파트넘버.co.kr BA7786FP-Y 데이터시트 PDF


BA7786FP-Y 반도체 회로 부품 판매점

Headphone / speaker amplifier for notebook computers



ROHM Semiconductor 로고
ROHM Semiconductor
BA7786FP-Y 데이터시트, 핀배열, 회로
Multimedia ICs
Headphone / speaker amplifier for
notebook computers
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.
Product
BA7786FP-Y
BA7787FS
H.P.amp
Stereo
Stereo
S.P.amp
Stereo
Monaural
Other functions
SYSTEM / PM BEEP input, SUSPEND, EVR, MUTE,
BEEP level control
Applications
Notebook computers
Features
1) Stereo headphone amplifier that supports mixing
input, along with a stereo speaker amplifier
(BA7786FP-Y) or BTL monaural speaker amplifier
(BA7787FS).
2) Internal anti-pop circuit, to prevent the popping sounds
that occur when the power is turned on and off.
3) Internal electronic volume switch and mute circuit.
4) Separate suspend modes for the headphone amplifi-
er and speaker amplifier, for low-power-consumption
computers .
5) Two beep input pins, a necessity for notebook com-
puters.
Absolute maximum ratings (Ta = 25°C)
Parameter
Symbol
Power supply voltage
Power
dissipation
BA7786FP-Y
BA7787FS
Operating temperature
VCC
Pd
Topr
Storage temperature
Tstg
1 Reduced by 6.8mW for each increase in Ta of 1°C over 25°C.
2 Reduced by 6.0mW for each increase in Ta of 1°C over 25°C.
Limits
6
8501
6002
– 10 ~ + 70
– 55 ~ + 125
Unit
V
mW
°C
°C
Recommended operating conditions (Ta = 25°C)
Parameter
Symbol
Min.
Power supply voltage
VCC 4.5
Typ.
5.0
Max.
5.5
Unit
V
1


BA7786FP-Y 데이터시트, 핀배열, 회로
Multimedia ICs
Block diagram
BA7786FP-Y
25 24 23 22 21 20
HP VCC
VR VR
123 456
BA7786FP-Y / BA7787FS
19 18 17 16 15 14
SP VCC
7 8 9 10 11 12 13
Pin descriptions
BA7786FP-Y
Pin No.
Pin name
Function
Voltage
Type
1 EVR CTRL
EVR control pin
— B (NPN)
2 LINE IN L
Line Lch input
2.5 B (PNP)
3 MUTE CTRL
Headphone mute control pin
5.0 100kPULL UP
4 LINE IN R
Line Rch input
2.5 B (PNP)
5 BIAS
Bias
2.5 23.5k
6 SYSTEM BEEP IN
SYSTEM BEEP input
2.5 B (NPN)
7 BEEP LEVEL
SYSTEM BEEP IN output level setting
4.2 C (PNP) ~ 3k
8 LCH OUT
LINE IN L + SYSTEM BEEP IN output — C (PNP)
9 PM BEEP IN
PM beep input
2.5 B (NPN)
10 SP OUT1 L
BTL speaker Lch output (forward)
2.5 EF (NPN)
11 SP OUT2 L
BTL speaker Lch output (reverse)
2.5 EF (NPN)
12 HP SUSPEND
Headphone SUSPEND control
5.0 100kPULL UP
13 SP SUSPEND
Speaker SUSPEND control
5.0 100kPULL UP
14 SP GND
Speaker ground
0.0 —
15 MONO / ST
Speaker amplifier Lch ON / OFF control
5.0 100kPULL UP
16 SP OUT2 R
BTL speaker Rch output (reverse)
2.5 EF (NPN)
17 SP OUT1 R
BTL speaker Rch output (forward)
2.5 EF (NPN)
18 LINE MIX ON / OFF
SP IN L / R input ON / OFF control
5.0 100kPULL UP
19 SP VCC
Speaker Vcc
5.0 —
20 SP IN R
Speaker Rch input
2.5 B (NPN)
21 SP IN L
Speaker Lch input
2.5 B (NPN)
22 HP GND
Headphone ground
0.0 —
23 HP OUT R
Headphone Rch output
2.5 EF (NPN)
24 HP OUT L
Headphone Lch output
2.5 EF (NPN)
25 HP VCC
Headphone Vcc
5.0 —
Note) The pin formats are as follows. EF: emitter follower; B: base; C: collector; ~ : series connection.
The above values are all based on the settings (HP VCC = SP VCC = + 5.0V) in Fig. 1, entitled "Measurement circuit diagram,"
and do not guarantee standards.
2




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BA7786FP-Y amplifier

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Headphone / speaker amplifier for notebook computers - ROHM Semiconductor