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參數(shù)資料
| 型號： | 935166750118 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 通信及網(wǎng)絡(luò) |
| 英文描述： | SPECIALTY TELECOM CIRCUIT, PDSO20 |
| 封裝： | PLASTIC, SOT-266-1, SSOP-20 |
| 文件頁數(shù)： | 5/20頁 |
| 文件大?。?/td> | 239K |
| 代理商： | 935166750118 |
Philips Semiconductors
Product specification
SA636
Low voltage high performance mixer FM IF system
with high-speed RSSI
1997 Nov 07
13
Table 1.
DECT Application Circuit Electrical Characteristics
RF frequency = 110.592MHz; IF frequency = 9.8MHz; RF level = -45dBm; FM modulation = 100kHz with
±288kHz peak deviation.
SYMBOL
PARAMETER
TEST CONDITIONS
TYPICAL
UNITS
Mixer/Osc section (ext LO = 160mVRMS)
PG
Conversion power gain
13
dB
NF
Noise Figure at 110MHz
12
dB
IIP3
Third order input intercept
Matched f1 = 110.592; f2 = 110.892MHz
-15
dBm
RIN
RF input resistance
690
CIN
RF input capacitance
3.6
pF
IF section
IF amp gain
330
load
38
dB
Limiter amp gain
330
load
54
dB
Data level
RLOAD = 3k
130
mVRMS
3dB data bandwidth
700
kHz
RF/IF section (internal LO)
System RSSI output
RF level = -10dBm
1.4
V
System S/N1
RF level = -83dBm
10
dB
NOTE:
1. 10dB S/N corresponds to BER = 10-3.
RF GENERATOR
SPECTRUM
ANALYZER
SCOPE
DC VOLTMETER
110.592MHz
RSSI
DATA
SA636 DEMO BOARD
LO / GENERATOR
120.392MHz
VCC = 3V
SR00502
Figure 11. SA636 Application Circuit Test Set Up
NOTES:
1. RF generator: Set your RF generator at 110.592MHz, use a 100kHz modulation frequency and a
±288kHz deviation.
2. Layout: The layout is very critical in the performance of the receiver. We highly recommend our demo board layout.
3. RSSI: The smallest RSSI voltage (i.e., when no RF input is present and the input is terminated) is a measure of the quality of the layout and
design. If the lowest RSSI voltage is 500mV or higher, it means the receiver is in regenerative mode. In that case, the receiver sensitivity
will be worse than expected.
4. Supply bypass and shielding: All of the inductors, the quad tank, and their shield must be grounded. A 0.1
F bypass capacitor on the
supply pin improves sensitivity.
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