Technical Note

2/16

BD5423MUV

www.rohm.com

2009.06 - Rev.A

© 2009 ROHM Co., Ltd. All rights reserved.

●Absolute Maximum Ratings

A circuit must be designed and evaluated not to exceed absolute maximum rating in any cases and even momentarily, to

prevent reduction in functional performances and thermal destruction of a semiconductor product and secure useful life and

reliability.

The following values assume Ta =25℃. For latest values, refer to delivery specifications.

(Note 1) A voltage that can be applied with reference to GND (pins 5, 18, 19, 42, and 43)

(Note 2) Pd and Tjmax=150℃ must not be exceeded.

(Note 3) 114.3mm × 76.2mm × 1.6mm

FR4 2-layer glass epoxy board (Copper Area 5505mm2) installed.

If used under Ta=25℃ or higher, reduce 26.2mW for increase of every 1℃. The board is provided with thermal via.

(Note 4) 114.3mm × 76.2mm × 1.6mm

FR4 4-layer glass epoxy board (Copper Area 5505mm2) installed.

If used under Ta=25℃ or higher, reduce 38.4mW for increase of every 1℃. The board is provided with thermal via.

●Operating Conditions

The following values assume Ta =25℃. Check for latest values in delivery specifications.

Item

Symbol

Rating

Unit

Conditions

Supply voltage

+10～+16.5

V

Pin 2, 14, 15, 22, 23, 38, 39, 46, 47

Load resistance

4 ～ 16

Ω

(Note 5)

(Note 5) Pd should not be exceeded.

●Electrical Characteristics

For latest values, refer to delivery specifications.

Item

Symbol

Representative

value

Unit

Conditions

Whole circuit

Circuit current 1 (Sampling mode)

25

mA

With no signal

Circuit current 2 (Muting mode)

10

mA

MUTEX = “L”

Control circuit

“H” level input voltage

2.3～12

V

MUTEX, MS

“L” level input voltage

0～0.8

V

MUTEX, MS

Audio circuit

Voltage gain

28

dB

Maximum output power 1 (Note 6)

10

W

Ω

Maximum output power 2 (Note 6)

17

W

Ω

Total harmonic distortion (Note 6)

THD

0.1

%

Crosstalk

CT

85

dB

Ω, BW = IHF-A

Output noise voltage (Sampling mode)

80

µVrms

Rg = 0

Ω, BW = IHF-A

Residual noise voltage (Muting mode)

1

µVrms

Rg = 0

Ω, BW = IHF-A, MUTEX = “L”

Internal sampling clock frequency

250

kHz

MS = “L” (In master operation)

(Note 6)The rated values of items above indicate average performances of the device, which largely depend on circuit layouts, components, and power supplies.

The reference values are those applicable to the device and components directly installed on a board specified by us.

Item

Symbol

Rating

Unit

Conditions

Supply voltage

+20

V

Pin 2, 14, 15, 22, 23, 38, 39, 46, 47 (Note 1, 2)

Power dissipation

3.28

W

(Note 3)

4.8

W

(Note 4)

Input voltage for signal pin

-0.2 ～ +7.2

V

Pin 6, 7 (Note 1)

Input voltage for control pin

-0.2 ～ Vcc+0.2

V

Pin 28, 32 (Note 1)

Input voltage for clock pin

-0.2 ～ +7.2

V

Pin 31 (Note 1)

Operating temperature range

-40 ～ +85

℃

Storage temperature range

-55 ～ +150

℃

Maximum junction temperature

+150

℃