ADVANCED
SP8127N
Rev 0.4 06/29/04. SP8127N High Speed Differential APC Amplifier
Copyright 2003 Sipex Corporation
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
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1
2
3
4
8
7
6
5
Vcc
Gain
Rc
GND
Vout (+)
Vout ()
Rg2
Rg1
SP8127N
8-Pin
OPLGA
FEATURES
Dual wavelength 650 and 780nm
100 MHz Bandwidth
300 V/s Slew Rate
5 ns Setting Time
10 mV Differential Output Offset Voltage
25
mV/
o
C Output Offset Voltage Drift
-6/+6 dB External Gain Adjust
Small 8-pin OPLGA package
APPLICATION
CD-R, and CD-RW
DVD+/-R, DVD+/-RW, and DVD-RAM
GENERAL DESCRIPTION
The SP8127N is a high-speed, differential output APC amplifier that integrates the photodiode
and adjustable gain block on one chip. Independent gain control allows individual adjustment for
780mn and 650nm wavelength operation, as found in CD/DVD optical storage drives. This allows the
user to control the laser power of the system in high-speed DVD+/-RW, DVD-RAM and CD-RW
systems. The wide 2V output swing also allows better system performance, through improved
dynamic range.
High Speed Differential APC Amplifier
ADVANCED
SP8127N
Rev 0.4 06/29/04. SP8127N High Speed Differential APC Amplifier
Copyright 2003 Sipex Corporation
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
page
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of
5
ABSOLUTE MAXIMUM RATINGS
These are stress ratings only and functional operation of the device at these ratings or any other
above those indicated in the operation sections of the specifications below is not implied. Exposure to
absolute maximum rating conditions for extended periods of time may affect reliability.
Supply Voltage (Vcc)..........................6.0V
Reference Voltage (Vs) ..................... 6.0V
Output Voltage (Vout)....................... Vcc
Junction Temperature (Tj)..................120
o
C
Storage Temperature............-40
C to +100C
Soldering Temperature.....................+235
C
RECOMMENDED OPERATING CONDITIONS
Supply Voltage (Vcc)........................4.5V to 5.5V
Operating temperature.....................-20C to +85
o
C
THERMAL SPECIFICATIONS
8-pin OPLGA (3 x 3.5mm) Package Thermal Resistance............ 75
o
C/W
ADVANCED
SP8127N
Rev 0.4 06/29/04. SP8127N High Speed Differential APC Amplifier
Copyright 2003 Sipex Corporation
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
page
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ELECTRICAL/OPTICAL SPECIFICATIONS
Unless otherwise noted: Vcc = 5V, output load: R
L
= 1k , C
L
= 20pF, gain 0 dB, ambient temperature
-20C Ta +85
o
C
Parameter Condition
Min.
Typ.
Max
Unit
Ta = 25
o
C, no signal, no load
15
Supply Current
-20 Ta +85
o
C, no signal, no
load
20
mA
Output Common Mode Voltage
No signal Vcc/2.2
Vcc/2
Vcc/1.8
V
Gain = 0dB, no signal
-10
10
Output Offset Voltage
Gain = +6dB, no signal
-20
20
mV
Gain = 0dB, no signal
-25
25
Output Offset Voltage Drift
Gain = + 6dB, no signal
-50
50
V/
o
C
Power Supply Rejection Ratio
(PSRR) *
Gain = 0dB, 4.5V Vcc 5.5V
55
76
dB
Output Sensitivity
Gain = 0dB
4560
5700
6840
V/W
Input Optical Power required to
produce a 2V differential output
swing
0.35mm laser beam diameter,
uniform density, Gain = 0dB
263 W
Photo Detector Active Area
0.245
mm
2
Gain = -6dB, 2Vpp step
5
7
Output Settling Time
Gain = 0dB, 2Vpp step
6
9
ns
Full Scale Output Voltage Swing
Differential voltage = (V+) (V-)
2
V p-p
Gain = -6dB, -3dB level
80
100
Bandwidth
Gain = 0dB, -3dB level
60
80
MHz
Gain Adjust Range
-6
+6
dB
*) PSRR = 20log (Vcc/Vout)
**) Gain Linearity = (Gain2 Gain 1)/Gain 1, where Gain = Vout/Pin. This test is done with current injection at the
wafer level.
PIN ASSIGNMENTS
Pin #
Pin Name
Pin Function
1
Vcc
Supply Voltage. Bypass to GND with ceramic capacitor 0.1F
2
Gain
Gain Switch Input. Low level selects Rg1, high level selects Rg2
3
Rc
Common connection point for Rg1 and Rg2
4 GND Power
Ground
5 Rg1
Gain
Adjust
1
6 Rg2
Gain
Adjust
2
7
Vout ()
Output Voltage Negative Swing
8 Vout(+) Output
Voltage
Positive
Swing
ADVANCED
SP8127N
Rev 0.4 06/29/04. SP8127N High Speed Differential APC Amplifier
Copyright 2003 Sipex Corporation
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
page
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of
5
OPLGA 8-pin PACKAGE DIMENSIONS
ADVANCED
SP8127N
Rev 0.4 06/29/04. SP8127N High Speed Differential APC Amplifier
Copyright 2003 Sipex Corporation
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
page
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of
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PHOTO DETECTOR PATTERN
ORDERING INFORMATION
Part number
Temperature range
Package Type
SP8127NDG
-20C + 85
0
C 8-pin
OPLGA
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