SA617 View Datasheet(PDF) - Philips Electronics
Part Name
Description
Manufacturer
SA617 Datasheet PDF : 17 Pages
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Philips Semiconductors
Low-voltage high performance mixer FM IF system
Product specification
SA617
AC ELECTRICAL CHARACTERISTICS
TA = 25°C; VCC = +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 NO TAG. 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
SYMBOL
PARAMETER
TEST CONDITIONS
SA617
UNITS
MIN
TYP MAX
Mixer/Osc section (ext LO = 220mVRMS)
fIN
Input signal frequency
fOSC
Crystal oscillator frequency
Noise figure at 45MHz
150
MHz
150
MHz
6.8
dB
Third–order input intercept point (50Ω
source)
f1 = 45.0; f2 = 45.06MHz
Input RF Level = –52dBm
–9
dBm
Conversion power gain
Matched 14.5dBV step–up
11.0
17
dB
50Ω source
+2.5
dB
RF input resistance
Single–ended input
8
kΩ
RF input capacitance
3.0
4.0
pF
Mixer output resistance
(Pin 20)
1.25
1.5
kΩ
IF section
IF amp gain
50Ω source
44
dB
Limiter gain
50Ω source
58
dB
Input limiting –3dB, R17 = 2.4k
AM rejection
Test at Pin 18
80% AM 1kHz
–105
40
dBm
dB
Audio level
Gain of two (2kΩ AC load)
60
114
mV
SINAD sensitivity
RF level –110dB
13
dB
THD Total harmonic distortion
–30
–45
dB
S/N
Signal–to–noise ratio
IF RSSI output, R9 = 2kΩ1
No modulation for noise
IF level = –118dBm
IF level = –68dBm
62
dB
0.3
0.8
V
.70
1.1
2.0
V
IF level = –23dBm
1.0
1.8
2.5
V
RSSI range
80
dB
RSSI accuracy
+2.0
dB
IF input impedance
1.3
1.5
kΩ
IF output impedance
0.3
kΩ
Limiter input impedance
1.30
1.5
kΩ
Limiter output impedance
(Pin 11)
200
Ω
Limiter output level
(Pin 11) No load
2.4kΩ load
130
115
mVRMS
Frequency Check/limiter output impedance (Pin 9)
200
Ω
Frequency Check/limiter output level
(Pin 9) No load
2.4kΩ load
130
115
mVRMS
RF/IF section (int LO)
Audio level
System RSSI output
System SINAD sensitivity
3V = VCC, RF level = –27dBm
3V = VCC, RF level = –27dBm
RF level = –117dBm
240
mVRMS
2.2
V
12
dB
NOTE:
1. The generator source impedance is 50Ω, but the SA617 input impedance at Pin 18 is 1500Ω. As a result, IF level refers to the actual signal
that enters the SA617 input (Pin 18) which is about 21dB less than the “available power” at the generator.
1997 Nov 07
4
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