TA2055F 2002-10-30 1 toshiba bipolar linear integrated circuit silicon monolithic TA2055F filter ic for ?? modulation system da converter TA2055F is an analog filter ic for ?? modulation system da converter. using the TA2055F in combination the tc9237bf, tc9270f (the ?? modulation system da converter with a built ? in digital filter), it is possible to construct a da conversion system with less external parts. features built ? in cr for lpfs and output (differential) amplifiers for the left and right channel. single power supply operation. noise distortion factor and s / n ratio are as follows (when operating at +5v single power supply): noise distortion factor: ? 93db (typ.) s / n: 1 00db (typ.) pin connection (top view) weight: 0.14g (typ.)
TA2055F 2002-10-30 2 block diagram description of pin functions pin no. symbol i / o function & operation remarks 1 ri + i r channel operational amplifier forward input pin. connect to vri. ? 2 gnd ? ground pin. ? 3 ro o r channel analog output pin. ? 4 vri ? reference voltage pin. (v cc / 2) see the block diagram 5 nc ? non connecting pin. nc pin is used in the open state. ? 6 lo o l channel analog output pin. ? 7 v cc ? supply voltage pin. ? 8 li + i l channel operational amplifier forward input pin. connect to vri. ? 9 gnd9 ? ground pin for l channel reverse input side filter. ? 10 li i l channel forward input pin. connect to lo of tc9270f 11 li i l channel reverse input pin. connect to lo of tc9270f 12 gnd12 ? ground pin for l channel forward input side filter. ? 13 gnd13 ? ground pin for r channel forward input side filter. ? 14 ri i r channel reverse input pin. connect to ro of tc9270f 15 ri i r channel forward input pin. connect to ro of tc9270f 16 gnd16 ? ground pin for r channel reverse input side filter. ?
TA2055F 2002-10-30 3 maximum ratings (ta = 25c) characteristic symbol rating unit supply voltage v cc 11 v power dissipation p d 350 (*) mw operating temperature t opr 35~85 c storage temperature t stg 55~150 c (*) reduce 2.8mw / c at ta = above 25c. electrical characteristics (unless otherwise specified, v cc = 5v, ta = 25c) characteristic symbol test cir cuit test condition min. typ. max. unit operating supply voltage v cc ? ta = 35~85c 4.5 5.0 10 v i ccq (1) at no signal 7.5 10.0 12.5 operating supply current i ccq (2) ? at no signal, v cc = 10v 8.2 11.0 13.8 ma reference voltage vri ? ? 2.45 2.50 2.55 v thd (1) 1khz, v o = 950mv rms ? 93 90 thd (2) 10khz, v o = 950mv rms ? 93 90 noise distortion factor thd (3) 1 1khz, v o = 95mv rms ? 78 75 db cross talk ct 1 1khz, v o = 950mv rms ? 100 95 db att (1) 40khz, v o = 10dbv rms 0.51 0.71 1.41 attenuation att (2) 1 80khz, v o = 10dbv rms 1.50 2.70 4.50 db max. output level v omax 1 1khz, thd = 1% 1.20 1.25 ? v rms differential balance g vb 1 1khz, 1.1dbv rms in phase input ? ? 40 db lr output difference g vd 1 1khz, 1.1dbv rms differential input ? 0 0.5 db (note 1) when the tc9270f and +5v single power supply are operated : full scale = 950mv rms (typ.). (note 2) the amount of attenuations is based on 1khz, v o = 10dbv rms . (note 3) measuring circuit 1: indicates the measuring circuit.
TA2055F 2002-10-30 4 test circuit 1 sw 1 sw 2 sw 3 measuring item l l ? operating supply voltage, reference voltage l h l cross talk (r l) h l l cross talk (l r) h h l noise distortion factor, attenuation, maximum output level, lr output difference h h h difference balance
TA2055F 2002-10-30 5 application circuit example (cautions) quality of crystal oscillation waveform largely effects s / n ratio. further, this is also true when system clock is input externally through the xi pin of pin( 1 3). suppress glitch of input signals (lrck, bck, data) as could as possible. the wiring between the tc9270f output and the analog filter amplifier input must be made the shortest the capacitor between v da and gnda shall be connected as close to the pin as possible. nc pin is used in the open state.
TA2055F 2002-10-30 6 package dimensions weight: 0.14g (typ.)
TA2055F 2002-10-30 7 toshiba is continually working to improve the quality and reliability of its products. nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. it is the responsibility of the buyer, when utilizing toshiba products, to comply with the standards of safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of such toshiba products could cause loss of human life, bodily injury or damage to property. in developing your designs, please ensure that toshiba products are used within specified operating ranges as set forth in the most recent toshiba products specifications. also, please keep in mind the precautions and conditions set forth in the ?handling guide for semiconductor devices,? or ?toshiba semiconductor reliability handbook? etc.. the toshiba products listed in this document are intended for usage in general electronics applications (computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances, etc.). these toshiba products are neither intended nor warranted for usage in equipment that requires extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or bodily injury (?unintended usage?). unintended usage include atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, medical instruments, all types of safety devices, etc.. unintended usage of toshiba products listed in this document shall be made at the customer?s own risk. the products described in this document are subject to the foreign exchange and foreign trade laws. the information contained herein is presented only as a guide for the applications of our products. no responsibility is assumed by toshiba corporation for any infringements of intellectual property or other rights of the third parties which may result from its use. no license is granted by implication or otherwise under any intellectual property or other rights of toshiba corporation or others. the information contained herein is subject to change without notice. 000707eb a restrictions on product use
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