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參數(shù)資料
| 型號： | SA608N |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 調(diào)諧器 |
| 英文描述： | Low voltage high performance mixer FM IF system |
| 中文描述： | 1-BAND, AUDIO TUNER, PDIP20 |
| 封裝： | PLASTIC, DIP-20 |
| 文件頁數(shù)： | 3/14頁 |
| 文件大?。?/td> | 178K |
| 代理商： | SA608N |
Philips Semiconductors RF Communications Products
Product specification
SA608
Low voltage high performance mixer FM IF system
November 3, 1992
4
AC ELECTRICAL CHARACTERISTICS
T
A
= 25
°
C; V
CC
= +3V, unless otherwise stated. RF frequency = 45MHz + 14.5dBV RF input step-up; IF frequency = 455kHz; R17 = 2.4k; R18
= 3.3k; RF level = –45dBm; FM modulation = 1kHz with
±
8kHz peak deviation. Audio output with de-emphasis filter and C-message weighted
filter. Test circuit 1. The parameters listed below are tested using automatic test equipment to assure consistent electrical characterristics. The
limits do not represent the ultimate performance limits of the device. Use of an optimized RF layout will improve many of the listed parameters.
LIMITS
SA608
TYP
SYMBOL
PARAMETER
TEST CONDITIONS
UNITS
MIN
MAX
Mixer/Osc section (ext LO = 220mV
RMS
)
f
IN
Input signal frequency
f
OSC
Crystal oscillator frequency
Noise figure at 45MHz
Third–order input intercept point (50
source)
Conversion power gain
150
150
6.2
MHz
MHz
dB
f1 = 45.0; f2 = 45.06MHz
Input RF Level = –52dBm
Matched 14.5dBV step–up
50
source
Single–ended input
–9
dBm
13.5
17
+2.5
8
3.0
1.5
19.5
dB
dB
k
pF
k
RF input resistance
RF input capacitance
Mixer output resistance
4.0
(Pin 20)
1.25
IF section
IF amp gain
Limiter gain
Input limiting –3dB, R
17
= 2.4k
AM rejection
Audio level
2
SINAD sensitivity
Total harmonic distortion
Signal–to–noise ratio
IF RSSI output, R
9
= 2k
1
50
source
50
source
Test at Pin 18
80% AM 1kHz
44
58
–109
45
60
17
–50
62
0.3
1.1
1.8
90
+1.5
1.5
0.3
1.5
200
130
115
200
130
115
dB
dB
dBm
dB
mV
dB
dB
dB
V
V
V
dB
dB
k
k
k
35
80
RF level –110dB
THD
S/N
–35
No modulation for noise
IF level = –118dBm
IF level = –68dBm
IF level = –23dBm
0.8
1.80
2.5
.70
1.2
RSSI range
RSSI accuracy
IF input impedance
IF output impedance
Limiter input impedance
Limiter output impedance
1.3
1.30
(Pin 11)
(Pin 11) no load
Limiter output level
5k
load
mV
RMS
Frequency check/lim (–) output impedance
(Pin 9)
(Pin 9)
Frequency check/lim (–) output level
no load
5k
load
mV
RMS
RF/IF section (int LO)
Audio level
System RSSI output
System SINAD sensitivity
3V = V
CC
, RF level = –27dBm
3V = V
CC
, RF level = –27dBm
RF level = –117dBm
120
2.2
12
mV
RMS
V
dB
NOTE:
1. The generator source impedance is 50
, but the SA608 input impedance at Pin 18 is 1500
. As a result, IF level refers to the actual signal
that enters the SA608 input (Pin 18) which is about 21dB less than the “available power” at the generator.
2. By using 45k
load across the Quad detector coil, you will have Audio output at 115mV with –42dB distortion.
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