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ATR0841 Datasheet(PDF) 3 Page - ATMEL Corporation

Part No. ATR0841
Description  4-channel Laser Driver with 2 Outputs, 3 LVDS Inputs and Internal Termination
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Maker  ATMEL [ATMEL Corporation]
Homepage  http://www.atmel.com
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ATR0841 Datasheet(HTML) 3 Page - ATMEL Corporation

   
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ATR0841
4818AS–DVD–09/04
Pin Configuration
Figure 2. Pinning QFN24
RFB
RFA
E2
NE2
E3
NE3
IOUTA
GND
RSA
RSB
IOUTB
SELA
24 23 22 21 20 19
7 8
9 10 11 12
18
17
16
15
14
13
1
2
3
4
5
6
Pin Description
Pin
Symbol
Type
Function
1
RFB
Analog
External resistor to ground sets frequency of oscillator B
2
RFA
Analog
External resistor to ground sets frequency of oscillator A
3
E2
Digital
+LVDS control of channel 2
4
NE2
Digital
-LVDS control of channel 2
5
E3
Digital
+LVDS control of channel 3
6
NE3
Digital
-LVDS control of channel 3
7
E4
Digital
+LVDS control of channel 4
8
NE4
Digital
-LVDS control of channel 4
9
ENOSC
Digital
Enables RF oscillator (high active)
10
ENABLE
Digital
Enables output current (high active)
11
VCC
Supply
+5 V power supply
12
VCC
Supply
+5 V power supply
13
SELA
Digital
High: selects IOUTA, RSA, RFA
Low: selects IOUTB, RSB, RFB
14
IOUTB
Analog
Output current source B for laser diode
15
RSB
Analog
External resistor to ground sets swing of oscillator B
16
RSA
Analog
External resistor to ground sets swing of oscillator A
17
GND
Supply
Ground
18
IOUTA
Analog
Output current source A for laser diode
19
VCC
Supply
+5 V power supply
20
VCC
Supply
+5 V power supply
21
IR
Analog
Reference current input read channel (input impedance 500
Ω to ground)
22
I2
Analog
Reference current input channel 2 (input impedance 500
Ω to ground
23
I3
Analog
Reference current input channel 3 (input impedance 500
Ω to ground)
24
I4
Analog
Reference current input channel 4 (input impedance 500
Ω to ground)
Paddle
GND
Supply
Ground


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