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參數(shù)資料
| 型號： | ADSP-2196 |
| 廠商： | Analog Devices, Inc. |
| 元件分類： | 數(shù)字信號處理 |
| 英文描述： | DSP Microcomputer |
| 中文描述： | DSP微機 |
| 文件頁數(shù)： | 55/68頁 |
| 文件大小： | 897K |
| 代理商： | ADSP-2196 |
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This information applies to a product under development. Its characteristics and specifications are subject to change with-
out notice. Analog Devices assumes no obligation regarding future manufacturing unless otherwise agreed to in writing.
55
REV. PrA
For current information contact Analog Devices at 800/262-5643
ADSP-2196
September 2001
Example System Hold
Time Calculation
To determine the data output
hold time in a particular
system, first calculate t
DECAY
using the equation given in
Figure 31
. Choose –V to be
the difference between the
ADSP-2196’s output voltage
and the input threshold for
the device requiring the hold
time. A typical –V will be
0.4 V. C
L
is the total bus
capacitance (per data line),
and I
L
is the total leakage or
three-state current (per data
line). The hold time will be
t
DECAY
plus the minimum
disable time (i.e., t
DATRWH
for
the write cycle).
Capacitive Loading
Output delays and holds are
based on standard capacitive
loads: 50 pF on all pins (see
Figure 37
). The delay and
hold specifications given
should be derated by a factor
of 1.5 ns/50 pF for loads
other than the nominal value
of 50 pF.
Figure 35
and
Figure 36
show how output
rise time varies with capaci-
tance. These figures also
show graphically how output
delays and holds vary with
load capacitance. (Note that
this graph or derating does
not apply to output disable
delays; see
Output Disable
Time on page 54
.) The
graphs in these figures may
not be linear outside the
ranges shown.
Environmental Conditions
The thermal characteristics
in which the DSP is operating
influence performance.
Thermal Characteristics
The ADSP-2196 comes in a
144-lead LQFP or 144-lead
Ball Grid Array (mini-BGA)
package. The ADSP-2196 is
specified for an ambient tem-
perature (T
AMB
) as calculated
using the formula in
Figure 38
. To ensure that the
T
AMB
data sheet specification
is not exceeded, a heatsink
and/or an air flow source may
be used. A heatsink should be
attached to the ground plane
(as close as possible to the
thermal pathways) with a
thermal adhesive.
Where:
T
AMB
= Ambient tempera-
ture (measured near top
surface of package)
PD = Power dissipation in
W (this value depends
upon the specific applica-
tion; a method for
calculating PD is shown
under Power Dissipation).
θ
CA
= Value from
Table 25
.
θ
JB
= TBD°C/W
There are some important
things to note about these
T
AMB
calculations and the
values in
Table 25
:
This represents thermal
resistance at total power of
TBDW.
For the LQFP package:
θ
JC
= 0.96°C/W
For the mini-BGA
package:
θ
JC
= 8.4°C/W
Figure 33. Equivalent
Device Loading
for AC
Measurements
(Includes All
Fixtures)
:.)(
)';
FiguVoltaReferenLevefAC
MEnable/Disable)
(Except
Output
.)(
.)(
Figure 35. Typical Output Rise Time (10%–90%,
V
DDEXT
=Max) vs. Load Capacitance
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相關PDF資料 |
PDF描述 |
|---|---|
| ADSP-2196MBCA-140X | DSP Microcomputer |
| ADSP-2196MBST-140X | DSP Microcomputer |
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相關代理商/技術參數(shù) |
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| adsp-2196mbca-140 | 制造商:Analog Devices 功能描述: |
| adsp-2196mbst-140 | 制造商:Analog Devices 功能描述:DSP Fixed-Point 16-Bit 140MHz 140MIPS 144-Pin LQFP 制造商:Rochester Electronics LLC 功能描述: |
| ADSP-2196MBST-140Z | 制造商:Analog Devices 功能描述:DSP Fixed-Point 16-Bit 140MHz 140MIPS 144-Pin LQFP |
| ADSP-2196MKST-160 | 制造商:Analog Devices 功能描述:DSP Fixed-Point 16-Bit 160MHz 160MIPS 144-Pin LQFP 制造商:Analog Devices 功能描述:16-Bit DSP 160 MIPs 2.5V 40 Kbytes |
| ADSP-2196MKSTZ-160 | 功能描述:IC DSP CONTROLLER 16BIT 144-LQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - DSP（數(shù)字式信號處理器） 系列:ADSP-21xx 標準包裝:40 系列:TMS320DM64x, DaVinci™ 類型:定點 接口:I²C，McASP，McBSP 時鐘速率:400MHz 非易失內存:外部 芯片上RAM:160kB 電壓 - 輸入/輸出:3.30V 電壓 - 核心:1.20V 工作溫度:0°C ~ 90°C 安裝類型:表面貼裝 封裝/外殼:548-BBGA，F(xiàn)CBGA 供應商設備封裝:548-FCBGA（27x27） 包裝:托盤 配用:TMDSDMK642-0E-ND - DEVELPER KIT W/NTSC CAMERA296-23038-ND - DSP STARTER KIT FOR TMS320C6416296-23059-ND - FLASHBURN PORTING KIT296-23058-ND - EVAL MODULE FOR DM642TMDSDMK642-ND - DEVELOPER KIT W/NTSC CAMERA |
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