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參數資料
| 型號： | PE43503MLI-Z |
| 廠商： | Peregrine Semiconductor |
| 文件頁數： | 8/11頁 |
| 文件大小： | 983K |
| 描述： | IC RF DSA 5BIT 50 OHM 24QFN |
| 標準包裝： | 3,000 |
| 系列： | UltraCMOS™, HaRP™ |
| 衰減值： | 0dB ~ 31dB |
| 容差： | ±0.3dB |
| 頻率范圍： | 9kHz ~ 6GHz |
| 阻抗： | 50 歐姆 |
| 封裝/外殼： | 24-VFQFN 裸露焊盤 |
| 其它名稱： | PE43503 |
Product Specification
PE43503
Page 8 of 11
?008-2009 Peregrine Semiconductor Corp. All rights reserved.
Document No. 70-0252-05 UltraCMOS" RFIC Solutions
Evaluation Kit
The Digital Attenuator Evaluation Kit board was
designed to ease customer evaluation of the
PE43503 Digital Step Attenuator.
Direct-Parallel Programming Procedure
For automated direct-parallel programming,
connect the test harness provided with the EVK
from the parallel port of the PC to the J1 & Serial
header pin and set the D0-D6 SP3T switches to
the MIDDLE toggle position. Position the
Parallel/Serial (P/S) select switch to the Parallel
(or left) position. The evaluation software is
written to operate the DSA in either Parallel or
Serial-Addressable Mode. Ensure that the
software is set to program in Direct-Parallel mode.
Using the software, enable or disable each setting
to the desired attenuation state. The software
automatically programs the DSA each time an
attenuation state is enabled or disabled.
For manual direct-parallel programming,
disconnect the test harness provided with the EVK
from the J1 and Serial header pins. Position the
Parallel/Serial (P/S) select switch to the Parallel
(or left) position. The LE pin on the Serial header
must be tied to V
DD
. Switches D0-D6 are SP3T
switches which enable the user to manually
program the parallel bits. When any input D0-D6
is toggled UP, logic high is presented to the
parallel input. When toggled DOWN, logic low is
presented to the parallel input. Setting D0-D6 to
the MIDDLE toggle position presents an OPEN,
which forces an on-chip logic low. Table 9 depicts
the parallel programming truth table and Fig. 16
illustrates the parallel programming timing
diagram.
Latched-Parallel Programming Procedure
For automated latched-parallel programming, the
procedure is identical to the direct-parallel
method. The user only must ensure that Latched-
Parallel is selected in the software.
For manual latched-parallel programming, the
procedure is identical to direct-parallel except now
the LE pin on the Serial header must be logic low
Figure 17. Evaluation Board Layout
Peregrine Specification 101-0310
as the parallel bits are applied. The user must
then pulse LE from 0V to V
DD
and back to 0V to
latch the programming word into the DSA. LE
must be logic low prior to programming the next
word.
Serial Programming Procedure
Position the Parallel/Serial (P/S) select switch to
the Serial (or right) position. The evaluation
software is written to operate the DSA in either
Parallel or Serial Mode. Ensure that the software
is set to program in Serial mode. Using the
software, enable or disable each setting to the
desired attenuation state. The software
automatically programs the DSA each time an
attenuation state is enabled or disabled.
Note: Reference Figure 18 for Evaluation Board Schematic
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