EL6261C

Features:

• Autozero of output offset to<10mV
• 3 selectable gains; 8KΩ, 15KΩ, 40KΩ
• Space saving QSOP-24 package
• Differential Sum & Sum-Bar outputs
• Single 5V supply



Application

• DVD RAM, R/W and ROM
• CD R/W, R and ROM
• MO drives
• Optical Pickup pre-amplifier
• Servo positioning systems
• High speed instrumentation



Pinout




Description

   The EL6261C consists of 4 20MHz trans-impedance amplifiers and 480MHz trans-impedance amplifiers. The four 80Mhz amplifier outputs also are averaged to provide differential 80MHz outputs.

   The EL6261C is designed to amplify the photo diode currents for CD,DVD, or other photo diode pick-up applications.

   Two TTL/CMOS compatible inputs select the gain for all eight amplifiers EL6261C.The gain settings are 8KΩ, 15KΩ and 40KΩ for all channels.The sum and sumbar outputs are 11KΩ, 20KΩ and 53KΩ single ended. Gain matching is typically 3%, channel to channel. An autozero input brought high after power up reduces the output offsets to
less than 10mV.

   The E,F,G,H channel bandwidths are 20MHz for all gains and reasonable input and output loads. The EL6261C A,B,C,D,S,S channels have bandwiths of 80MHz, 45MHz, and 25MHz at low, middle, and high gains respectively.

   Each amplifier EL6261C output can sink or source up to 5mA, and their outputs can swing 1Vp-p at full bandwidth.

   The EL6261C operates from a single +5V supply, and is available in QSOP-24 package. It is specified for operation from -0°C to 70°C