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,RL_SP=8Ω,RL_DA=20kΩ,RESETX=3.3V,MUTEX=3.3V,PDX=3.3V,
Gain=20dB,fs=48kHz)
Item Symbol
Limits Unit Conditions
Min Typ Max
Total circ uit
Circuit current ICC1 - 45 90 mA
Pin 25, 28, 29, 53, 54
No load
Circuit current
(Power down mode) ICC2 - 1.5 3 mA
Pin 25, 28, 29, 53, 54,No load
RESETX=0V,MUTEX=0V,PDX=0V
Open-drain terminal
Low level voltage VERR - - 0.8 V Pin 24,IO=0.5mA
Regulator output voltage 1 VREG_G 5.0 5.5 6.0 V Pin 1, 27
Regulator output voltage 2 VREG_3 3.0 3.3 3.6 V Pin 5
High level input voltage VIH 2.5 - 3.3 V Pin 7 ~ 18, 21
Low level input voltage VIL 0 - 0.8 V Pin 7 ~ 18, 21
Input current
(Input pull-down terminal) IIH 33 66 132 µA Pin 7 ~ 18, 21,VIN = 3.3V
Speaker Output
Maximum momentary
output power 1 PO1 - 10 - W
THD+n=10%
GAIN=26dB *7
Maximum momentary
output power 2 PO2 - 20 - W
VCC=18V, THD+n=10%
GAIN =26dB *7
Total harmonic distortion THDSP - 0.07 - % PO=1W, BW=20~20kHz *7
Crosstalk CTSP 65 80 - dB PO=1W, BW=IHF-A *7
Output noise voltage
(Sampling mode) VNO_SP - 140 280 µVrms -∞dBFS, BW=IHF-A *7
Residual noise voltage
(Mute mode) VNOR_SP - 5 10 µVrms MUTEX=0V,-∞dBFS, BW=IHF-A *7
PWM sampling frequency
fPWM1 - 512 - KHz fs=32kHz *7
fPWM2 - 705.6 - KHz fs=44.1kHz *7
fPWM3 - 768 - KHz fs=48kHz *7
DAC Output
Maximum output voltage VOMAX 0.85 1.0 - Vrms 0dBFS,THD+n=1%
Channel Balance CB -1 0 1 dB 0dBFS
Total harmonic distortion THDDA - 0.05 0.5 % -20dBFS,BW=20~20kHz
Crosstalk CTDA 65 80 - dB 0dBFS,BW=IHF-A
Output noise voltage VNO_DA - 10 20 µVrms -∞dBFS, BW=IHF-A
Residual noise voltage VNOR_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.
