U4083B ATMEL Corporation, U4083B Datasheet
U4083B
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U4083B Summary of contents
Page 1
... The integrated circuit U4083B is a low-power audio amplifier for telephone loudspeak- ers. It has differential speaker outputs to maximize the output swing at low supply voltages. There is no need for coupler capacitors. The U4083B has an open-loop gain where the closed-loop gain is adjusted with two external resistors. A chip dis- able pin permits powering down and/or muting the input signal ...
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... FC2 Filtering, power supply rejection 3 FC1 Filtering, power supply rejection 4 V Amplifier input i 5 VO1 Amplifier output Voltage supply S 7 GND Ground 8 VO2 Amplifier output 2 U4083B VO2 2 7 GND FC2 V FC1 VO1 4655C–CORD–03/06 ...
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... The change in differential gain µs off , C and and, therefore, do not change when the U4083B S (Pin 5) and V (Pin 8), turn to a high impedance condition and ground. S and dominant at low frequencies 2 9). The values of C and C depend on the conditions of each application ...
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... The right (descending) portion of each curve is defined by the maximum internal power dissipation of the IC at 25°C. At higher ambient temperatures, the maximum load power must be reduced according to the above men- tioned equation. U4083B 4 , Pin 5: Amplifier Output ...
Page 5
... +70 amb P 440 tot Symbol Value R 180 thJA Symbol Value 8.0 to 100 L I ±200 – +70 amb U4083B Unit °C °C °C mW Unit K/W Unit °C 5 ...
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... Output DC offset voltage (V – Input bias current Equivalent resistance at Pin 3 Equivalent resistance at Pin 2 Chip disable Pin 1 Input voltage low Input voltage high Input resistance Power supply current U4083B 6 Test Conditions V = 6.0V 1.0 kHz 3.0V < 10 6.0V < 10% ...
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... V switching from Amplifier 1 — Open-loop Gain and Phase 100 Gain (kHz) Typical Change Units ±40 pA/ C +0.003 %/ C –2.5 µA/ C –0.03 µ µ µ (µF) 2 99.33 92.67 Phase 86.00 79.33 72.67 66.00 1000 100 U4083B 7 ...
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... Figure 8-3. Figure 8-4. Figure 8-5. U4083B 8 Differential Gain versus Frequency 150 Input 16 0.1 µ Frequency (kHz) Power Supply Rejection versus Frequency — > 1 µF C > 1 µ 0.1 µ 0.1 µF ...
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... 0.1 µ 0.1 1 Device Dissipation — 1200 1000 800 600 400 200 µ µF 100 10 f (kHz 100 10 f (kHz Ohm 120 150 180 (mW) L U4083B 9 ...
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... Figure 8-9. Figure 8-10. Device Dissipation — R Figure 8-11. Distortion versus Power — kHz, Delta – G U4083B 10 Device Dissipation — 1200 1000 800 600 400 200 100 = 32 L 1200 1000 800 600 400 200 100 ...
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... Ohm Ohm Ohm Limit 100 200 P O U4083B = kHz Delta Ohm Ohm Ohm Limit Ohm ...
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... Figure 8-14. Maximum Allowable Load Power Figure 8-15. Power-supply Current Figure 8-16. Small Signal Response U4083B 12 600 T = 25°C - Derate at higher temperature amb 500 400 300 16 Ohm 200 8 Ohm 100 ( ...
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... Figure 8-17. Large Signal Response Figure 8-18. V Figure 8-19. V 4655C–CORD–03/06 20µs/Div – V versus Load Current S OH 1.3 1.2 1.1 1.0 0.9 0 versus Load Current OL 2.0 1.6 1.2 0.8 0 U4083B 2V< V < 200 120 160 (mA > 200 120 160 (mA ...
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... Figure 8-20. Application Circuit 75k 0.1µF C1 FC3 C2 1µF FC2 5µF U4083B 14 4 Amp1 50k Amp2 125k 2 50k U4083B 10R R1B 6 VS C1B 5 VO1 8 C2B VO2 1 Bias circuit 10R R2B CD 7 GND 100nF 100nF 4655C–CORD–03/06 ...
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... Ordering Information Extended Type Number U4083B-MFPY U4083B-MFPG3Y 10. Package Information Package SO8 Dimensions in mm 4655C–CORD–03/06 Package Remarks SO8, Pb-free Tube SO8, Pb-free Taped and reeled 5.00 4.85 1.4 0.25 0.4 0.10 1.27 3. technical drawings according to DIN specifications 1 4 U4083B 5.2 4.8 3.7 0.2 3.8 6.15 5.85 15 ...
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... Atmel products are not suitable for, and shall not be used in, automotive applications. Atmel’s products are not intended, authorized, or warranted for use as components in applications intended to support or sustain life. © Atmel Corporation 2006. All rights reserved. Atmel marks or trademarks of Atmel Corporation or its subsidiaries. Other terms and product names may be trademarks of others. Atmel Operations Memory ...