AD1991ASVZ Analog Devices Inc, AD1991ASVZ Datasheet
AD1991ASVZ
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AD1991ASVZ Summary of contents
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FEATURES Class D/1-Bit Audio Power Output Stage 5 V Analog and Digital Supply Voltages Power Stage Power Supply Output Power @ 0.1% THD + N Stereo Mode 14.4 V ...
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AD1991–SPECIFICATIONS Parameter OUTPUT POWER kHz SINE WAVE) O EFFICIENCY R ON Per High-Side Transistor Per Low-Side Transistor Temperature Coefficient THERMAL WARNING ACTIVE THERMAL SHUTDOWN ACTIVE OVERCURRENT SHUTDOWN ACTIVE POWER SUPPLIES Supply Voltage AV DD Supply Voltage ...
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INA t PDL OUTA OUTB RST/PDN MODEx MUTE OUTx t MPDL REV PST t PST t NOL Figure 1. Output Timing t PDRP Figure 2. RESET and Mode Timing t PST Figure 3. MUTE Timing –3– t PST ...
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AD1991 1 ABSOLUTE MAXIMUM RATINGS (T = 25°C, unless otherwise noted AGND, DGND . . . . . . . . . . –0 +6 PGNDx . ...
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Pin No. Mnemonic In/Out 1 PGND1 OUTA DD1 OUTB O 11, 12, 13 PGND1 ERR3 14 I/O ERR2 15 I/O ERR1 16 I/O ERR0 17 I/O 18 INA I ...
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AD1991 FUNCTIONAL DESCRIPTION Device Architecture The AD1991 is an 8-transistor, audio, power output stage. The AD1991 is arranged internally as four transistor pairs that can be used as two H-bridge outputs (2-channel mode four single-ended outputs (4-channel mode), ...
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INPUT INA A2 B1 INB B2 LEVEL SHIFTER AND H-BRIDGE SWITCH CONTROL C1 INC C2 D1 IND D2 n CLK THERMAL PROTECTION RST/PDN SHORT-CIRCUIT PROTECTION MUTE CONTROL MUTE AGND DGND ...
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AD1991 APPLICATION CONSIDERATIONS Good board layout and decoupling are vital for correct operation of the AD1991. Due to the fact that the part switches high currents, there is the potential for large PV bounce each time a transis- DD tor ...
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Figure 5. Layout Using Surface-Mount Capacitors (4 × × Recommended) Figure 6. Layout Using Through-Hole Capacitors (4 × × Recommended) REV PLANE DD CAP 52 51 ...
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AD1991 AV AV ANALOG INPUT_L GND ANALOG INPUT_R AGND DGND AGND Figure 7. Simplified System Schematic for Analog-In, Analog-Out System FEEDBACK PWM_L GND AD1991 MODULATOR PWM_R FEEDBACK AGND DGND DGND –10– ...
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Thin Quad Flat Package, Exposed Pad [TQFP/EP 1.20 MAX 0.20 0.09 REV. 0 OUTLINE DIMENSIONS (SV-52) Dimensions shown in millimeters 12.00 BSC 10.00 BSC SQ TOP VIEW (PINS DOWN) 27 ...
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