TC221, TC225, TC227 SMALL-FORMAT CCD IMAGE SENSORS

SOCS037A - DECEMBER 1991

features

Full-Frame Operation
- 190 (H) × 190 (V) Active Elements for TC221
- 285 (H) × 285 (V) Active Elements for TC225
- 102 (H) × 102 (V) Active Elements for TC227
Dark Reference Pixels
9-um Square Pixels
Single-Phase Clocking
Low Dark Current
Dynamic Range . . . More Than 60 dB
High Uniformity of Photoresponse
High Sensitivity
Low-Noise Operation
Solid State Reliability With No Residual Imaging, Image Burn-In, Microphonics, or Image Distortion

description

The TC221, TC225 and TC227 are full-frame charge-coupled device (CCD) image sensors designed specifically for medical and industrial applications where ruggedness and small size are required. The image-area diagonal measures 1.3 mm for the TC227, 2.4 mm for the TC221, and 3.63 mm for the TC225. The image sensors contain, in addition to dark reference pixels, 190, 285, and 102 active lines with 190, 285, and 102 active pixels per line, respectively. The antiblooming feature is activated by supplying clock pulses to the antiblooming gate, an integral part of each image-sensing element. The charge is converted to signal voltage at 9.5 uV per electron by a high performance structure with built-in automatic reset and a voltage-reference generator. The signal is further buffered by a low-noise two-stage source-follower amplifier to provide high output-drive capability.

The TC221 and TC227 are supplied in 6-pin molded plastic packages; the TC225 is supplied in a 10-pin molded plastic package. The glass window can be cleaned using any standard method for cleaning optical assemblies or by wiping the surface with a cotton swab soaked in alcohol.

This MOS device contains limited built-in gate protection. During storage or handling, the device leads should be shorted together or the device should be placed in conductive foam. In a circuit, unused inputs should always be connected to SUB. Under no circumstances should pin voltages exceed absolute maximum ratings. Avoid shorting OUTn to ADB during operation to prevent damage to the amplifier. The device can also be damaged if the output terminals are reverse-biased and an excessive current is allowed to flow. Specific guidelines for handling devices of this type are contained in the publication Guidelines for Handling Electrostatic-Discharge-Sensitive (ESDS) Devices and Assemblies available from Texas Instruments.

Title: SMALL-FORMAT CCD IMAGE SENSORS
Product Family: CCD IMAGERS
Device Functionality: CCD
Orderable Devices: TC221-30, TC221-40, TC225-30, TC225-40, TC227-30, TC227-40

View the complete PDF datasheet: socs037b.pdf (215 K Bytes) (Requires Acrobat Reader 3.x)

View more information about generic part numbers:TC221, TC225, TC227

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