally, the peripheral
area surrounding the RF core provides pads to add
supporting and interface circuitry as a particular application
dictates.
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| MC13156FB | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:WIDEBAND FM IF SYSTEM FOR DIGITAL AND ANALOG APPLICATIONS |
| MC13158 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:WIDEBAND FM IF SUBSYSTEM FOR DECT AND DIGITAL APPLICATIONS |
| MC13158FTB | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:WIDEBAND FM IF SUBSYSTEM FOR DECT AND DIGITAL APPLICATIONS |
| MC13159 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:WIDEBAND FM IF SUBSYSTEM FOR PHS AND DIGITAL APPLICATIONS |
| MC13159DTB | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:WIDEBAND FM IF SUBSYSTEM FOR PHS AND DIGITAL APPLICATIONS |
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