Voice

ProSLIC®

ProSLIC Voice Solutions

The ProSLIC® family of subscriber line interface circuits (SLICs) provides complete analog telephone interfaces ideal for customer premise equipment (CPE), enterprise and central office applications. These highly-integrated SLICs offer global compliance using a single hardware design and bill-of-materials while reducing the PCB size and cost per channel.

Family # of Channels Interface Max Vbat (V) Lower-Cost Capacitive Boost dc-dc Controller Option Smart Ringing Package Size (mm) Package Type
Next Generation Si3218x Single-Chip ProSLICs NEW Single PCM or ISI -106 Yes No 5 x 6
6 x 6
QFN36
QFN40
Next Generation Si3228x Dual-Chip ProSLICs NEW Dual ISI
PCM
-106 Yes Yes 7 x 7
8 x 8
QFN48
QFN56
Si3217x Single-Chip ProSLICs Single PCM or ISI -140 No No 5 x 7 LGA42
Si3226x Single-Chip Dual ProSLICs Dual PCM or ISI -140 No No 6 x 8
8 x 8
LGA50
LGA60
Si3239x Analog Interface ProSLICs Dual or Single Analog -136 No No 6 x 6 QFN48
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Voice Codec

Si3000 Voice Codecs

The Si3000 is a complete solution for voice I/O such as handsets in multi-function printers. It can be connected directly to any high-speed, ISOmodem system-side chip to support a telephone handset. An extended AT command set is available to control the Si3000.
In addition to a codec (A/D, D/A), the device integrates a microphone preamplifier, three-input mixer, +12.5 to –34.5 dB of programmable gain, headphone/speaker driver, and an integrated handset hybrid for direct connection to a two-wire telephone handset. Programmable gain and attenuation settings are available on both the A/D converter and the D/A converter signal paths with 1.5 dB step resolution. Programmable gain/attenuation is implemented using a zero crossing technique to enable “click-free” level transitions. Operation from a single +5 V or a single +3.3 V power supply makes the device suitable for low power portable applications.

Product Matrix

Part Number Data Sheet Package Type Microphone Amplifier Headphone Driver Handset Hybrid
SOIC16 Yes Yes Yes
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Voice DAA

Voice DAAs – Si3050 + Si3011/18/19

The Si3050 IC extends the market-leading performance of Silicon Labs’ Silicon Direct Access Arrangement (DAA) products into the voice telephony market.
The small-footprint chipset consists of a 20-pin Si3050 (TSSOP) system-side device and either the 16-pin Si3019 (TSSOP) or the 16-pin Si3018 (SOIC) line-side device. The solution utilizes Silicon Labs’ patented capacitive isolation technology that uses low-cost, high voltage capacitors instead of a costly and bulky transformer. The Si3050 contains both a PCM highway/SPI interface for most standard telephony applications as well as a GCI interface for customers with legacy requirements.

Product Matrix

Part Number Data Sheet Package Type Host Interface Line Voltage Monitor BOM Components AC Termination Settings
SOIC16; TSSOP20 + SOIC8 GCI; PCM/SPI Yes 32 4; 16
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