Philips Semiconductors Product specification
SA606Low-voltage high performance mixer FM IF system
1997 Nov 07 3
BLOCK DIAGRAM
20 19 18 17 16 15 14 13 12 11
10987654321
RSSI
IF
AMP
EB
V
REG
OSCILLATOR
LIMITER
MIXER
QUAD
+– +–
AUDIO
SR00348
Figure 2. Block Diagram
DC ELECTRICAL CHARACTERISTICS
VCC = +3V, TA = 25°C; unless otherwise stated.
SYMBOL
PARAMETER
TESTCONDITIONS
LIMITS
UNITS
SYMBOL
PARAMETER
TEST
CONDITIONS
MIN TYP MAX
UNITS
VCC Power supply voltage range 2.7 7.0 V
ICC DC current drain 3.5 4.2 mA
AC ELECTRICAL CHARACTERISTICS
TA = 25°C; VCC = +3V, unless otherwise stated. RF frequency = 45MHz + 14.5dBV RF input step-up; IF frequency = 455kHz; R17 = 2.4kΩ
and R18 = 3.3kΩ; RF level = -45dBm; FM modulation = 1kHz with ±8kHz peak deviation. Audio output with de-emphasis filter and C-message
weighted filter. Test circuit Figure 3. 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.
SYMBOL
PARAMETER
TESTCONDITIONS
LIMITS
UNITS
SYMBOL
PARAMETER
TEST
CONDITIONS
MIN TYP MAX
UNITS
Mixer/Osc section (ext LO = 220mVRMS)
fIN Input signal frequency 150 MHz
fOSC Crystal oscillator frequency 150 MHz
Noise figure at 45MHz 6.2 dB
Third-order input intercept point (50Ω
source) f1 = 45.0; f2 = 45.06MHz
Input RF level = -52dBm -9 dBm
Conversion voltage gain Matched 14.5dBV step-up 13.5 17 19.5 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, R17a = 2.4k, R17b = 3.3k Test at Pin 18 -109 dBm
AM rejection 80% AM 1kHz 45 dB
Audio level Gain of two (2kΩ AC load) 70 120 160 mV
SINAD sensitivity IF level -110dBm 17 dB