PCM1770_07 Datasheet, PDF (1/38 Pages) Texas Instruments – LOW-VOLTAGE AND LOW-POWER STEREO AUDIO DIGITAL-TO-ANALOG CONVERTER WITH HEADPHONE AMPLIFIER

BurrĆBrown Products
from Texas Instruments
PCM1770, PCM1771
SLES011E – SEPTEMBER 2001 – REVISED MARCH 2007
LOW-VOLTAGE AND LOW-POWER STEREO AUDIO DIGITAL-TO-ANALOG CONVERTER
WITH HEADPHONE AMPLIFIER
FEATURES
• Multilevel DAC Including Headphone Amplifier
• Analog Performance (V_CC, V_HP = 2.4 V):
– Dynamic Range: 98 dB Typ
– THD+N at 0 dB: 0.1% Typ
– THD+N at –20 dB: 0.04% Typ
– Output Power at R_L = 16 Ω: 13 mW
(Stereo), 26 mW (Monaural)
• 1.6-V to 3.6-V Single Power Supply
• Low Power Dissipation: 6.5 mW at V_CC, V_HP =
2.4 V
• System Clock: 128 f_S, 192 f_S, 256 f_S, 384 f_S
• Sampling Frequency: 5 kHz to 50 kHz
• Software Control (PCM1770):
– 16-, 20-, 24-Bit Word Available
– Left-, Right-Justified, and I²S
– Slave/Master Selectable
– Digital Attenuation: 0 dB to –62 dB, 1
dB/Step
– 44.1-kHz Digital De-Emphasis
– Zero Cross Attenuation
– Digital Soft Mute
– Monaural Analog-In With Mixing
– Monaural Speaker Mode
• Hardware Control (PCM1771):
– Left-Justified and I²S
– 44.1-kHz Digital De-Emphasis
– Monaural Analog-In With Mixing
• Pop-Noise-Free Circuit
• 3.3-V Tolerant
• Packages: TSSOP-16 and VQFN-20
APPLICATIONS
• Portable Audio Player
• Cellular Phone
• PDA
• Other Applications Requiring Low-Voltage
Operation
DESCRIPTION
The PCM1770 and PCM1771 devices are CMOS,
monolithic, integrated circuits which include stereo
digital-to-analog converters, headphone circuitry, and
support circuitry in small TSSOP-16 and VQFN-20
packages.
The data converters use TI's enhanced multilevel ∆-Σ
architecture, which employs noise shaping and
multilevel amplitude quantization to achieve excellent
dynamic performance and improved tolerance to
clock jitter. The PCM1770 and PCM1771 devices
accept several industry standard audio data formats
with 16- to 24-bit data, left-justified, I²S, etc.,
providing easy interfacing to audio DSP and decoder
devices. Sampling rates up to 50 kHz are supported.
A full set of user-programmable functions is
accessible through a 3-wire serial control port, which
supports register write functions.
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.
Copyright © 2001–2007, Texas Instruments Incorporated