atr0809 ATMEL Corporation, atr0809 Datasheet - Page 4

• Manufacturer Part Number: atr0809
• Description: Four Channel Laser Driver With Rf Oscillator And Two Outputs - Atmel Corporation
• Manufacturer: ATMEL Corporation

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