Philips SA606 - Manual (Page 3)

Philips Semiconductors Product specification
SA606 Low-voltage high performance mixer FM IF system
1997 Nov 07 3
BLOCK DIAGRAM
20 19 18 17 16 15 14 13 12 11
10 9 8 7 6 5 4 3 2 1
RSSI
IF
AMP
E B
V REG
OSCILLATOR
LIMITER
MIXER
QUAD
+ – + –
AUDIO
SR00348
Figure 2. Block Diagram
DC ELECTRICAL CHARACTERISTICS
V
CC
= +3V, T
A
= 25
°
C; unless otherwise stated.
SYMBOL PARAMETER TEST CONDITIONS
LIMITS
UNITS SYMBOL PARAMETER TEST CONDITIONS
MIN TYP MAX
UNITS
V
CC
Power supply voltage range 2.7 7.0 V
I
CC
DC current drain 3.5 4.2 mA
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
Ω
and R18 = 3.3k Ω ; 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 TEST CONDITIONS
LIMITS
UNITS SYMBOL PARAMETER TEST CONDITIONS
MIN TYP MAX
UNITS
Mixer/Osc section (ext LO = 220mV
RMS
)
f
IN
Input signal frequency 150 MHz
f
OSC
Crystal oscillator frequency 150 MHz
Noise figure at 45MHz 6.2 dB
Third-order input intercept point (50 Ω
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
50
Ω
source +2.5 dB
RF input resistance Single-ended input 8 k Ω
RF input capacitance 3.0 4.0 pF
Mixer output resistance (Pin 20) 1.25 1.5 k Ω
IF section
IF amp gain 50 Ω source 44 dB
Limiter gain 50
Ω
source 58 dB
Input limiting -3dB, R
17a
= 2.4k, R
17b
= 3.3k Test at Pin 18 -109 dBm
AM rejection 80% AM 1kHz 45 dB
Audio level Gain of two (2k Ω AC load) 70 120 160 mV
SINAD sensitivity IF level -110dBm 17 dB