BA7786FP-YE2 Rohm Semiconductor, BA7786FP-YE2 Datasheet
BA7786FP-YE2
Specifications of BA7786FP-YE2
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BA7786FP-YE2 Summary of contents
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... BA7786FP-Y / BA7787FS The BA7786FP-Y and BA7787FS are sound amplifiers designed for notebook computers, and contain a suspend function and input pins for the system beep and PM beep sounds used by notebook computers. In short, this single- chip IC contains all the analog audio components needed for notebook computers. ...
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... BTL speaker Rch output (reverse) BTL speaker Rch output (forward input ON / OFF control Speaker Vcc Speaker Rch input Speaker Lch input Headphone ground Headphone Rch output Headphone Lch output Headphone Vcc = 5.0V) in Fig. 1, entitled "Measurement circuit diagram," BA7786FP-Y / BA7787FS Voltage Type — ...
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... SP IN input ON / OFF control BTL speaker output (reverse) BTL speaker output (forward) SYSTEM BEEP IN output level setting Speaker Vcc Headphone ground Headphone Rch output Headphone Lch output Headphone Vcc = 5.0V) in Fig. 2, entitled "Measurement circuit diagram," BA7786FP-Y / BA7787FS Pin voltage Pin type — B (NPN) 2 ...
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... HP V 100k 10k Note) All figures are design values, and do not represent guaranteed performance SUSPEND (12pin) SP SUSPEND (12pin 100k 10k HP SUSPEND (9pin) SP SUSPEND (10pin) CC 10k 3pin BA7786FP-Y / BA7787FS LINE MIX ON / OFF (18pin) CC 12,13pin LINE MIX ON / OFF (12pin 9,10pin 100k 18pin 20k ...
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... GND — 0.4 V 4.3 — GND — 0.4 4.3 — GND — 0.4 V 4.3 — (HP SUSPEND (SP SUSPEND BA7786FP-Y / BA7787FS = 5.0V 1kHz) CC Conditions Measurement circuit Fig Fig Fig.1 1 Fig.1 2 Fig ground level differential Fig.1 2 Fig.1 2 Fig Fig.1 M Fig.1 P-P Fig.1 Fig.1 1 Fig ...
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... GND — 0.4 V 4.3 — GND — 0.4 V 4.3 — GND — 0.4 V 4.3 — (HP SUSPEND (SP SUSPEND BA7786FP-Y / BA7787FS Conditions Measurement circuit Fig Fig Fig.2 1 Fig.2 2 Fig ground level differential Fig.2 2 Fig.2 2 Fig Fig.2 M Fig.2 P-P Fig.2 Fig.2 1 Fig.2 1 Fig.2 2 Fig ...
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... Multimedia ICs • Measurement circuit BA7786FP Fig. 1 BA7786FP-Y / BA7787FS ...
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... Multimedia ICs BA7787FS Fig. 2 BA7786FP-Y / BA7787FS ...
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... P-P OFF is at the high or low level. 7 (5) Gain between LINE IN L and LCH OUT This gain (G This path is not controlled by EVR or the mute function. (dB) BA7786FP-Y / BA7787FS 32k G 20 LOG (dB 20k G 20 LOG (dB (BA7786FP-Y only, BA7787FS: pin calculated as follows LOG (dB (BA7786FP-Y) 9 ...
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... GND and between pin 8 and GND, and is calcu- lated as follows. V – 0 0.25 HS 13k + This path is not controlled by EVR or the mute function. (7) EVR control characteristics The headphone amplifier is controlled by changing the resistive potential division ratio P BA7786FP-Y / BA7787FS ...
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... Turns the headphone suspend function on and off. Control signal SUSPEND HP SUSPEND • Because the BA7786FP-Y has a pull-up resistor, this is possible even when open (if at the high level). (3) SP SUSPEND • Turns the speaker suspend function on and off. Control signal SUSPEND SP SUSPEND • ...
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... LINE MIX ON / OFF BIAS 390k SUSPEND 13 SP SUSPEND Fig. 3 FUNCTION L HP MUTE ON HP OPERATED HP SUSPENDED SP OPERATED SP SUSPENDED LCH SP OFF LINE MIX OFF BA7786FP-Y / BA7787FS 100 HP JACK + 24 100 + 23 HP GND 22 15k 15k MONO / GND 14 TERMINAL FORM H HP MUTE OFF 100k PULL UP 100k PULL UP ...
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... LINE MIX ON / OFF BIAS SUSPEND 10 SP SUSPEND Fig. 4 FUNCTION L HP MUTE ON HP MUTE OFF HP OPERATED HP SUSPENDED SP OPERATED SP SUSPENDED LINE MIX OFF LINE MIX ON BA7786FP-Y / BA7787FS 100 HP JACK + 19 100 + 18 HP GND 390k GND 11 TERMINAL FORM H 100k PULL UP PNP BASE PNP BASE 100k PULL UP 13 ...
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... CC DIN AUDIO – 50 – 60 – 70 – GND L – 90 – 100 0 10 100 1k 10k FREQUENCY: f (Hz) Fig AMP MUTE characteristics BA7786FP-Y / BA7787FS 10 0 – 100 V = 5.0V M – 20 INPUT: LINE IN L – 30 OUTPUT: HP OUT L V – – – 60 DIN AUDIO – 70 – ...
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... LCH ON / OFF MIX ON / OFF VR1 0 0 BIAS 0 R10 7 390k 0 0 SUSPEND 12 SP SUSPEND 13 Fig. 13 BA7786FP-Y / BA7787FS 0.1 100 C11 C12 R15 HP JACK 24 100 47 C10 R14 23 100 GND HP OUT L 22 R17 HP GND R16 15k 15k HP OUT R 0 GND C14 0.1 20 C13 100 0.1 ...
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... MIX ON / OFF VR1 BIAS 0 R10 0.1 7 R11 C5 0.1 R12 SUSPEND 10 SP SUSPEND Fig. 14 BA7786FP-Y / BA7787FS 0.1 100 C11 C12 R15 19 47 100 C10 R14 18 47 100 C9 HP GND 100 + 0 R13 BEEP LEVEL 15 390k GND GND HP JACK HP OUT L HP GND HP OUT R ...
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... The bypass capacitor for HP V • The coupling capacitor for C13 • The coupling capacitor for C14 • Used to change the pin 1 DC voltage VR1 BA7786FP-Y / BA7787FS Use (used for low-frequency ripple rejection) CC (used for high-frequency ripple rejection) CC (used for low-frequency ripple rejection) ...
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... Use (See section 4, on circuit operation for the formula.) (used for low-frequency ripple rejection) CC (used for high-frequency ripple rejection) CC (used for low-frequency ripple rejection) CC (used for high-frequency ripple rejection) CC BA7786FP-Y / BA7787FS Standard value 27k 27k 27k 27k 27k 27k 33k 33k ...
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... CC CC (5) Configure the PM BEEP IN pin of BA7786FP-Y as shown below in order to prevent oscillation in the IC. (6) The LCH OUT pin (pin 8) of BA7786FP-Y should be grounded when not used. (7) When switching the suspend function popping nois- es may occur. If this bothers, take measures for elimi- nating it by attachig external componets. ...
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... MUTE: MUTE control switch HP SUS: HP suspend control switch SP SUS: SP suspend control switch MIX ON / OFF: LINE MIX ON / OFF switch (On this board, pin 12 automatically drops to the ground level when a headphone is plugged into the jack.) LCH ON / OFF: SP AMP LCH ON / OFF switch BA7786FP-Y / BA7787FS SP OUT2 R SP OUT1 R SP ...
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... Multimedia ICs • Board pattern diagram BA7786FP-Y BA7786FP-Y / BA7787FS Fig ...
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... MUTE: MUTE control switch HP SUS: HP suspend control switch SP SUS: SP suspend control switch MIX ON / OFF: LINE MIX ON / OFF switch (On this board, pin 12 automatically drops to the ground level when a headphone is plugged into the jack.) BA7786FP-Y / BA7787FS SP OUT2 SP OUT1 SP GND SP ...
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... Multimedia ICs • Board pattern diagram BA7787FS BA7786FP-Y / BA7787FS Fig ...
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... Multimedia ICs • External dimensions (Units: mm) BA7786FP-Y 13.6 0.2 2.75 0 1.95 0.1 0.36 0.1 0.8 HSOP25 24 BA7787FS 0.3Min. 0.15 BA7786FP-Y / BA7787FS 8.7 0 0.8 0.36 0.1 0.3Min. SSOP-A20 0.15 ...