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| ESMT 24 bit, 96 kHz Stereo A/D Converter 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 AD12250A input signals into 24-bit I2S digital audio data through on-chip anti-aliasing filter, multi-bit - 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. ORDERING INFORMATION Product Number AD12250A-SG Package 16L TSSOP 4.4mm Comments Pb-free Applications DVD recorders CD recorders MD players HDD players A/V receivers Personal Video recorders Musical Instrument Automotive audio applications Description The AD12250A converts stereo single-ended analog Functional Block Diagram Elite Semiconductor Memory Technology Inc. Publication DateApr. 2007 1/13 Revision1.1 ESMT Pin Assignment SRSEL MCLK MSEL SDATA DGND DVDD BCLK LRCLK 1 2 3 4 5 6 7 8 16 15 14 AD12250A M/S VREF AGND AVDD AINR VCM AINL PD AD12250A (Top View) 13 12 11 10 9 Pin Description Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Name SRSEL MCLK MSEL SDATA DGND DVDD BCLK LRCLK PD Type I I I O P P I/O I/O I I O I P P O I Description 48kHz/96kHz sample rate selection Master clock input MCLK divided-by-2 selection in master mode Serial audio data output Digital ground Digital supply Bit clock input/output (64Fs) Left/Right clock input/output (Fs) Power down, low active Left channel analog input Common-mode voltage Right channel analog input Analog supply Analog ground Positive reference voltage Master/Slave mode selection Characteristics Schmitt trigger input buffer Schmitt trigger input buffer Schmitt trigger input buffer Schmitt trigger input buffer Schmitt trigger input buffer Schmitt trigger input buffer AINL VCM AINR AVDD AGND VREF M/ S Schmitt trigger input buffer Package Options Package Type 16L TSSOP 4.4mm Part Number AD12250A-SG Thermal Information JA 60 C/W (Condition: still air) Elite Semiconductor Memory Technology Inc. Publication DateApr. 2007 2/13 Revision1.1 ESMT Absolute Maximum Ratings Symbol DVDD AVDD Parameter Supply for Digital Circuit Supply for Analog Circuit Analog Input Voltage Digital Input Voltage Tstg Ta Storage Temperature Ambient Operating Temperature Min 0 0 AGND DGND -65 -40 Max 3.6 3.6 AVDD DVDD 150 85 Units V V V V o o AD12250A C C Recommended Operating Conditions Symbol DVDD AVDD Ta Parameter Supply for Digital Circuit Supply for Analog Circuit Ambient Operating Temperature Min 3.0 3.0 0 Typ 3.3 3.3 Max 3.6 3.6 70 Units V V o C Digital Characteristics Symbol VIH VIL VOH VOL CI Parameter High-Level Input Voltage Low-Level Input Voltage High-Level Output Voltage Low-Level Output Voltage Input Capacitance 6.4 2.4 0.4 Min 2.0 0.8 Typ Max Units V V V V pF Power Supply Characteristics Condition: TA = 25 C, FS = 48 kHz, MCLK = 256 FS, slave mode, full-scale 1 kHz input signal Symbol AVDD DVDD IA ID PC PSRR Parameter Supply for Analog Circuit Supply for Digital Circuit Analog Power Supply Current Digital Power Supply Current Power Consumption Power Supply Rejection Ratio (Note1) AVDD = 3.3 V DVDD = 3.3 V Normal Operation, AVDD, DVDD = 3.3 V Power Down 1 kHz signal at AVDD Condition Min 3.0 3.0 Typ 3.3 3.3 18 12 99 <0.5 56 Max 3.6 3.6 Units V V mA mA mW W dB Note1: PSRR = 56dB for 1F capacitor on VCM pin and 36dB for 0.1F capacitor on VCM pin. Elite Semiconductor Memory Technology Inc. Publication DateApr. 2007 3/13 Revision1.1 |
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