ADVANCED

SP8067

Rev 0.0 (11-22-04)

SP8067 – High Speed 11-Channel PDIC

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Vs

GND

GK

HL

EI

FJ

SW1

SW2

WRF

D

C

B

A

RF+

RF-

SP8067

16-Pin

OPLGA

FEATURES

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Dual wavelength 650 and 780nm

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Data channel bandwidth 130 MHz

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Selectable gain settings

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Group delay error 1ns up to 86MHz

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250V/

µs Slew rate

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Small 16-pin OPLGA package

APPLICATION

•

DVD-RAM with CD-RW capability

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DVD+/-RW with CD-RW capability

•

Writable data storage optical devices

GENERAL DESCRIPTION

The SP8067 is an eleven-channel photo detector IC (PDIC) specially designed for high speed

DVD-RAM and DVD+/-RW applications and can operate at wavelengths of 650 and 780 nm.

The device contains three photo diode (sensor) arrays, with each having four sensors (A – D, E

– H, and I – L respectively). The eleven channels consist of four high speed channels (A, B, C,

and D), four slow channels (EI, FJ, GK, and HL), two fast summing channels with differential

output (RF+ and RF-), and one additional WRF channel. The four slow channels output is the

sum of signals from two sensors of the same sensor array (E + I, F + J, G + K, and H + L). The

WRF channels output is four times the sum of A + B + C + D channels, while the output signal

of differential channels RF+ and RF- is only 0.5 of this sum.

The SP8067 has two logic inputs for gain control that operate as tri-state logic input (Low, Mid,

and High states). These states are used to select gain factors that affect all channels. The

WRF channel is active only during Write Modes, while the RF+ and RF- channels are active

only during Read Modes. If not active, the WRF channel is in tri-state (Hi-Z) mode, while the RF

channels are fixed at their respective reference voltages (2.0v for RF+ and 3.0v for RF-

channel).

The SP8067 is manufactured with an advanced 10GHz BICMOS technology.

High Speed 11-channel Photo Detector IC