Philips Semiconductors
Product specification
Low power FM IF system
SA614A
DESCRIPTION
PIN CONFIGURATION
The SA614A 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 SA614A features higher IF
bandwidth (25MHz) and temperature compensated RSSI and
limiters permitting higher performance application compared with the
SA604. The SA614A is available in a 16-lead dual-in-line plastic
and 16-lead SO (surface-mounted miniature) package.
D and N Packages
1
2
3
4
5
6
7
8
16
15
IF AMP DECOUPLING
GND
IF AMP INPUT
IF AMP DECOUPLING
14 IF AMP OUTPUT
MUTE INPUT
13
V
GND
CC
RSSI OUTPUT
12 LIMITER INPUT
11
10
9
MUTE AUDIO OUTPUT
LIMITER DECOUPLING
LIMITER DECOUPLING
FEATURES
UNMUTE AUDIO OUTPUT
QUADRATURE INPUT
• Low power consumption: 3.3mA typical
LIMITER
• Temperature compensated logarithmic Received Signal Strength
SR00323
Indicator (RSSI) with a dynamic range in excess of 90dB
Figure 1. Pin Configuration
• Two audio outputs - muted and unmuted
• Low external component count; suitable for crystal/ceramic filters
APPLICATIONS
• Cellular radio FM IF
• Excellent sensitivity: 1.5µV across input pins (0.22µV into 50Ω
matching network) for 12dB SINAD (Signal to Noise and Distortion
ratio) at 455kHz
• High performance communications receivers
• Intermediate frequency amplification and detection up to 25MHz
• RF level meter
• SA614A meets cellular radio specifications
• Spectrum analyzer
• Instrumentation
• FSK and ASK data receivers
ORDERING INFORMATION
DESCRIPTION
TEMPERATURE RANGE
-40 to +85°C
ORDER CODE
SA614AN
DWG #
SOT38-4
SOT109-1
16-Pin Plastic Dual In-Line Package (DIP)
16-Pin Plastic Small Outline (SO) package (Surface-mount)
-40 to +85°C
SA614AD
2
1997 Nov 07
853-0594 18663
NXP [ NXP ]
