E-LS1240AD1 STMicroelectronics, E-LS1240AD1 Datasheet
E-LS1240AD1
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E-LS1240AD1 Summary of contents
Page 1
... To drive a dynamic loudspeaker LS1240 can simply use a decoupling capacitor, thus eliminating the usual transformer. No current limitation is provided on the output stage of LS1240 minimum load Ω is advised, in series with a proper capacitor. Pin connection (top view) August 2006 Electronic two-tone ringer ...
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... Block diagram and test circuit 1 Block diagram and test circuit Figure 1. LS1240 block diagram Figure 2. Test circuit 2.72 ⋅ (Hz) 2/9 Telephone Rectifier N.C. line capacitor Rectifier Threshold circuit with hysteresis bridge - Switching frequency generator Telephone Sweep rate GND line control capacitor ...
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... LS1240 2 Electrical characteristics Table 1. Absolute maximum ratings Symbol V Calling voltage ( Hz) continuous AB V Calling voltage ( Hz) 5s ON/10s OFF AB DC Supply current T Operating temperature OP Tstg Storage and junction temperature Table 2. Thermal data Symbol R Maximum thermal resistance junction-ambient thj-amb Tamb = 25° Table 3. Electrical characteristics ...
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... Application schematics 3 Application schematics Figure 3. Typical application with buzzer Figure 4. Typical application with loudspeaker (no transformer needed) 4/9 such that ⏐Z ⏐ > 1 ΚΩ LOAD LS1240 ...
Page 5
... These packages have a Lead-free second level interconnect . The category of second Level Interconnect ismarked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK trademark. ECOPACK specifications are available at: www.st.com. Package mechanical data ...
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... Package mechanical data Table 4. Minidip package dimensions Dim 0.356 b1 0.204 Figure 5. Minidip package mechanicla drawing 6/9 mm Min. Typ. Max. 3.32 0.51 1.15 1.65 0.55 0.304 10.92 7.95 9.75 2.54 7.62 7.62 6.6 5.08 3.18 3.81 1.52 LS1240 inch Min. Typ. Max. ...
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... LS1240 Table 5. SO8 package dimensions Dim D( F( Figure 6. SO8 mechanical drawing mm Min. Typ. Max. 1.75 0.1 0.25 1.65 0.65 0.85 0.35 0.48 0.19 0.25 0.25 0.50 4.8 5.0 5.8 6.2 1.27 3.81 3.8 4.0 0.4 1.27 0.6 Package mechanical data inch Min ...
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... Ordering information 5 Ordering information Table 6. Order codes Part number LS1240A LS1240AD1 (1) E-LS1240A (1) E-LS1240AD1 ® 1. ECOPACK (see 6 Revision history Table 7. Document revision history Date 15-Jul-1998 23-Aug-2006 8/9 Minidip SO8 Minidip SO8 Chapter 4 ) Revision 1 Initial release. Updated the document to reflect the fact that packages are leadfree 2 and part numbers have changed ...
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