AD9661AKR Analog Devices Inc, AD9661AKR Datasheet - Page 11

• Manufacturer Part Number: AD9661AKR
• Description: IC LASER DIODE DRIVER 28-SOIC
• Manufacturer: Analog Devices Inc
• Type: Laser Diode Driverr

Specifications of AD9661AKR

• Rohs Status: RoHS non-compliant
• Number Of Channels: 1
• Voltage - Supply: 4.75 V ~ 5.25 V
• Current - Supply: 75mA
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 28-SOIC (0.300", 7.50mm Width)
• Mounting Type: Surface Mount

REV. 0
AD9661A EVALUATION BOARD
The AD9661A Evaluation Board is comprised of two printed
circuit boards. The Laser Diode Driver (LDD) Resource Board
is both a digital pattern generator and an analog reference gen-
erator (see LDD Resource Board Block Diagram.) The board is
controlled by an IBM compatible personal computer through a
standard printer cable. The resource board interfaces to the
AD9661A DUT board, which contains the AD9661A, a level
shift circuit for the analog input, and a socket for an N type
IBM-COMPATIBLE
WITH WINDOWS
PRINTER PORT
STANDARD PARALLEL
PARALLEL
PRINTER CABLE
PC
CENTRONICS
CONNECTOR
P1
LASER DIODE DRIVER RESOURCE BOARD
8
8
20-PIN HEADER
FOR ANALOG
CONTROLS
20
INPUT SMB CONNECTORS
FOR DIGITAL CONTROLS
Figure 10. LDD Resource Board Block Diagram
ANALOG REFERENCE
DIGITAL PATTERN GENERATOR
5
OSCILLATOR
READBACK
Figure 11. Evaluation Board Block Diagram
DAC 1
DAC 2
CLOCK
40MHz
LATCH
X1
X1
LEVEL SHIFT
OPTIONAL
CONTROLLER
CIRCUIT
RESOURCE
0–2.55V
0–2.55V
ADDRESS
COUNTER
MEMORY
32K x 16
AND
–11–
AD9661A
laser diode. A dummy load circuit for the laser diode is in-
cluded for evaluation. Power for all the boards is provided
through the banana jacks on the AD9661A DUT board.
These should be connected to a linear, +5 V power supply.
Schematics for the LDD Resource Board, AD9661A DUT,
and Dummy Load are included, along with a bill of mate-
rial and layout information. Please contact Applications for
additional information.
MODULATOR
(AD9560)
OUTPUT
BUFFER
PULSE
WIDTH
EVALUATION BOARD
DUMMY LOAD CIRCUIT/
LASER DIODE SOCKET
AD9661A
CONNECTORS
OUTPUT
SMB
J8
J6
J2
J5
J7
J4
HEADER
J3
20-PIN
12
11
PULSE1 (JPUL)
CAL (JCALB)
DISABLE (JDIS)
PULSE2 (JPULB)
UNUSED
TRIGGER
EXTERNAL LEVEL SHIFT CIRCUIT
1–10
17–20
R9
+5V POWER SUPPLY
GROUND
R8
INTERFACE TO
AD9661A
LEVEL SHIFT IN
EVALUATION
AD9661A
BOARD
AD9661A