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BA7787FS Datasheet(PDF) 14 Page - Rohm

Part # BA7787FS
Description  Headphone / speaker amplifier for notebook computers
PDF  24 Pages
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Manufacturer  ROHM [Rohm]
Direct Link  http://www.rohm.com
Logo ROHM - Rohm

BA7787FS Datasheet(HTML) 14 Page - Rohm

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14
Multimedia ICs
BA7786FP-Y / BA7787FS
INPUT: LINE IN L
OUTPUT: HP OUT L
VIN = – 30dBV
HP VCC = 5.0V
SP VCC = 5.0V
VE = 5.0V
100
100k
10k
1k
1M
10M
– 20
FREQUENCY: f (Hz)
– 30
– 40
– 50
– 60
– 70
– 80
– 90
– 100
– 180
+ 180
Fig. 5 HP AMP frequency
characteristics
•Electrical characteristic curves
INPUT: LINE IN L
OUTPUT: HP OUT L
f = 1kHz
HP VCC = 5.0V
SP VCC = 5.0V
VE = 5.0V
B.W. = 0.4 ~ 30kHz
RL = 100
Ω
RL =
∞
– 40
– 10
– 20
– 30
0
INPUT LEVEL: VIN (dBV)
10
1
0.1
0.01
Fig. 6 HP AMP input level vs.
output distortion
INPUT: LINE IN L
OUTPUT: HP OUT L
VIN = – 6.4dBV
HP VCC = 5.0V
SP VCC = 5.0V
VE = 5.0V
DIN AUDIO
VM = GND
VM = 5.0V
10
1k
100
10k
100k
10
0
FREQUENCY: f (Hz)
– 10
– 20
– 30
– 40
– 50
– 60
– 70
– 90
– 80
– 100
Fig. 7 HP AMP MUTE
characteirstics
INPUT: LINE IN L
OUTPUT: HP OUT L
VIN = – 10dBV, f = 1kHz
HP VCC = 5.0V
SP VCC = 5.0V
DIN AUDIO
0
0.5
1.0
0
VOLTAGE RATIO: VE / VCC
– 50
– 100
Fig. 8 HP AMP EVR
characteristics
INPUT: LINE IN L
OUTPUT: HP OUT L
VIN = 5.0Vpp, f = 10kHz
HP VCC = 5.0V
SP VCC = 5.0V
VE = 5.0V
10k
100k
1M
BA7787FS: 15pin
BA7786FP-Y: 7pin
RESISTOR: R (
Ω)
1.0
0.1
Fig. 9 SYSTEM BEEP output level vs.
external resistor.
INPUT: SP IN
OUTPUT: SP OUT 1
VIN = – 30dBV
HP VCC = 5.0V
SP VCC = 5.0V
100
100k
10k
1k
1M
10M
– 20
FREQUENCY: f (Hz)
– 100
Fig.10 SP AMP frequency
characteristics
INPUT: SP IN
OUTPUT: SP OUT 1 / 2, f = 1kHz
HP VCC = 5.0V, SP VCC = 5.0V
VE = 5.0V, B.W. = 0.4 ~ 30kHz
RL =
∞
RL = 8
Ω
– 50
– 10
– 20
– 30
– 40
0
INPUT LEVEL: VIN (dBV)
10
1
0.1
0.01
Fig. 11 SP AMP input level vs.
output distortion
RL = speaker (8
Ω)
INPUT: SP IN
OUTPUT: SP OUT 1 / 2
VIN = – 11.6dBV
HP VCC = 5.0V
SP VCC = 5.0V
DIN AUDIO
10
1k
100
10k
100k
10
0
FREQUENCY: f (Hz)
– 10
– 20
– 30
– 40
– 60
– 50
– 70
– 80
– 90
– 100
Fig. 12 SP AMP MUTE
characteristics
VL = GND
VL = 5.0V



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