SI3220-FQ - Dual-Channel SLIC/CODEC, 64-TQFP | Skyworks Solutions
Teilenummer: SI3220-FQ ✓ AktivSI3220-FQ Übersicht
A SLIC is a semiconductor interface between a public switched telephone network line and a digital voice system, while a codec converts analog voice signals into digital PCM data. Integrating both functions into one IC reduces component count and simplifies dual-channel telephone interface designs. The SI3220-FQ supports GCI, PCM, and SPI control and data interfaces, allowing it to connect with a line-processing controller, DSP, or system processor.
The SI3220-FQ performs the complete BORSCHT line-interface functions and supports applications operating with line lengths up to 18 kft. Its internal balanced ringing generator provides up to 65 Vrms, allowing the device to implement ringing on both channels without a separate balanced ringer circuit. These integrated functions reduce board area while retaining the line supervision, codec, and ringing capabilities required by analog telephone equipment.
The device operates from either 3.3 V or 5 V and has a listed maximum power dissipation of 941 mW. Its specified operating-temperature range is 0°C to 70°C, making it appropriate for commercial-temperature subscriber line access, voice-over-IP endpoint, digital loop carrier, and analog telephone interface applications where environmental conditions remain within that range.
Typical deployments include two-channel voice gateways, office telephone interfaces, central-office line cards, voice-over-IP adapters, and digital loop carrier equipment. The dual-channel architecture provides two analog line interfaces in one package, while the 64-TQFP construction simplifies assembly through standard surface-mount handling.
Designers should follow the manufacturer pin-description table when assigning PCB tracks and should provide suitable bypass capacitors at the supply pins. Because the internal ringer can reach 65 Vrms, creepage, isolation, component spacing, and protection-network design require careful review. Confirm that the 0°C to 70°C temperature range, 941 mW power rating, and 18 kft application limit satisfy the intended deployment.
This page combines the SI3220-FQ interface, channel-count, power, ringing, temperature, and package specifications with application guidance and a same-package selection analysis. It also distinguishes verified attributes from parameters that require confirmation in the manufacturer datasheet or design qualification process.
Drop-in-Alternativen für SI3220-FQ – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
SI3220-G-FQ
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
SI3220-FQ Technische Daten
| Product Type | Dual-channel SLIC and codec interface IC |
| Number of Circuits | 2 channels |
| Digital Interface | GCI, PCM, and SPI |
| Supply Voltage Options | 3.3 V or 5 V |
| Versorgungsstrom | 65 mA |
| Power Dissipation | 941 mW |
| Betriebstemperatur | 0°C to 70°C |
| Internal Balanced Ringing Voltage | 65 Vrms |
| Maximum Line Length | 18 kft |
| Line Functions | Complete BORSCHT functions |
| Low-Voltage Process | Low-voltage CMOS |
| Standby Power | Low standby power; exact value not stated |
| Lead-Free Status | Lead-free |
| Gehäuse | 64-TQFP, 10 mm × 10 mm |
| Montageart | Surface mount |
| Analog Telephone Channels | 2 channels |
| Telephony Compliance References | LSSGR, ITU, and ETSI specifications |
| Ringer Configuration | Internal balanced ringing |
SI3220-FQ 64-tqfp, 10 mm × 10 mm Pinbelegungsleitfaden
Pinbelegung für SI3220-FQ (64-tqfp, 10 mm × 10 mm-Gehäuse). Pin-Nummerierung, Funktionen und Anschlussdiagramme sind im Herstellerdatenblatt definiert. Entnehmen Sie diesem den genauen Footprint und Lötrichtlinien.
Keine detaillierten Pinbelegungsdaten verfügbar für SI3220-FQ.
Siehe die Datenblatt für die vollständige Pin-Konfiguration.
Typische Anwendungen
SI3220-FQ ist geeignet für 6 Anwendungs: Two-Channel Voice Gateway, Digital Loop Carrier Line Card, Voice-over-IP Analog Endpoint, Central-Office Line Interface Card, Analog PBX Trunk Interface, Telephone Network Interface Test Equipment.
Two-Channel Voice Gateway
The SI3220-FQ fits a two-channel voice gateway because each package integrates two analog SLIC and codec channels, reducing the number of line-interface devices required on the card. GCI, PCM, and SPI connectivity supports a processor or DSP-oriented control architecture, while internal balanced ringing to 65 Vrms handles line-side signaling. Its 3.3 V or 5 V operation provides flexibility in system power planning. The design should account for the listed 941 mW power dissipation and place bypass capacitors close to the supply pins to preserve signal integrity and reduce supply impedance.
Empfohlen
Digital Loop Carrier Line Card
The SI3220-FQ is appropriate for a digital loop carrier line card requiring two analog subscriber-line channels in a commercial-temperature environment. Complete BORSCHT functions support the line supervision and telephone-interface duties associated with loop-carrier equipment, while the 18 kft application limit covers the intended line-class range. Its 64-TQFP package reduces board area relative to two separate single-channel interfaces. Deployment engineering should validate cable reach, protection-network behavior, ringer insulation, and system-level thermal performance rather than assuming that the nominal 18 kft rating covers every network environment.
Empfohlen
Voice-over-IP Analog Endpoint
The SI3220-FQ can support a voice-over-IP endpoint with two analog phone ports while digital voice traffic is exchanged through PCM or another supported interface. GCI and SPI provide control paths for configuring the integrated SLIC functions, and the internal balanced ringer eliminates a separate ringer block when the board protection design is compatible. The commercial 0°C to 70°C specification suits indoor access hardware. Designers should preserve isolation spacing around the 65 Vrms ringer outputs and verify that the selected protection components can withstand the relevant surge and transient conditions.
Empfohlen
Central-Office Line Interface Card
The SI3220-FQ suits central-office line-interface cards that need two subscriber lines, integrated codec functionality, and on-board ringing. Its 65 Vrms internal balanced ringer and complete BORSCHT support reduce external circuitry, while 3.3 V and 5 V operation supports processor-centered line cards. The 10 mm × 10 mm 64-TQFP package also conserves connector and backplane space. Thermal qualification is important because the device has a listed 941 mW power dissipation, so designers should use the package land pattern and copper area specified by the manufacturer and analyze junction temperature under worst-case line activity.
Empfohlen
Analog PBX Trunk Interface
The SI3220-FQ is suitable for an analog PBX trunk or peripheral interface requiring two channels in a compact commercial-temperature module. The dual SLIC/codec architecture consolidates line termination, supervision, ringing, and digital voice conversion into one 64-TQFP device. Supporting GCI, PCM, and SPI gives the system several paths for processor and DSP communication. Because the internal ringer reaches 65 Vrms, PCB layout must maintain suitable separation from sensitive logic, and external protection must be selected for the actual line exposure. The 18 kft application target provides a useful line-length planning boundary for supported designs.
Empfohlen
Telephone Network Interface Test Equipment
The SI3220-FQ can serve in telephone network interface test equipment that exercises two analog subscriber lines while monitoring codec and supervision behavior. Its GCI, PCM, and SPI interfaces allow a test controller to configure the device and exchange digital voice data, while internal balanced ringing supports line-state testing without a separate ringer source. The 0°C to 70°C range fits controlled indoor test environments. Board designers should allocate protection and measurement connections around the line inputs, maintain ringer clearance, and use the manufacturer pin descriptions when connecting test points to avoid disturbing sensitive analog and codec functions.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für SI3220-FQ – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Select SI3220-G-FQ when the equipment needs a wider temperature grade but can otherwise use the same SI3220 dual-channel architecture and 64-TQFP footprint. Verify the complete pin, voltage, current, timing, ringing, and environmental requirements before approving a substitution. Neither option should be selected solely by package name: the designer must also confirm line reach, protection requirements, thermal performance, and system compatibility with GCI, PCM, or SPI control.
Vergleich mit Alternativen
| Parameter | Dieses Produkt | SI3220-G-FQ |
|---|---|---|
| Brand | Skyworks Solutions | Skyworks Solutions |
| Package | 64-TQFP (10 mm × 10 mm) | 64-TQFP (10 mm × 10 mm) |
| Channel Count | 2 channels | 2 channels |
| Digital Interfaces | GCI, PCM, and SPI | GCI, PCM, and SPI |
| Supply Voltage | 3.3 V or 5 V | 3.3 V or 5 V |
| Supply Current | 65 mA | 65 mA |
| Power Dissipation | 941 mW | 941 mW |
| Operating Temperature | 0°C to 70°C | Wider temperature grade |
| Internal Ringing Voltage | 65 Vrms balanced | 65 Vrms balanced |
| Application Line Length | Up to 18 kft | Up to 18 kft |
Wichtigste Unterscheidungsmerkmale
- Combines two telephone channels in one package (vs. SI3220-G-FQ)
- Multi-interface controller connectivity (vs. SI3220-G-FQ)
- Integrated high-voltage balanced ringing (vs. SI3220-G-FQ)
Designhinweise
Place the required bypass capacitors adjacent to the SI3220-FQ supply pins and keep the high-current return path short and low-impedance. Preserve the manufacturer-recommended land pattern for the 64-TQFP package and maintain uninterrupted ground-plane area beneath the device. Analog line, codec, and digital interface routes should be separated from the 65 Vrms ringer outputs to reduce capacitive coupling and ringing-related signal integrity problems.
Use the listed 941 mW power dissipation as a thermal-design checkpoint, then calculate worst-case dissipation from actual VIN, output conditions, and line activity. The 65 mA supply-current specification also requires verifying that the upstream 3.3 V or 5 V rail can handle startup, codec activity, and ringer-related transients without excessive droop. Provide local supply decoupling and verify that the regulator does not interact adversely with the line ringer currents.
Treat the internal 65 Vrms balanced ringer as a high-voltage signal even though the logic supply is only 3.3 V or 5 V. Maintain suitable clearance between ringer conductors, external protection components, low-level codec paths, and user-accessible conductors. Use the manufacturer layout guidance for isolation, protection-network placement, and grounding, and check the finished assembly against the applicable product safety requirements.
Do not infer that the 18 kft application target guarantees full line reach in every installation. Cable resistance, loop current, protection devices, network voltage, ringer loading, and regional requirements can alter usable range. Likewise, confirm all 64 terminal assignments from the manufacturer pin table before routing signals, and verify that the replacement-grade option matches every electrical limit and software configuration used by the original design.
Compliance-Informationen
The product listing identifies the SI3220-FQ as lead-free. RoHS, REACH, halogen-free, and conflict-minerals status were not stated.
