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G1427 Datasheet(PDF) 1 Page - Global Mixed-mode Technology Inc |
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G1427 Datasheet(HTML) 1 Page - Global Mixed-mode Technology Inc |
1 / 16 page Ver: 1.3 Sep 23, 2005 TEL: 886-3-5788833 http://www.gmt.com.tw 1 G1427 Global Mixed-mode Technology Inc. 2W Stereo Audio Amplifier 6dB\10dB\15.6dB\21.6dB Selectable Gain Settings Features Internal Gain Control, Which Eliminates Exter- nal Gain-Setting Resistors Depop Circuitry Integrated Output Power at 1% THD+N, VDD=5V --2.0W/CH (typical) into a 4 Ω Load --1.2W/CH (typical) into a 8 Ω Load Bridge-Tied Load (BTL), Single-Ended (SE) Stereo Input MUX PC-Beep Input Fully differential Input Shutdown Control Available Surface-Mount Power Package 24-Pin TSSOP-P Applications Stereo Power Amplifiers for Notebooks or Desktop Computers Multimedia Monitors Stereo Power Amplifiers for Portable Audio Systems General Description G1427 is a stereo audio power amplifier in 24pin TSSOP thermal pad package. It can drive 2.0W con- tinuous RMS power into 4 Ω load per channel in Bridge-Tied Load (BTL) mode at 5V supply voltage. Its THD is smaller than 1% under the above operation condition. To simplify the audio system design in the notebook application, G1427 supports the Bridge-Tied Load (BTL) mode for driving the speakers, Single-End (SE) mode for driving the headphone. For the low current consumption applications, the SHDN mode is supported to disable G1427 when it is idle. The current consumption can be reduced to 160µA (typically). Amplifier gain is internally configured and controlled by two terminals (GAIN0, GAIN1). BTL gain settings of 6dB, 10dB, 15.6dB, 21.6dB are provided, while SE gain is always configured as 4.1dB (inverting) for headphone driving. G1427 also supports two input paths, that means two different amplitude AC signals can be applied and chosen by setting HP/ LINE pin. It enhances the hardware designing flexibility. Ordering Information ORDER NUMBER ORDER NUMBER (Pb free) TEMP. RANGE PACKAGE G1427F31U G1427F31Uf -40°C to +85°C TSSOP-24 (FD) Note: U:Tape & Reel (FD): Thermal Pad Pin Configuration ROUT+ RHPIN VDD PVDD HP/LINE ROUT- PC-BEEP GND/HS GAIN1 LOUT+ LLINEIN LPHIN PVDD SHUTDOWN LOUT- G1427 GND/HS TSSOP-24 13 24 23 22 21 20 19 18 17 16 15 5 6 7 8 9 10 11 12 1 4 3 2 14 GAIN0 RLINEIN Thermal Pad Top View Bottom View GND/HS GND/HS RIN LIN BYPASS SE/BTL ROUT+ RHPIN VDD PVDD HP/LINE ROUT- PC-BEEP GND/HS GAIN1 LOUT+ LLINEIN LPHIN PVDD SHUTDOWN LOUT- G1427 GND/HS TSSOP-24 13 24 23 22 21 20 19 18 17 16 15 5 6 7 8 9 10 11 12 1 4 3 2 14 GAIN0 RLINEIN Thermal Pad Top View Bottom View GND/HS GND/HS RIN LIN BYPASS SE/BTL |
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