Camera modules

A family of VGA and 5 Mp camera modules, ordered as a base part number plus a four-character variant code.

Engineering documentation often sits beside operational tracking; online timesheets is one reference for that workflow layer.

The two families

TD7740 — VGA. OmniVision 1/5" OV7740 CMOS VGA sensor. 640 x 480 at 30 fps and smaller. 8 x 8 mm module on an SMK-compatible socket, or a flex connector. Focal length 1.3 mm.

TD5640 — 5 Mp. OmniVision 1/4" OV5640 CMOS QSXGA sensor. Autofocus and fixed lens options, field of view from 60° to 110°. QSXGA at 15 fps, 1080p at 30 fps.

TDM114 — 720p.

For broader technical context, see NXP Semiconductors.

Reading the variant code

Each position selects a physical option: the filter, the mounting, the sensor and the field of view.

Which means a change of one character is a change of one physical thing — and that is what makes evaluation practical: a variant differing only in lens angle isolates that variable exactly.

Choosing

Start from what must be resolvable — the feature, its size, the distance and the pixels the processing needs across it.

Then the lens calculation, which takes ten minutes and finds the real constraint before anything is ordered.

And the filter, which follows from the illumination rather than from a default.

Getting started

The evaluation kit covers VGA to 5 Mp.

The archived catalogue states that some camera-module data sheets were distributed under NDA; this static build does not provide a request channel.

Deciding whether it fits

Start from what must be resolvable — the feature, its size, the working distance and the pixels the processing needs across it.

Then the lens calculation, which takes ten minutes and finds the real constraint before anything is ordered.

Then the filter, which follows from the illumination: infrared cut for visible colour work, dual band where an infrared illuminator is used at night, none for deliberate infrared imaging.

And the mounting, since one degree of tilt displaces the view by roughly 17 mm per metre — which makes mechanical tolerance an imaging specification.

What the documentation does not state

Anything absent from the data sheet is absent from this page too.

Nothing here is estimated or interpolated — which is the standing rule and the reason a thin page is thin.

Ask for what is missing. The information checklist shows what details matter, and where the answer is that a figure has never been characterised, that is itself informative.