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參數(shù)資料
| 型號： | ADSP-21364SBBCZENG |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 數(shù)字信號處理 |
| 英文描述： | SHARC Processor |
| 中文描述： | 16-BIT, 55.55 MHz, OTHER DSP, PBGA136 |
| 封裝： | LEAD FREE, MO-205AE, MBGA-136 |
| 文件頁數(shù)： | 43/52頁 |
| 文件大?。?/td> | 853K |
| 代理商： | ADSP-21364SBBCZENG |
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ADSP-21364
Preliminary Technical Data
Rev. PrB
|
Page 43 of 52
|
September 2004
OUTPUT DRIVE CURRENTS
Figure 36
shows typical I-V characteristics for the output driv-
ers of the ADSP-21364. The curves represent the current drive
capability of the output drivers as a function of output voltage.
TEST CONDITIONS
The ac signal specifications (timing parameters) appear
Table 12 on Page 20
through
Table 38 on Page 42
. These include
output disable time, output enable time, and capacitive loading.
The timing specifications for the SHARC apply for the voltage
reference levels in
Figure 37
.
Timing is measured on signals when they cross the 1.5 V level as
described in
Figure 38 on Page 43
. All delays (in nanoseconds)
are measured between the point that the first signal reaches
1.5 V and the point that the second signal reaches 1.5 V.
CAPACITIVE LOADING
Output delays and holds are based on standard capacitive loads:
30 pF on all pins (see
Figure 37
).
Figure 41
shows graphically
how output delays and holds vary with load capacitance. The
graphs of
Figure 39
,
Figure 40
, and
Figure 41
may not be linear
outside the ranges shown for Typical Output Delay vs. Load
Capacitance and Typical Output Rise Time (20%-80%, V=Min)
vs. Load Capacitance.
Figure 36. ADSP-21364 Typical Drive
Figure 37. Equivalent Device Loading for AC Measurements
(Includes All Fixtures)
Figure 38. Voltage Reference Levels for AC Measurements
SWEEP(VDDEXT) VOLTAGE (V)
-20
0
3.5
0.5
1
1.5
2
2.5
3
0
-40
-30
20
40
-10
S
VOL
3.11V, 125° C
3.3V, 25° C
3.47V, -45° C
VOH
30
10
3.11V, 125° C
3.3V, 25° C
3.47V, -45° C
1.5V
30pF
TO
OUTPUT
PIN
50
INPUT
OR
OUTPUT
1.5V
1.5V
Figure 39. Typical Output Rise/Fall Time (20%-80%,
V
DDEXT
= Max)
Figure 40. Typical Output Fall Time (20%-80%,
V
DDEXT
= Min)
LOAD CAPACITANCE (pF)
8
0
0
100
250
12
4
2
10
6
R
200
150
50
FALL
y = 0.0467x + 1.6323
y = 0.045x + 1.524
RISE
LOAD CAPACITANCE (pF)
12
0
50
100
150
200
250
10
8
6
4
R
2
0
RISE
FALL
y = 0.049x + 1.5105
y = 0.0482x + 1.4604
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ADSP-21364SBSQ-ENG | SHARC Processor |
| ADSP-21364SBSQZENG | SHARC Processor |
| ADSP-21364SCSQ-ENG | SHARC Processor |
| ADSP-21364SCSQZENG | SHARC Processor |
| ADSP-21364SKBC-ENG | SHARC Processor |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADSP-21364SBSQ-ENG | 制造商:AD 制造商全稱:Analog Devices 功能描述:SHARC Processor |
| ADSP-21364SBSQZENG | 制造商:AD 制造商全稱:Analog Devices 功能描述:SHARC Processor |
| ADSP-21364SCSQ-ENG | 制造商:AD 制造商全稱:Analog Devices 功能描述:SHARC Processor |
| ADSP-21364SCSQZENG | 制造商:AD 制造商全稱:Analog Devices 功能描述:SHARC Processor |
| ADSP-21364SKBC-ENG | 制造商:Analog Devices 功能描述: |
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