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參數(shù)資料
| 型號： | AD9772AST |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | DAC |
| 英文描述： | 14-Bit, 150 MSPS TxDAC⑩ with 2x Interpolation Filter |
| 中文描述： | PARALLEL, WORD INPUT LOADING, 0.011 us SETTLING TIME, 14-BIT DAC, PQFP48 |
| 封裝： | PLASTIC, LQFP-48 |
| 文件頁數(shù)： | 5/30頁 |
| 文件大?。?/td> | 340K |
| 代理商： | AD9772AST |
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REV. 0
–5–
AD9772
DIGITAL FILTER SPECIFICATIONS
(T
MIN
to T
MAX
, AVDD = +3 V, CLKVDD = +3 V, PLLVDD = 0 V, DVDD = +3 V,
I
OUTFS
= 20 mA, Differential Transformer Coupled Output, 50
V
Doubly Terminated, unless otherwise noted)
Parameter
Min
Typ
Max
Units
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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| AD9773BSVRL | 制造商:Analog Devices 功能描述:DAC 2-CH R-2R 12-bit 80-Pin TQFP EP T/R |
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