AD1984A High Definition Audio CODEC AudioSmart™ Product Brief Four DACs and ADCs, Line/Microphone In, Digital Microphone, and SPDIF Out Product Overview The AD1984A audio CODEC provides superior HD audio quality and performance. The AD1984A has: • • • • • Two 192kHz DAC pairs Two 192kHz ADC pairs S/PDIF output Two-channel digital microphone interface 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. Key Features • • • • • • • Two stereo headphone amplifiers Line outputs and inputs Analog microphone inputs Re-taskable ports 192kHz DACs/ADCs – Two independent stereo DAC/ADC pairs – Simultaneous record of two stereo channels – Simultaneous playback of two stereo channels – All independent sample rates, 8kHz through 192kHz – 16-bit, 20-bit, and 24-bit resolution – Selectable stereo mixer on outputs Stereo digital microphone interface – Two 192kHz digital microphone channels – Supports one or two microphones per pin – Selectable bit clock rates of 1.5MHz, 2MHz, and 3MHz – Mono and stereo array support – All sample rates, 8kHz through 192kHz – 16-bit, 20-bit, and 24-bit resolution – Digital PCM gain control S/PDIF output Conexant Confidential • www.conexant.com • 007PBR00 • • • • • • • • • • • • • • Supports 44.1Hz through 192kHz sample rates 16-bit, 20-bit, and 24-bit data; PCM and AC3 formats Digital PCM gain control—Auxiliary pins Impedance and presence detection on all jacks Full analog mixer with DAC inputs Three independent micbias pins Digital and analog PCBeep Three GPIO pins 3.3V analog supply voltage 1.7V to 1.9V or 3.3V digital supply voltages 1.5V or 3.3V HD audio link signaling voltage Advanced power management modes Security feature prevents unauthorized recording 48-lead, RoHS-compliant QFN package Applications • • Embedded audio POS systems System Block Diagram HD Audio Interface S/PDIF Rx S/PDIF IN S/PDIF Tx S/PDIF OUT 2 (HDMI) S/PDIF Tx S/PDIF OUT 1 Digital and Analog PCBeep DAC3 Σ Port F DAC2 Σ Port G DAC1 Σ DAC0 Σ GPIO and EAPD Port D MONO OUT Σ Port E Σ Port A Σ Port B Σ Port C ADC2 ADC1 ADC0 Σ Digital Microphone DM_DATA DM_CLK AD1984A High Definition Audio CODEC | AudioSmart™ Product Brief Electrical Specifications Parameter Minimum Typical Maximum Unit ADCs Resolution - 24 - Bits Gain Error (Full-scale Span Relative to the Nominal Input Voltage) - - 10 % Inter-channel Gain Mismatch (Difference of Gain Errors) - 0.2 0.5 dB ADC Offset Error - - 5 mV ADC Crosstalk - - - Line Inputs (Input L, Ground R, Read R, Input R, Ground L, and Read L) - –94 - dB Line Inputs to Other - –100 –80 dB DACs Resolution - 24 - Bits Gain Error (Full-scale Span Relative to the Nominal Input Voltage) - - 10 % Inter-channel Gain Mismatch (Difference of Gain Errors) - - 0.5 dB –104 - dB DAC Crosstalk (Input L, Zero R, Measure R_OUT, Input R, Zero L, and Measure L_OUT) Analog Mixer SNR Input to Output - 95 - dB Step Size: All Mixer Inputs - 1.5 - dB Input Gain/Attenuation Range: All Mixer Inputs –34.5 - 12 dB Ordering Information Device Set Order ID Package Type Package Operating Temperature AD1984AJCPZ* QFN 48-Lead QFN, 7x7 mm 0°C to 70°C * = Lead-free (Pb Free) and RoHS compliant www.conexant.com Headquarters: 1901 Main Street, Suite 300 Irvine, CA,92614 General Information: U.S. and Canada: 888-855-4562 | International: 1 + 949-483-3000 © 2014 Conexant Systems, Inc. All rights reserved. 007PBR00