BA7786FP-Y 查看數據表（PDF） - ROHM Semiconductor

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产品描述 (功能)

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BA7786FP-Y

Headphone / speaker amplifier for notebook computers

ROHM Semiconductor 

Multimedia ICs

BA7786FP-Y / BA7787FS

BA7787FS

Parameter

Symbol Min. Typ. Max. Unit

Conditions

Measurement circuit

〈Supply current〉

Supply current

ICC

3.10 4.25 6.74 mA No input, SP OUT = no load

Fig.2

Supply current SUSPEND

ICCS

175 240 410 µA No input, VH = VS = H

Fig.2

〈HP AMP 1〉 INPUT: LINE IN L / R, OUTPUT: HP OUT L / R

Output voltage level

Distortion

EVR variation range

Maximum output level

Output residual noise

Interchannel crosstalk

Muting level

VOHP – 7.4 – 4.0 – 1.5

THDHP

—

0.1 1.0

GEVR

70 90 —

VOMHP

VONHP

CTHP

MTHP

– 1.6

—

—

—

+ 0.6

– 80

– 79

– 94

—

– 73

– 70

– 83

dBV

%

dB

dBV

dBV

dBV

dBV

VIN = – 10.0dBV

VIN = – 10.0dBV∗1

VIN = – 10.0dBV∗2

VE = HP VCC→VE = ground level differential

THD = 1%∗1

Rg = 1kΩ∗2

VIN = – 7.0dBV∗2

VIN = – 7.0dBV∗2, VM = L

Fig.2

Fig.2

Fig.2

Fig.2

Fig.2

Fig.2

Fig.2

〈HP AMP 2〉 INPUT: SYSTEM BEEP IN, OUTPUT: HP OUT L / R

Output voltage level

VOHB

0.22 0.32 0.42 VP-P VIN = 5.0VP-P

Fig.2

Input threshold level

VHBH

4.5

—

5.0 VP-P

Fig.2

〈SP AMP 1〉 INPUT: SP IN L / R, OUTPUT: SP OUT L / R

Output voltage level

Distortion

Maximum output level

Output residual noise

Interchannel crosstalk

LINE MIX OFF level

VOSP

THDSP

VOMSP

VONSP

CTSP

VOOFFSP

– 1.4

—

+ 3.5

—

—

—

+ 2.0

0.4

+ 5.7

– 90

– 78

– 78

+ 4.5

1.5

—

– 80

– 70

– 70

dBV

%

dBV

dBV

dBV

dBV

VIN = – 10.0dBV

VIN = – 10.0dBV∗1

THD = 1%∗1

Rg = 1kΩ∗2

VIN = – 12.0dBV∗2

VIN = – 12.0dBV∗2, VL = L

Fig.2

Fig.2

Fig.2

Fig.2

Fig.2

Fig.2

〈SP AMP 2〉 INPUT: PM BEEP IN, OUTPUT: SP OUT L / R

Output level

VOSB – 7.4 – 4.0 – 1.5 dBV VIN = – 10.0dBV

Fig.2

〈Control threshold voltage〉

〈MUTE CTRL〉 (pin 3)

HP MUTE ON holding voltage

VML

GND — 0.4

V

—

Fig.2

HP MUTE OFF holding voltage VMH

4.3

—

VCC

V

—

Fig.2

〈HP SUSPEND〉 (pin 9)

HP SUSPEND holding voltage VHL

GND — 0.4

V

—

Fig.2

HP SUSPEND holding voltage VHH

4.3

—

VCC

V

—

Fig.2

〈SP SUSPEND〉 (pin 10)

SP SUSPEND holding voltage

VSL

GND — 0.4

V

—

Fig.2

SP SUSPEND holding voltage VSH

4.3

—

VCC

V

—

Fig.2

〈LINE MIX ON / OFF〉 (pin 12)

LINE MIX OFF holding voltage VLL

GND — 0.4

V

—

Fig.2

LINE MIX ON holding voltage

VLH

4.3

—

VCC

V

—

∗1: B.W. = 0.4 ~ 30kHz

∗2: DIN audio mode settings are as follows, unless otherwise noted:

VE = HP VCC (EVR = Max.), VM = H (HP MUTE OFF), VH = L (HP SUSPEND), VS = L (SP SUSPEND), VL = H (LINE MIX ON),

VN = H (STEREO)

Fig.2

6

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