ATR0885 Datasheet, PDF (3/6 Pages) ATMEL Corporation – 3-output Laser Driver for HD-DVD/ Blu-ray/DVD/ CD-ROM

2. Pin Configuration
Figure 2-1. Pinning QFN24
ATR0885 [Preliminary]
GND
SEL1
SEL2
ENOSC
VCCS
PDOUT
24 23 22 21 20 19
1
18
2
17
3
16
4
15
5
14
6
13
7 8 9 10 11 12
IOUTA
VCCA
IOUTB
VCCB
IOUTC
VCCC
Table 2-1.
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Paddle
Pin Description
Symbol
Type
GND
Supply
SEL1
Digital
SEL2
Digital
ENOSC
Digital
VCCS
Supply
PDOUT
Analog
GND
Supply
VREF
Analog
PDIN
Analog
RTIA
Analog
RTIB
Analog
RTIC
Analog
VCCC
Supply
IOUTC
Analog
VCCB
Supply
IOUTB
Analog
VCCA
Supply
IOUTA
Analog
GND
Supply
RF
Analog
RSA
Analog
RSB
Analog
RSC
Analog
IR
Analog
GND
Supply
Function
Ground, power supply
Logic pin 1 to select IOUT/ENABLE IC
Logic pin 2 to select IOUT/ENABLE IC
Digital control of RF oscillator
+5V power supply for internal circuit
IV amplifier output
Ground, power supply
Reference voltage input
Photo-diode input
External resistor defining transimpedance IOUTA
External resistor defining transimpedance IOUTB
External resistor defining transimpedance IOUTC
+5V to +9V power supply for IOUTC
Output current source C for laser diode
+5V to +9V power supply for IOUTB
Output current source B for laser diode
+5V to +9V power supply for IOUTA
Output current source A for laser diode
Ground, power supply
External resistor to GND; sets frequency of oscillator
External resistor to GND; sets swing of oscillator A
External resistor to GND; sets swing of oscillator B
External resistor to GND; sets swing of oscillator C
Input current bias; ∼500Ω to ground
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4923CS–DVD–02/08