Philips Semiconductors
Product specification
High performance low power mixer FM IF system
SA605
DESCRIPTION
PIN CONFIGURATION
The SA605 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
SA605 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 SA605 is available
in 20-lead dual-in-line plastic, 20-lead SOL (surface-mounted
miniature package) and 20-lead SSOP (shrink small outline
package).
N, D and DK Packages
RF
1
2
20 MIXER OUT
IF AMP DECOUPLING
IN
19
RF BYPASS
18 IF AMP IN
XTAL OSC
XTAL OSC
3
4
5
17 IF AMP DECOUPLING
16 IF AMP OUT
15 GND
MUTE
V
IN
6
CC
14 LIMITER IN
RSSI
7
8
OUT
The SA605 and SA615 are functionally the same device types. The
difference between the two devices lies in the guaranteed
13
MUTED AUDIO OUT
UNMUTED AUDIO OUT
QUADRATURE IN
LIMITER DECOUPLING
12
specifications. The SA615 has a higher I , lower input third order
9
LIMITER DECOUPLING
CC
intercept point, lower conversion mixer gain, lower limiter gain, lower
AM rejection, lower SINAD, higher THD, and higher RSSI error than
the SA605. Both the SA605 and SA615 devices will meet the EIA
specifications for AMPS and TACS cellular radio applications.
11 LIMITER OUT
10
SR00335
Figure 1. Pin Configuration
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
APPLICATIONS
• Cellular radio FM IF
• High performance communications receivers
• Single conversion VHF/UHF receivers
• SCA receivers
• 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
• RF level meter
• Temperature compensated logarithmic Received Signal Strength
• Spectrum analyzer
Indicator (RSSI) with a dynamic range in excess of 90dB
• Instrumentation
• Two audio outputs - muted and unmuted
• FSK and ASK data receivers
• Log amps
• Low external component count; suitable for crystal/ceramic/LC
filters
• Excellent sensitivity: 0.22µV into 50Ω matching network for 12dB
SINAD (Signal to Noise and Distortion ratio) for 1kHz tone with RF
at 45MHz and IF at 455kHz
• Wideband low current amplification
• SA605 meets cellular radio specifications
• ESD hardened
ORDERING INFORMATION
DESCRIPTION
TEMPERATURE RANGE
–40 to +85°C
ORDER CODE
SA605N
DWG #
20-Pin Plastic Dual In-Line Package (DIP)
20-Pin Plastic Small Outline Large (SOL) package
20-Pin Plastic Shrink Small Outline Package (SSOP)
SOT146-1
SOT163-1
SOT266-1
–40 to +85°C
SA605D
–40 to +85°C
SA605DK
2
1997 Nov 07
853-1401 18663
