參數(shù)資料
型號: AD9772AAST
廠商: ANALOG DEVICES INC
元件分類: DAC
英文描述: 14-Bit, 160 MSPS TxDAC+ with 2x Interpolation Filter
中文描述: PARALLEL, WORD INPUT LOADING, 0.011 us SETTLING TIME, 14-BIT DAC, PQFP48
封裝: MS-026BBC, LQFP-48
文件頁數(shù): 5/32頁
文件大?。?/td> 596K
代理商: AD9772AAST
REV. A
–5–
AD9772A
(T
MIN
to T
MAX
, AVDD = 3.3 V, CLKVDD = 3.3 V, PLLVDD = 0 V, DVDD = 3.3 V, I
OUTFS
= 20 mA,
differential transformer coupled output, 50 doubly terminated, unless otherwise noted.)
DIGITAL FILTER SPECIFICATIONS
Parameter
Min
Typ
Max
Unit
MAXIMUM INPUT DATA RATE (f
DATA
)
DIGITAL FILTER CHARACTERISTICS
Passband Width
1
: 0.005 dB
Passband Width: 0.01 dB
Passband Width: 0.1 dB
Passband Width:
3 dB
150
MSPS
0.401
0.404
0.422
0.479
f
OUT
/f
DATA
f
OUT
/f
DATA
f
OUT
/f
DATA
f
OUT
/f
DATA
LINEAR PHASE (FIR IMPLEMENTATION)
STOPBAND REJECTION
0.606 f
CLOCK
to 1.394 f
CLOCK
GROUP DELAY
2
73
dB
21
Input Clocks
IMPULSE RESPONSE DURATION
40 dB
60 dB
36
42
Input Clocks
Input Clocks
NOTES
1
Excludes sin(x)/x characteristic of DAC.
2
Defined as the number of data clock cycles between impulse input and peak of output response.
Specifications subject to change without notice.
FREQUENCY
DC TO
f
DATA
0
140
0
1
0.1
O
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
20
40
60
80
100
120
Figure 2a. FIR Filter Frequency Response—Baseband Mode
TIME
Samples
1
0.4
0
5
N
10
15
20
25
30
35
40
45
0.8
0.6
0.4
0.2
0
0.2
Figure 2b. FIR Filter Impulse Response—Baseband Mode
Table I. Integer Filter Coefficients for Interpolation Filter
(43-Tap Half-Band FIR Filter)
Lower
Coefficient
Upper
Coefficient
Integer
Value
H(1)
H(2)
H(3)
H(4)
H(5)
H(6)
H(7)
H(8)
H(9)
H(10)
H(11)
H(12)
H(13)
H(14)
H(15)
H(16)
H(17)
H(18)
H(19)
H(20)
H(21)
H(22)
H(43)
H(42)
H(41)
H(40)
H(39)
H(38)
H(37)
H(36)
H(35)
H(34)
H(33)
H(32)
H(31)
H(30)
H(29)
H(28)
H(27)
H(26)
H(25)
H(24)
H(23)
10
0
31
0
69
0
138
0
248
0
419
0
678
0
1083
0
1776
0
3282
0
10364
16384
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