Texas Instruments PCM1774RGPT

Description
The PCM1774 is a low-power stereo DAC designed for portable digital audio applications. It integrates a headphone amplifier, line amplifier, line input, boost amplifier, programmable gain control, analog mixing, and sound effects. The device is available in a small-footprint, 4-mm x 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.

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 R₁ = 16Ω
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 fs/384 fs), 12/24, 13/26, 13.5/27, 19.2/38.4, 19.68/39.36 MHz
2 (CTM) 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 x 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