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SA608
Datasheet
General description
The SA608 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 SA608 is available in 20-lead dual-in-line plastic, 20-lead SOL (surface-mounted miniature package) and 20-lead SSOP package.
The SA608 was designed for portable communication applications and will function down to 2.7V. The RF section is similar to the famous NE605. The audio output is buffered. The RSSI output has an internal amplifier with the feedback pin accessible. The SA608 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.
Features
- 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)
- 102dB of IF Amp/Limiter gain
- 2MHz limiter small signal bandwidth
- Temperature compensated logarithmic Received Signal Strength Indicator (RSSI) with a 90dB dynamic range
- Low external component count; suitable for crystal/ceramic/LC filters
- Excellent sensitivity: 0.31µV into 50W matching network for 12dB SINAD (Signal to Noise and Distortion ratio) for 1kHz tone, 8kHz deviation with RF at 45MHz and IF at 455kHz
- SA608 meets cellular radio specifications
- Audio output internal op amp
- RSSI output internal op amp
- Buffered frequency check output
- Internal op amps with rail-to-rail outputs
- ESD protection:
Human Body Model 2kV
Robot Model 200V
Products/packages
| Type number | North American Type number | Ordering code (12NC) | Product status | Package | Packing | Marking | Chemical content | Leadfree conversion date |
|---|---|---|---|---|---|---|---|---|
| SA608DK/01 | SA608DK/01-T | 9352 752 88118 | Volume production | SOT266-1
(SSOP20) | Reel Pack, SMD, 13" | Standard Marking | SA608DK/01
| week 12, 2005 |
| SA608DK/01 | SA608DK/01 | 9352 752 88112 | Volume production | SOT266-1
(SSOP20) | Tube | Standard Marking | SA608DK/01
| week 12, 2005 |
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Indicative price/unit($) | Region | Distributor | In stock | Order quantity | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|---|
| SA608DK/01 | 9352 752 88118 | 3.2400 | NA | DIGI-KEY CORPORATION | 1,706 | 1/8/2009 | Buy online | Order samples | |
| SA608DK/01 | 9352 752 88112 | 3.2400 | NA | FUTURE ELECTRONICS | 810 | 1/7/2009 | Buy online | not available |
Applications
- Portable cellular radio FM IF
- Cordless phones
- Narrow band cellular applications (NAMPS/NTACS)
- RF level meter
- Spectrum analyzer
- Instrumentation
- FSK and ASK data receivers
- Log amps
- Portable high performance communication receivers
- Single conversion VHF receivers
- Wireless systems
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