Philips Semiconductors
Product specification
High performance low power FM IF system
NE/SA604A
DESCRIPTION
PIN CONFIGURATION
The NE/SA604A 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 NE/SA604A features higher IF
bandwidth (25MHz) and temperature compensated RSSI and
limiters permitting higher performance application compared with the
NE/SA604. The NE/SA604A 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
14
13
12
11
IF AMP DECOUPLING
GND
IF AMP INPUT
IF AMP DECOUPLING
IF AMP OUTPUT
MUTE INPUT
V
GND
CC
RSSI OUTPUT
LIMITER INPUT
LIMITER DECOUPLING
MUTE AUDIO OUTPUT
FEATURES
10 LIMITER DECOUPLING
UNMUTE AUDIO OUTPUT
QUADRATURE INPUT
• Low power consumption: 3.3mA typical
9
LIMITER
• Temperature compensated logarithmic Received Signal Strength
Indicator (RSSI) with a dynamic range in excess of 90dB
SR00311
Figure 1. Pin Configuration
• Two audio outputs - muted and unmuted
• Low external component count; suitable for crystal/ceramic filters
APPLICATIONS
• Excellent sensitivity: 1.5µV across input pins (0.22µV into 50Ω
matching network) for 12dB SINAD (Signal to Noise and Distortion
ratio) at 455kHz
• Cellular radio FM IF
• High performance communications receivers
• SA604A meets cellular radio specifications
• Intermediate frequency amplification and detection up to 25MHz
• RF level meter
• Spectrum analyzer
• Instrumentation
• FSK and ASK data receivers
ORDERING INFORMATION
DESCRIPTION
TEMPERATURE RANGE
0 to +70°C
ORDER CODE
NE604AN
DWG #
SOT28-4
SOT109-1
SOT28-4
SOT109-1
16-Pin Plastic Dual In-Line Package (DIP)
16-Pin Plastic Small Outline (SO) package (Surface-mount)
16-Pin Plastic Dual In-Line Package (DIP)
0 to +70°C
NE604AD
-40 to +85°C
SA604AN
16-Pin Plastic Small Outline (SO) package (Surface-mount)
-40 to +85°C
SA604AD
ABSOLUTE MAXIMUM RATINGS
SYMBOL
PARAMETER
RATING
UNITS
V
V
CC
Single supply voltage
9
T
STG
Storage temperature range
-65 to +150
°C
Operating ambient temperature range NE604A
SA604A
0 to +70
-40 to +85
°C
°C
T
A
Thermal impedance
D package
N package
90
75
°C/W
°C/W
θ
JA
397
1994 Dec 15
853-1431 14477