G1432 Global Mixed-mode Technology Inc. 2.6W Stereo Audio Amplifier Features General Description The G1432 is a stereo audio power amplifier in 24pin TSSOP thermal pad package or 24pin QFN package. It can drive 2.0W continuous RMS power into 4Ω load per channel in Bridge-Tied Load (BTL) mode at 5V supply voltage. Its THD is smaller than 1% under the above operation condition. The G1432 can mute the output when Mute is activated. For the low current consumption applications, the SHDN mode is supported to disable the G1432 when it is idle. The current consumption can be further reduced to below 5µA. Depop Circuitry Integrated Output Power at 1% THD+N, VDD=5V --2.0W/CH (typical) into a 4Ω Load --1.3W/CH (typical) into a 8Ω Load Output Power at 10% THD+N, VDD=5V --2.6W/CH (typical) into a 4Ω Load --1.6W/CH (typical) into a 8Ω Load Maximum Output Power Clamping Circuitry Integrated Bridge-Tied Load (BTL) Stereo Input MUX Mute and Shutdown Control Available Surface-Mount Power Package 24-Pin TSSOP-P & 24-Pin QFN Available The G1432 also supports two input paths, that means two different gain loops can be set in the same PCB and choosing either one by setting IN1 /IN2 pin. It enhances the hardware designing flexibility. The G1432 also supports an extra function -- the maximum output power clamping function to protect the speakers from burned-out. Applications Stereo Power Amplifiers for Notebooks or Desktop Computers Multimedia Monitors Stereo Power Amplifiers for Portable Audio Systems Ordering Information TEMP. RANGE ORDER MARKING NUMBER PACKAGE (Pb free) G1432F3U G1432 -40°C to +85°C TSSOP-24 (FD) G1432Q5U G1432 -40°C to +85°C QFN4X4-24 Note: F3:TSSOP-24 (FD) Q5:QFN4X4-24 U: Tape & Reel RVDD 8 17 GND NC 9 16 IN1/IN2 LOUT- 10 NC 11 15 14 ROUTMUTE GND/HS 12 13 GND/HS Top View Thermal Pad RVDD GND IN1/IN2 15 14 13 21 10 GND/HS 9 GND/HS Thermal Pad ROUT- GND/HS 22 NC 23 8 NC LOUT+ 24 7 LOUT- Bottom View TSSOP-24 (FD) 6 18 MUTE GND/HS NC 19 7 11 5 6 LVDD SHUTDOWN 12 20 4 LBYPASS RIN2 RBYPASS 19 VOL LVDD RIN1 20 ROUT+ SHUTDOWN 21 5 RIN2 4 RBYPBASS LIN1 LIN2 16 ROUT+ 3 22 LBYPASS 3 RIN1 VOL LOUT+ GND/HS 2 23 1 2 LIN1 24 NC LIN2 1 17 G1432 GND/HS 18 Pin Configuration G1432 QFN4X4-24 Note: Recommend connecting the Thermal Pad to the GND for excellent power dissipation. TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 1.3 Apr 13, 2007 1 G1432L Global Mixed-mode Technology Inc. 2.6W Stereo Audio Amplifier Features General Description The G1432L is a stereo audio power amplifier in 24pin TSSOP thermal pad package or 24pin QFN package. It can drive 2.0W continuous RMS power into 4Ω load per channel in Bridge-Tied Load (BTL) mode at 5V supply voltage. Its THD is smaller than 1% under the above operation condition. The G1432L can mute the output when Mute is activated. For the low current consumption applications, the SHDN mode is supported to disable the G1432L when it is idle. The current consumption can be further reduced to below 5µA when SHUTDOWN is held low. Depop Circuitry Integrated Output Power at 1% THD+N, VDD=5V --2.0W/CH (typical) into a 4Ω Load --1.3W/CH (typical) into a 8Ω Load Output Power at 10% THD+N, VDD=5V --2.6W/CH (typical) into a 4Ω Load --1.6W/CH (typical) into a 8Ω Load Maximum Output Power Clamping Circuitry Integrated Bridge-Tied Load (BTL) Stereo Input MUX Mute and Shutdown Control Available Surface-Mount Power Package 24-Pin TSSOP-P & 24-Pin QFN Available The G1432L also supports two input paths, that means two different gain loops can be set in the same PCB and choosing either one by setting IN1 /IN2 pin. It enhances the hardware designing flexibility. The G1432L also supports an extra function -- the maximum output power clamping function to protect the speakers from burned-out. Applications Stereo Power Amplifiers for Notebooks or Desktop Computers Multimedia Monitors Stereo Power Amplifiers for Portable Audio Systems Ordering Information ORDER NUMBER MARKING TEMP. RANGE PACKAGE (Pb free) G1432LF31U G1432LQ51U G1432L 1432L -40°C to +85°C -40°C to +85°C TSSOP-24 (FD) QFN4X4-24 REMARK OBSOLETE Note: F3:TSSOP-24 (FD) Q5:QFN4X4-24 1:Bonding Code U: Tape & Reel RIN2 RBYPASS LVDD SHUTDOWN 7 18 RVDD 8 17 GND NC 9 16 IN1/IN2 LOUT- 10 NC 11 15 14 ROUTMUTE GND/HS 12 13 GND/HS Top View Thermal Pad RVDD GND IN1/IN2 15 14 13 21 10 GND/HS 9 GND/HS Thermal Pad ROUT- GND/HS 22 NC 23 8 NC LOUT+ 24 7 LOUT- Bottom View TSSOP-24 (FD) 6 19 MUTE GND/HS NC 20 6 11 5 5 12 20 4 LIN2 LBYPASS 19 VOL LVDD RIN1 ROUT+ SHUTDOWN 21 RIN2 4 RBYPBASS LIN1 16 ROUT+ 3 22 LBYPASS 3 RIN1 VOL LOUT+ GND/HS 2 23 1 2 LIN1 24 NC LIN2 1 17 G1432L GND/HS 18 Pin Configuration G1432L QFN4X4-24 Note: Recommend connecting the Thermal Pad to the GND for excellent power dissipation. TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 1.2 Oct 31, 2008 1