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LA1193M Datasheet(PDF) 11 Page - Sanyo Semicon Device |
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LA1193M Datasheet(HTML) 11 Page - Sanyo Semicon Device |
11 / 22 page LA1193M, 1193V No.4715-11/22 3D-AGC Sensitivity, ∆f and V20 Characteristics AGC sensitivity W-AGC sensitivity N-AGC sensitivity Desired station AGC sensitivity V20 (desired station field strength) Two signal sensitivity suppression improvement ∆F Figure 3 3D-AGC Sensitivity, ∆f and V20 Characteristics — The W-AGC sensitivity is determined by the antenna RF circuit selectivity independently of V20. — The N-AGC sensitivity is determined by the antenna, RF and mixer circuit total selectivity when V20 is 0.6V or greater. It is determined by that selectivity and V20 when V20 is over 0.6V. — The improvement in two-signal sensitivity suppression is the shaded area in the total AGC sensitivity and corresponds to the section occupied by the N-AGC. 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 : 15dB µ Mixer input IMQS* : 90.5dB µ Note : *Mixer input IMQS is defined as follows : fr = 98.8MHz, no input fu1 = 98.8MHz, 1kHz, 30% modulation fu2 = 99.6MHz, 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 30dB. OSC MIX Figure 4 Mixer Circuit (Improved by 6.0dB µ over previous products.) |
Similar Part No. - LA1193M_08 |
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Similar Description - LA1193M_08 |
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