PCM3794A datasheet(1/68 Pages) BURR-BROWN

Il numero della parte	PCM3794A

Spiegazioni elettronici	16-Bit, Low-Power Stereo Audio CODEC With Microphone Bias, Headphone, and Digital Speaker Amplifier

PDF	68 Pages

Scroll/Zoom	100%

Produttore elettronici	BURR-BROWN [Burr-Brown (TI)]

Homepage	http://www.burr-brown.com

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BurrBrown Products

from Texas Instruments

FEATURES

APPLICATIONS

DESCRIPTION

PCM3793A

PCM3794A

SLAS529A – JANUARY 2007 – REVISED FEBRUARY 2007

16-Bit, Low-Power Stereo Audio CODEC With Microphone Bias, Headphone, and Digital

Speaker Amplifier

• 2 (I2C) or 3 (SPI) Wire Serial Control

• Analog Front End:

• Programmable Function by Register Control:

–

Stereo Single-Ended Input With Multiplexer

–

Digital Attenuation of DAC: 0 dB to –62 dB

–

Mono Differential Input

–

Digital Gain of DAC: 0, 6, 12, 18 dB

–

Stereo Programmable Gain Amplifier

–

Power Up/Down Control for Each Module

–

Microphone Amplifier (20 dB) and Bias

–

6-dB to –70-dB Gain for Analog Outputs

• Analog Back End:

–

30-dB to –12-dB Gain for Analog Inputs

–

Stereo/Mono Line Output With Volume

–

0/20 dB Selectable for Microphone Input

–

Stereo/Mono Headphone Amplifier With

–

0-dB to –21-dB Gain for Analog Mixing

Volume and Capless Mode

–

Parameter Settings for ALC

–

Stereo/Mono Digital Speaker Amplifier

–

Three-Band Tone Control and 3D Sound

(BTL) With Volume

–

High-Pass Filter: 4-, 120-, 240-Hz

• Analog Performance:

–

Two-Stage Programmable Notch Filter

–

Dynamic Range: 93 dB (DAC)

–

Analog Mixing Control

–

Dynamic Range: 90 dB (ADC)

• Pop-Noise Reduction Circuit

–

40-mW + 40-mW Headphone Output at

• Short and Thermal Protection Circuit

RL = 16 Ω

• Package: 5-mm × 5-mm QFN Pacakge

–

700-mW + 700-mW Speaker Output at

• Operation Temperature Range: –40°C to 85°C

RL = 8 Ω

• Power Supply Voltage

–

1.71 V to 3.6 V for Digital I/O Section

• Portable Audio Player, Cellular Phone

–

1.71 V to 3.6 V for Digital Core Section

• Video Camcorder, Digital Movie/Still Camera

–

2.4 V to 3.6 V for Analog Section

• PMP/DMB

–

2.4 V to 3.6 V for Power Amplifier Section

• Low Power Dissipation:

The PCM3793A/94A is a low-power stereo CODEC

–

7 mW in Playback, 1.8 V/2.4 V, 48 kHz

designed for portable digital audio applications. The

–

13 mW in Record, 1.8 V/2.4 V, 48 kHz

device integrates stereo digital speaker amplifier,

–

3.3

µW in Power Down

headphone amplifier, line amplifier, line input, boost

• Sampling Frequency: 5 kHz to 50 kHz

amplifier,

microphone

bias,

programmable

gain

control, analog mixing, sound effects, and automatic

• Automatic Level Control for Recording

level control (ALC). It is available in a small-footprint,

• Operation From a Single Clock Input Without

5-mm

× 5-mm QFN package. The PCM3793A/94A

PLL

supports right-justified, left-justified, I2S, and DSP

• System Clock:

formats, providing easy interfacing to audio DSP and

decoder/encoder chips. Sampling rates up to 50 kHz

–

Common-Audio Clock (256 fS/384 fS), 12/24,

are supported. The user-programmable functions are

13/26, 13.5/27, 19.2/38.4, 19.68/39.36 MHz

accessible through a two- or three-wire serial control

• Headphone Plug Insert Detection

port.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

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PCM3794A Scheda tecnica(PDF) 1 Page - Burr-Brown (TI)

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