User manual MARLEC RUTHLAND 910

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[. . . ] Value 3 Unit °C/W 2/13 RUTHLAND 910 ABSOLUTE MAXIMUM RATINGS Symbol Vs Vi Vi Io Ptot Tstg, Tj Supply Voltage Input Voltage Differential Input Voltage Output Peak Current (internally limited) Power Dissipation at T case = 75 °C Storage and Junction Temperature Parameter Value ± 20 Vs ± 15 4 25 ­ 40 to + 150 V A W °C Unit V ELECTRICAL CHARACTERISTICS (refer to the test circuit, VS = ± 16V, Tamb = 25oC unless otherwise specified) Symbol Vs Id Ib Vos Ios Po Supply Voltage Quiescent Drain Current Input Bias Current Input Offset Voltage Input Offset Current Output Power d = 0. 5%, Tcase = 60°C f = 1kHz RL = 4 RL = 8 f = 15kHz RL = 4 Po = 1W, RL = 4 f = 1kHz f = 1kHz Po = 0. 1 to 10W, R L = 4 f = 40 to 15000Hz f = 1kHz B = Curve A B = 22Hz to 22kHz B = Curve A B = 22Hz to 22kHz 0. 5 R L = 4, R g = 22k, Gv = 30dB f = 100Hz, Vripple = 0. 5VRMS f = 1kHz Po = 12W Po = 22W RL = 8 RL = 4 40 29. 5 20 15 22 12 18 100 80 30 0. 08 0. 03 2 3 50 80 5 50 10 200 M dB % 66 63 145 °C µV µV pA 30. 5 kHz dB dB % Vs = ± 4. 5V Vs = ± 20V Vs = ± 20V Vs = ± 20V Parameter Test Conditions Min. ± 20 30 100 1 ± 20 ± 200 Unit V mA mA µA mV nA W BW Gv Gv d Power Bandwidth Open Loop Voltage Gain Closed Loop Voltage Gain Total Harmonic Distortion eN iN Ri SVR Input Noise Voltage Input Noise Current Input Resistance (pin 1) Supply Voltage Rejection Efficiency Tj Thermal Shut-down Junction Temperature 3/13 RUTHLAND 910 Figure 1 : Output Power versus Supply Voltage Figure 2 : Output Power versus Supply Voltage Figure 3 : Output Power versus Supply Voltage Figure 4 : Distortion versus Frequency Figure 5 : Supply Voltage Rejection versus Frequency Figure 6 : Supply Voltage Rejection versus Voltage Gain 4/13 RUTHLAND 910 Figure 7 : Quiescent Drain Current versus Supply Voltage Figure 8 : Open Loop Gain versus Frequency Figure 9 : Power Dissipation versus Output Power 5/13 RUTHLAND 910 Figure 10 : Amplifier with Split Power Supply Figure 11 : P. C. Board and Components Layout for the Circuit of Figure 10 (1:1 scale) 6/13 RUTHLAND 910 Figure 12 : Amplifier with Split Power Supply (see Note) Note : In this case of highly inductive loads protection diodes may be necessary. Figure 13 : P. C. [. . . ] Board and Components Layout for the Circuit of Figure 12 (1:1 scale) 7/13 RUTHLAND 910 Figure 14 : 30W Bridge Amplifier with Split Power Supply Figure 15 : P. C. Board and Components Layout for the Circuit of Figure 14 (1:1 scale) 8/13 RUTHLAND 910 Figure 16 : Two Way Hi-Fi System with Active Crossover Figure 17 : P. C. Board and Components Layout for the Circuit of Figure 16 (1:1 scale) 9/13 RUTHLAND 910 Figure 18 : Frequency Response Figure 19 : Power Distribution versus Frequency MULTIWAY SPEAKER SYSTEMS AND ACTIVE BOXES Multiway loudspeaker systems provide the best possible acoustic performance since each loudspeaker is specially designed and optimized to handle a limited range of frequencies. Commonly, these loudspeaker systems divide the audio spectrum into two, three or four bands. To maintain a flat frequencyresponseover the Hi-Fi audio range the bands covered by each loudspeaker must overlap slightly. Imbalance between the loudspeakers produces unacceptable results therefore it is important to ensure that each unit generates the correct amount of acoustic energy for its segment of the audio spectrum. In this respect it is also important to know the energy distribution of the music spectrum determine the cutoff frequenciesof the crossover filters (see Figure 19). Application Suggestions The recommended values of the components are those shown on application circuit of Fig. The following table can help the designer. The component values calculated for fc = 900Hz using a Bessel 3rd order Sallen and Key structure are : In the block diagram of Figure 21 is represented an active loudspeaker system completely realized using power integrated circuit, rather than the traditional discrete transistors on hybrids, very high quality is obtained by driving the audio spectrum into three bands using active cro ssove rs (TDA2320A) and a separate amplifier and loudspeakers for each band. A modern subwoofer/midrange/tweetersolution is used. Figure 21 : High Power Active Loudspeaker System using TDA2030A and RUTHLAND 910 Comp. R1 R2 R3 R4 C1 C2 C3, C4 C5, C6 C7 Recom. Value 22k 680 22k 4. 7 1µF 22µF 0. 1µF 220µF 0. 1µF Purpose Non inverting input biasing Closed loop gain setting Closed loop gain setting Frequency stability Input DC decoupling Inverting DC decoupling Supply voltage bypass Supply voltage bypass Frequency stability Larger than Recommended Value Increase of input impedance Decrease of gain (*) Increase of gain Danger of oscillation at high frequencies with inductive loads Smaller than Recommended Value Decrease of input impedance Increase of gain Decrease of gain (*) Increase of low frequencies cut-off Increase of low frequencies cut-off Danger of oscillation Danger of oscillation Danger of oscillation (*) The value of closed loop gain must be higher than 24dB 11/13 RUTHLAND 910 PENTAWATT PACKAGE MECHANICAL DATA DIM. A C D D1 E F F1 G G1 H2 H3 L L1 L2 L3 L5 L6 L7 M M1 Dia MIN. 0. 189 0. 054 0. 110 0. 053 0. 022 0. 041 0. 055 0. 142 0. 276 0. 409 0. 409 2. 4 1. 2 0. 35 0. 8 1 3. 4 6. 8 10. 05 17. 85 15. 75 21. 4 22. 5 2. 6 15. 1 6 4. 5 4 3. 65 0. 094 0. 047 0. 014 0. 031 0. 039 0. 126 0. 260 0. 396 0. 134 0. 268 10. 4 10. 4 0. 703 0. 620 0. 843 0. 886 3 15. 8 6. 6 0. 102 0. 594 0. 236 0. 177 0. 157 3. 85 0. 144 0. 152 0. 118 0. 622 0. 260 L E L1 A C D1 L2 L5 L3 D Dia. [. . . ] 0. 189 0. 054 0. 110 0. 053 0. 022 0. 041 0. 055 0. 142 0. 276 0. 409 0. 409 2. 4 1. 2 0. 35 0. 8 1 3. 4 6. 8 10. 05 17. 85 15. 75 21. 4 22. 5 2. 6 15. 1 6 4. 5 4 3. 65 0. 094 0. 047 0. 014 0. 031 0. 039 0. 126 0. 260 0. 396 0. 134 0. 268 10. 4 10. 4 0. 703 0. 620 0. 843 0. 886 3 15. 8 6. 6 0. 102 0. 594 0. 236 0. 177 0. 157 3. 85 0. 144 0. 152 0. 118 0. 622 0. 260 L E L1 A C D1 L2 L5 L3 D Dia. F L6 12/13 H2 L7 F1 G G1 H3 M M1 RUTHLAND 910 Information furnished is believed to be accurate and reliable. However, SGS-MARLEC Microelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. [. . . ]

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