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BU9458KV Datasheet, PDF (2/5 Pages) Rohm – USB host AAC+WMA+MP3 Decoder LSI | |||
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âElectrical characteristics
ï¼Unless specified, Ta=25âãVDD1=3.3V, DVSS=AVSSC=VSS_PLL=DAVSS=0V, XIN_PLL=16.9344MHzï¼
Parameter
Symbol
MIN.
Limits
TYP.
MAX.
Unit
Condition
<Total >
Circuit current (VDD1 USB1)
IDD1USB1
-
65
80
mA *1 When USB memory is played.
Circuit current (VDD1 SD1)
IDD1SD1
-
35
50
mA *1 When SD card is played.
<Digital block>
H-Level input voltage
VIH
VDD1*0.7
ï¼
VDD1
V *3
L-Level input voltage
VIL
DVSS
ï¼
VDD1*0.3
V *3
H-Level output voltage1
L-Level output voltage1
VOH1 VDD1-0.4
ï¼
VOL1
0
ï¼
VDD1
0.4
V IOH=-1.6mA, *4
V IOL=1.6mA. *4
H-Level output voltage2
VOH2 VDD1-0.4
ï¼
VDD1
V IOH=-3.6mA, *5
L-Level output voltage2
VOL2
0
ï¼
0.4
V IOL=3.6mA, *5
H-Level output voltage3
VOH3 VDD1-0.4
ï¼
VDD1
V IOH=-0.6mA, *6
L-Level output voltage3
VOL3
0
ï¼
0.4
V IOL=0.6mA, *6
H-Level output voltage4
VOH4 VDD1-1.0
ï¼
VDD1
V IOH=-0.6mA, *7
L-Level output voltage4
VOL4
0
ï¼
1.0
V IOL=0.6mA, *7
<USB-HOST >
H-Level input voltage
VIHUSB VDD1*0.6
ï¼
VDD1
V *8
L-Level input voltage
VILUSB
AVSSC
ï¼
VDD1*0.3
V *8
Output impedance(H)
ZOH
22.0
45.0
60.0
Ω *8
Output impedance(L)
ZOL
22.0
45.0
60.0
Ω *8
H-Level output voltage
VOHUSB VDD1-0.5
ï¼
VDD1
V *8
L-Level output voltage
VOLUSB
0
ï¼
0.3
V *8
Rise/Fall time
Tr/Tf
ï¼
11
ï¼
ns *8, Output capacity 50pF
Voltage of crossing point
VCRS
ï¼
VDD1/2
ï¼
V *8, Output capacity 50pF
Range of differential input
VDIFF
0.8
ï¼
2.5
V *8
Differential input sensitivity
VSENS
0.2
ï¼
ï¼
V *8
Pull-down resistance
RPD
14.25
15.0
24.8
kΩ *8
<Audio DAC>
Distortion rate
THD
ï¼
0.02
ï¼
% 1kHz, 0dB, sine, *9
Dynamic range
DR
ï¼
88
ï¼
dB 1kHz, -60dB, sine, *9
S/N ratio
S/N
ï¼
96
ï¼
dB *9
Max output level
VSMAX
ï¼
0.92
ï¼
Vrms 1kHz, 0dB, sine, *9
*1 3.3V system I/O, Analog Power supply(VDD1), 1kHz, 0dB, sine-wave playing
*3 1-17, 19-20, 25-26, 40, 49-52, 56, 58-61, 63 pin
*4 10-11, 14-16, 48-55 pin
*5 13 pin
*6 21-23, 26 pin
*7 41 pin
*8 33, 34 pin
*9 44, 46 pin
REV. B
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