atr0849 ATMEL Corporation, atr0849 Datasheet - Page 3

• Manufacturer Part Number: atr0849
• Description: Atr0849 4-channel Lvds Laser Driver For Dual-layer Application
• Manufacturer: ATMEL Corporation

2. Pin Configuration
Figure 2-1.
Table 2-1.
4851BS–DVD–06/05
Paddle
Pin
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
1
2
3
4
5
6
7
8
9
Pinning QFN24
Pin Description
ENABLE
Symbol
ENOSC
IOUTB
IOUTA
SELA
GND
GND
NER
VCC
VCC
VCC
RFB
RSA
RSB
RFA
NE2
NE3
NE4
E2
E3
E4
IR
I2
I3
I4
Analog
Analog
Supply
Supply
Analog
Analog
Supply
Analog
Analog
Supply
Analog
Analog
Analog
Analog
Supply
Digital
Digital
Digital
Digital
Digital
Digital
Digital
Digital
Digital
Digital
Type
Function
External resistor to GND sets frequency of oscillator B
External resistor to GND sets frequency of oscillator A
Digital control of read channel (channel 1), active low
Digital control of channel 2
Digital control of channel 2
Digital control of channel 3
Digital control of channel 3
Digital control of channel 4
Digital control of channel 4
Digital control of RF oscillator
+5V power supply
+5V power supply
Enables output current, active high
Output current source B for laser diode
External resistor to GND sets swing of oscillator A
Ground, power supply
External resistor to GND sets swing of oscillator B
Output current source A for laser diode
High: selects IOUTA, RSA, RFA
Low: selects IOUTB, RSB, RFB
+5V power supply
Input current, bias voltage approximately GND
Input current, bias voltage approximately GND
Input current, bias voltage approximately GND
Input current, bias voltage approximately GND
Ground, negative power supply
NER
RFB
RFA
NE2
E2
E3
1
2
3
4
5
6
24 23 22 21 20 19
7
8 9 10 11 12
18
17
16
15
14
13
IOUTA
RSB
GND
RSA
IOUTB
ENABLE
ATR0849
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