FEATURES
· Multilevel DAC Including Headphone Amplifier
· Analog Performance (VCC, VHP = 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 RL = 16 W: 13 mW
(Stereo), 26 mW (Monaural)
· 1.6-V to 3.6-V Single Power Supply
· Low Power Dissipation: 6.5 mW at VCC, VHP =
2.4 V
· System Clock: 128 f S, 192 fS, 256 fS, 384 fS
· 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 D-S
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.