saa7274 NXP Semiconductors, saa7274 Datasheet
saa7274
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saa7274 Summary of contents
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... DATA SHEET SAA7274 Audio Digital Input Circuit (ADIC) Product specification File under Integrated Circuits, IC01 INTEGRATED CIRCUITS July 1991 ...
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... Audio Digital Input Circuit (ADIC) GENERAL DESCRIPTION The SAA7274 is an Audio Digital Input Circuit (ADIC) which converts digital audio signals in accordance with the IEC/EBU standards, IEC tech. com. No. 84, secr. 50, Jan. 1987 into an equivalent binary value of data and control bits. The output function of this device is to convert the equivalent binary value of data bits (for each channel) into a serial ...
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... Philips Semiconductors Audio Digital Input Circuit (ADIC) July 1991 Fig.1 Block diagram. 3 Product specification SAA7274 ...
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... Outputs (3-state push-pull) OBSY block synchronization output signal (1/49152 system clock) OWSY word clock output signal (1/256 system clock) ODCL data clock output signal (1/4 system clock) OSDA data output signal (max. 2.5 MHz) July 1991 Fig.2 Pinning diagram. 4 Product specification SAA7274 ...
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... Fig.3. If the frequency of the biphase input signal (IBIFA) is greater or less than 1/4 of the system clock frequency then the IC generates OPHA and OREF as shown in Fig.4. July 1991 1 00010111 /4) then the IC generates OPHA and OREF as shown IOSCL 5 Product specification SAA7274 ...
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... Following a status change at the word select input (IWSEL), the data (MSB first) is output on the first negative transition of IDACL. If the number of clock pulses in a word exceeds 24, then the following bits will be internally set to zero. July 1991 . . . . . . . . . . . . 6 Product specification SAA7274 = f /4. IBIFA IOSCL = f /4. IBIFA IOSCL . . LSB ...
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... ODCL, OWSY and OBSY will be synchronized to the block preambles in the biphase input signal IBIFA. July 1991 mode category 7 Product specification SAA7274 etc ...
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... If the capacitive load is higher than specified in AC CHARACTERISTICS, a buffer circuit can be used. A suitable device is the PC74HC126 (3-state quad buffer/line driver). The input IDOEN to the SAA7274 must be made HIGH and the original 3-state enable signal must be connected to the OE inputs of the PC74HC126 (pins and 13). Because the capacitive load of the SAA7274 is very low, the loss of speed is limited ...
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... MOS devices (see “Handling MOS Devices”). July 1991 CONDITIONS SYMBOL MIN. V 0.5 DD note tot T 55 stg T 40 amb 9 Product specification SAA7274 MAX. UNIT 7 +0 500 mW +150 C +70 C ...
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... 1 1 3-state all outputs open circuit Product specification SAA7274 TYP. MAX. UNIT 250 0 0.5 V 0.4 V 0.5 V 0.4 V 0 ...
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... CONDITIONS SYMBOL Fig.5 Set-up and hold time diagram. 11 Product specification SAA7274 MIN. TYP. MAX. UNIT 1 note 1 1 note ...
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... Philips Semiconductors Audio Digital Input Circuit (ADIC) July 1991 12 Product specification SAA7274 ...
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... scale (1) ( 0.53 0.32 32.0 14.1 2.54 0.38 0.23 31.4 13.7 0.021 0.013 1.26 0.56 0.10 0.015 0.009 1.24 0.54 REFERENCES JEDEC EIAJ MO-015AD 13 Product specification SAA7274 3.9 15.80 17.15 15.24 0.25 3.4 15.24 15.90 0.15 0.62 0.68 0.60 0.01 0.13 0.60 0.63 EUROPEAN ISSUE DATE PROJECTION SOT101-1 ( max. 2.2 ...
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... 0.32 15.6 7.6 10.65 1.27 0.23 15.2 7.4 10.00 0.013 0.61 0.30 0.419 0.050 0.055 0.009 0.60 0.29 0.394 REFERENCES JEDEC EIAJ MS-013AD 14 Product specification SAA7274 detail 1.1 1.1 1.4 0.25 0.25 0.1 0.4 1.0 0.043 0.043 0.01 0.01 0.004 0.016 0.039 EUROPEAN ...
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... Use only a low voltage soldering iron (less than 24 V) applied to the flat part of the lead. Contact time must be limited to 10 seconds 300 C. When using a dedicated tool, all other leads can be soldered in one operation within seconds between 270 and 320 C. 15 Product specification SAA7274 ...
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... Philips customers using or selling these products for use in such applications their own risk and agree to fully indemnify Philips for any damages resulting from such improper use or sale. July 1991 16 Product specification SAA7274 ...