SA639 PDF даташит
Спецификация SA639 изготовлена «Philips» и имеет функцию, называемую «Low voltage mixer FM IF system with filter amplifier and data switch». |
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Детали детали
Номер произв | SA639 |
Описание | Low voltage mixer FM IF system with filter amplifier and data switch |
Производители | Philips |
логотип |
16 Pages
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INTEGRATED CIRCUITS
SA639
Low voltage mixer FM IF system with
filter amplifier and data switch
Product specification
IC17 Data Handbook
1998 Feb 10
Philips
Semiconductors
No Preview Available ! |
Philips Semiconductors
Low voltage mixer FM IF system with filter amplifier
and data switch
Product specification
SA639
DESCRIPTION
The SA639 is a low-voltage high performance monolithic FM IF
system with high-speed RSSI incorporating a mixer/oscillator, two
wideband limiting intermediate frequency amplifiers, quadrature
detector, logarithmic received signal strength indicator (RSSI), fast
RSSI op amps, voltage regulator, wideband data output, post
detection filter amplifier and data switch. The SA639 is available in
24-lead TSSOP (Thin shrink small outline package).
The SA639 was designed for high bandwidth portable
communication applications and will function down to 2.7V. The RF
section is similar to the famous NE605. The data output provides a
minimum bandwidth of 1MHz to demodulate wideband data. The
RSSI output is amplified and has access to the feedback pin. This
enables the designer to level adjust the outputs or add filtering.
The post-detection amplifier may be used to realize a low pass filter
function. A programmable data switch routes a portion of the data
signal to an external integration circuit that generates a data
comparator reference voltage.
SA639 incorporates a power down mode which powers down the
device when Pin 8 is high. Power down logic levels are CMOS and
TTL compatible with high input impedance.
APPLICATIONS
• DECT (Digital European Cordless Telephone)
• FSK and ASK data receivers
FEATURES
• VCC = 2.7 to 5.5V
• Low power consumption: 8.6mA typ at 3V
• Wideband data output (1MHz min.)
• Fast RSSI rise and fall times
• Mixer input to >500MHz
• Mixer conversion power gain of 9.2dB and noise figure of 11dB at
110MHz
ORDERING INFORMATION
DESCRIPTION
24-Pin Plastic TSSOP (Thin Shrink Small Outline Package)
PIN CONFIGURATION
RFIN 1
RF BYPASS 2
XTAL OSC (EMITTER) 3
XTAL OSC (BASE)
VCC
RSSI FEEDBACK
4
5
6
RSSI OUT 7
POWER DOWN CONTROL
DATA OUT
8
9
POSTAMP IN
POSTAMP OUT
SWITCH CONTROL
10
11
12
24 MIXER OUT
23 IF AMP DECOUPLING
22 IF AMP IN
21 IF AMP DECOUPLING
20 IF AMP OUT
19 GND
18 LIMITER IN
17 LIMITER DECOUPLING
16 LIMITER DECOUPLING
15 LIMITER OUT
14 QUADRATURE IN
13 SWITCH OUT
Figure 1. Pin Configuration
SR00030
• XTAL oscillator effective to 150MHz (L.C. oscillator to 1GHz local
oscillator can be injected)
• 92dB of IF Amp/Limiter power gain
• 25MHz limiter small signal bandwidth
• Temperature compensated logarithmic Received Signal Strength
Indicator (RSSI) with a dynamic range in excess of 80dB
• RSSI output internal op amp
• Post detection amplifier for filtering
• Programmable data switch
• Excellent sensitivity: 2.24µV into 50Ω matching network for 10dB
SNR (Signal to Noise Ratio) with RF at 110MHz and IF at 9.8MHz
• ESD hardened
• Power down mode
TEMPERATURE RANGE ORDER CODE
-40 to +85°C
SA639DH
DWG #
SOT-355
1998 Feb 10
2 853-1792 18944
No Preview Available ! |
Philips Semiconductors
Low voltage mixer FM IF system with filter amplifier
and data switch
Product specification
SA639
BLOCK DIAGRAM
24 23 22 21
20 19 18 17 16 15
14 13
MIXER
IF
AMP
OSCILLATOR
GND
LIMITER
FAST
RSSI
QUAD
VCC
–+
PWR
DWN
+–
+–
EB
RSSI
DATA
1 2 3 4 5 6 7 8 9 10 11 12
Figure 2. Block Diagram
SR00031
ABSOLUTE MAXIMUM RATINGS
SYMBOL
PARAMETER
VCC Single supply voltage
VIN Voltage applied to any other pin1
TSTG
TA
Storage temperature range
Operating ambient temperature range SA6392
NOTE:
1. Except logic input pins (Pins 8 and 12) which can have 6V maximum.
2. θJA Thermal impedance (DH package) 117°C/W
RATING
-0.3 to 6
-0.3 to (VCC+0.3)
-65 to +150
-40 to +85
UNITS
V
V
°C
°C
DC ELECTRICAL CHARACTERISTICS
VCC = +3V, TA = 25°C; unless otherwise stated.
SYMBOL
PARAMETER
TEST CONDITIONS
VCC Power supply voltage range
ICC DC current drain
ICC Standby
Input current
Input level
tON Power up time
tOFF Power down time
Power up settling time
Pin 8 = LOW, Pin 12 = HIGH
Pin 8 = HIGH, Pin 12 = HIGH
Pin 8 = LOW
Pin 8 = HIGH
Pin 8 = LOW
Pin 8 = HIGHNO TAG
RSSI valid (10% to 90%)
RSSI invalid (90% to 10%)
Data output valid
MIN
2.7
0
0.7VCC
-3σ
8.33
131.9
LIMITS
SA639
TYP
3.0
8.6
140
10
5
100
+3σ
8.87
148.1
MAX
5.5
10
500
10
4
0.3VCC
6
200
UNITS
V
mA
µA
µA
V
µs
µs
µs
Switch closed
Switch open (output tri-state)
Input current
Pin 12 = LOW, PIN 8 = LOW
Pin 12 = HIGH
Pin 12 = LOW
Pin 12 = HIGH
0
0.7 VCC
0.3 VCC
6
10
4
V
V
µA
Switch activation time
0.5 1 µs
NOTE:
1. When the device is forced in power down mode via Pin 8, the Data Switch will output a voltage close to 1.6V and the state of the switch
control input will have no effect.
1998 Feb 10
3
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