APA2121 datasheet(6/30 Pages) ANPEC

6 / 30 page

 ANPEC Electronics Corp.

Rev. A.1 - Mar., 2003

APA2120/2121

www.anpec.com.tw

Name

Config.

Description

GND

1,12,

13,24

Ground connection, Connected to thermal pad.

PCBEN

I/P

BEEP mode control input, active H, for APA2120 only

HP/LINE

I/P

Multi-input selection input, headphone mode when held high, line-in

mode when held low for APA2121 only.

VOLUME

Input signal for internal volume gain setting.

LOUT+

O/P

Left channel positive output in BTL mode and SE mode.

LLINEIN

I/P

Left channel line input terminal, selected when HP/LINE is held low.

LHPIN

O/P

Left channel headphone input terminal, selected when HP/LINE is

held high.

PVDD

7,18

Supply voltage only for power amplifier.

RBYPASS

I/P

Right channel bypass voltage.

LOUT-

O/P

Left channel negative output in BTL mode and high impedance in

SE mode.

LBYPASS

I/P

Left channel bias voltage generator.

BYPASS

Bias voltage generator

PC_BEEP

I/P

PCBEP signal input

SE/BTL

I/P

Output mode control input, high for SE output mode and low for

BTL mode.

ROUT-

O/P

Right channel negative output in BTL mode and high impedance in

SE mode.

CLK

Clock signal generator

VDD

Supply voltage for internal circuit excepting power amplifier.

RHPIN

I/P

Right channel headphone input terminal, selected when HP/LINE is

held high.

ROUT+

O/P

Right channel positive output in BTL mode and SE mode.

SHUTDOWN

I/P

It will be into shutdown mode when pull low.

RLINEIN

I/P

Right channel line input terminal, selected when HP/LINE is held

low.

Pin Function Description

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