[Silabs]

Description
The Si3000 is a complete voice band audio codec solution that offers high integration by incorporating programmable input and output gain/ attenuation, a microphone bias circuit, handset hybrid circuit, and an output drive for 32 Ω headphones. The Si3000 can be connected directly to the Si3034, Si3035, and Si3044 ISOcap North American and international DAA chipsets through its daisy-chaining serial interface. The device operates from a single 3.3 to 5 V power supply and is available in a 16-pin small outline package (SOIC).

Features
Complete voice codec solution includes the following:
■ 84 dB ADC Dynamic Range
■ 84 dB DAC Dynamic Range
■ 4–12 kHz Sample Rates
■ 30 dB Microphone Pre-Amp
■ Programmable Input Gain/ Attenuation: –36 dB to 12 dB
■ Programmable Output Gain/ Attenuation: –36 dB to 12 dB
■ Support for 32 Ω Headphones
■ 3:1 Analog Input Mixer
■ 3.3–5.0 V Power Supply
■ Direct Interface to DSPs
■ Direct Connection to Si3034, Si3035, and Si3044 ISOcap™ DAA
■ Low profile 16 Pin SOIC Package

Applications
■ Modem Voice Channel (DSVD)
■ Telephony
■ Speech Processing
■ General Purpose Analog I/O