SA624D 查看數據表（PDF） - Philips Electronics
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SA624D Datasheet PDF : 15 Pages
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Philips Semiconductors
High performance low power FM IF system with
high-speed RSSI
Product specification
SA624
DESCRIPTION
The SA624 is pin-to-pin compatible with the SA604A, but has faster
RSSI rise and fall time. The SA624 is an improved monolithic
low-power FM IF system incorporating two limiting intermediate
frequency amplifiers, quadrature detector, muting, logarithmic
received signal strength indicator, and voltage regulator. The SA624
features higher IF bandwidth (25MHz) and temperature
compensated RSSI and limiters permitting higher performance
application compared with the SA604. The SA624 is available in
16-lead SO (surface-mounted miniature) package.
FEATURES
• Low power consumption: 3.4mA typical
• Temperature compensated logarithmic Received Signal Strength
Indicator (RSSI) with a dynamic range in excess of 90dB
• Fast RSSI rise and fall time
• Two audio outputs - muted and unmuted
• Low external component count; suitable for crystal/ceramic filters
• Excellent sensitivity: 1.5µV across input pins (0.22µV into 50Ω
matching network) for 12dB SINAD (Signal to Noise and Distortion
ratio) at 455kHz
• SA624 meets cellular radio specifications
PIN CONFIGURATION
D Package
IF AMP DECOUPLING 1
GND 2
MUTE INPUT 3
VCC 4
RSSI OUTPUT 5
MUTE AUDIO OUTPUT 6
UNMUTE AUDIO OUTPUT 7
QUADRATURE INPUT 8
16 IF AMP INPUT
15 IF AMP DECOUPLING
14 IF AMP OUTPUT
13 GND
12 LIMITER INPUT
11 LIMITER DECOUPLING
10 LIMITER DECOUPLING
9 LIMITER
Figure 1. Pin Configuration
SR00440
APPLICATIONS
• Digital cellular base station
• Cellular radio FM IF
• High performance communications receivers
• Intermediate frequency amplification and detection up to 25MHz
• RF level meter
• Spectrum analyzer
• Instrumentation
• FSK and ASK data receivers
ORDERING INFORMATION
DESCRIPTION
16-Pin Plastic Small Outline (SO) package (Surface-mount)
TEMPERATURE RANGE
-40 to +85°C
ORDER CODE
SA624D
DWG #
SOT109-1
ABSOLUTE MAXIMUM RATINGS
SYMBOL
PARAMETER
VCC
TSTG
Single supply voltage
Storage temperature range
TA
Operating ambient temperature range SA624
θJA
Thermal impedance
D package
RATING
9
-65 to +150
-40 to +85
90
UNITS
V
°C
°C
°C/W
1997 Nov 07
2
853-1647 18664
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