ADL5336-EVALZ AD [Analog Devices], ADL5336-EVALZ Datasheet - Page 29

• Manufacturer Part Number: ADL5336-EVALZ
• Description: Cascadable IF VGAs
• Manufacturer: AD [Analog Devices]

Data Sheet
Components
U2, U3, U4, P1
C35, C36, C40, C41, C42,
C44, C46
C37, C45, C38, C39, C48,
C49, R59, R60, R61, R62,
R64, CR2
C47, C50, C52, R65, R69,
R70, CR1
Y1, C51, C54
EVALUATION BOARD CONTROL SOFTWARE
The
port on a PC. The parallel port is programmed via the
evaluation software. This software controls the following:
•
•
•
For information about the register map, see Table 5, Table 6,
Table 7, and Table 8. For information about SPI port timing and
control, see Figure 2 and Figure 3.
After the software is downloaded and installed, start the basic user
interface to program the maximum gains, setpoints, and the input
of VGA2, see Figure 74.
To program the setpoints of each VGA, click on the respective pull-
down menu of the desired VGA under RMS Out (mVrms/dBV),
select the desired setpoint, and click Write Bits.
To program the maximum gain of each VGA, click on the respective
pull-down menu of the desired VGA under the VGA 1 Max
Gain (dB)/VGA 2 Max Gain (dB), select the desired maximum
gain, and click Write Bits.
When the user clicks Write Bits, a write operation executes,
immediately followed by a read operation. The updated
information is displayed in the VGA1 Current State and VGA2
Current State fields. The gain displayed does not represent the
analog VGA gain, only the digital maximum gain.
ADL5336
The setpoints of VGA1 and VGA2
The maximum gains of VGA1 and VGA2
The input control switch of VGA2
evaluation board is controlled through the parallel
Function
Cypress microcontroller, EEPROM and LDO
3.3 V supply decoupling; several capacitors are used for
decoupling on the 3.3 V supply
Cypress and EEPROM components
LDO components
Crystal oscillator and components. 24 MHz crystal oscillator
ADL5336
Rev. B | Page 29 of 32
On VGA2, the user can switch to either Input A or Input B by
selecting the slider switch, VGA 2 Switch.
Because the speed of the parallel port varies from PC to PC, the
Clock Stretch function can be used to change the effective frequency
of the CLK line. The CLK line has a scalar range from 1 to 10;
10 is the fastest speed, and 1 is the slowest.
Figure 74.
ADL5336
Default Conditions
U2 = MICROCHIP MICRO24LC64
U3 = Analog Devices, Inc., ADP3334ACPZ
U4 = Cypress Semiconductor
CY7C68013A-56LTXC
P1 = Mini USB Connector
C35, C36, C40, C41, C42, C44, C46 =
0.1 µF (0402)
C38, C48 = 10 pF (0402)
C37, C39, C45, C49 = 0.1 µF (0402)
R59, R60, R61 = 2 kΩ (0402)
R62, R64 = 100 kΩ (0402)
CR2 = ROHM SML-21OMTT86
C47, C52 = 1 µF (0402)
C50 = 1000 pF (0402)
R65 = 2 kΩ (0402)
R69 = 78.7 kΩ (0402)
R70 = 140 kΩ (0402)
CR1 = ROHM SML-21OMTT86
Y1 = NDK NX3225SA-24MHz
C51, C54 = 22 pF (0402)
Software Screen Capture
ADL5336