PI0256HSN, PI0512HSN, PI1024HSN

25-µm-Pitch Wide Aperture Spectroscopic Photodiode Arrays

Engineering Data Sheet

Page 1 of 8

March 13, 2002

Description

Peripheral Imaging Corporation's HSN series is family

of self-scanning photodiode solid-state linear imaging

arrays.

These photodiode sensors employ PIC’s

proprietary CMOS Image Sensing Technology to

integrate the sensors into a single monolithic chip.

These sensors are optimally designed for applications

in spectroscopy. Accordingly, these sensors contain a

linear array of photodiodes with an optimized geomet-

rical aspect ratio (25-µm aperture pitch x 2500-µm

aperture width) for helping to maintain mechanical

stability in spectroscopic instruments and for providing

a large light-capturing ability.

The family of sensors

consists of photodiode arrays of various lengths, 256,

512, and 1024 pixels.

The HSN photodiode arrays are mounted in 22-pin

ceramic side-brazed dual-in-line packages that fit in

standard DIP sockets. A diagram of its pinout configu-

ration is seen in Figure 1.

Features

•

Selectable saturation charge capacities. 65-pC

capacity for wider dynamic range. 25-pC for lower

noise readout.

•

Wide spectral response (180 – 1000 nm) for UV

and IR response.

•

NP junction photodiodes with superior resistance

to UV damage.

•

Low dark current.

•

Integration time up to 11 seconds at room te m-

perature.

•

Integration time extended to hours by cooling.

•

Anti-blooming circuitry.

•

High linearity.

•

Low power dissipation (less than 1 mW).

•

Geometrical structure for enhanced stability and

registration.

•

Standard 22-lead dual-in-line IC package.

Figure 1. Pinout configuration.

Sensor Characteristics

The Peripheral Imaging Corporation's self-scanned

HSN photodiodes are spaced on a 25-µm pitch. The

line density is 40 diodes/mm and accordingly the

overall die lengths of the different arrays vary with the

number of photodiodes.

For example, the 256-pixel

array is 6.4-mm long, the 512-pixel array is 12.8-mm

long, and the 1024-pixel array is 25.6-mm long. Each

array has four additional dummy photodiodes. On each

side, there are one dark (non-imaging) dummy photo-

diode and one imaging dummy photodiode. The height

of the sensors is 2500

µm. The tall, narrow apertures

make these sensors desirable for use in monochro-

mators and spectrographs.

NC

VSS

START

CLK

NC

VDD

EOS

NC

VSS

QOUT

VDD

22

21

20

19

18

17

16

15

14

13

12

Peripheral

Imaging

Corporation

1

2

3

4

5

6

7

8

9

10

11

VSS

VDD

ABG

ADDCAP

TD1

VSS

TD2

NC

NC

NC

ABD