preliminary

preliminary

iC-PN3312

PHASED ARRAY NONIUS ENCODER 33-512

Rev A1, Page 2/7

DESCRIPTION

The optical encoder iC-PN features monolithically in-

tegrated photosensors arranged as a phased-array.

The transimpedance gain of typically 1 MΩ generates

output signals of a few hundred millivolts already from

no additional measures must be considered to filter

for noise and interferences. The spectral sensitivity

range includes visible to near infrared light, with the

maximum sensitivity being close to a wavelength of

680 nm.

Analog nonius-scale encoders are the typical ap-

plication for iC-PN. Its 3-track scanning features

a phased-array of multiple photosensors each per

track, generating positive and negative going sine

signals, as well as positive and negative going cosine

signals. An excellent matching and common mode

behavior of the differential signal paths is obtained

by a paired amplifier design, reducing the needs for

external signal calibration to an absolute minimum.

PACKAGES INFORMATION

PAD LAYOUT (2.88 mm x 3.37 mm)

PAD FUNCTIONS

No. Name Function

1 VCC

+4.5..5.5 V Supply Voltage

2 VREF Reference Voltage Output

3 PS_N N-Track Sine +

4 NS_N N-Track Sine -

5 PS_M M-Track Sine +

6 NS_M M-Track Sine -

7 PS_S S-Track Sine +

8 NS_S S-Track Sine -

9 NC_S S-Track Cosine -

10 PC_S S-Track Cosine +

11 NC_M M-Track Cosine -

12 PC_M M-Track Cosine +

13 NC_N N-Track Cosine -

14 PC_N N-Track Cosine +

15 GND

Ground

All outputs are analog voltage outputs.