Si3218x Common Specs
- Single-chip single-channel FXS solution
- 5 mm x 6 mm or 6mm x 6mm QFN package enables small board area
- Patent-pending low-cost capacitive boost tracking dc-dc controller
- Reduced BOM cost vs. other tracking or shared supplies in the industry
- Ultra-low power consumption (50mW on hook)
- Patented low-power ringing
- PCM/SPI (Si32184/5) or three-wire ISI (Si32182/3) host interface options
- Global programmability
- Simplified configuration and diagnostics supported by ProSLIC API
- Ringing frequency, amplitude, cadence, and waveshape
- Transhybrid balance
- DC current loop feed (10–45 mA)
- Loop closure and ring trip thresholds
- Ground key detection threshold
- Integrated test load
- Wideband voice support
- On-hook transmission
- Loop or ground start operation
- DTMF detection option (Si32183/5)
- DTMF generation
- Pulse metering
- -106 V Max Vbat
- 3.3 V operation
- 1.8 V or 3.3 V I/O without level shifters
Find the Right Si3218 Single-Channel Device
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| Part Number | Host Interface | # FXS Channel | # FXO Channel | Max V Battery | Wideband | DTMF Detection | Pulse Metering | Daisy-chain Mode | Smart Ringing | dc-dc Options * | Package Type | Package Size (mm) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ISI | 1 | 0 | -106 | LCCB | QFN36 | 5x6 | ||||||
| ISI | 1 | 0 | -106 | LCCB | QFN36 | 5x6 | ||||||
| PCM/SPI | 1 | 0 | -106 | LCCB | QFN40 | 6x6 | ||||||
| PCM/SPI | 1 | 0 | -106 | LCCB | QFN40 | 6x6 |
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*LCCB (Low-Cost Capacitive Boost)