Philips SA617
The SA617 is a low voltage high performance monolithic FM IF system incorporating a mixer/oscillator, two limiting intermediate frequency amplifiers, quadrature detector, logarithmic received signal strength indicator (RSSI), voltage regulator and audio and RSSI op amps. The SA617 is available in 20-lead SSOP package. The SA617 was designed for portable communication applications and will function down to 2.7V.| Part No. | SA617 |
|---|---|
| Datasheet | SA617 Download |
| Manufacturer |  Philips |
| Description | Low-voltage high performance mixer FM IF system |
| Buy | Stock & Price |
DESCRIPTION
The SA617 is available in 20-lead SSOP package. The RF section is similar to the famous SA605. The audio output has an internal amplifier with the feedback pin accessible. The RSSI output is buffered. The SA617 also has an extra limiter output. This signal is buffered from the output of the limiter and can be used to perform frequency check. This is accomplished by comparing a reference frequency with the frequency check signal using a comparator to a varactor or PLL at the oscillator inputs. PIN CONFIGURATION DK Package RF IN+ RF IN– DECOUPLING OSCOUT OSCIN RSSI OUT VCC AUDIO FEEDBACK 1 2 3 4 5 6 7 20 MIXER OUT 19 IF AMP DECOUPLING 18 IF AMP IN 17 IF AMP DECOUPLING 16 IF AMP OUT 15 GND 14 LIMITER IN 13 LIMITER DECOUPLING 12 LIMITER DECOUPLING 11 LIM OUT (+) AUDIO OUT 8 FREQ CHECK/LIM OUT (–) 9 QUADRATURE IN 10FEATURES
● Low power consumption: 3.5mA typical at 3V● Mixer input to >150MHz
● Mixer conversion power gain of 17dB at 45MHz
● XTAL oscillator effective to 150MHz (L.C. oscillator or external oscillator can be used at higher frequencies) SR00405 Figure 1.
