Technical Note

3/34

BD5451EFV

www.rohm.com

2011.06 - Rev.A

© 2011 ROHM Co., Ltd. All rights reserved.

●

Electrical characteristics

Output LC filter: L=10µH, C=0.1µF)

Parameter

Symbol

Limits

Unit

Conditions

Min.

Typ.

Max.

Total circuit

Circuit current

(Reset mode)

-

0.1

0.2

mA

Pin 14, 15, 16, 27, 28, No load

RSTX=0V, MUTEX=0V

Circuit current

(Mute mode)

２

-

15

25

mA

Pin 14, 15, 16, 27, 28, No load

RSTX=3.3V, MUTEX=0V

Circuit current

(Sampling mode)

-

50

80

mA

Pin 14, 15, 16, 27, 28, No load

RSTX=3.3V, MUTEX=3.3V

Open-drain terminal

Low level voltage

-

-

0.8

V

Regulator output voltage 1

4.7

5.0

5.3

V

Pin 11

Regulator output voltage 2

3.0

3.3

3.6

V

Pin 9

High level input voltage

2.0

-

3.3

V

Pin 1 ～ 6, 13

Low level input voltage

0

-

0.9

V

Pin 1 ～ 6, 13

Input current

(Input pull-down terminal)

50

66

95

μ

A

Speaker Output

Maximum output power 1

-

10

-

W

THD+n=10%

GAIN=20dB

※

6

Maximum output power 2

２

-

15

-

W

VCC=15V, THD+n=10%

GAIN =26dB

※

6

Voltage gain

19

20

21

dB

※

6

25

26

27

dB

※

6

Total harmonic distortion

THD

-

0.07

-

%

※

6

Crosstalk

CT

66

80

-

dB

※

6

PSRR

PSRR

-

70

-

dB

Vropple=1Vrms, f= 1kHz

※

6

Output noise voltage

(Sampling mode)

-

100

200

μ

Vrms

-∞dBFS, BW=IHF-A

※

6

PWM sampling frequency

-

256

-

kHz

fs=32kHz

※

6

-

352.8

-

kHz

fs=44.1kHz

※

6

-

384

-

kHz

fs=48kHz

※

6

※

6 These items show the typical performance of device and depend on board layout, parts, and power supply.

The standard value is in mounting device and parts on surface of ROHM’s board directly.