Technical Note

2/9

www.rohm.com

2010.06 - Rev.A

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

BD3812F

●

Electrical characteristics

Ta=25℃, VCC=7V, VEE＝-7V, f=1kHz, Vin=1Vrms, RL=10kΩ, Rg=600Ω, Master volume=0dB, Output gain=0dB , unless

otherwise specified.

Parameter

Symbol

Limits

Unit

Conditions

Min.

Typ.

Max.

Circuit current

VCC

IQ

―

2

6

mA

No signal

VEE

-6

-2

―

Output voltage gain

Gv

-2

0

2

dB

Measure : Pin14, 13

Total harmonic distortion ratio

THD

―

0.005

0.09

%

Measure : Pin14, 13

BW=400～30kHz

Maximum output voltage

Vomax

3.4

4.2

―

Vrms

Measure : Pin14, 13

THD=1%

Output noise voltage

Vno

―

1.2

5

µVrms Measure : Pin 14, 13

Rg=0Ω, BW=IHF-A

Input impedance

Rin

20

30

40

kΩ

Measure : Pin1, 3

Cross talk between channels

1ch→2ch

CTC12

―

-100

-70

dB

Measure : Pin13(OUT2)

Rg=0Ω, BW=IHF-A

Reference : Pin14(OUT1)=1Vrms

Cross talk between channels

2ch→1ch

CTC21

―

-100

-70

dB

Measure : Pin14(OUT1)

Rg=0Ω, BW=IHF-A

Reference : Pin13(OUT2)=1Vrms

Volume control range

GVR

-106

-103

-100

dB

Measure : Pin 14, 13

Vin=3Vrms

Volume set error 1

VE1

-2

0

2

dB

Measure : Pin 14, 13

0 to –53dB, Vin=3Vrms

Volume set error 2

VE2

-3

0

3

dB

Measure : Pin 14, 13

-54 to –103dB, Vin=3Vrms

Maximum attenuation

Vmin

―

-118

-105

dB

Measure : Pin 14, 13

BW=IHF-A, Vin=3Vrms

Output gain control range

GOG

16

18

20

dB

Measure : Pin 14, 13

Vin=0.4Vrms

Output gain set error

GOE

-2

0

-2

dB

Measure : Pin 14, 13

Vin=0.4Vrms

* This product is not of “anti radiation design”.