Linear PDAs Feature User-Selectable Charge Capacities

June 1, 2002
Optimized for spectroscopy and HPLC applications, as well as other high-performance scientific instruments, the HSN family of linear CMOS photodiode arrays (PDAs) are available in array lengths of 256, 512 and 1,024 pixels and feature user-selectable

Optimized for spectroscopy and HPLC applications, as well as other high-performance scientific instruments, the HSN family of linear CMOS photodiode arrays (PDAs) are available in array lengths of 256, 512 and 1,024 pixels and feature user-selectable charge (Qsat) capacities ranging from 25 to 65 pC. On-chip capacitors are associated with each photodiode pixel, with the capacitors switched in and out of the circuit using a single control input. By adding capacitance to the pixels, the saturation charge can be increased to 65 pC for applications demanding a high dynamic range and high signal-to-noise ratio. With the capacitors disconnected, the photodiodes have an intrinsic charge capacity of 25 pC (typ.). At the reduced charge capacity, the photodiode arrays can operate with a lower reset (kTC) noise. The HSN family of self-scanning, solid-state, linear photodiode imaging arrays is made using a proprietary CMOS image sensing technology to integrate the sensors onto a single monolithic chip. The HSN sensors feature the popular 100:1 (2,500 µm x 25 µm) pixel aspect ratio useful for coupling to monochromators and spectrographs. Other key features of the linear PDAs include a wide spectral sensitivity (180 to 1,000 nm) for UV-to-IR response, resistance to UV damage, low dark current, low noise, high linearity, and low power dissipation. The photodiode arrays are housed in standard 22-pin ceramic, side-brazed, dual-inline packages that can be inserted into conventional 22-pin DIP sockets. In prototype quantities, the PDAs cost from $215 to $995 each. For more details, contact Chinlee Wang at PERIPERAL IMAGING CORP., San Jose, CA. (408) 428-0123.

Company: PERIPERAL IMAGING CORP.

Product URL: Click here for more information

About the Author

Staff

Articles, galleries, and recent work by members of Electronic Design's editorial staff.

Sponsored Recommendations

Comments

To join the conversation, and become an exclusive member of Electronic Design, create an account today!