EVAL-AD9835EB Analog Devices Inc, EVAL-AD9835EB Datasheet - Page 3

• Manufacturer Part Number: EVAL-AD9835EB
• Description: BOARD EVAL FOR AD9835
• Manufacturer: Analog Devices Inc

Specifications of EVAL-AD9835EB

• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

EVALUATION BOARD INTERFACING
Interfacing to the evaluation board is via a 36-way
centronics female connector, J1.
connector is shown in Figure 2 and its pin designations are
given in Table 2.
36-Way Connector Pin Description
D G N D
SDATA
SCLK
FSYNC
PIN NO.
2
3
4
19-30
Note: The remainder of the pins on the 36-way connector are
no connects.
18
36
Table 2. 36-Way Connector Pin Funtions
Digital Ground.
Serial Data. Data applied to this pin is buffered
Serial Clock. The signal on this pin is buffered
The signal on this pin is buffered before being
the digital ground plane on the evaluation
board.
before being applied to the AD9835. The serial
data applied to the SDATA pin is written to the
serial register of the device. The data is then
transferred to the destination register, the control
register or the FSELECT/PSEL registers, the
control bits being used to identify the destination
for the data information. The AD9835 accepts
CMOS logic levels.
before being applied to the SCLK pin of the
AD9835.
serial clock when data/control information is
being written to the device.
can be continuous or, it can idle high or low
between write operations.
applied to the FSYNC pin of the AD9835. The
FSYNC signal frames the 16-bit word being
loaded into the AD9835, the signal going low
for 16 SCLK cycles.
SCLK
SDATA
FSYNC
D G N D
MNEMONIC
The AD9835 requires an external
These lines are connected to
The pinout for the J1
The serial clock
19
1
- 3 -
SOCKETS
There are six sockets relevant to the operation of the AD9835
on this evaluation board.
outlined in Table 3.
Socket
REFIN
I O U T
MCLK
F S E L
PSEL0
PSEL1
CONNECTORS
There are three connectors on the AD9835 evaluation board
as outlined in Table 4.
Connector
J 1
J 2
J 3
SWITCHES
There is one switch on the AD9835 evaluation board. This
switch is a double throw, end stackable switch. This switch
can be used to control the FSELECT, PSEL0 and PSEL1
inputs.
Function
Sub-Miniature BNC Socket for REFIN.
Sub-Miniature BNC Socket for IOUT.
Sub-Miniature BNC Socket for the MCLK
input.
Sub-Miniature BNC Socket for FSELECT.
Sub-Miniature BNC Socket for PSEL0.
Sub-Miniature BNC Socket for PSEL1.
Power Supply to the Evaluation Board is
provided via this Connector.
Power Supply to the Evaluation Board is
provided via this Connector.
Functions
36-Way Centronics Connector.
PCB Mounting Terminal Block.
PCB Mounting Terminal Block.
Table 4.
Table 3. Socket Functions
Connector Functions
The function of these sockets is
EVAL-AD9835EB
The Analog
The Digital
Rev. A