參數(shù)資料
型號: AD976CN
廠商: ANALOG DEVICES INC
元件分類: ADC
英文描述: 16-Bit, 100 kSPS/200 kSPS BiCMOS A/D Converters
中文描述: 1-CH 16-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDIP28
封裝: 0.300 INCH, SKINNY, PLASTIC, DIP-28
文件頁數(shù): 4/23頁
文件大小: 577K
代理商: AD976CN
AD9761
–4–
REV. B
DIGITAL FILTER SPECIFICATIONS
Parameter
Min
Typ
Max
Unit
MAXIMUM INPUT CLOCK RATE (f
CLOCK
)
DIGITAL FILTER CHARACTERISTICS
Passband Width
1
: 0.005 dB
Passband Width: 0.01 dB
Passband Width: 0.1 dB
Passband Width: –3 dB
Linear Phase (FIR Implementation)
Stopband Rejection: 0.3 f
CLOCK
to 0.7 f
CLOCK
Group Delay
2
Impulse Response Duration
3
–40 dB
–60 dB
40
MSPS
0.2010
0.2025
0.2105
0.239
f
OUT
/f
CLOCK
f
OUT
/f
CLOCK
f
OUT
/f
CLOCK
f
OUT
/f
CLOCK
–62.5
32
dB
Input Clock Cycles
28
40
Input Clock Cycles
Input Clock Cycles
NOTES
1
Excludes SINX/X characteristic of DAC.
2
Defined as the number of data clock cycles between impulse input and peak of output response.
3
55 input clock periods from input to I DAC, 56 to Q DAC. Propagation delay is delay from data input to DAC update.
(T
MIN
to T
MAX
, AVDD = 2.7 V to 5.5 V, DVDD = 2.7 V to 5.5 V, I
OUTFS
= 10 mA unless other-
wise noted)
FREQUENCY RESPONSE
DC to f
CLOCK
/2
O
0
20
1200
0.5
0.1
0.2
0.3
0.4
40
60
80
100
Figure 2a. FIR Filter Frequency Response
TIME
Samples
1
0
0
40
5
10
15
20
25
30
35
0.9
0.6
0.4
0.2
0.1
0.8
0.7
0.5
0.3
0.1
0.2
0.3
N
Figure 2b. FIR Filter Impulse Response
Table I. Integer Filter Coefficients for 43-Tap Halfband
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)
1
0
–3
0
8
0
–16
0
29
0
–50
0
81
0
–131
0
216
0
–400
0
1264
1998
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