4.4 AM - MODE In the AM mode the lst IF is converted by the 2nd mixer into the 2nd IF in the 450 kHz range. Therefore a 2nd LO force input is part of the lC. The 2nd IF signal passes an automatic gain controlled IF amplifier and is then demodulated to the AF in a quasisynchronous demodulator. Switching to seek mode, the AGC time constant is reduced by a factor of 5, the AM IF counter output is switched on and the AF is muted. The AGC voltage is used as AM field strength and is fed to the combined field strength output.
HRW1002AS Price| | | | | | |
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| | | | NOF | 'MALIZED T( | ) |
| | | | ID@ 25IC VCEO = 10 V |
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HRW1002AS on stock| tWHC | Clock pulse width ("H" level) | 1.6 | | |
| tWLC | Clock pulse width ("L" level) | 1.6 | | |
| tr | Rising time of clock,data and latch | | | 0.4 |
| tf | Falling time of clock,data and latch | | | 0.4 |
| tSD | Data setup time | 0.8 | | |
| tHD | Data hold time | 0.8 | | |
| tSL | Latch setup time | 1 | | |
| tWHL | Latch pulse width | 1.6 | | |
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| Parameter | Symbol | Value | Unit |
| Channel - soldering pointl) BF1005, BF1005R BF1005W | Rthchs | 370 280 | K/W |
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