AK7846 Datasheet, PDF (4/16 Pages) Asahi Kasei Microsystems – Stereo Audio Class-D Amp with Power Booster for Piezo Speakers

AKEMDAKEMD CONFIDENTIAL
[AK7846]
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 0.1µF 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
Power down contorol：schmitt trigger input
I
“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 0.01µF 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
NoConnection
Pin Name
NC
Configuration
VSS
Rev.04.9
–4–
2008/03