Technical Note
3/30
BD5446EFV
www.rohm.com
2010.05 - Rev.B
© 2010 ROHM Co., Ltd. All rights reserved.
●
Electrical characteristics
(Unless otherwise specified Ta=25
℃
,Vcc=13V,f=1kHz,R
L_SP
=8
Ω
,R
L_DA
=20k
Ω
,RESETX=3.3V,MUTEX=3.3V,PDX=3.3V,
Gain=20dB,fs=48kHz)
Item Symbol
Limits
Unit Conditions
Min Typ Max
Total circuit
Circuit current
I
CC1
- 45
90
mA
Pin 25, 28, 29, 53, 54
No load
Circuit current
(Power down mode)
I
CC2
- 1.5 3 mA
Pin 25, 28, 29, 53, 54,No load
RESETX=0V,MUTEX=0V,PDX=0V
Open-drain terminal
Low level voltage
V
ERR
- - 0.8 V
Pin
24,I
O
=0.5mA
Regulator output voltage 1
V
REG_G
5.0 5.5 6.0 V Pin
1,
27
Regulator output voltage 2
V
REG_3
3.0 3.3 3.6 V Pin
5
High level input voltage
V
IH
2.5
-
3.3
V
Pin 7 ~ 18, 21
Low level input voltage
V
IL
0
-
0.8
V
Pin 7 ~ 18, 21
Input current
(Input pull-down terminal)
I
IH
33
66
132
µA
Pin 7 ~ 18, 21,VIN = 3.3V
Speaker Output
Maximum momentary
output power 1
P
O1
- 10 - W
THD+n=10%
GAIN=26dB
*7
Maximum momentary
output power 2
P
O2
- 20 - W
VCC=18V, THD+n=10%
GAIN =26dB
*7
Total harmonic distortion
THD
SP
- 0.07
- %
P
O
=1W, BW=20~20kHz
*7
Crosstalk CT
SP
65 80 - dB
P
O
=1W, BW=IHF-A
*7
Output noise voltage
(Sampling mode)
V
NO_SP
- 140
280
µVrms -
∞
dBFS, BW=IHF-A
*7
Residual noise voltage
(Mute mode)
V
NOR_SP
- 5 10
µVrms MUTEX=0V,-
∞
dBFS, BW=IHF-A
*7
PWM sampling frequency
f
PWM1
- 512
- KHz
fs=32kHz
*7
f
PWM2
-
705.6
- KHz
fs=44.1kHz
*7
f
PWM3
- 768
- KHz
fs=48kHz
*7
DAC Output
Maximum output voltage
V
OMAX
0.85
1.0 - Vrms
0dBFS,THD+n=1%
Channel
Balance
CB -1 0 1 dB
0dBFS
Total harmonic distortion
THD
DA
- 0.05
0.5 %
-20dBFS,BW=20~20kHz
Crosstalk CT
DA
65 80 - dB
0dBFS,BW=IHF-A
Output noise voltage
V
NO_DA
- 10 20
µVrms -
∞
dBFS, BW=IHF-A
Residual noise voltage
V
NOR_DA
- 3 10
µVrms
MUTEX=0V,PDX=0V,
-
∞
dBFS, BW=IHF-A
*7 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.
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