ꢭ
ꢡ
ꢚ
ꢛ
ꢜ
ꢛ
ꢉ
ꢭ
ꢋꢢ
ꢛ
ꢚ
ꢩ
ꢪ
ꢘ
ꢀ
ꢛ
ꢚ
ꢦ
ꢡ
ꢡ
ꢜ
ꢠ
ꢢ
ꢞ
ꢟ
ꢘ
ꢀ ꢁꢂ ꢃ ꢄꢄ ꢅ
ꢀ ꢁꢂ ꢃ ꢄꢄ ꢃ
ꢙ
ꢛ
ꢝ
ꢟ
ꢔ
ꢘ
ꢟ
ꢞ
ꢛ
ꢞ
ꢟ
SLES011C – SEPTEMBER 2001 – REVISED MAY 2004
ꢆ
ꢇ
ꢈ
ꢉ
ꢊ
ꢇ
ꢆ
ꢋ
ꢌ
ꢍ
ꢎ
ꢁ
ꢌ
ꢏ
ꢐ
ꢆ
ꢇ
ꢈ
ꢉ
ꢀ
ꢇ
ꢈ
ꢎ
ꢑ
ꢒ
ꢋ
ꢎ
ꢑ
ꢎ
ꢇ
ꢌ
ꢓ
ꢎ
ꢐ
ꢔ
ꢇ
ꢐ
ꢔ
ꢍ
ꢔ
ꢋ
ꢌ
ꢆ
ꢉ
ꢋ
ꢇ
ꢉ
ꢌ
ꢏ
ꢌ
ꢆ
ꢇ
ꢍ
ꢇ
ꢏ
ꢊ
ꢎ
ꢑ
ꢋ
ꢎ
ꢑ
ꢈ
ꢔ
ꢋ
ꢕ
ꢕ
ꢎ
ꢌ
ꢐ
ꢀ
ꢕ
ꢇ
ꢏ
ꢌ
ꢂ
ꢀ
ꢆ
ꢔ
ꢖ
ꢔ
ꢎ
ꢑ
D
Pop-Noise-Free Circuit
3.3-V Tolerant
FEATURES
D
D
D
D
Multilevel DAC Including Headphone
Amplifier
Packages: TSSOP-16 and VQFN-20, Lead Free
Analog Performance (V , V
= 2.4 V):
CC HP
APPLICATIONS
− Dynamic Range: 98 dB Typ
− THD+N at 0 dB: 0.1% Typ
− THD+N at −20 dB: 0.04% Typ
D
D
D
D
Portable Audio Player
Cellular Phone
PDA
− Output Power at R = 16 Ω: 13 mW
L
(Stereo), 26 mW (Monaural)
1.6-V to 3.6-V Single Power Supply
Low Power Dissipation: 6.5 mW at V
Other Applications Requiring Low-Voltage
Operation
D
D
,
CC
V
= 2.4 V
HP
DESCRIPTION
D
D
D
System Clock: 128 f , 192 f , 256 f , 384 f
S S S S
Sampling Frequency: 5 kHz to 50 kHz
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.
Software Control (PCM1770):
− 16-, 20-, 24-Bit Word Available
− Left-, Right-Justified, and I S
2
− 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
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
− Monaural Analog-In With Mixing
− Monaural Speaker Mode
2
24-bit data, left-justified, I S, 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 are accessible through a
3-wire serial control port, which supports register write
functions.
D
Hardware Control (PCM1771):
− Left-Justified and I S
− 44.1-kHz Digital De-Emphasis
− Monaural Analog-In With Mixing
2
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.
ꢀꢑ ꢇ ꢐꢓ ꢁ ꢋꢔ ꢇꢏ ꢐ ꢌꢋꢌ ꢗꢘ ꢙꢚ ꢛ ꢜꢝ ꢞꢗꢚꢘ ꢗꢟ ꢠꢡ ꢛ ꢛ ꢢꢘꢞ ꢝꢟ ꢚꢙ ꢣꢡꢤ ꢥꢗꢠ ꢝꢞꢗ ꢚꢘ ꢦꢝ ꢞꢢꢧ ꢀꢛ ꢚꢦꢡ ꢠꢞꢟ
ꢠ ꢚꢘ ꢙꢚꢛ ꢜ ꢞꢚ ꢟ ꢣꢢ ꢠ ꢗ ꢙꢗ ꢠ ꢝ ꢞꢗ ꢚꢘꢟ ꢣ ꢢꢛ ꢞꢨꢢ ꢞꢢ ꢛ ꢜꢟ ꢚꢙ ꢋꢢꢩ ꢝꢟ ꢔꢘꢟ ꢞꢛ ꢡꢜ ꢢꢘꢞ ꢟ ꢟꢞ ꢝꢘꢦ ꢝꢛ ꢦ ꢪ ꢝꢛ ꢛ ꢝ ꢘꢞꢫꢧ
ꢀꢛ ꢚ ꢦꢡꢠ ꢞ ꢗꢚ ꢘ ꢣꢛ ꢚ ꢠ ꢢ ꢟ ꢟ ꢗꢘ ꢬ ꢦꢚ ꢢ ꢟ ꢘꢚꢞ ꢘꢢ ꢠꢢ ꢟꢟ ꢝꢛ ꢗꢥ ꢫ ꢗꢘꢠ ꢥꢡꢦ ꢢ ꢞꢢ ꢟꢞꢗ ꢘꢬ ꢚꢙ ꢝꢥ ꢥ ꢣꢝ ꢛ ꢝꢜ ꢢꢞꢢ ꢛ ꢟꢧ
Copyright 2004, Texas Instruments Incorporated