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ATR0809 Datasheet(PDF) 4 Page - ATMEL Corporation

Part No. ATR0809
Description  FOUR CHANNEL LASER DRIVER WITH RF OSCILLATOR AND TWO OUTPUTS
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Maker  ATMEL [ATMEL Corporation]
Homepage  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATR0809 Datasheet(HTML) 4 Page - ATMEL Corporation

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4
ATR0809
4792BS?DVD?05/04
Pin Configuration QFN20
Figure 3. Pinning QFN20
I4
RFA
RFB
NER
NE2
20 19 18 17 16
6 7 8 9 10
1
2
3
4
5
15
14
13
12
11
IOUTA
GND
RSA
RSB
IOUTB
Pin Description
Pin
Symbol
Type
Function
1
I4
Analog
Input current, bias voltage approximately GND
2
RFA
Analog
External resistor to GND sets frequency of oscillator A
3
RFB
Analog
External resistor to GND sets frequency of oscillator B
4
NER
Digital
Digital control of channel 1 (read, active low)
5
NE2
Digital
Digital control of channel 2 (active low)
6
NE3
Digital
Digital control of channel 3 (active low)
7
NE4
Digital
Digital control of channel 4 (active low)
8
ENOSC
Digital
Enables RF oscillator (active high)
9
VCC
Supply
5 V power supply
10
SELA
Digital
High: selects IOUTA, RSA, RFA
Low: selects IOUTB, RSB, RFB
11
IOUTB
Analog
Output current source B for laser diode
12
RSB
Analog
External resistor to GND sets swing of oscillator B
13
RSA
Analog
External resistor to GND sets swing of oscillator A
14
GND
Supply
Ground
15
IOUTA
Analog
Output current source A for laser diode
16
ENABLE
Digital
Enables output current (active high)
17
VCC
Supply
5 V power supply
18
IR
Analog
Input current, bias voltage approximately GND
19
I2
Analog
Input current, bias voltage approximately GND
20
I3
Analog
Input current, bias voltage approximately GND


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