BA7786FP-Y View Datasheet(PDF) - ROHM Semiconductor

Part Name

Description

Manufacturer

BA7786FP-Y

Headphone / speaker amplifier for notebook computers

ROHM Semiconductor 

Multimedia ICs

BA7786FP-Y / BA7787FS

•Electrical characteristics (unless otherwise noted, Ta = 25°C, HP VCC = SP VCC = 5.0V, f = 1kHz)

BA7786FP-Y

Parameter

Symbol Min. Typ. Max. Unit

〈Supply current〉

Supply current

ICC

3.52 4.82 7.64 mA

Supply current SUSPEND

ICCS

175 240 410 µA

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

Output voltage level

VOHP – 7.4 – 4.0 – 1.5 dBV

Distortion

THDHP

—

0.1 1.0

%

EVR variation range

GEVR

70 90 — dB

Maximum output level

VOMHP – 1.6 + 0.6

— dBV

Output residual noise

VONHP

— – 80 – 73 dBV

Interchannel crosstalk

CTHP

— – 79 – 70 dBV

Muting level

MTHP

— – 94 – 83 dBV

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

Output voltage level

VOHB

0.22 0.32 0.42 VP-P

Input threshold level

VHBH

4.5

—

5.0 VP-P

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

Output voltage level

VOSP – 1.4 + 2.0 + 4.5 dBV

Distortion

THDSP

—

0.4 1.5

%

Maximum output level

VOMSP + 3.5 + 5.7

— dBV

Output residual noise

VONSP

— – 90 – 80 dBV

Interchannel crosstalk

CTSP

— – 78 – 70 dBV

LINE MIX OFF level

VOOFFSP

— – 78 – 70 dBV

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

Output level

VOSB – 7.4 – 4.0 – 1.5 dBV

Conditions

Measurement circuit

No input, SP OUT = no load

No input, VH = VS = H

Fig.1

Fig.1

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.1

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VIN = 5.0VP-P

Fig.1

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VIN = – 10.0dBV

VIN = – 10.0dBV∗1

THD = 1%∗1

Rg = 1kΩ∗2

VIN = – 12.0dBV∗2

VIN = – 12.0dBV∗2, VL = L

VIN = – 10.0dBV

Fig.1

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〈MUTE CTRL〉 (pin 13)

HP MUTE ON holding voltage

VML

GND —

0.4

V

HP MUTE OFF holding voltage VMH

4.3

—

VCC

V

〈HP SUSPEND〉 (pin 12)

HP SUSPEND holding voltage VHL

GND —

0.4

V

HP SUSPEND holding voltage VHH

4.3

—

VCC

V

〈SP SUSPEND〉 (pin 13)

HP SUSPEND holding voltage VSL

GND — 0.4

V

HP SUSPEND holding voltage VSH

4.3

—

VCC

V

〈MONO / STEREO〉 (pin 15)

MONAURAL holding voltage

VNL

GND — 0.4

V

STEREO holding voltage

VNH

4.3

—

VCC

V

〈LINE MIX ON / OFF〉 (pin 18)

LINE MIX OFF holding voltage VLL

GND — 0.4

V

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)

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