50M10
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The Tektronix 50M10 is an analog-to-digital converter card for the MI5010.
Key Specifications
| Conversion time | ≤32 μs |
|---|---|
| Range | +100 mV / +1 V / +10 V / +100 V FS, selectable by on-board jumpers |
| Resolution | 12 bits (4096 parts) |
| Input isolation | ≤340 V (DC plus peak AC) |
Prices
| Year | Catalog price | In 2026 dollars |
|---|---|---|
| 1984 | $850 | ~$2,700 |
| 1986 | $895 | ~$2,700 |
| 1988 | $895 | ~$2,500 |
| 1990 | $895 | ~$2,200 |
Internals
The ADC is a successive-approximation type, consisting of an AD565 12-Bit DAC and a successive approximation register (AM25L04). The analog section is optically isolated and floating, supplied by a discretely implemented DC/DC converter. Instead of transmitting the 12 SAR result bits using optocouplers, the50M10 employs a second, identical SAR on the digital circuit side that runs synchronously with the one on the floating side that drives the DAC, thereby reducing the number of optocouplers needed to just three (clock, start, serial data).
Pictures
Components
Some Parts Used in the 50M10
| Part | Part Number(s) | Class | Description | Used in |
|---|---|---|---|---|
| 2716 | Monolithic integrated circuit | 2K×8 EPROM | 4041 • 4692 • 50M10 • FG5010 • SI5010 • TransEra 641-RTC | |
| AM25L04 | Monolithic integrated circuit | 12-bit successive approximation register | 50M10 | |
| Motorola 6821 | 156-0427-03 • 156-1205-00 | Monolithic integrated circuit | "Peripheral Interface Adapter (PIA)" | 067-1137-99 • 4041 • 4052 • 4052A • 4054 • 4054A • 4662 • 4692 • Keithley 191 • 50M10 • 50M20 • 50M30 • 50M40 • 50M70 • 7250 • 7A16P • 7A29P • 7B90P • CG551AP • CG5001 • CG5010 • CG5011 |