AS1701 austriamicrosystems, AS1701 Datasheet
AS1701
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AS1701 Summary of contents
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... General Description The AS1701 and AS1706 are 1.6W bridged audio power amplifiers that provide excellent circuit reliability, provid- ing a very low-cost solution by eliminating external com- ponents when used with 2.7 to 5.5V-powered circuits. The devices have superb total harmonic distortion (THD) at high-power output and excellent power supply rejection with 4- and 8Ω ...
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... AS1701, AS1706 Data Sheet - Pinout Pin Assignments Figure 2. Pin Assignment – 8-Pin MSOP Package (Top View) Pin Descriptions Table 1. Pin Descriptions Pin Name Shutdown. Connect this pin to GND for the AS1701 (active-high); connect this 1 SHDN pin Bias Bypass 2 BIAS Non-Inverting Input 3 IN+ ...
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... AS1701, AS1706 Data Sheet - Absolute Maximum Ratings Stresses beyond those listed in Table 2 and functional operation of the device at these or any other conditions beyond those indicated in istics on page 4 is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ...
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... AS1701, AS1706 Data Sheet - Electrical Characteristics All specifications are 100% tested Operation ∞ 5V 0.1µF to GND, SHDN = GND BIAS Table 3. DC Electrical Characteristics – 5V Operation Parameter Symbol Supply Voltage Range Supply Current Shutdown Supply Current I SHDN SHDN Threshold 2 VBIAS Common-Mode Bias Voltage ...
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... AS1701, AS1706 Data Sheet - Typical Operating Characteristics Figure 3. THD + Noise vs. Output Power 3V 4Ω 100 1kHz 10kHz IN 0 100Hz IN 0.01 0.001 0 100 200 300 400 500 600 700 800 Output Power (mW) Figure 5. THD + Noise vs. Output Power 3V 4Ω 100 10 fIN = 1kHz ...
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... AS1701, AS1706 Data Sheet - Figure 9. THD + Noise vs. Output Power 5V 4Ω 100 1kHz 10kHz IN 0 100Hz IN 0.01 0.001 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 2.2 2.4 Output Power (W) Figure 11. THD + Noise vs. Frequency 3V 4Ω 250mW 0.1 500mW 0.01 10 100 ...
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... AS1701, AS1706 Data Sheet - Figure 15. THD + Noise vs. Frequency 5V 4Ω 500mW 0.1 1.4W 0.01 10 100 1000 Frequency (Hz) Figure 17. Power Dissipation vs. P OUT 4Ω 1kHz, THD+N<1% L 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 0.0 0.3 0.6 0.9 1.2 Output Power (W) Figure 19 ...
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... AS1701, AS1706 Data Sheet - Figure 21. Output Power vs. Supply Voltage 1kHz 4Ω 2 @10% (W) OUT 1.5 P @1% (W) OUT 1 0.5 0 2.5 3.5 4.5 Supply Voltage (V) Figure 23. PSRR vs. Frequency; V RIPPLE 1µ 4Ω In1 Grounded -20 -30 - -70 -80 10 100 1000 10000 Frequency (Hz) Figure 25. PSRR vs. Frequency; V RIPPLE ...
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... AS1701, AS1706 Data Sheet - Figure 27. Output Power vs. Load Resistance 2 @THD = 10% OUT 1.6 1.2 P @THD = 1% 0.8 OUT 0 Load Resistance ( Ω ) www.austriamicrosystems.com Figure 28. Output Power vs. Load Resistance 800 700 600 500 400 P @THD = 1% OUT 300 200 100 0 100 1 Load Resistance ( Ω ) Revision 1.52 ...
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... AS1701, AS1706 Data Sheet - Detailed Description The AS1701/AS1706 bridged audio power-amplifiers can deliver 1.6W into 4 Ω while operating from a single 2.7 to 5.5V supply. The devices consist of two high-output-current operational amplifiers configured as a bridge-tied load (BTL) amplifier as shown in Figure 29. Figure 29. AS1701 Typical Configuration Block Diagram 20kΩ ...
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... Application Information BTL Amplifier The AS1701/AS1706 are designed to drive loads differentially in a bridge-tied load (BTL) configuration. Figure 30. Bridge-Tied Load Configuration Driving the load differentially doubles the output voltage (illustrated in under similar conditions. Thus, the differential gain of the device is twice the closed-loop gain of the input amplifier. The ...
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... Note: A pulsing output under continuous thermal overload results as the device heats and cools. Efficiency Efficiency of the AS1701/AS1706 is calculated by taking the ratio of the power delivered to the load, to the power con- sumed from the power supply. Output power is calculated by: where V is half the peak-to-peak output voltage ...
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... Note: Place the capacitors as close to the device as possible. Volume Control The addition of a digital potentiometer (AS1500 family) used as an input attenuator, can provide simple volume control for the AS1701/AS1706. Connect the high terminal of the AS150x to the audio input, the low terminal to ground and the AS150x wiper to C shown in Figure 31). Setting the wiper to the top position passes the audio signal unattenuated ...
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... AS1701, AS1706 Data Sheet - Figure 31. Volume Control Configuration Audio H Input AS150x L For more information on the AS1500 family of digital potentiometers, refer to the latest version of the AS150 x data sheet , available from the austriamicrosystems website http://www.austriamicrosystems.com. Layout and Grounding Considerations Well designed PC board layout is essential for optimizing device performance. Use large traces for the power supply inputs and amplifier outputs to minimize losses due to parasitic trace resistance and route heat away from the device ...
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... AS1701, AS1706 Data Sheet - Package Drawings and Markings Figure 32. 8-pin MSOP Package Symbol Millimeters A 1.10 A1 0.10 A2 0.86 D 3.00 D2 2.95 E 4.90 E1 3.00 E2 2.95 E3 0.51 E4 0.51 R 0.15 +0.15 to -0.08 R1 0.15 +0.15 to -0.08 t1 0.31 t2 0.41 Notes: 1. All dimensions are in millimeters (angle in degrees), unless otherwise specified. ...
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... AS1701, AS1706 Data Sheet - Ordering Information The devices are available as the standard products shown in Table 5. Ordering Information Part Number Description AS1701 1.6W Audio Power Amplifier AS1701-T 1.6W Audio Power Amplifier AS1706 1.6W Audio Power Amplifier AS1706-T 1.6W Audio Power Amplifier www.austriamicrosystems.com Table 5 ...
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... AS1701, AS1706 Data Sheet Copyrights Copyright © 1997-2007, austriamicrosystems AG, Schloss Premstaetten, 8141 Unterpremstaetten, Austria-Europe. Trademarks Registered ®. All rights reserved. The material herein may not be reproduced, adapted, merged, trans- lated, stored, or used without the prior written consent of the copyright owner. All products and companies mentioned are trademarks or registered trademarks of their respective companies. ...