ATR0839 Datasheet, PDF (3/6 Pages) ATMEL Corporation – 4-Channel LVDS Laser Driver for Dual-layer Application

2. Pin Configuration
Figure 2-1. Pinning QFN24
RFB
RFA
NER
E2
NE2
E3
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
RSB
GND
RSA
IOUTB
ENABLE
ATR0839
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
RFB
Analog
RFA
Analog
NER
Digital
E2
Digital
NE2
Digital
E3
Digital
NE3
Digital
E4
Digital
NE4
Digital
ENOSC
Digital
NENOSC
Digital
VCC
Supply
ENABLE
Digital
IOUTB
Analog
RSA
Analog
GND
Supply
RSB
Analog
IOUTA
Analog
SELA
Digital
VCC
IR
I2
I3
I4
GND
Supply
Analog
Analog
Analog
Analog
Supply
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 (high active)
Digital control of RF oscillator (low active)
+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
3
4852BS–DVD–09/05