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Features
* * * * * * * *
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
Applications
* * * * *
DVD +RW with CD-RW Capability DVD -RW with CD-RW Capability DVD-RAM with CD-RW Capability DVD 18x Application Recordable Optical Data Storage Devices
10-channel High Speed Photo Detector IC for DVD/CD ATR0874 Summary Preliminary
1. Description
The ATR0874 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 different gain steps. The four channels A, B, C, 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 ATR0874 is especially suited for application with low height requirements like SLIM and UltraSLIM drives.
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Figure 1-1.
Block Diagram
VCC VREF
0.5*
+ SW1 SW2 Gain Switch
RF+
0.5*
-
RF-
F2H2
+
H1
H2
+
B
F1H1
+
G1
G2
+
D
B
C
E2G2
+
A D
+
C
E1G1
+
F1
F2
+
A
E1
E2
GND
GND
2
ATR0874 [Preliminary]
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ATR0874 [Preliminary]
2. Pin Configuration
Figure 2-1. Pinning QFN16L
VREF GND F2H2 F1H1 E1G1 E2G2 SW1 SW2 1 2 3 4 5 6 7 8 H1 16 15 14 13 12 11 10 9 VCC GND B C D A RF+ RF-
Table 2-1.
Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Pin Description
Symbol VREF GND F2H2 F1H1 E1G1 E2G2 SW1 SW2 RFRF+ A D C B GND VCC Type Analog Supply Analog Analog Analog Analog Tri-state Tri-state Analog Analog Analog Analog Analog Analog Supply Supply Function Reference voltage Ground Output channel F2H2 Output channel F1H1 Output channel E1G1 Output channel E2G2 Gain switch Gain switch Output RFOutput RF+ Output channel A Output channel D Output channel C Output channel B Ground Supply voltage
3
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3. Absolute Maximum Ratings
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification is not implied. 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 COB package Soldering temperature QFN_Open package Symbol VCC Vin Tstg Tsol Tsol Value -0.5 to +6.0 -0.5 to VCC - 0.5 -40 to +100 235 260 Unit V V C C C
4. Recommended Operating Conditions
Parameters Supply voltage Reference voltage Operating temperature range Symbol VCC VREF Tamb Value 4.5 to 5.5 1.5 to 2.3 0 to +80 Unit V V C
4
ATR0874 [Preliminary]
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ATR0874 [Preliminary]
5. Photo Diode Arrangement
Figure 5-1. Phote Diode Arrangement
f b
H1
H2
c f
G1 Photo diode is symmetrically centered to the center of the chip and package Symmetrical axis is parallel to the package e a d
G2
B d
C f
A
D
a e
f
F1
F2
c f
E1
E2
b f
5
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6. Ordering Information
Extended Type Number ATR0874-PZQW Package QFN_OPEN_4x3.5_16L Remarks Taped and reeled, Pb-free
7. Package Information
Package: QFN_OPEN_4x3.5_16L Dimensions in mm
00.0508 (Pd Center to Pkg Center)
technical drawings according to DIN specifications
00.0508 (Pd Center to Pkg Center) 0.230.05
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A1 Corner Top View 1 16 Side View 16 15 14 13 12 11 10 9 Bottom View
A1 Corner
8
9
1 2 3 4 5 6 7 8
0.5 nom. 0.250.08
40.1
1 0.90.1
0.25 3.50.15
0.40.1
Drawing-No.: 6.543-5116.01-4 Issue: 1; 02.03.05
6
ATR0874 [Preliminary]
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