PCM1774 datasheet(1/49 Pages) TI

Il numero della parte	PCM1774

Spiegazioni elettronici	16-Bit, Low-Power Stereo Audio DAC With Analog Mixing, Line and Headphone Outputs

PDF	49 Pages

Scroll/Zoom	100%

Produttore elettronici	TI [Texas Instruments]

Homepage	http://www.ti.com

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1 / 49 page

BurrBrown Products

from Texas Instruments

FEATURES

APPLICATIONS

DESCRIPTION

PCM1774

SLAS551 – JULY 2007

16-Bit, Low-Power Stereo Audio DAC With Analog Mixing, Line and Headphone Outputs

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

• Analog Front End:

• Programmable Function by Register Control:

–

Stereo Single-Ended Input

–

Digital Attenuation: 0 dB to –62 dB

–

Microphone Amplifier (12 dB, 20 dB)

–

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

• Analog Back End:

–

Power Up/Down Control for Each Module

–

Stereo/Mono Line Output With Volume

–

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

–

Stereo/Mono Headphone Amplifier With

–

0/12/20 dB for Microphone Input

Volume

–

0-dB to –21-dB Gain for Analog Mixing

• Analog Performance:

–

Three-Band Tone Control and 3D Sound

–

Dynamic Range: 93 dB

–

Analog Mixing Control

–

40-mW + 40-mW Headphone Output at

• Pop-Noise Reduction Circuit

RL = 16 Ω

• Short Protection Circuit

• Power Supply Voltage

• Package: 4-mm × 4-mm QFN Package

–

1.71 V to 3.6 V for Digital I/O Section

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

–

1.71 V to 3.6 V for Digital Core Section

–

2.4 V to 3.6 V for Analog Section

• Portable Audio Player, Cellular Phone

–

2.4 V to 3.6 V for Power Amplifier Section

• Video Camcorder, Digital Still Camera

• Low Power Dissipation:

• PMP/DMB/PND

–

6.4 mW in Playback, 1.8 V/2.4 V, 44.1 kHz

–

3.3

μW in Power Down

• Sampling Frequency: 5 kHz to 50 kHz

The PCM1774 is a low-power stereo DAC designed

• Operation From a Single Clock Input Without

for portable digital audio applications. The device

PLL

integrates headphone amplifier, line amplifier, line

• System Clock:

input, boost amplifier, programmable gain control,

analog mixing, and sound effects. It is available in a

–

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

small-footprint, 4-mm

× 4-mm QFN package. The

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

PCM1774 supports right-justified, left-justified, I2S,

and DSP formats, providing easy interfacing to audio

DSP and decoder/encoder chips. Sampling rates up

to 50 kHz are supported. The user-programmable

functions are accessible through a two- or three-wire

serial control 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.

I2C is a trademark of Philips Electronics.

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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