Technical Note

5/17

www.rohm.com

2010.06 - Rev.A

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

BD3811K1,BD3818KS

2) BD3818KS (Ta=25℃ VCC=7V, VEE=-7V, f=1kHz, Vin=500mVrms, RL=10kΩ, Rg=600Ω

Input gain=0dB (FL,FR), 12.6dB (C,LS,RS), 15.6dB (SUB), Master volume=0dB, Bass and Treble =0dB,

Gain amp=0dB (C,LS,RS,SUB), C,LS and RS mixing=OFF, unless otherwise noted.)

Parameter

Symbol

Limits

Unit

Conditions

Min.

Typ.

Max.

Circuit Current

IQ

―

28

40

mA

No signal

Output Voltage Gain 1 Line

GV1

3

5

7

dB

Measure : Pin36,39

Vin =0.5Vrms, Line Mode

Output Voltage Gain 1 DVD

GV1DVD

-2

0

2

dB

Measure : Pin36,39

Vin =0.5Vrms, DVD Mode

Output Voltage Gain 1 DSP

GV1DSP

10

12

14

dB

Measure : Pin36,39

Vin =0.2Vrms, DSP Mode

Output Voltage Gain 1 EXT

GV1EXT

-2

0

2

dB

Measure : Pin36,39

Vin =0.5Vrms, EXT Mode

Output Voltage Gain 2

GV2

10.6

12.6

14.6

dB

Measure : Pin 23,25,27

Vin =0.2Vrms

Output Voltage Gain 3

GV3

13.6

15.6

17.6

dB

Measure : Pin 21

Vin =0.15Vrms

Total Harmonic Distortion

Ratio 1

THD1

―

0.002

0.03

%

Measure : Pin36,39

BW=400～30kHz

Vin =0.5Vrms, Line Mode

Total Harmonic Distortion

Ratio 2

THD2

―

0.003

0.03

%

Measure : Pin 23,25,27

BW=400～30kHz

Vin =0.3Vrms

Total Harmonic Distortion

Ratio 3

THD3

―

0.003

0.03

%

Measure : Pin 21

BW=400～30kHz

Vin =0.3Vrms

Maximum Output Voltage

Vomax

3.6

4.3

―

Vrms

Measure : Pin36,39

THD=1%

Residual Noise Voltage 1

―

2.7

9

µVrms

Measure : Pin36,39

Rg=0Ω,Volume= -∞

BW=IHF-A

Residual Noise Voltage 2

―

1.0

6

µVrms

Measure : Pin 21,23,25,27

Rg=0Ω, Volume= -∞BW=IHF-A,

Output amp=0dB

Cross-talk between Selectors

CTS

―

-90

-75

dB

Measure : Pin36,39

Rg=0Ω, BW=IHF-A

Cross-talk between Channels

Lch

Rch

CTCLR

―

-90

-75

dB

Measure : Pin36(OUTFR)

Rg=0Ω, BW=IHF-A

Reference : Pin39(OUTFL)=1Vrms

Cross-talk between Channels

Rch

Lch

CTCRL

―

-90

-75

dB

Measure : Pin39(OUTFL)

Rg=0Ω, BW=IHF-A

Reference : Pin36(OUTFR)=1Vrms

Cross-talk between Channels

LSch

RSch

CTCLRS

―

-90

-75

dB

Measure : Pin 23(OUTRS)

Rg=0Ω, BW=IHF-A

Reference :Pin 25(OUTLS) =1Vrms

Cross-talk between Channels

RSch

LSch

CTCRLS

―

-90

-75

dB

Measure : Pin 25(OUTLS)

Rg=0Ω, BW=IHF-A

Reference :Pin 23(OUTRS) =1Vrms

Cross-talk between Channels

Cch

SUBch

CTCCSU

―

-85

-70

dB

Measure : Pin 21(OUTSUB)

Rg=0Ω, BW=IHF-A

Reference :Pin 27(OUTC) =1Vrms

Cross-talk between Channels

SUBch

Cch

CTCSUC

―

-90

-75

dB

Measure : Pin 27(OUTC)

Rg=0Ω, BW=IHF-A

Reference :Pin 21(OUTSUB) =1Vrms