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參數(shù)資料
| 型號： | ADSP-2171KST-133 |
| 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： | 24-BIT, 16.67 MHz, OTHER DSP, PQFP128 |
| 封裝： | PLASTIC, TQFP-128 |
| 文件頁數(shù)： | 43/52頁 |
| 文件大?。?/td> | 664K |
| 代理商： | ADSP-2171KST-133 |
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ADSP-2171/ADSP-2172/ADSP-2173
REV. A
–43–
ADSP-2173
E NVIRONME NT AL CONDIT IONS
Ambient T emperature Rating:
T
AMB
= T
CASE
– (PD
×
θ
C A
)
T
CASE
= Case T emperature in
°
C
PD = Power Dissipation in W
θ
C A
= T hermal Resistance (Case-to-Ambient)
θ
JA
= T hermal Resistance (Junction-to-Ambient)
θ
JC
= T hermal Resistance (Junction-to-Case)
Package
θ
JA
θ
JC
θ
CA
T QFP
PQFP
50
°
C/W
41
°
C/W
2
°
C/W
10
°
C/W
48
°
C/W
31
°
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
DD
2
×
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
= 3.3 V and t
CK
= 50 ns.
Total Power Dissipation
=
P
INT
+
(C
×
V
DD2
×
f
)
P
INT
= internal power dissipation from Power vs. Frequency
graph (Figure 18).
(
C
×
V
DD2
×
f
) is calculated for each output:
# of
Pins
×
C
×
V
DD2
×
f
Address,
DMS
Data Output,
WR
RD
CLK OUT
8
9
1
1
×
10 pF
×
10 pF
×
10 pF
×
10 pF
×
3.3
2
V
×
3.3
2
V
×
3.3
2
V
×
3.3
2
V
×
20 MHz
×
10 MHz
×
10 MHz
×
20 MHz
=
=
=
=
17.4 mW
9.8 mW
1.1 mW
2.2 mW
30.5 mW
T otal power dissipation for this example is P
INT
+ 30.5 mW.
45
35
12
40
60
50
55
65
70
75
85
80
90
19
20
18
17
16
15
1
/
t
CK
– MHz
14
13
POWER, INTERNAL
1
P
I
)
71 mW
57 mW
89 mW
55 mW
32 mW
44 mW
11
9
12
10
14
12
13
15
16
17
19
18
20
19
20
18
17
16
15
1
/
t
CK
– MHz
14
13
P
I
)
POWER, IDLE
1, 2
16.2 mW
12.7 mW
20.5 mW
15.5 mW
8.5 mW
11.8 mW
VALID FOR ALL TEMPERATURE GRADES.
1
POWER REFLECTS DEVICE OPERATING WITH NO OUTPUT LOADS.
2
IDLE REFERS TO ADSP-2173 STATE OF OPERATION DURING
EXECUTION OF IDLE INSTRUCTION. DEASSERTED PINS ARE
DRIVEN TO EITHER V
OR GND. POWER REFLECTS DEVICE
OPERATING WITH CLKOUT DISABLED.
3
TYPICAL POWER DISSIPATION AT 3.3V V
DURING EXECUTION
OF IDLE n INSTRUCTION (CLOCK FREQUENCY REDUCTION).
POWER REFLECTS DEVICE OPERATING WITH CLKOUT DISABLED.
POWER, IDLE n MODES
3
7
5
12
6
10
8
9
11
12
13
15
14
16
19
20
18
17
16
15
1
/
t
CK
– MHz
14
13
IDLE;
IDLE (16)
IDLE (128)
P
I
)
7.8 mW
7.2 mW
16.2 mW
11.8 mW
6.2 mW
6.8 mW
Figure 34. Power vs. Frequency
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ADSP-2171BST-104 | DSP Microcomputer |
| ADSP-2171BST-133 | DSP Microcomputer |
| ADSP-2173BS-80 | DSP Microcomputer |
| ADSP-2171 | DSP Microcomputer(DSP 微計(jì)算機(jī)) |
| ADSP-2172 | DSP Microcomputer(DSP 微計(jì)算機(jī)) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADSP-2172 | 制造商:AD 制造商全稱:Analog Devices 功能描述:DSP Microcomputer |
| ADSP-2173 | 制造商:AD 制造商全稱:Analog Devices 功能描述:DSP Microcomputer |
| ADSP-2173BS-80 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| ADSP-2173BST-80 | 制造商:Analog Devices 功能描述:DSP Fixed-Point 16-Bit 20MHz 20MIPS 128-Pin TQFP 制造商:Rochester Electronics LLC 功能描述:16BIT FXD PT PROC 3.3V - Bulk |
| ADSP-2176-760040 | 制造商:Analog Devices 功能描述: |
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