Philips SA615 - Manual (Page 2)

Philips Semiconductors Product specification
SA615 High performance low power mixer FM IF system
2 1997 Nov 07 853-1402 18665
DESCRIPTION
The SA615 is a high performance monolithic low-power FM IF
system incorporating a mixer/oscillator, two limiting intermediate
frequency amplifiers, quadrature detector, muting, logarithmic
received signal strength indicator (RSSI), and voltage regulator. The
SA615 combines the functions of Signetics’ SA602 and SA604A, but
features a higher mixer input intercept point, higher IF bandwidth
(25MHz) and temperature compensated RSSI and limiters
permitting higher performance application. The SA615 is available in
20-lead dual-in-line plastic, 20-lead SOL (surface-mounted miniature
package) and 20-lead SSOP (shrink small outline package).
The SA605 and SA615 are functionally the same device types. The
difference between the two devices lies in the guaranteed
specifications. The SA615 has a higher I
CC
, lower input third order
intercept point, lower conversion mixer gain, lower limiter gain, lower
AM rejection, lower SINAD, higher THD, and higher RSSI error than
the SA615. Both the SA605 and SA615 devices will meet the EIA
specifications for AMPS and TACS cellular radio applications.
For additional technical information please refer to application notes
AN1994, 1995 and 1996, which include example application
diagrams, a complete overview of the product, and artwork for
reference.
FEATURES
•
Low power consumption: 5.7mA typical at 6V
•
Mixer input to >500MHz
•
Mixer conversion power gain of 13dB at 45MHz
•
Mixer noise figure of 4.6dB at 45MHz
•
XTAL oscillator effective to 150MHz (L.C. oscillator to 1GHz local
oscillator can be injected)
•
102dB of IF Amp/Limiter gain
•
25MHz limiter small signal bandwidth
•
Temperature compensated logarithmic Received Signal Strength
Indicator (RSSI) with a dynamic range in excess of 90dB
•
Two audio outputs – muted and unmuted
•
Low external component count; suitable for crystal/ceramic/LC
filters
•
Excellent sensitivity: 0.22
µ
V into 50
Ω
matching network for 12dB
SINAD (Signal to Noise and Distortion ratio) for 1kHz tone with RF
at 45MHz and IF at 455kHz
•
SA615 meets cellular radio specifications
•
ESD hardened
PIN CONFIGURATION
LIMITER DECOUPLING
LIMITER DECOUPLING
IF AMP DECOUPLING
IF AMP DECOUPLING
QUADRATURE IN
UNMUTED AUDIO OUT
MUTED AUDIO OUT
19
17
13
12
1
2
3
4
5
6
7
8
9
10
18
16
15
14
11
20 RF IN
RF BYPASS
XTAL OSC
XTAL OSC
MUTE
IN
RSSI OUT
MIXER OUT
IF AMP IN
IF AMP OUT
GND
LIMITER IN
LIMITER OUT
V CC
N, D and DK Packages
NOTE:
See back page for package dimensions
SR00341
Figure 1. Pin Configuration
APPLICATIONS
•
Cellular radio FM IF
•
High performance communications receivers
•
Single conversion VHF/UHF receivers
•
SCA receivers
•
RF level meter
•
Spectrum analyzer
•
Instrumentation
•
FSK and ASK data receivers
•
Log amps
•
Wideband low current amplification
ORDERING INFORMATION
DESCRIPTION TEMPERATURE RANGE ORDER CODE DWG #
20-Pin Plastic Dual In-Line Package (DIP) –40 to +85
°
C SA615N SOT146-1
20-Pin Plastic Small Outline Large (SOL) package –40 to +85 ° C SA615D SOT108-1
20-Pin Plastic Shrink Small Outline Package (SSOP) –40 to +85
°
C SA615DK SOT266-1