G1427 Datasheet, PDF (9/16 Pages) Global Mixed-mode Technology Inc – 2W Stereo Audio Amplifier

Global Mixed-mode Technology Inc.
Pin Description
G1427
PIN
1,12,13,24
2
3
4
5
6
7,18
8
9
10
11
14
NAME
GND/HS
GAIN0
GAIN1
LOUT+
LLINEIN
LPHIN
PVDD
RIN
LOUT-
LIN
BYPASS
PC-BEEP
15
SE/ BTL
16
ROUT-
17
HP/ LINE
19
VDD
20
RHPIN
21
ROUT+
22
SHUTDOWN
23
RLINEIN
I/O
FUNCTION
Ground connection for circuitry, directly connected to thermal pad.
I Bit 0 of gain control
I Bit 1 of gain control
O Left channel + output in BTL mode, + output in SE mode.
I Left channel line input, selected when HP/ LINE pin is held low.
I
Left channel headphone input, selected when HP/ LINE pin is held high.
I Power supply for output stages.
I Common right input for fully differential inputs. AC ground for single-ended inputs.
O Left channel - output in BTL mode, and high impedance in SE mode.
I Common left input for fully differential inputs. AC ground for single-ended inputs.
Tap to voltage divider for internal mid-supply bias generator.
I The input for PC-BEEP mode. PC-BEEP is enabled when at least eight continuous >
1-V_PP (peak to peak) square waves is input to PC-BEEP pin.
I Hold low for BTL mode, hold high for SE mode.
O Right channel - output in BTL mode, high impedance state in SE mode.
I MUX control input, hold high to select headphone inputs (6,20), hold low to select line
inputs (5,23).
Analog VDD input supply. This terminal needs to be isolated from PVDD to achieve
highest performance.
I Right channel headphone input, selected when HP/ LINE pin is held high.
O Right channel + output in BTL mode, positive output in SE mode.
I Places entire IC in shutdown mode when held low, expect PC-BEEP remains active.
I
Right channel line input, selected when HP/ LINE pin is held low.
Ver: 1.3
Sep 23, 2005
TEL: [phone]
http://www.gmt.com.tw
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