Technical Note

3/15

www.rohm.com

2010.10 - Rev.A

© 2010 ROHM Co., Ltd. All rights reserved.

BD3403FV,BD3861FS,BD3883FS



BD3861FS

VCC=9V, f=1KHz, VIN=1Vrms, Rg=600Ω, RL=10kΩ, Ta=25℃, Input Gain=0dB, VOL=0dB,

Bass, Middle, Treble=0dB, unless otherwise noted.

Parameter

Symbol

Limits

Unit

Condition

Min.

Typ.

Max.

Circuit Current

IQ

-

13.0

26.0

mA

At no signal

Output Voltage Gain

GV

-1.5

0.0

1.5

dB

GV=20log(VOUT/VIN)

Total Harmonic Distortion

THD

-

0.02

0.08

%

400 to 30kHz BPF

Maximum Output Voltage

VOM

2.0

2.5

-

Vrms

THD=1%

Output Noise Voltage

VNO

-

8.0

15.0

µVrms Rg=0kΩ, IHF-A

Cross-talk between Channels

CT

-

-80

-70

dB

Rg=0kΩ, IHF-A

6dB SW Gain

GV6

5

6

7

dB

VIN=200mVrms

GV6=20log(VOUT/VIN)

Input Voltage Gain 1

GvmaxI1

-1

*1

+1

dB

VIN=200mVrms

From 0 to 10dB

GvmaxI1=20log(VOUT/VIN)

Input Voltage Gain 2

GvmaxI2

-1.5

*1

+1.5

dB

VIN=200mVrms, From 12 to 26dB

GvmaxI2=20log(VOUT/VIN)

Input Gain Switching Step

GvmaxIst

-

2

-

dB

From 0 to 26dB

Input Total Harmonic Distortion

THDI

-

0.02

0.08

%

400 to 30kHz BPF

Input Maximum Output Voltage

VOMI

2.0

2.5

-

dB

THD=1%

Cross-talk between Selectors

CS

-

-80.0

-70.0

dB

Rg=0kΩ, IHF-A

CS=20log(VOUT/VIN)

Input Impedance

RI

35.0

50.0

65.0

kΩ

RI=51k×VOUT/ (VIN-VOUT)

E Input SW Attenuation

GRE

-

-20.0

-15.0

dB

GRE=20log(VOUT/VIN)

Input Volume 1

GIV1

-2

*1

+2

dB

From 0 to -50dB

GIV1=20log(VOUT/VIN)

Input Volume 2

GIV2

-3

*1

+3

dB

From -54 to –70dB

GIV2=20log(VOUT/VIN)

Volume Switching Step 1

GIVst1

-

2

-

dB

From 0 to -50dB

Volume Switching Step 2

GIVst2

-

4

-

dB

From -54 to –70dB

Maximum attenuation

GminI

-

-

-90.0

dB

IHF-A, GminI=20log(VOUT/VIN)

Output Volume

GOV

-1

*1

+1

dB

From 0 to –59dB

Gov=20log(VOUT/VIN)

Output Switching Step

GOVst

-

1

-

dB

From 0 to –59dB

Maximum attenuation

GminO

-

-

-90.0

dB

IHF-A

GminO=20log(VOUT/VIN)

Bass Boost Gain

GBB

-2

*1

+2

dB

VIN=200mVrms, f=90Hz,

From 0 to 14dB

GBB=20log(VOUT/VIN)

Bass Cut Gain

GBC

-2

*1

+2

dB

VIN=200mVrms, f =90Hz,

From -14 to 0dB

GBC=20log(VOUT/VIN)

Bass Switching Step

GBST

-

2

-

dB

VIN=200mVrms, f=90Hz

Middle Boost Gain

GMB

-2

*1

+2

dB

VIN=200mVrms, From 0 to 12dB

GMB=20log(VOUT/VIN)

Middle Cut Gain

GMC

-2

*1

+2

dB

VIN=200mVrms, From -12 to 0dB

GMC=20log(VOUT/VIN)

Middle Switching Step

GMST

-

2

-

dB

VIN=200mVrms

Treble Boost Gain

GTB

-2

*1

+2

dB

VIN=200mVrms,

f=10kHz From 0 to 12dB

GTB=20log(VOUT/VIN)

Treble Cut Gain

GTC

-2

*1

+2

dB

VIN=200mVrms,

f=10kHz From -12 to 0dB

GTC=20log(VOUT/VIN)

Treble Switching Step

GTST

-

2

-

dB

VIN=200mVrms, f=10kHz

Microphone Voltage Gain

GMIC

4.5

6.0

7.5

dB

VIN=200mVrms

GMIC=20log(VOUT/VIN)

*1 Typ. is set to the value descrived in condition.

Min. and Max. mean the error.