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THS720: Difference between revisions
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An Intel E28F008SA120 Flash Memory chip is used for setup, cal and waveform storage. | An Intel E28F008SA120 Flash Memory chip is used for setup, cal and waveform storage. | ||
The switching power supply is run by a TL1451A, a TI two channel boost/buck controller. | The switching power supply is run by a TL1451A, a TI two channel boost/buck controller. | ||
The DMM is a | The DMM is a 3¾-digit Maxim MAX134CQH. | ||
The analog scope section starts with an attenuator hybrid driven by | The analog scope section starts with an attenuator hybrid driven by four channels of | ||
HP (now Avago) optoisolators and NEC relays. The hybrid contains the AC coupling | HP (now Avago) optoisolators and NEC relays. The hybrid contains the AC coupling | ||
capacitor and many laser trimmed resistors along with a custom Tek [[165-2545-00]] BGA. | capacitor and many laser trimmed resistors along with a custom Tek [[165-2545-00]] BGA. | ||
The signal then passes through a single-ended to differential transformer and | The signal then passes through a single-ended to differential transformer and | ||
goes to a custom labeled Maxim | goes to a custom labeled Maxim two-channel high speed A/D converter [[234-1503-20]]. | ||
Note that the differential signal layout for channel 2 is not as good as channel 1 | Note that the differential signal layout for channel 2 is not as good as channel 1 | ||
since one side of channel 2 goes through 2 vias not found on channel 1. | since one side of channel 2 goes through 2 vias not found on channel 1. | ||