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LA1193M Datenblatt(PDF) 11 Page - Sanyo Semicon Device |
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LA1193M Datenblatt(HTML) 11 Page - Sanyo Semicon Device |
11 / 21 page 4. Mixer The mixer circuit used in this IC is a balanced input/balanced output double balance mixer circuit. • Input Format Emitter input Input impedance: 25 Ω Optimization of the component geometry, emitter current and bias allow this circuit to achieve the following performance. Mixer input usable sensitivity: 15 dBµ Mixer input IMQS*: 90.5 dBµ Note: * Mixer input IMQS is defined as follows: 5. IF Amplifier This IF amplifier is a single stage differential amplifier. Specifications Input impedance: 330 Ω Output impedance: 330 Ω Gain: 25 dB Gain adjustment can be provided using either of the methods shown. Temperature Characteristics The LA1193M/V uses Vref temperature characteristics correction to hold the gain temperature characteristics to the low level of about 1 dB over the range –30 to +80°C. No. 4715-11/21 LA1193M, 1193V fr = 98.8 MHz, no input fu1 = 98.8 MHz, 1 kHz, 30% modulation fu2 = 99.6 MHz, no modulation IMQS is the interference 1 and 2 input levels such that when an interference signal with the same level is input to the mixer and distortion occurs at the mixer, the generated IM output has a S/N ratio of 30 dB. Figure 4 Mixer Circuit (Improved by 6.0 dBµ over previous products.) IF Gain adj |
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Ähnliche Beschreibung - LA1193M |
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