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AD1991ASVRL

器件名称: AD1991ASVRL
功能描述: Class D/1-Bit Audio Power Output Stage
文件大小: 194.9KB    共11页
生产厂商: ADI
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简  介:Class D/1-Bit Audio Power Output Stage AD1991 FEATURES Class D/1-Bit Audio Power Output Stage 5 V Analog and Digital Supply Voltages Power Stage Power Supply 8 V to 20 V Output Power @ 0.1% THD + N Stereo Mode 2 20 W @ 4 @ 14.4 V 2 20 W @ 8 @ 20 V Mono Mode 1 40 W @ 4 @ 20 V RON < 320 m (per Transistor) Efficiency > 85% @ Full Power/8 Clickless Mute Function Turn-On and Turn-Off Pop Suppression Short-Circuit Protection Overtemperature Protection Data Loss Protection 2-Channel BTL Outputs or 4-Channel Single-Ended Outputs 52-Lead Exposed Pad TQFP Package Low Cost DMOS Process APPLICATIONS PC Audio Systems Minicomponents Automotive Amplifiers Home Theater Systems Televisions GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAMS 2-Channel Mode AVDD DVDD PVDD 6 OUTA INA LEFT INPUT A1 A2 3 INB B1 B2 LEVEL SHIFTER AND SWITCH CONTROL H-BRIDGE OUTB 3 OUTC INC RIGHT INPUT C1 C2 3 IND D1 OUTD D2 3 CURRENT OVERLOAD THERMAL SHUTDOWN THERMAL WARNING DATA LOSS 14 PGND CLK RST/PDN MUTE n THERMAL PROTECTION SHORT-CIRCUIT PROTECTION MUTE CONTROL 4 AGND DGND 2 TEST CONTROL 4-Channel Mode AVDD DVDD PVDD 6 The AD1991 is a 2-channel BTL or 4-channel single-ended class D audio power output stage. The part is configured during reset to be in either 2-channel mode or 4-channel mode. To protect the IC as well as the connected speakers, the AD1991 provides turn-on and turn-off pop suppression, short-circuit protection, and overtemperature shutdown. To control the IC, a power-down/reset in……
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