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參數(shù)資料
| 型號： | ADSP2186 |
| 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(jī) |
| 文件頁數(shù)： | 15/32頁 |
| 文件大?。?/td> | 293K |
| 代理商： | ADSP2186 |
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ADSP-2186
–15–
REV. 0
E NVIRONME NT AL CONDIT IONS
Ambient T emperature Rating:
T
AMB
=
T
CASE
– (PD x
θ
CA
)
T
CASE
=
Case T emperature in
°
C
PD
=
Power Dissipation in W
θ
CA
=
T hermal Resistance (Case-to-Ambient)
θ
JA
=
T hermal Resistance (Junction-to-Ambient)
θ
JC
=
T hermal Resistance (Junction-to-Case)
Package
u
JA
u
JC
u
CA
T QFP
50
°
C/W
2
°
C/W
48
°
C/W
POWE R DISSIPAT ION
T o determine total power dissipation in a specific application,
the following equation should be applied for each output:
C
×
V
DD2
×
f
C
= load capacitance,
f
= output switching frequency.
E xample
In an application where external data memory is used and no
other outputs are active, power dissipation is calculated as follows:
Assumptions
External data memory is accessed every cycle with 50% of the
address pins switching.
External data memory writes occur every other cycle with
50% of the data pins switching.
Each address and data pin has a 10 pF total load at the pin.
T he application operates at V
DD
= 5.0 V and t
CK
= 30 ns.
Total Power Dissipation = P
INT
+ (
C
×
V
DD
2
×
f
)
P
INT
= internal power dissipation from Power vs. Frequency
graph (Figure 8).
(
C
×
V
DD
2
×
f
) is calculated for each output:
# of
Pins
3
C
3
V
DD2
3
f
Address,
DMS
Data Output,
WR
9
RD
CLK OUT
8
×
10 pF
×
5
2
V
×
10 pF
×
5
2
V
×
10 pF
×
5
2
V
×
10 pF
×
5
2
V
×
33.3 MHz = 66.6 mW
×
16.67 MHz = 37.5 mW
×
16.67 MHz = 4.2 mW
×
33.3 MHz =
1
1
8.3 mW
116.6 mW
T otal power dissipation for this example is PINT + 116.6 mW.
VALID FOR ALL TEMPERATURE GRADES.
1
POWER REFLECTS DEVICE OPERATING WITH NO OUTPUT LOADS.
2
IDLE REFERS TO ADSP-2186 STATE OF OPERATION DURING EXECUTION OF IDLE
INSTRUCTION. DEASSERTED PINS ARE DRIVEN TO EITHER V
DD
OR GND.
5
SPECIFICATIONS AT 40MHz ARE PRELIMINARY AT THIS PRINTING.
4
I
MEASUREMENT TAKEN WITH ALL INSTRUCTIONS EXECUTING FROM INTERNAL
MEMORY. 50% OF THE INSTRUCTIONS ARE MULTIFUNCTION (TYPES 1, 4, 5, 12, 13, 14
30% ARE TYPE 2 AND TYPE 6, AND 20% ARE IDLE INSTRUCTIONS.
3
TYPICAL POWER DISSIPATION AT 5.0V V
DD
AND T
A
= 25
°
C EXCEPT WHERE SPECIFIED.
70
20
65
40
35
30
25
60
55
45
50
P
I
n
1/f
CK
– MHz
28
42
30
32
34
36
38
40
56mW
30mW
28mW
32mW
30mW
34mW
32mW
61mW
67mW
IDLE (16)
IDLE (128)
IDLE
85
30
80
55
50
45
40
75
70
60
65
35
P
I
)
1/f
CK
– MHz
42
30
32
34
36
38
40
69mW
76mW
84mW
V
DD
= 5.5V
56mW
61mW
67mW
V
DD
= 5.0V
45mW
49mW
54mW
V
DD
= 4.5V
1/f
CK
– MHz
42
30
32
34
36
38
40
450
200
425
300
275
250
225
400
375
350
325
P
I
)
175
150
330mW
245mW
175mW
275mW
195mW
325mW
235mW
370mW
V
DD
= 5.5V
V
DD
= 5.0V
V
DD
= 4.5V
2186 POWER, INTERNAL
1, 3, 4, 5
POWER, IDLE
1, 2, 3, 5
POWER, IDLE nMODES
3, 5
430mW
Figure 8. Power vs. Frequency
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADSP-2186 | 制造商:AD 制造商全稱:Analog Devices 功能描述:DSP Microcomputer |
| ADSP-2186_01 | 制造商:AD 制造商全稱:Analog Devices 功能描述:DSP Microcomputer |
| ADSP-2186BCA-160 | 制造商:AD 制造商全稱:Analog Devices 功能描述:DSP Microcomputer |
| ADSP-2186BST-115 | 制造商:Analog Devices 功能描述:DSP Fixed-Point 16-Bit 28.8MHz 28.8MIPS 100-Pin LQFP 制造商:Rochester Electronics LLC 功能描述:DSP,5V,28MHZ,16K WORD RAM, 100TQFP - Bulk 制造商:Analog Devices 功能描述:IC MICROCOMPUTER 16-BIT |
| ADSP-2186BST-133 | 制造商:Analog Devices 功能描述:DSP Fixed-Point 16-Bit 33.3MHz 33.3MIPS 100-Pin LQFP 制造商:Rochester Electronics LLC 功能描述:DSP,5V,33MHZ,16K WORD RAM, 100TQFP - Bulk 制造商:Analog Devices 功能描述:IC MICROCOMPUTER 16-BIT |
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