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16-Bit Low Power Stereo Audio DAC w/Analog Mixing Headphone Outputs
Texas Instruments
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.
Features
Analog Front End:Stereo Single-Ended InputMicrophone Amplifier (12 dB, 20 dB)Analog Back End:Stereo/Mono Line Output With VolumeStereo/Mono Headphone Amplifier With VolumeAnalog Performance:Dynamic Range: 93 dB40-mW + 40-mW Headphone Output at RL = 16 Power Supply Voltage1.71 V to 3.6 V for Digital I/O Section1.71 V to 3.6 V for Digital Core Section2.4 V to 3.6 V for Analog Section2.4 V to 3.6 V for Power Amplifier SectionLow Power Dissipation:6.4 mW in Playback, 1.8 V/2.4 V, 44.1 kHz3.3 µW in Power DownSampling Frequency: 5 kHz to 50 kHzOperation From a Single Clock Input Without PLLSystem Clock:Common-Audio Clock (256 fS/384 fS), 12/24, 13/26, 13.5/27, 19.2/38.4, 19.68/39.36 MHz2 (I2C™) or 3 (SPI) Wire Serial ControlProgrammable Function by Register Control:Digital Attenuation: 0 dB to -62 dB Digital Gain of DAC: 0, 6, 12, 18 dBPower Up/Down Control for Each Module6-dB to -70-dB Gain for Analog Outputs0/12/20 dB for Microphone Input0-dB to -21-dB Gain for Analog MixingThree-Band Tone Control and 3D SoundAnalog Mixing ControlPop-Noise Reduction CircuitShort Protection CircuitPackage: 4-mm × 4-mm QFN PackageOperation Temperature Range: -40°C to 85°CAPPLICATIONSPortable Audio Player, Cellular PhoneVideo Camcorder, Digital Still CameraPMP/DMB/PND I2C is a trademark of Philips Electronics.
Related Datasheets
| Part Number | Description | Category |
| • PCM1704 | SoundPlus™ 24-Bit, 96kHz BiCMOS Sign-Magnitude Digital-To-Analog Converter | Passives - Filters, Oscillators and Resonators |
| • PCM1770 | Low-Voltage and Low-Power Stereo Audio DAC w/Headphone Amp (Rev. E) | Passives - Filters, Oscillators and Resonators |
| • PCM1772 | Low Voltage & Low Power, Stereo Audio DAC with Lineout Amp (Rev. G) | Passives - Filters, Oscillators and Resonators |
| • PCM1794A | 14-Bit 192-kHz Sampling Advanced Segment DAC (Rev. A) | Passives - Filters, Oscillators and Resonators |
| • TLV320DAC23 | Stereo Audio D/A Converter 8- to 96-kHz with Integrated Headphone Amplifier (Rev. C) | Passives - Filters, Oscillators and Resonators |
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