Datenblatt-Suchmaschine für elektronische Bauteile |
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TSH122 Datenblatt(PDF) 10 Page - STMicroelectronics |
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TSH122 Datenblatt(HTML) 10 Page - STMicroelectronics |
10 / 16 page Application information TSH122 10/16 3.2 Implementation considerations 3.2.1 Input The DC level shifter optimizes the position of the video signal with no clamping on the output rails. 3.2.2 Filter A reconstruction filter is used to attenuate the DAC’s sampling frequency because it generates a parasitic signal in the video spectrum (typically at 27 MHz in the case of standard video). This function is fulfilled while keeping a low group delay and a good gain flatness along the video band. Figure 25. Internal schematic 3.2.3 Output In an AC-coupling configuration, the SAG correction allows use of two small low-cost capacitors in place of one large capacitor (see Figure 26). The AC-coupling output reduces the power consumption by removing the DC component included in the signal. Nevertheless, the output can be directly connected to the line without any capacitor. In this case, the OUT and SAG pins are connected together and the equivalent gain of the buffer remains at 6 dB (see Figure 27). + - 2.25 V to 5 V LPF 6th order 1 6 2 4 5 Power-down 2R R 2R DC shifter + SAG 3 2R +Vcc GND Output Input + - 2.25 V to 5 V LPF 6th order 1 6 2 4 5 Power-down 2R R 2R DC shifter + SAG 3 2R +Vcc GND Output Input |
Ähnliche Teilenummer - TSH122 |
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Ähnliche Beschreibung - TSH122 |
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