SP8053

Rev 0.3 (06-29-04) SP8053 10-Channel Photo Detector IC

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Vs

SW1

SW2

H

G

F

E

Select

Vcc

D

C

RF+

RF-

B

A

GND

SP8053

16-Pin

OPLGA

FEATURES

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Dual wavelength 650 and 780nm

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100MHz minimum Data channel bandwidth

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Built-in media switch

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Available in wafer form or

5.0 x 4.0 mm 16-pin OPLGA package

APPLICATION

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DVD and CD recording capability

GENERAL DESCRIPTION

The SP8053 is a 10-channel photo detector IC (PDIC) designed for DVD and CD recording

applications and can operate at wavelengths of 650 and 780 nm. The device contains 20 photo

detector elements, organized into six (sensor) arrays, four of them with four identical sensors (A

– D, a – d, E1 – H1, and E2 - H2 respectively) and two with a two sensors (e, h and f, g).

Sensors A – D, E1 – H1, and E2 – H2 are used in DVD mode, and sensors a – d, e – g are

used in CD mode. The ten channels consist of four high speed channels (A, B, C, and D), four

slow channels (E, F, G, H), and two balanced differential RF channels. The high speed channel

outputs provide signals from one of the two sensor arrays (A – D or a – d), depending the

position of the media switch (Select pin). A high logic level at the Select pin selects DVD mode

(A – D sensors) while a low level selects CD mode (a – d sensors). The E - H channels output

is used for a servo control. In CD mode channels E – H provide signal from e – h sensors

respectively. In DVD mode these channels provide the signal that is sum of identically named

channels (i.e. E = E1 + E2, F = F1 + F2, etc) The RF channels output is sum of ± (A + B + C +

D) or ± (a + b + c + d) channels (depending upon Select level), with identical weights given to all

channels.

The SP8053 is manufactured with an advanced BICMOS technology.

10 - Channel Photo Detector IC