sp8110er Exar Corporation, sp8110er Datasheet
sp8110er
Manufacturer Part Number
sp8110er
Description
Two-channel Modulation Ic For Laser Diode
Manufacturer
Exar Corporation
Datasheet
1.SP8110ER.pdf
(3 pages)
FEATURES
APPLICATION
GENERAL DESCRIPTION
The SP8110 is a Two-Channel Modulation IC utilizing high frequency current to suppress the
noise of grounded laser diodes. Modulation frequency is adjusted in both channels
simultaneously by an external resistor Rf tied to the ground. The amplitude of the high
frequency current is set for each channel separately by a DC input current applied to the
appropriate input pin (IA or IB for Laser A or Laser B, respectively). Current gain from input to
output is 100mA/mA (typical).
The input current at pins IA and IB is monitored to determine which channel is active. In the
event input current in both channels is below the active threshold level (approximately 2.65mA),
the SP8110 will enter Power Save mode. In the event a valid input current above the active
threshold level is present on both inputs, an Error mode is assumed and the outputs of both
channels are disabled. Supply current levels in Power Save and Error modes are below 0.2 and
0.8 mA respectively (maximum values).
The SP8110 is manufactured in 0.5/0.6 µm CMOS technology.
Rev 0.1 (12-03-03): SP8110 – Two-Channel Modulation IC
SIPEX RESERVES THE RIGHT TO MAKE CHANGES TO THIS DATASHEET. CALL FOR UPDATES: 1-978-667-8700.
SIPEX CONFIDENTIAL, PRELIMINARY & PROPRIETARY. DO NOT DISTRIBUTE
OR COPY
N
N
N
N
N
N
N
Two-Channel Modulation IC for Laser Diode
5V Single supply voltage
Two output channels, suitable for different
wavelength laser diodes
Oscillator frequency is adjustable in both
channels simultaneously
Oscillator amplitude is adjustable for each
output separately up to 130mA
Operates two grounded laser diodes
Small DFN 2 x 3mm package
DVD-ROM or DVD-Video applications utilizing twin laser diodes
Advance
Vcc
Rf
IA
IB
1
2
3
4
SP8110
SP8110
page
8
7
6
5
Vcc-out
LD_A
GND
LD_B
1
of
3
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sp8110er Summary of contents
Page 1
Two-Channel Modulation IC for Laser Diode FEATURES 5V Single supply voltage N Two output channels, suitable for different N wavelength laser diodes Oscillator frequency is adjustable in both N channels simultaneously Oscillator amplitude is adjustable for each N output separately ...
Page 2
INPUT CHARACTERISTICS: IA/IB INPUT CURRENT VS INPUT VOLTAGE MODE SELECTION IA current IB current > 2.65 mA < 2.5 mA < 2.5 mA > 2.65 mA > 2.65 mA > 2.65 mA < 2.5 mA < 2.5 mA PIN ASSIGNMENTS ...
Page 3
... DFN 8-PIN PACKAGE DIMENSIONS ORDERING INFORMATION Part number SP8110ER Rev 0.1 (12-03-03): SP8110 – Two-Channel Modulation IC SIPEX RESERVES THE RIGHT TO MAKE CHANGES TO THIS DATASHEET. CALL FOR UPDATES: 1-978-667-8700. SIPEX CONFIDENTIAL, PRELIMINARY & PROPRIETARY. DO NOT DISTRIBUTE OR COPY Advance Temperature range 0 - SP8110 Package Type ...