4

ATR0807

4723CS–DVD–07/03

Pin Configuration QFN16

Figure 3. Pinning QFN16

I3

RF

NE2

NE3

GND

RSA

RSB

IOUTB

16 15 14 13

5 6 7 8

1

2

3

4

12

11

10

9

Pin Description

Pin

Symbol

Type

Function

1

I3

Analog

Input current, bias voltage approximately GND

2

RF

Analog

External resistor to GND sets frequency of oscillator

3

NE2

Digital

Digital control of channel 2 (low active)

4

NE3

Digital

Digital control of channel 3 (low active)

5

ENABLE

Digital

Enables output current (high active)

6

ENOSC

Digital

Enables RF oscillator (high active)

7

VCC2

Supply

+5 V power supply for IOUT

8

SELA

Digital

High: selects IOUTA, RSA

Low: selects IOUTB, RSB

9

IOUTB

Analog

Output current source B for laser diode

10

RSB

Analog

External resistor to GND sets swing of oscillator B

11

RSA

Analog

External resistor to GND sets swing of oscillator A

12

GND

Supply

Ground

13

IOUTA

Analog

Output current source A for laser diode

14

VCC1

Supply

+5 V power supply for circuit

15

IR

Analog

Input current, bias voltage approximately GND

16

I2

Analog

Input current, bias voltage approximately GND

Paddle

GND

Supply

Ground