Data Sheets   Rev 0, 06/2003 (pdf, 206K) Email PDF      Lead(Pb) - Free Data (Data Sheet Help)     Application Notes Evaluation Boards Price, Packaging, and Availability

	Product Description
	The AD1991 is a two-channel BTL or four-channel single-ended class-D audio power output stage. The AD1991 is arranged internally as four transistor pairs, which can be used as two H bridge outputs...More
This product is currently being phased out of production. Not recommended for new designs. For assistance in finding alternate products, please use the selection table below. Suggested Replacement Product(s): ADAU1513

Specifications Min Pos Supply +4.5V Max Pos Supply +5.5V Supply Current (max) 2.75mA Output Power (W) 20W Efficiency (%) 87% THD+N @ 1kHz (%) 0.1% Find Similar Products

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Price, Packaging, and Availability Print Table AD1991 Model Options Model Status Package Pins Temp Range Price* (100-499) Available RoHS Compliant Samples Cart Purchase Cart AD1991ASVRL LAST TIME BUY TQFP 1.0 MM W/ THERMAL PAD 52 Ind - - N Material Declaration Contact ADI Add to Cart AD1991ASVZ LAST TIME BUY TQFP 1.0 MM W/ THERMAL PAD 52 Ind $8.86 10/17/2008 Y Material Declaration Contact ADI Add to Cart AD1991ASVZRL LAST TIME BUY TQFP 1.0 MM W/ THERMAL PAD 52 Ind - - Y Material Declaration Contact ADI Add to Cart The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing. View Sales and Distribution Offices

 

 

Find Similar Products Download this Selection Table (pdf, 113,704 bytes) Select a Product Category Class D Audio Amplifiers Class D Audio Output Power Stage Portable Audio Products Audio Amplifier Products Last Updated: 5/2008 Class D Audio Amplifiers Part# Channel Output Power (W) Efficiency (%) Dynamic Range (dB) SNR (dB) THD+N (dB) Pos Supply Supply Current AD1990 2 5 84 102 102 -90 5V analog 5V digital 8V-12V Power stage 30mA @12V AD1992 2 10 84 102 102 -90 5V analog 5V digital 8V-20V Power stage 30mA @12V AD1994 2 25 84 102 102 -90 5V analog 5V digital 8V-20V Power stage 30mA @12V ADAU1590 2 11.5 (6Ω) 87 101 101 -85 3.3V analog 3.3V digital 9V-15V Power stage 34mA @12V ADAU1592 2 18 (6Ω) 87 101 101 -85 3.3V analog 3.3V digital 9V-18V Power stage 44mA @15V SSM2301 1 1.4 85 - 98 -67 2.5V-5.5V 4.2mA @5V SSM2311 1 3 85 - 98 -67 2.5V-5.5V 4.2mA @5V SSM2302 2 1.4 85 - 98 -67 2.5V-5.5V 8.0mA @5V SSM2304 2 2 85 - 98 -67 2.5V-5.5V 7.0mA @5V SSM2306 2 2 87 - 98 -67 2.5V-5.5V 6.5mA @5V SSM2305 1 2 89 - 98 -67 2.5V-5.5V 3mA @5V SSM2317 1 2.7 92 - 98 -67 2.5V-5.5V 3mA @5V SSM2315 1 3 92 - 98 -67 2.5V-5.5V 3mA @5V back to top Class D Audio Output Power Stage Part# Channel Output Power (W) Efficiency (%) Dynamic Range (dB) SNR (dB) Pos Supply min Load Impedance (Ω) AD1991 2 20 87 - - 6.5V to 20V 4 ADAU1513 2 14.5 (8Ω) 90 (8Ω) 96 96 9V to 18V 4 back to top Portable Audio Products Part # Speaker Driver Headphone Driver Microphone Driver Features Stereo Mono Stereo Mono Stereo Mono SSM2301   X         1.4W mono Filterless class D SSM2302 X           1.4W Stereo Filterless Class D SSM2304 X           2W Stereo Filterless Class D SSM2306 X           2W Stereo Filterless Class D with extra low power consumption SSM2311   X         3W Mono Filterless Class D SSM2305   X         2W mono Filterless Class D with extra low power consumption SSM2315   X         3W Mono Filterless Class D with extra low power consumption SSM2317   X         2.7W Mono Filterless Class D with ALC SSM2211   X         2W mono speaker driver SSM2250   X X       2W monospeaker and stereo headphone driver SSM2167           X Microphone driver with noise gate AD8592     X       Stereo Headphone driver with shutdown AD8541           X Ultra low power mic driver AD8542         X   Stereo mic driver AD8544         X   Ultra low power mic driver back to top Audio Amplifier Products Part# Common Mode Rejection (dB) THD+N Gain Error PSRR Slew Rate (V/ms) Description SSM2141 100 0.0010% 0.001% 0.7µV/V 9.5 Differential Line Receiver SSM2142 n/a 0.0060% 0.700% 80dB 15 Balanced Line Driver SSM2143 90 0.0006% 0.03% 110dB 10 Differential Line Receiver SSM2160 n/a 0.01% 0.5dB n/a n/a 6-Channel Volume Control SSM2165 n/a 0.20% n/a 50dB n/a Mic Conditioner w/Noise Gate SSM2166 n/a 0.25% n/a 50dB n/a Mic Conditioner w/Noise Gate SSM2019 130 0.01% 0.1dB 124dB 16 Complete Pre Amp back to top