PCM1774 Datasheet, PDF (1/49 Pages) Texas Instruments – 16-Bit, Low-Power Stereo Audio DAC With Analog Mixing, Line and Headphone Outputs

BurrĆBrown Products
from Texas Instruments
PCM1774
SLAS551 – JULY 2007
16-Bit, Low-Power Stereo Audio DAC With Analog Mixing, Line and Headphone Outputs
FEATURES
• Analog Front End:
– Stereo Single-Ended Input
– Microphone Amplifier (12 dB, 20 dB)
• Analog Back End:
– Stereo/Mono Line Output With Volume
– Stereo/Mono Headphone Amplifier With
Volume
• Analog Performance:
– Dynamic Range: 93 dB
– 40-mW + 40-mW Headphone Output at
R_L = 16 Ω
• Power Supply Voltage
– 1.71 V to 3.6 V for Digital I/O Section
– 1.71 V to 3.6 V for Digital Core Section
– 2.4 V to 3.6 V for Analog Section
– 2.4 V to 3.6 V for Power Amplifier Section
• Low Power Dissipation:
– 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
• Operation From a Single Clock Input Without
PLL
• System Clock:
– Common-Audio Clock (256 f_S/384 f_S), 12/24,
13/26, 13.5/27, 19.2/38.4, 19.68/39.36 MHz
• 2 (I²C™) or 3 (SPI) Wire Serial Control
• Programmable Function by Register Control:
– Digital Attenuation: 0 dB to –62 dB
– Digital Gain of DAC: 0, 6, 12, 18 dB
– Power Up/Down Control for Each Module
– 6-dB to –70-dB Gain for Analog Outputs
– 0/12/20 dB for Microphone Input
– 0-dB to –21-dB Gain for Analog Mixing
– Three-Band Tone Control and 3D Sound
– Analog Mixing Control
• Pop-Noise Reduction Circuit
• Short Protection Circuit
• Package: 4-mm × 4-mm QFN Package
• Operation Temperature Range: –40°C to 85°C
APPLICATIONS
• Portable Audio Player, Cellular Phone
• Video Camcorder, Digital Still Camera
• PMP/DMB/PND
DESCRIPTION
The PCM1774 is a low-power stereo DAC designed
for portable digital audio applications. The device
integrates headphone amplifier, line amplifier, line
input, boost amplifier, programmable gain control,
analog mixing, and sound effects. It is available in a
small-footprint, 4-mm × 4-mm QFN package. The
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.
Copyright © 2007, Texas Instruments Incorporated