The SA615DK/01,118 is a high performance monolithic low-power FM IF system incorporating amixer/oscillator, two limiting intermediate frequency amplifiers, quadrature detector,muting, logarithmic Received Signal Strength Indicator (RSSI), and voltage regulator. TheSA615DK/01,118 combines the functions of NXP Semiconductors SA602A and SA604A, butfeatures a higher mixer input intercept point, higher IF bandwidth (25 MHz) andtemperature compensated RSSI and limiters permitting higher performance application.The SA615DK/01,118 is available in 20-lead SO (surface-mounted miniature package) and 20-leadSSOP (shrink small outline package).
The SA605 and SA615DK/01,118 are functionally the same device types. The difference betweenthe two devices lies in the guaranteed specifications. The SA615DK/01,118 has a higher ICC, lowerinput third-order intercept point, lower conversion mixer gain, lower limiter gain, lower AMrejection, lower SINAD, higher THD, and higher RSSI error than the SA615. Both theSA605 and SA615DK/01,118 devices meet the EIA specifications for AMPS and TACS cellular radioapplications.
Feature
Low power consumption: 5.7 mA typical at 6 V
Mixer input to >500 MHz
Mixer conversion power gain of 13 dB at 45 MHz
Mixer noise figure of 4.6 dB at 45 MHz
XTAL oscillator effective to 150 MHz (L/C oscillator to 1 GHz local oscillator can beinjected)
102 dB of IF amplifier/limiter gain
25 MHz limiter small signal bandwidth
Temperature-compensated logarithmic Received Signal Strength Indicator (RSSI) witha dynamic range in excess of 90 dB
Two audio outputs — muted and unmuted
Low external component count; suitable for crystal/ceramic/LC filters
Excellent sensitivity: 0.22 μV into 50 Ω matching network for 12 dB SINAD(Signal-to-Noise-and-Distortion ratio) for 1 kHz tone with RF at 45 MHz and IF at455 kHz
SA615 meets cellular radio specifications
ESD hardened
Target 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
Catalogue
FPGA / CPLD
Memory
MOS 
MCU 
DSP
OCEP
Secondary 
Other 
