参数资料
| 型号： | AD9774ASZRL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 20/24页 |
| 文件大小： | 0K |
| 描述： | IC DAC 14BIT 32MSPS 44MQFP |
| 产品变化通告： | Product Discontinuance 27/Oct/2011 |
| 标准包装： | 800 |
| 系列： | TxDAC+® |
| 设置时间： | 35ns |
| 位数： | 14 |
| 数据接口： | 并联 |
| 转换器数目： | 1 |
| 电压电源： | 模拟和数字 |
| 功率耗散（最大）： | 1.13W |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 44-QFP |
| 供应商设备封装： | 44-MQFP（10x10） |
| 包装： | 带卷 (TR) |
| 输出数目和类型： | 2 电流，单极；2 电流，双极 |
| 采样率（每秒）： | 32M |
AD9774
–5–
REV. B
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection.
Although the AD9774 features proprietary ESD protection circuitry, permanent damage may
occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD
precautions are recommended to avoid performance degradation or loss of functionality.
Table I. Integer Filter Coefficients for First Stage Interpola-
tion Filter (55-Tap Halfband FIR Filter)
Lower
Upper
Integer
Coefficient
Value
H(1)
H(55)
–1
H(2)
H(54)
0
H(3)
H(53)
3
H(4)
H(52)
0
H(5)
H(51)
–7
H(6)
H(50)
0
H(7)
H(49)
15
H(8)
H(48)
0
H(9)
H(47)
–28
H(10)
H(46)
0
H(11)
H(45)
49
H(12)
H(44)
0
H(13)
H(43)
–81
H(14)
H(42)
0
H(15)
H(41)
128
H(16)
H(40)
0
H(17)
H(39)
–196
H(18)
H(38)
0
H(19)
H(37)
295
H(20)
H(36)
0
H(21)
H(35)
–447
H(22)
H(34)
0
H(23)
H(33)
706
H(24)
H(32)
0
H(25)
H(31)
–1274
H(26)
H(30)
0
H(27)
H(29)
3976
H(28)
6276
Table II. Integer Filter Coefficients for Second Stage Inter-
polation Filter (23-Tap Halfband FIR Filter)
Lower
Upper
Integer
Coefficient
Value
H(1)
H(23)
–6
H(2)
H(22)
0
H(3)
H(21)
37
H(4)
H(20)
0
H(5)
H(19)
–125
H(6)
H(18)
0
H(7)
H(17)
316
H(8)
H(16)
0
H(9)
H(15)
–736
H(10)
H(14)
0
H(11)
H(13)
2562
H(12)
4096
FREQUENCY – DC TO 2
fCLOCK
0
–20
–180
0
0.5
OUTPUT
–
dBFS
–80
–120
–140
–160
–40
–60
–100
1.0
1.5
2.0
Figure 2a. FIR Filter Frequency Response
TIME – Samples
1.0
–0.4
0
80
10
NORMALIZED
OUTPUT
20
30
40
50
60
70
0.8
0.4
0.2
0.0
–0.2
0.6
Figure 2b. FIR Filter Impulse Response
WARNING!
ESD SENSITIVE DEVICE
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