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BA6820F Datasheet(PDF) 1 Page - Rohm |
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BA6820F Datasheet(HTML) 1 Page - Rohm |
1 / 10 page 662 Audio ICs LED level meter driver, 12-point 2 channel, VU scale, bar display BA6820F / BA6822S / BA6822F The BA6820F, BA6822S and BA6822F are two-channel, 12-point LED drivers for VU-scale bar-level meters. The ICs are available in 22-pin SOP (BA6820F and BA6822F) and 22-pin shrink-DIP (BA6822S) packages, and use a dynamic-drive system that can drive two 12-point displays. The ICs have independent AC and DC inputs, and the AC input mode has a peak hold circuit (with cancel function). The ICs also feature a power-on mute, so steps to prevent erroneous LED lighting at power on are not required. The input resistance of the AC inputs is 3k Ω (Typ.) for the BA6820F and 0.3kΩ (Typ.) for the BA6822S/F. FApplications Level meters for VCRs, stereo cassette players, audio amplifiers and karaoke equipment. FFeatures 1) Uses dynamic-drive system to display two 12-point channels. 22-pin SOP and 22-pin shrink DIP pack- ages. 2) Independent AC and DC inputs provided (one input displays one channel). Switching function allows two-mode display. 3) Upper 8 points have peak hold function in AC mode (two seconds). A peak-hold cancel function is also provided. 4) A mute function is provided, and muting can be ap- plied externally. 5) Power on mute function. |
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