Product Overview
Precision Analog With the PMI Name Still Printed On It
Condition
Rated New and unused. Five photos were taken for this listing and they show two physically different devices: one with a brown ceramic body marked PMI AMP 01, EX on the second line, and a small glyph ahead of 8616 on the third, and one with a black ceramic body marked PMI, AMP01EX, T9508, and F11463 F. Only one device is sold here. Both photograph clean, with crisp white printing and full, unclipped leads sitting in line; the leads on the black-body piece read brighter to the camera than those on the brown-body piece, which is normal for parts marked years apart. No bent, trimmed, or resoldered leads are visible in these photos, and neither device shows solder on the pins in the frames taken. Against the gridded mat the body of each runs a little under an inch end to end.
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Product Overview
This is a single AMP01EX, the low noise precision instrumentation amplifier from Precision Monolithics, in an 18-pin dual in line ceramic package with nine leads per side. PMI marked its own name on the top of the package, and the photographed devices carry that marking along with their lot and date lines, so the part identifies itself without a datasheet in hand. The AMP-01 family is a monolithic instrumentation amplifier built for the front end of precision measurement work, where a small differential signal has to survive its trip to an ADC, and gain in the family is set by an external resistor ratio rather than by internal trimming. What the EX suffix implies for temperature range and guaranteed specification limits is not confirmed here, and no other grade marking is visible in these photos, so verify the grade against the AMP01 datasheet before designing it in. One device ships against this listing; the photographs describe the two pieces that sat in front of the camera, not a lot.
Key Features
- Marked PMI AMP01EX, the low noise precision instrumentation amplifier from the AMP-01 family
- 18-pin dual in line ceramic package, nine leads per side, confirmed by pin count in the photos
- Lot and date lines legible on both photographed devices: 8616 on one, T9508 F11463 F on the other
- Full length, unclipped leads in the two frames that show them - bright on the black-body piece, duller grey on the brown-body piece
- Sold as one device, rated New and unused
- Gain range, CMRR, supply limits, and EX grade temperature range not confirmed here - verify against the AMP01 datasheet before use
Applications
- A bench tech repairing a 1980s or 1990s data acquisition card whose bridge front end called out an AMP-01 by number
- An instrumentation designer breadboarding a strain gauge or thermocouple amplifier and wanting the period-correct precision part rather than a modern substitute
- A restorer matching an original bill of materials on legacy analog test gear where nothing else drops into the 18-pin ceramic footprint
- An analog hobbyist stocking one good instrumentation amplifier for the next low level measurement project
Frequently Asked Questions
What exactly is printed on the device?
The brown-body piece reads PMI AMP 01 on the first line, EX on the second, and a small glyph followed by 8616 on the third. The black-body piece reads PMI, AMP01EX, T9508, and F11463 F across four lines. Both resolve to the same part number, AMP01EX, with different lot and date lines.
Why do the photos show two different chips?
Two devices were put in front of the camera and their marking styles differ. This listing sells one device, and the markings on the piece that ships may be either of the two shown, so treat the photos as a record of the part number and package rather than a promise of a specific date code. If a particular date line matters to your build, ask before ordering.
What package is this, and how big is it?
An 18-pin ceramic dual in line package. Nine leads per side are countable in the photos, and against the gridded mat the body runs a little under an inch end to end. Lead spacing and body width are not readable in these photos, so check the mechanical drawing in the AMP01 datasheet if the footprint is tight.
Which specifications are confirmed here?
The part number, the manufacturer marking, the package, the lead condition, and the lot and date lines, all read directly off the device. Gain range, common mode rejection, supply voltage limits, and what the EX suffix guarantees for temperature are not confirmed by us. Verify those against the datasheet before use.
Why buy this one amplifier instead of taking a chance on a surplus lot?
Because an instrumentation amplifier is a part you socket once, not a part you count out by the handful, and the alternative is usually a bag of unmarked chips from an auction pallet where nobody photographed anything. Here you get one device, with the maker's mark, the part number, the lead condition, and the package all shown before you spend anything. Shipping is a flat $8, free once your order passes $28, and orders leave our Idaho warehouse the same or next business day.
Precision Monolithics made its name chasing the microvolts other chips rounded away, and the AMP-01 was the part it built to go get them. Decades after that marking was struck into the ceramic, the next bridge or thermocouple it reads is yours.
