ATR0881 Datasheet, PDF (3/6 Pages) ATMEL Corporation – 3-output Laser Driver with 5 Channels and Serial Interface

2. Pin Configuration
Figure 2-1. Pinning QFN24
ATR0881 [Preliminary]
24 23 22 21 20 19
NE5 1
NE4 2
E3 3
NE3 4
E2 5
NE2 6
Exposed
Upside
Paddle
18 GNDC
17 IOUTB
16 VDDAB
15 VDDAB
14 IOUTA
13 GND
7 8 9 10 11 12
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
Corners
Pin Description
Symbol
Type
NE5
Digital in
NE4
Digital in
E3
Digital in
NE3
Digital in
E2
Digital in
NE2
Digital in
ENO
Digital in
NENO
Digital in
NEX
Digital in
VDD
Supply
IW
Analog in
IR
Analog in
GND
Supply
IOUTA
Analog out
VDDAB
Supply
IOUTB
Analog out
GNDC
Supply
IOUTC
Analog out
RREF
Analog in
VDD
Supply
SENB
Digital in
SDATA Digital in/out
SCLK
Digital in
Function
Enable channel 5 (inverting, single ended) or enable channel 4 (non-inverting, LVDS)
Enable channel 4 (inverting, LVDS, or single ended)
Enable channel 3 (non-inverting, LVDS)
Enable channel 3 (inverting, LVDS, or single ended)
Enable channel 2 (non-inverting, LVDS)
Enable channel 2 (inverting, LVDS, or single ended)
Enable HFM (non-inverting, LVDS, or single ended)
Enable HFM (inverting, LVDS)
Multipurpose enable input (inverting, all channels, channel 1, write channels)
Power supply
Reference current input for write channels
Reference current input for read channels
GND
Laser diode anode connection
Power supply for outputs IOUTA and IOUTB
Laser diode anode connection
GND for output IOUTC
Laser diode cathode connection
Reference current input for HFM and overcurrent detector
Power supply
Serial enable
Serial data input and output
Serial clock
Paddle – at least one corner has to be connected to GND
3
9105BS–DVD–03/08