SP8127

ADVANCED SP8127 High Speed Differential APC Amplifier FEATURES • • • • • • • • Dual wavelength 650 and 780nm 100 MHz Bandwidth 300 V/µs Slew Rate 5 ns Setting Time 10 mV Differential Output Offset Voltage 25 mV/oC Output Offset Voltage Drift -6/+6 dB External Gain Adjust Small 8-pin OPLGA package Vcc Gain Rc GND 1 2 3 4 SP8127 8-Pin OPLGA 8 7 6 5 Vout (+) Vout (–) Rg2 Rg1 APPLICATION • • CD-R, and CD-RW DVD+/-R, DVD+/-RW, and DVD-RAM GENERAL DESCRIPTION The SP8127 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. Rev 0.8 06/29/04. SP8127 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 1 of 5 ADVANCED ABSOLUTE MAXIMUM RATINGS SP8127 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 oC Storage Temperature………...-40°C to +100°C Soldering Temperature…………………+235°C RECOMMENDED OPERATING CONDITIONS Supply Voltage (Vcc)…………………...4.5V to 5.5V Operating temperature…………………-20C to +85oC CD Wavelength……….………………….……780nm DVD Wavelength……..……………………….650nm THERMAL SPECIFICATIONS 8-pin OPLGA (3 x 3.5mm) Package Thermal Resistance………… 75 oC/W Rev 0.8 06/29/04. SP8127 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 2 of 5 ADVANCED ELECTRICAL/OPTICAL SPECIFICATIONS Parameter Supply Current Output Common Mode Voltage Output Offset Voltage Output Offset Voltage Drift Power Supply Rejection Ratio (PSRR) * Output Sensitivity Input Optical Power required to produce a 2V differential output swing Photo Detector Active Area Output Settling Time Full Scale Output Voltage Swing Bandwidth Gain Adjust Range SP8127 Min. Typ. 15 Max 20 Vcc/2.2 -10 -20 -25 -50 55 4560 Vcc/2 Vcc/1.8 10 20 25 50 Unit mA V mV µV/oC dB 6840 V/W µW mm2 7 9 ns V p-p 100 80 +6 MHz dB Unless otherwise noted: Vcc = 5V, output load: RL = 1kΏ, CL = 20pF, gain 0 dB, ambient temperature -20C ≤Ta ≤ +85 oC Condition Ta = 25 oC, no signal, no load o -20 ≤Ta ≤ +85 C, no signal, no load No signal Gain = 0dB, no signal Gain = +6dB, no signal Gain = 0dB, no signal Gain = + 6dB, no signal Gain = 0dB, 4.5V ≤ Vcc ≤ 5.5V Gain = 0dB 0.28mm laser beam diameter, uniform density, Gain = 0dB Gain = -6dB, 2Vpp step Gain = 0dB, 2Vpp step Differential voltage = (V+) – (V-) Gain = -6dB, -3dB level Gain = 0dB, -3dB level 76 5700 263 0.098 5 6 2 80 60 -6 *) 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 # 1 2 3 4 5 6 7 8 Pin Name Vcc Gain Rc GND Rg1 Rg2 Vout (–) Vout(+) Pin Function Supply Voltage. Bypass to GND with ceramic capacitor 0.1µF Gain Switch Input. Low level selects Rg1, high level selects Rg2 Common connection point for Rg1 and Rg2 Power Ground Gain Adjust 1 Gain Adjust 2 Output Voltage Negative Swing Output Voltage Positive Swing Rev 0.8 06/29/04. SP8127 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 3 of 5 ADVANCED OPLGA 8-pin PACKAGE DIMENSIONS SP8127 Rev 0.8 06/29/04. SP8127 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 4 of 5 ADVANCED PHOTO DETECTOR PATTERN SP8127 ORDERING INFORMATION Part number SP8127DG Temperature range -20C + 850C Package Type 8-pin OPLGA Rev 0.8 06/29/04. SP8127 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 5 of 5