APA2057A
PinDescriptions
TSSOP-28
TQFN-28
NO.
25
26
27
28
1
Name
Function Description
Power supply for control section
NO.
1
VDD
GND
2
Ground
3
INR_A
INR_H
INL_A
INL_H
PGND
LOUT+
LOUT-
PVDD
CVDD
CP+
Right channel input terminal for speaker amplifier
Right channel input terminal for headphone driver
Left channel input terminal for speaker amplifier
Left channel input terminal for headphone driver
Power ground
4
5
6
2
7,23
8
3,19
4
Left channel positive output for speaker
Left channel negative output for speaker
Power amplifier power supply
9
5
10,20
11
12
13
14
15
16
17
18
19
21
22
24
25
6,16
7
Charge pump power supply
8
Charge pump flying capacitor positive connection
Charge pump ground
9
CGND
CP-
10
11
12
13
14
15
17
18
20
21
Charge pump flying capacitor negative connection
Charge pump output, connect to the “HVSS”
Headphone amplifier negative power supply
Right channel output for headphone
Left channel output for headphone
CVSS
HVSS
HP_R
HP_L
HV DD
ROUT-
ROUT+
HP_EN
BIAS
Headphone amplifier positive power supply
Right channel negative output for speaker
Right channel positive output for speaker
Headphone driver enable pin, pull high to enable headphone mode
Bias voltage generator
It has 19 steps gain setting control from 2.0~4.2V; pull high to 5V is 10.5dB fix
gain and pull low to 0V, the APA2057A enter shutdown mode. ISD = 80mA
26
22
SET
27
28
23
24
AMP_EN
BEEP
Speaker driver enable pin, pull low to enable speaker mode
PC BEEP Trigger signal input
Copyright ã ANPEC Electronics Corp.
18
www.anpec.com.tw
Rev. A.1 - Aug., 2007
ANPEC [ ANPEC ELECTRONICS COROPRATION ]
