AD1984A CONEXANT | Alldatasheet
Document overview
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Technical content
Features
2 stereo headphone amplifiers Line outputs and inputs Analog microphone inputs Retaskable ports 192 kHz DACs/ADCs – 2 independent stereo DAC/ADC pairs – Simultaneous record of 2 stereo channels – Simultaneous playback of 2 stereo channels – All independent sample rates, 8 kHz through 192 kHz – 16-, 20-, and 24-bit resolution – Selectable stereo mixer on outputs Stereo Digital Microphone Interface – Two 192 kHz digital microphone channels – Supports 1 or 2 microphones per pin – Selectable bit clock rates of 1.5 MHz, 2.0 MHz, and 3.0 MHz – Mono and stereo array support – All sample rates, 8 kHz through 192 kHz – 16-, 20-, and 24-bit resolution – Digital PCM gain control S/PDIF Output – Supports 44.1 Hz through 192 kHz sample rates – 16-, 20-, and 24-bit data; PCM and AC3 formats – Digital PCM gain control
9 Auxiliary Pins
Impedance and presence detection on all jacks Full analog mixer with DAC inputs 3 independent microphone bias pins Digital and analog PCBeep 3 general-purpose digital I/O (GPIO) pins 3.3 V analog supply voltage 1.7 V to 1.9 V or 3.3 V digital supply voltages 1.5 V or 3.3 V HD Audio link signaling voltage Advanced power management modes Security feature prevents unauthorized recording 48-lead, RoHS compliant QFN package Software Voice input enhancements Output enhancements
Applications
Embedded Audio Point Of Sale Systems Overview The AD1984A audio codec and software provide superior high definition audio quality and performance. The AD1984A has two 192 kHz DAC pairs, two 192 kHz ADC pairs, an S/PDIF output, a 2-channel digital microphone interface, and digital and analog PCBeep. These features make the AD1984A the right choice for embedded systems where performance is key. The AD1984A is available in a 48-lead, RoHS compliant lead frame chip scale package in both reels and trays. Block Diagram ADC0 ADC1 ADC2 S/PDIF Tx S/PDIF Tx S/PDIF Rx S/PDIF OUT 1 S/PDIF OUT 2 (HDMI) S/PDIF IN Digital and Analog PCBeep HD Audio Interface Σ Σ Σ Σ Σ Σ Σ Σ GPIO and EAPD Digital Microphone DM_DATA DM_CLK DAC0 DAC1 DAC2 DAC3 Port F Port G MONO OUT Port D Port B Port C Port E Port A Σ Part Number AD1984A Description SoundMAX HD Audio Codec
Ordering Information
Table 1. Performance Characteristics Table 2. Specifications