ESMT AD12250A 24 bit, 96 kHz Stereo A/D Converter input signals into 24-bit I2S digital audio data through on-chip anti-aliasing filter, multi-bit Σ-Δ modulator, decimation filter and high-pass filter which removes dc offsets. The AD12250A supports sampling frequencies from 8 kHz to 96 kHz and offers 128 FS, 256 FS, 384 FS or 512 FS system clock operation modes depending on sampling frequency and master/slave mode selection. The AD12250A is suitable for digital audio media applications which require high performance A/D conversion and low system cost. Features 24-bit I2S audio data format output Single power supply 3.3 V for analog and digital Single-ended analog input with internal anti-alias filter SNR: 98 dB (A-weighted) DR: 99 dB (A-weighted) THD: -91 dB Master/slave mode selection Multiple sampling frequencies (FS): 8~96 kHz System clock: 128 FS, 256 FS, 384 FS, 512 FS Power down function Internal PLL 16-pin TSSOP package ORDERING INFORMATION Applications DVD recorders CD recorders MD players HDD players A/V receivers Personal Video recorders Musical Instrument Automotive audio applications Product Number Package Comments AD12250A-SG 16L TSSOP 4.4mm Pb-free Description The AD12250A converts stereo single-ended analog Functional Block Diagram VREF AGND AVDD VCM Reference Generator AINL Anti-alias Filter Σ-Δ Modulator Decimation Filter PLL High Pass Filter SDATA Audio Data Interface AINR Anti-alias Filter Σ-Δ Modulator Decimation Filter High Pass Filter MCLK BCLK LRCLK Control Interface DGND DVDD M/S Elite Semiconductor Memory Technology Inc. MSEL PD SRSEL Publication Date :Nov. 2005 Revision : 1.0 1/13 ESMT AD12250A Pin Assignment SRSEL 1 16 M/S MCLK 2 15 VREF MSEL 3 14 AGND SDATA 4 13 AVDD DGND 5 12 AINR DVDD 6 11 VCM BCLK 7 10 AINL LRCLK 8 9 PD AD12250A (Top View) Pin Description Pin Name Type Description Characteristics 1 SRSEL I 48kHz/96kHz sample rate selection 5V tolerant Schmitt trigger input buffer 2 MCLK I Master clock input 5V tolerant Schmitt trigger input buffer 3 MSEL I MCLK divided-by-2 selection in master mode 5V tolerant Schmitt trigger input buffer 4 SDATA O Serial audio data output 5 DGND P Digital ground 6 DVDD P Digital supply 7 BCLK I/O Bit clock input/output (64Fs) 5V tolerant Schmitt trigger input buffer 8 LRCLK I/O Left/Right clock input/output (Fs) 5V tolerant Schmitt trigger input buffer 9 PD I Power down, low active 5V tolerant Schmitt trigger input buffer 10 AINL I Left channel analog input 11 VCM O Common-mode voltage 12 AINR I Right channel analog input 13 AVDD P Analog supply 14 AGND P Analog ground 15 VREF O Positive reference voltage 16 M/ S I Master/Slave mode selection 5V tolerant Schmitt trigger input buffer Package Options Package Type Part Number Thermal Information 16L TSSOP 4.4mm AD12250A-SG θJA ≅ 60 °C/W (Condition: still air) Elite Semiconductor Memory Technology Inc. Publication Date :Nov. 2005 Revision : 1.0 2/13 ESMT AD12250A Absolute Maximum Ratings Symbol Parameter Min Max Units DVDD Supply for Digital Circuit 0 3.6 V AVDD Supply for Analog Circuit 0 3.6 V Analog Input Voltage AGND AVDD V Digital Input Voltage DGND DVDD V Storage Temperature -65 150 o 85 o Tstg Ta Ambient Operating Temperature -40 C C Recommended Operating Conditions Symbol Parameter Min Typ Max Units DVDD Supply for Digital Circuit 3.0 3.3 3.6 V AVDD Supply for Analog Circuit 3.0 3.3 3.6 Ta Ambient Operating Temperature 0 70 V o C Digital Characteristics Symbol Parameter Min VIH High-Level Input Voltage 2.0 VIL Low-Level Input Voltage VOH High-Level Output Voltage VOL Low-Level Output Voltage CI Input Capacitance Typ Max Units V 0.8 V 2.4 V 0.4 V 6.4 pF Power Supply Characteristics Condition: TA = 25 °C, FS = 48 kHz, MCLK = 256 FS, slave mode, full-scale 1 kHz input signal Symbol Parameter AVDD Min Typ Max Units Supply for Analog Circuit 3.0 3.3 3.6 V DVDD Supply for Digital Circuit 3.0 3.3 3.6 V IA Analog Power Supply Current AVDD = 3.3 V 18 mA ID Digital Power Supply Current DVDD = 3.3 V 12 mA Power Consumption Normal Operation, AVDD, DVDD = 3.3 V 99 mW Power Down <0.5 μW 1 kHz signal at AVDD 56 dB PC PSRR Power Supply Rejection Ratio (Note1) Condition Note1: PSRR = 56dB for 1μF capacitor on VCM pin and 36dB for 0.1μF capacitor on VCM pin. Elite Semiconductor Memory Technology Inc. Publication Date :Nov. 2005 Revision : 1.0 3/13