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PDF EL6262CU Data sheet ( Hoja de datos )
| Número de pieza | EL6262CU | |
| Descripción | Quad 20MHz & Quad/ 70MHz/ Switched Gain Pre-Amp | |
| Fabricantes | Elantec Semiconductor | |
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EL6262C - Product Brief
Quad 20MHz & Quad, 70MHz, Switched Gain Pre-Amp
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
Applications
• DVD RAM, RW, and ROM
• CD RW, R and ROM
• MO drives
• Optical Pickup pre-amplifier
• Servo positioning systems
• High speed instrumentation
Ordering Information
Part No
EL6262CU
Temp. Range
Package
0°C to +70°C 24-Lead QSOP
Outline #
MDP0040
General Description
The EL6262C consists of 4 20MHz trans-impedance amplifiers and 4
70MHz trans-impedance amplifiers. The four 70MHz amplifier out-
puts also are averaged to provide differential 70MHz outputs.
The EL6262C 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 ampli-
fiers. The gain settings are 8KΩ, 15KΩ, and 40KΩ for all channels.
The sum and sumbar outputs are 11KΩ, 20KΩ, and 45KΩ single
ended. Gain matching is typically 3%, channel to channel. An auto-
zero input brought high after power up reduces the output offsets to
less than 10mV.
The E, F, G, and H channel bandwidths are 20MHz for all gains and
reasonable input and output loads. The A, B, C, D, S, and S channels
have bandwidths of 70MHz, 46MHz, and 32MHz at low, middle, and
high gains respectively after driving 25cm of flex circuit.
Each amplifier output can typically sink or source up to 5mA and their
outputs can swing 1VP-P at full bandwidth.
The EL6262C operates from a single +5V supply and is available in
QSOP-24 package. It is specified for operation from -0°C to 70°C.
Connection Diagram
GAIN 0 SELECT 1
GAIN 1 SELECT 2
REF INPUT 3
A INPUT 4
B INPUT 5
C INPUT 6
D INPUT 7
0V (VSS) 8
E INPUT 9
F INPUT 10
G INPUT 11
H INPUT 12
24 AZ INPUT
23 SUM OUTPUT
22 SUM OUTPUT
21 A OUTPUT
20 B OUTPUT
19 C OUTPUT
18 D OUTPUT
17 +5V (VDD)
16 E OUTPUT
15 F OUTPUT
14 G OUTPUT
13 H OUTPUT
Note: All information contained in this data sheet has been carefully checked and is believed to be accurate as of the date of publication; however, this data sheet cannot be a “controlled document”. Current revisions, if any, to these
specifications are maintained at the factory and are available upon your request. We recommend checking the revision level before finalization of your design documentation.
© 2001 Elantec Semiconductor, Inc.
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