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AK7846 Datasheet(PDF) 4 Page - Asahi Kasei Microsystems

Part # AK7846
Description  Stereo Audio Class-D Amp with Power Booster for Piezo Speakers
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Manufacturer  AKM [Asahi Kasei Microsystems]
Direct Link  http://www.akm.com
Logo AKM - Asahi Kasei Microsystems

AK7846 Datasheet(HTML) 4 Page - Asahi Kasei Microsystems

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AKEMDAKEMD CONFIDENTIAL
[AK7846]
Rev.04.9
– 4 –
2008/03
Pin / FUNCTION
No. Pin Name
I/O
Function
A1
NC
No Connection pin. Connect to ground.
A2
VCOIL
Inductor pin for Boost DCDC.
A3
PG2
I
Pre Gain setting pin2 (available when I2CEN=”L”)
A4
ERRO
Phase compensation capacitor connection pin for Boost DCDC.
Connect a 0.1
µF capacitor between VC pin and ground.
A5
VCRP
O
Right channel Class D amp plus output (+)
A6
NC
No Connection pin. Connect to ground.
B1
<Index>
B2
VSS3
Power Booster ground pin:VSS3=0V
B3
VSS4
Internal analog circuit ground pin:VSS4=0V
B4
VSS2
I
Right channel Class D amp ground pin:VSS2=0V
B5
VCRN
O
Right channel Class D amp minus output (-)
B6
VDD2
Right channel Class D amp power supply:VDD2=13V(typ.)
C1
PG0
I
Pre Gain setting pin0
C2
PG1
I
Pre Gain setting pin1
C3
C4
C5
NC
No Connection pin. Connect to ground.
C6
VFB
Boosted voltege feedback pin.
D1
DVDDI
Digital interface power:DVDDI=1.65V~4.5V
D2
FC1
I
SCF cutoff frequency setting pin1
D3
D4
D5
NC
No Connection pin. Connect to ground.
D6
NC
No Connection pin. Connect to ground.
E1
PDN
I
Power down contorol:schmitt trigger input
“High”:poewer up、”Low”:power down
E2
FC0
I
SCF cutoff frequency setting pin2
E3
VBAT
Battery voltage input:VBAT=2.7V~4.5V
E4
VSS1
Left channel Class D amp ground pin:VSS1=0V
E5
VCLN
O
Left channel Class D amp minus output (-)
E6
VDD1
Left channel Class D amp power supply:VDD1=13V(typ.)
F1
NC
No Connection pin. Connect to ground.
F2
VC
Voltage reference output. Connect a 0.01
µF capacitor between VC pin and ground.
F3
INR
I
Right channel analog signal input
F4
INL
I
Left channel analog signal input
F5
VCLP
O
Left channel Class D amp plus output (+)
F6
NC
No Connection pin. Connect to ground.
Note 1. Digital input pins (PDN, PG2, PG1, PG0, FC1, FC0) must not be open.
Unused Pins
Unused pins should be configured as below.
Category
Pin Name
Configuration
NoConnection
NC
VSS


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