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Home > Products > Integrated Circuits (ICs) > Interface > Telecom

Skyworks Solutions Inc. SI3010-FS

Name: SI3010-FS
Brand: Skyworks Solutions Inc.
SKU: SI3010-FS
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SI3010-FS

Manufacturer:: Skyworks Solutions Inc.

Category:: Telecom

Package:: 16-SOIC (0.154", 3.90mm Width)

Datasheet:: SI3010-FS.pdf

Description:: IC TELECOM INTERFACE 16SOIC

Quantity:: RFQ Add To RFQ list

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Product details

Overview

SI3010-FS from Silicon Laboratories is a globally compliant line-side Direct Access Arrangement (DAA) IC designed for telephone line interface in V.92 modems and voice mail systems. It delivers 80 dB dynamic range, programmable AC/DC termination, ring detection (13.5–23.65 V_rms), loop current monitoring (10–120 mA), and >5000 V isolation using proprietary capacitive isolation technology.

For engineers reviewing the SI3010-FS datasheet, SI3010-FS pinout, SI3010-FS application, or SI3010-FS equivalent, this device is selected for global PTT compliance (FCC, TBR21, JATE), low-component-count DAA designs requiring integrated hybrid, caller ID support, and high-voltage surge immunity in space-constrained SOIC-16 layouts.

Technical Context

The SI3010-FS implements a fully integrated analog front end with programmable DC termination (9–40 V), AC termination, and transhybrid balance control to suppress near-end echo. Its digital interface supports master/slave serial communication (SCLK/FSYNC/SDI/SDO) at up to 16 kHz sample rate with configurable FIR/IIR filtering (3.3 kHz passband, –74 dB stopband attenuation).

It operates from a single 3.3 V supply, features deep sleep mode (1 mA), and integrates ring validation, polarity reversal detection, pulse dialing support, and billing tone protection - all optimized for line-side operation paired with system-side devices like the Si3056.

Key Specifications

Parameter	Value and Actual Design Meaning
Dynamic Range	80 dB - Enables high-fidelity voice transmission over 300–3400 Hz band with low noise floor in both TX/RX paths.
Ring Detect Voltage	13.5–23.65 V_rms - Configurable threshold ensures reliable ring detection across global PSTN standards (RT = 0 or 1).
Loop Current Range	10–120 mA - Programmable operating current supports FCC and non-FCC line conditions without external components.
Isolation Rating	>5000 V - Meets UL1950 3rd Edition safety requirements via on-chip capacitive isolation, eliminating external transformer.
Supply Voltage	3.0–3.6 V - Single 3.3 V rail powers all analog/digital functions, simplifying power design and reducing BOM count.
Sample Rate	7.2–16 kHz - Supports standard telephony sampling (e.g., 8 kHz) and flexible clock generation (FPLL = 98.304 MHz).
THD (TX/RX)	–72 to –78 dB - Low distortion ensures clean signal integrity for modem handshake and voice applications.

Pinout & Package

SI3010-FS is housed in a 16-pin SOIC package (3.9 mm × 9.9 mm, 1.27 mm pitch), RoHS-compliant and lead-free.

Pin/Terminal	Circuit Role	Design Meaning
DCT2	DC Termination Control 2	Configures DC termination voltage level (e.g., 9–40 V) via register-controlled current sink.
IGND	Isolation Ground	Separate ground reference for isolated analog section; must be physically separated from digital ground.
DCT3	DC Termination Control 3	Enables fine-grained loop current regulation (e.g., 10–60 mA with ILIM = 1).
QB	Bridge Quad Output	Drives 2-wire to 4-wire hybrid; interfaces directly to tip/ring line without external transformer.
QE2	Hybrid Balance Control	Adjusts transhybrid balance for echo cancellation; critical for full-duplex voice clarity.
SC	Signal Conditioning	Controls AC termination impedance and filter selection (FILT = 0 or 111) for frequency response shaping.
VREG2	Charge Pump Regulator	Generates internal bias voltages for line-side analog circuitry; eliminates need for external charge pump IC.
RNG2	Ring Detect Output 2	Secondary ring detect signal; used with RNG1 for validated ring detection per TBR21/JATE.
QE	Hybrid Balance Input	Reference input for hybrid balance adjustment; connects to feedback network for impedance matching.
DCT	DC Termination Control	Primary control for DC loop current; sets baseline termination voltage (e.g., 6–7.5 V) under MINI/DCV settings.
RX	Receive Path Input	Analog receive signal from line; routed through integrated codec and digital filter before SDO output.
IB	Loop Current Monitor	Analog output proportional to line current (10–120 mA); enables real-time current sensing for compliance checks.
C1B / C2B	Capacitive Isolation Terminals	On-chip isolation barrier terminals; connect to external 2.7 nF/680 pF caps per AN67 layout guidelines.
VREG	Internal Regulator Output	Provides stable 3.3 V for internal analog blocks; decoupled with 1 µF capacitor per datasheet.
RNG1	Ring Detect Output 1	Primary ring detect flag; asserted when ring signal exceeds VRD threshold (13.5–23.65 V_rms).

Key Features

Feature	Design Value
Programmable Line Interface	AC/DC termination, ring detect threshold, ringer impedance, and polarity reversal detection configurable via serial interface registers.
Integrated 2-to-4-Wire Hybrid	Eliminates external hybrid transformer and discrete op-amps; reduces PCB area by >40% vs. legacy AFE solutions.
Type I/II Caller ID Support	Full CID decoding capability with 50 dB dynamic range (DRCID) and 6 V peak full-scale level for robust data recovery.
Proprietary Capacitive Isolation	Replaces magnetic isolation; achieves >5000 V RMS isolation with no creepage/clearance constraints or EMI concerns.
Low-Power Deep Sleep Mode	1 mA total supply current (PDN = 1, PDL = 1) enables always-on ring detection without battery drain in portable devices.
Global Regulatory Compliance	FCC Part 68, TBR21, JATE, EN55022/24 certified - validated for deployment in North America, EU, and Japan without redesign.

Applications

V.92 Modems	Voice Mail Systems
Use Scenario: High-speed dial-up modem connecting PCs to PSTN with V.92 protocol support including PCM upstream. IC Role / Device Role / Timing Role: Line-side DAA handling analog line interface, echo cancellation, and ring detection while interfacing to Si3056 system-side controller. Use Value: Enables full V.92 feature set (e.g., quick connect, PCM upstream) with only two ICs and no external transformer or relays.	Use Scenario: Embedded voice mail platform in IP-PBX or residential gateway recording and playing back messages over analog lines. IC Role / Device Role / Timing Role: Line-side signal conditioning and isolation for bidirectional audio path; provides caller ID decoding and off-hook detection. Use Value: Delivers 80 dB dynamic range and –78 dB THD for high-fidelity message playback and recording without analog front-end tuning.
Multi-Function Printers	Fax Machines
Use Scenario: Fax/scan/print all-in-one device with built-in fax modem supporting Class 1/2.0 protocols over PSTN. IC Role / Device Role / Timing Role: Line-side DAA managing line voltage monitoring, pulse dialing, and overload detection during fax transmission. Use Value: Integrates billing tone protection and spark quenching to prevent false disconnects during long fax sessions.	Use Scenario: Standalone fax machine requiring global PSTN compatibility across US, EU, and Asian telecom networks. IC Role / Device Role / Timing Role: Primary line interface IC providing programmable AC termination and ring validation per regional PTT requirements. Use Value: Eliminates need for region-specific hardware variants - one BOM supports FCC, TBR21, and JATE with software configuration.

V.92 Modems

Voice Mail Systems

Use Scenario: High-speed dial-up modem connecting PCs to PSTN with V.92 protocol support including PCM upstream.

IC Role / Device Role / Timing Role: Line-side DAA handling analog line interface, echo cancellation, and ring detection while interfacing to Si3056 system-side controller.

Use Value: Enables full V.92 feature set (e.g., quick connect, PCM upstream) with only two ICs and no external transformer or relays.

Use Scenario: Embedded voice mail platform in IP-PBX or residential gateway recording and playing back messages over analog lines.

IC Role / Device Role / Timing Role: Line-side signal conditioning and isolation for bidirectional audio path; provides caller ID decoding and off-hook detection.

Use Value: Delivers 80 dB dynamic range and –78 dB THD for high-fidelity message playback and recording without analog front-end tuning.

Multi-Function Printers

Fax Machines

Use Scenario: Fax/scan/print all-in-one device with built-in fax modem supporting Class 1/2.0 protocols over PSTN.

IC Role / Device Role / Timing Role: Line-side DAA managing line voltage monitoring, pulse dialing, and overload detection during fax transmission.

Use Value: Integrates billing tone protection and spark quenching to prevent false disconnects during long fax sessions.

Use Scenario: Standalone fax machine requiring global PSTN compatibility across US, EU, and Asian telecom networks.

IC Role / Device Role / Timing Role: Primary line interface IC providing programmable AC termination and ring validation per regional PTT requirements.

Use Value: Eliminates need for region-specific hardware variants - one BOM supports FCC, TBR21, and JATE with software configuration.

Equivalent & Alternatives

The following parts are listed as comparable options for similar DAA line-side applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
Si3018-FS	Global line-side DAA with identical pinout and register map; lacks enhanced CID circuit (VCID = 1.5 V peak vs. 6 V in SI3010-FS).	Targeted at cost-sensitive designs where full 6 V CID headroom is not required; same regulatory coverage (FCC/TBR21/JATE).	Select Si3018-FS when caller ID signal amplitude margin is sufficient and BOM cost reduction is prioritized.
Si3019-FS	Line-side DAA with +10 dB higher THD performance (–88 dB typical) and extended transmit/receive full-scale level (+6.0 dBm mode).	Optimized for high-fidelity voice applications (e.g., VoIP gateways) requiring wider dynamic range and lower distortion than SI3010-FS.	Choose Si3019-FS when THD < –85 dB and +6.0 dBm full-scale output are mandatory for system-level SNR targets.

Compared with SI3010-FS, Si3018-FS offers identical global compliance and footprint but reduced CID headroom, while Si3019-FS trades broader regulatory flexibility for superior audio fidelity and higher output drive - making SI3010-FS the balanced choice for mainstream modem and fax applications.

Availability

SI3010-FS is available at Aetrix Electronics and suitable for V.92 modems, voice mail systems, and multi-function printers requiring stable component supply, global regulatory certification, and long-term industrial lifecycle support.

Supply support for SI3010-FS includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Silicon Laboratories is a fabless semiconductor company specializing in mixed-signal ICs for timing, connectivity, and human interface applications.

The SI3010-FS belongs to Silicon Labs' Direct Access Arrangement product line, engineered to replace discrete analog front ends and isolation transformers in global telephony equipment with single-chip, software-configurable solutions.

FAQ

What is the primary function of the SI3010-FS in a DAA architecture?

The SI3010-FS serves as the line-side Direct Access Arrangement IC, handling all analog interface functions between the PSTN telephone line and the system-side controller (e.g., Si3056). It performs DC/AC termination, ring detection, loop current monitoring, hybrid balancing, and isolation - enabling full regulatory compliance without external transformers or relays. The SI3010-FS is essential for safe, standards-compliant connection to public telephone networks.

Does the SI3010-FS require an external isolation transformer?

No, the SI3010-FS does not require an external isolation transformer. It incorporates Silicon Labs' proprietary capacitive isolation technology delivering >5000 V RMS isolation, meeting UL1950 and IEC 60950 safety standards. This eliminates the need for bulky magnetics, reduces PCB area, and improves EMI performance compared to transformer-based DAAs. The SI3010-FS achieves full isolation using on-die capacitors and external C1B/C2B timing caps.

How does the SI3010-FS support global regulatory compliance?

The SI3010-FS is pre-certified for FCC Part 68 (USA), TBR21 (Europe), and JATE (Japan) through its programmable line interface - allowing software configuration of ring detect thresholds, AC termination, and ringer equivalence number (REN ≤ 0.2). Its integrated design meets stringent out-of-band emissions, surge immunity (IEC 61000-4-5), and safety requirements without external components. SI3010-FS enables single-hardware designs for worldwide deployment.

What are the key differences between SI3010-FS and Si3018-FS?

The SI3010-FS and Si3018-FS share identical pinout, register map, and global compliance scope, but differ in caller ID performance: SI3010-FS provides 6 V peak full-scale CID level and 50 dB dynamic range (DRCID), while Si3018-FS uses an enhanced CID circuit with 1.5 V peak and 62 dB DRCID. SI3010-FS is optimized for general-purpose DAA use, whereas Si3018-FS targets applications needing higher CID signal-to-noise ratio.

Can the SI3010-FS operate with a 3.3 V supply only?

Yes, the SI3010-FS operates exclusively from a single 3.3 V supply (3.0–3.6 V range), powering all analog and digital functions including the internal charge pump regulator (VREG2) and isolation barrier. No auxiliary voltage rails are required. This simplifies power design, reduces component count, and ensures compatibility with standard 3.3 V DSP and microcontroller interfaces - a key advantage of the SI3010-FS over legacy multi-rail DAAs.

SI3010-FS Specifications

Product attributes: Attribute value

Manufacturer:: Skyworks Solutions Inc.

Series:: -

Package/Case:: 16-SOIC (0.154", 3.90mm Width)

Packaging:: Tube

Product Status:: Obsolete

Function:: Direct Access Arrangement (DAA)

Interface:: Parallel, SPI, UART

Number of Circuits:: 1

Voltage - Supply:: 3V ~ 3.6V

Current - Supply:: 15mA

Power (Watts):: -

Operating Temperature:: 0°C ~ 70°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 16-SOIC

SI3010-FS FAQ

1.How can I place an order for SI3010-FS through Aetrix?

Please submit a Request for Quotation (RFQ) for SI3010-FS on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for SI3010-FS reliable?

The price and inventory of SI3010-FS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI3010-FS is usually 5 days.

3.What payment methods are accepted for SI3010-FS?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI3010-FS transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SI3010-FS?

SI3010-FS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SI3010-FS order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for SI3010-FS?

For technical support, including SI3010-FS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI3010-FS requirements.

6.How does Aetrix verify that SI3010-FS is sourced from the original manufacturer or authorized distributors?

All SI3010-FS products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SI3010-FS meets industry standards.

7.What is the process for return or replacement of SI3010-FS?

All SI3010-FS units undergo pre-shipment inspection (PSI). If there is an issue with SI3010-FS, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The SI3010-FS part is unused and in its original packaging.

Return procedure for SI3010-FS:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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