ADSP-218xN
Rev. A
|
Page 27 of 48
|
August 2006
Figure 22. Power vs. Frequency
2.0
P
O
W
E
R
(P
ID
L
E
n
)
–
m
W
8.5m W
3.8m W
3.4m W
4.3 mW
10 .5mW
POWER, IDLE n MO DE S2
1/
t
CK –MH z
4.0
6.0
8.0
10.0
12.0
0.0
5.0
P
O
W
E
R
(P
ID
L
E
)
–
m
W
POW ER, IDLE1, 2, 4
1/
t
CK –MH z
6.0
7.0
8.0
9.0
10 .0
11 .0
1/
t
CK –MH z
60
55
POWER, INTERNAL1, 2, 3
P
O
W
E
R
(P
IN
T
)
–
m
W
20
6 5
7 0
75
80
85
35
40
45
50
55
60
25
30
NOTES
VA LID FOR ALL TEM PERATURE GRADES.
POW ER R EFLECTS DE VI CE OPE RA TING WITH NO OUTPUT
LOADS.
TYP IC AL P OW ER DI SS IPA TION A T 1. 8V OR 1. 9V VDD INT AND
25 °C, EX C EPT WH ER E SPE CI FI ED .
IDD M EASUREM ENT TAKE N WITH ALL INS TRUCTIONS
EXE C UTIN G FRO M I NT ERNAL M EM ORY. 50 % OF TH E
IN STRUCTIO N S ARE M U LT IFUNCTION (TYP ES 1 , 4 , 5 , 1 2, 13,
14 ), 30 % ARE TY PE 2 AND TY PE 6, AND 2 0% ARE ID LE
IN STRUCTIO N S.
ID LE RE FE RS TO S TATE OF OP ERATION DURI NG EX ECUTI ON
OF I DLE IN STRUCTION . DE A SSE RTE D PIN S ARE DRI VEN TO
EI THE R VDD OR GND.
1
2
3
4
42 mW
55 m W
VD D IN
T
= 2.
0V
50 mW
VD D IN
T
= 1.
9 V
38 m W
34 m W
45 m W
V DD IN
T =
1.8 V
30 m W
40 mW
VD D IN
T =
1 .71
V
60
55
65
7 0
75
80
8 5
12. 0
13. 0
14. 0
15. 0
10. 5 m W
13 .5 m W
VD D IN
T
= 2.
0V
12 mW
VD D INT
= 1.
9V
9. 5m W
8.5mW
10 .5 m W
V DD IN T
= 1.8V
7.5mW
9m W
V DD IN T
= 1.71 V
60
5 5
65
70
7 5
80
8 5
4.9 mW
4.2 mW
4.7 mW
5.2 mW
12. 0mW
9.5 mW
V
DD CO R E = 1 . 9 V
V DD COR E = 1 . 8 V
Figure 23. Typical Power-Down Current
Figure 24. Typical Output Rise Time vs. Load Capacitance (at Maximum
Ambient Operating Temperature)
Figure 25. Typical Output Valid Delay or Hold vs. Load Capacitance, CL (at
Maximum Ambient Operating Temperature)
NOTES
1. REFLECTS ADSP-218xN OPERATION IN LOWEST POWER
MODE. (SEE THE "SYSTEM INTERFACE" CHAPTER OF THE
ADSP-218x DSP HARDWARE REFERENCE FOR DETAILS.)
2. CURRENT REFLECTS DEVICE OPERATING WITH NO
INPUT LOADS.
VDD =2.0V
VDD =1.9V
VDD =1.8V
VDD =1.7V
TEMPERATURE – °C
1 0 0 0
100
0
085
25
55
10
C
U
R
E
N
T
(L
O
G
S
C
A
L
E
)
–
A
CL –pF
R
IS
E
T
IM
E
(0
.4
V
–
2
.4
V
)
–
n
s
30
300
0
50
100
150
20 0
250
25
15
10
5
0
20
T= 85 C
VDD =0VTO 2.0V
CL –pF
14
0
V
A
L
ID
O
U
T
P
U
T
D
E
L
A
Y
O
R
H
O
L
D
–
n
s
50
100
150
250
200
12
4
2
–2
10
8
NOMINAL
16
18
6
–4
–6