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BD8271EFV-E2 Datasheet(PDF) 11 Page - Rohm

Part # BD8271EFV-E2
Description  3ch System Motor Driver For Car Audio
Download  25 Pages
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Manufacturer  ROHM [Rohm]
Direct Link  http://www.rohm.com
Logo ROHM - Rohm

BD8271EFV-E2 Datasheet(HTML) 11 Page - Rohm

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Datasheet
Datasheet
BD8271EFV
TSZ02201-0G1G0BK00250-1-2
© 2013 ROHM Co., Ltd. All rights reserved.
1.Oct.2013 Rev.002
www.rohm.com
TSZ22111・15・001
Gain calculation
1. Actuator (with pre-opamp)
RIN
INN
VC1
×2
Vo
+
Vo
-
VIN
RIN
R
R
INO
×2×VIN
×2
(Vo
+)-(Vo-) → 4 times between outputs
Vref
Vo
+
Vo
-
VC1
×2
Rf
RIN
×2×VIN
Rf
RIN
Vref
Level shift
Vref +
Vref -
Figure 11. Gain Calculation for Actuator
2. SLED (with pre-opamp)
Figure 12. Gain Calculation for SLED
L
O
O
SARNF
IN
R
V
I
R
25
.
0
V
Iopeak
L
SARNF
IN
R
R
25
.
0
V
Vopeak
2
×
2
×
R
R
=
V
V
=
Gain
IN
f
IN
O
()
dB
12
=
2
×
2
×
k
10
k
10
=
Gain
k
10
.
ex
R
=
R
F
IN
At input resistor RIN connect
[]
[]
V
/
V
R
×
R
25
.
0
×
R
R
=
V
Vopeal
V
/
A
R
25
.
0
×
R
R
=
V
Iopeak
L
SARNF
IN
f
IN
SARNF
IN
f
IN
 
 
RIN
INN
VC2
VIN
RIN
R
Rf
INO
SARNF
RSARNF
SAO
+
SAO -
RL
Vo
Io
Io:
Iopeak
VC2


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