ATR1874-PZQW ATMEL [ATMEL Corporation], ATR1874-PZQW Datasheet

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ATR1874-PZQW

Manufacturer Part Number
ATR1874-PZQW
Description
10-channel High-speed Photo Detector IC for DVD/CD
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
Features
Applications
1. Description
The ATR1874 is a Photo Detector Integrated Circuit (PDIC) for operation in
high-speed DVD applications like DVD-RAM and DVD+/-RW at a wavelength of
650 nm and CD-RW at a wavelength of 780 nm. It includes 10 channels with 4 differ-
ent gain steps. The four channels A, B, C, and D are high-speed channels whereas
the channels E1G1, E2G2, F1H1, F2H2 are high-gain channels at average speed for
tracking control, sector information etc. The remaining two channels RF+ and RF– are
RF paraphase outputs. Channels A to D are summed together at the RF outputs.
Setting of the gain and entering/exiting sleep mode is controlled using the two tri-state
inputs SW1 and SW2.
All channels are set to tri-state during sleep mode.
Due to its small package size the ATR1874 is especially suited for application with
restricted height requirements like SLIM and UltraSLIM drives.
650 nm and 780 nm Wavelengths Supported
150 MHz Data Channel Bandwidth
Fast Settling Time
4 Configurable Gain Steps
12 Photo Diodes
Low Offset Voltage
Power-down Mode
Pb-free Optical 16-pin Package
DVD +RW with CD-RW Capability
DVD -RW with CD-RW Capability
DVD-RAM with CD-RW Capability
DVD 18x Up to 20x Application
Recordable Optical Data Storage Devices
10-channel
High-speed
Photo Detector
IC for DVD/CD
ATR1874
Summary
Preliminary
NOTE: This is a summary document.
The complete document is available
under NDA. For more information,
please contact your local Atmel sales
office.
4998AS–DVD–05/07

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ATR1874-PZQW Summary of contents

Page 1

... Setting of the gain and entering/exiting sleep mode is controlled using the two tri-state inputs SW1 and SW2. All channels are set to tri-state during sleep mode. Due to its small package size the ATR1874 is especially suited for application with restricted height requirements like SLIM and UltraSLIM drives. 10-channel ...

Page 2

... Figure 1-1. Block Diagram VREF SW1 Gain Switch SW2 - F2H2 + - F1H1 + - E2G2 + - E1G1 + GND ATR1874 [Preliminary ZERO 2.05V - + VCC 0.5* + RF+ 0. GND 4998AS–DVD–05/07 ...

Page 3

... Reference voltage Ground Output channel F2H2 Output channel F1H1 Output channel E1G1 Output channel E2G2 Gain switch Gain switch Output RF– Output RF+ Output channel A Output channel D Output channel C Output channel B Ground Supply voltage ATR1874 [Preliminary] 16 VCC 15 GND RF+ 9 ...

Page 4

... Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Parameters Supply voltage Input voltage at any input Storage temperature Soldering temperature QFN_Open package 4. Recommended Operating Conditions Parameters Supply voltage Reference voltage Operating temperature range ATR1874 [Preliminary] 4 Symbol Value V –0 –0.5 to VCC – 0 – ...

Page 5

... Photo Diode Arrangement Figure 5-1. Photo Diode Arrangement Photo diode is symmetrically centered to the center of the chip and package Symmetrical axis is parallel to the package 4998AS–DVD–05/07 ATR1874 [Preliminary ...

Page 6

... Ordering Information Extended Type Number ATR1874-PZQW 7. Package Information Package: QFN_OPEN_4 x 3.5_16L_W1 x 1.06 Dimensions ±0.0508 A1 Corner Top View 1 8 1.06 3.5 ±0.1 Drawing-No.: 6.543-5135.01-4 Issue: 2; 18.01.07 ATR1874 [Preliminary] 6 Package Remarks QFN_OPEN_4x3.5_16L Taped and reeled, Pb-free (Pd Center to Pkg Center) Side View 0.25 16 0.9 ±0.1 technical drawings according to DIN ...

Page 7

Atmel Corporation 2325 Orchard Parkway San Jose, CA 95131, USA Tel: 1(408) 441-0311 Fax: 1(408) 487-2600 Regional Headquarters Europe Atmel Sarl Route des Arsenaux 41 Case Postale 80 CH-1705 Fribourg Switzerland Tel: (41) 26-426-5555 Fax: (41) 26-426-5500 Asia Room 1219 ...

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