
Philips Semiconductors RF Communications Products
Product specification
SA637
Low-voltage digital IF receiver
October 27, 1993
3
ABSOLUTE MAXIMUM RATINGS
SYMBOL
V
CC
Supply voltage
V
IN
Voltage applied to any other pin
T
STG
Storage temperature range
T
A
Operating ambient temperature range
NOTE:
Thermal impedance (
θ
JA
) = 117
°
C/W
PARAMETER
RATING
-0.3 to +6.0
-0.3 to (V
CC
+ 0.3)
-65 to +150
-40 to +85
UNITS
V
V
°
C
°
C
DC ELECTRICAL CHARACTERISTICS
V
CC
= +3V, T
A
= 25
°
C; unless otherwise stated.
SYMBOL
PARAMETER
TEST CONDITIONS
LIMITS
TYP
UNITS
MIN
2.7
MAX
5.5
4.5
5.5
0.5
10
10
0.3V
CC
V
CC
V
CC
I
CC
Power supply voltage range
DC current drain
V
Pin 9 = HIGH or OPEN
V
CC
= 4.7V
Pin 9 = LOW
Pin 9 = LOW
Pin 9 = HIGH
Pin 9 = LOW
Pin 9 = HIGH
RSSI valid (10% to 90%)
RSSI invalid (90% to 10%)
3.8
4.4
0.11
mA
mA
mA
μ
A
μ
A
μ
A
μ
A
μ
s
μ
s
Standby
Input current
-10
-10
0
Input level
0.7V
CC
t
ON
t
OFF
Power up time
Power down time
10
5
AC ELECTRICAL CHARACTERISTICS
T
A
= 25
°
C; V
CC
= +3V, unless otherwise stated. RF frequency = 90MHz; RF input step-up = +14.5dBV; IF frequency = 455kHz; RF level =
-68dBm. Test circuit Figure 1. The parameters listed below are tested using automatic test equipment to assure consistent electrical
characteristics. 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
TYP
UNITS
MIN
MAX
Mixer/Osc section
f
IN
f
OSC
NF
TOI
P1dB
Input signal frequency
Crystal oscillator frequency
Noise figure at 90MHz
Third-order input intercept point
Input 1dB compression point
Conversion power gain
Mixer input resistance
Mixer input capacitance
Mixer output resistance
Buffered LO output level
200
200
6.2
-17
-27
7
2.5
2.2
1.87
300
MHz
MHz
dB
dBm
dBm
dB
k
pF
k
mV
P-P
Matched input and output
Input matched to 50
source
Matched 50
R
IN
C
IN
R
OUT
LO = 447mV
P-P
, 1k
AC load
100
500
IF section
IF amp power gain
Limiter power gain
IF amp bandwidth
50
source
50
source
36
60
2.5
dB
dB
MHz
IF
BW