参数资料
型号: AD9778ABSVZRL
厂商: Analog Devices Inc
文件页数: 32/56页
文件大小: 0K
描述: DAC 14BIT 1.0GSPS 100-TQFP
产品培训模块: DAC Architectures
标准包装: 1,000
位数: 14
数据接口: 并联
转换器数目: 2
电压电源: 模拟和数字
功率耗散(最大): 300mW
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 100-TQFP 裸露焊盘
供应商设备封装: 100-TQFP-EP(14x14)
包装: 带卷 (TR)
输出数目和类型: 4 电流,单极;4 电流,双极
采样率(每秒): 1G
AD9776A/AD9778A/AD9779A
Rev. B | Page 38 of 56
Table 21. Inverse Sinc Filter
As shown in Table 20, the mixing functions of most of the
modes result in cross-coupling of samples between the I and Q
channels. The I and Q channels only operate independently
with the fS/2 mode. This means that real modulation using both
the I and Q DAC outputs can only be done in the fS/2 mode. All
other modulation modes require complex input data and
produce complex output signals.
Lower Coefficient
Upper Coefficient
Integer Value
H(1)
H(9)
+2
H(2)
H(8)
4
H(3)
H(7)
+10
H(4)
H(6)
35
H(5)
N/A
+401
Table 20. Modulation Mixing Sequences
Modulation
The inverse sinc filter is disabled by default. It can be enabled by
setting the inverse sinc enable bit (Bit 3) in Register 0x02.
Mixing Sequence
fDAC/2
I = I, I, I, I, …
0
–0.5
–1.0
–1.5
–2.0
–2.5
–3.0
–3.5
–4.0
–4.5
0
0.05 0.10 0.15
0.20 0.25 0.30 0.35
0.40
0.45 0.50
f/fSAMPLE
(d
B
)
06
45
2-
08
8
SINC–1 RESPONSE
COMBINED SINC AND SINC–1 RESPONSE
Q = Q, Q, Q, Q, …
fDAC/4
I = I, Q, I, Q, …
Q = Q, I, Q, I, …
fDAC/4
I = I, Q, I, Q, …
Q = Q, I, Q, I, …
fDAC/8
I = I, r(I + Q), Q, r(I + Q), I, r(I + Q), Q, r(I Q),
Q = Q, r(Q I), I, r(Q + I), Q, r(Q + I), I, r(Q + I),
where r = √2/2
INVERSE SINC FILTER
The inverse sinc filter is implemented as a nine-tap FIR filter. It
is designed to provide less than ±0.05 dB pass-band ripple up to
a frequency of 0.4 × fDATA. To provide the necessary gain at the
upper end of the pass band, the inverse sinc filter has an intrinsic
insertion loss of 3.4 dB. The transfer function is shown in
Figure 71 and the tap coefficients are given in Table 21.
Figure 71. Transfer Function of Inverse Sinc Filter with the DAC sin(x)/x Output
相关PDF资料
PDF描述
VI-B1V-MU CONVERTER MOD DC/DC 5.8V 200W
VI-23H-IV CONVERTER MOD DC/DC 52V 150W
VI-23F-IV CONVERTER MOD DC/DC 72V 150W
VE-B3B-MU CONVERTER MOD DC/DC 95V 200W
AD9778BSVZRL IC DAC 14BIT DUAL 1GSPS 100TQFP
相关代理商/技术参数
参数描述
AD9778A-DPG2-EBZ 功能描述:BOARD EVALUATION FOR AD9778A RoHS:是 类别:编程器,开发系统 >> 评估板 - 数模转换器 (DAC) 系列:* 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- DAC 的数量:4 位数:12 采样率(每秒):- 数据接口:串行,SPI? 设置时间:3µs DAC 型:电流/电压 工作温度:-40°C ~ 85°C 已供物品:板 已用 IC / 零件:MAX5581
AD9778A-EBZ 制造商:Analog Devices 功能描述:Dual 12 /14 /16 Bit, 1 GSPS, Digital To Analog Converters Development Kit 制造商:Analog Devices 功能描述:DUAL 14B, 1.0 GSPS TXDAC - Bulk
AD9778BSVZ 功能描述:IC DAC 14BIT DUAL 1GSPS 100TQFP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 数模转换器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1,000 系列:- 设置时间:1µs 位数:8 数据接口:串行 转换器数目:8 电压电源:双 ± 功率耗散(最大):941mW 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:24-SOIC(0.295",7.50mm 宽) 供应商设备封装:24-SOIC W 包装:带卷 (TR) 输出数目和类型:8 电压,单极 采样率(每秒):*
AD9778BSVZ1 制造商:AD 制造商全称:Analog Devices 功能描述:Dual 12-/14-/16-Bit, 1 GSPS, Digital-to-Analog Converters
AD9778BSVZRL 功能描述:IC DAC 14BIT DUAL 1GSPS 100TQFP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 数模转换器 系列:- 产品培训模块:Data Converter Fundamentals DAC Architectures 标准包装:750 系列:- 设置时间:7µs 位数:16 数据接口:并联 转换器数目:1 电压电源:双 ± 功率耗散(最大):100mW 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:28-LCC(J 形引线) 供应商设备封装:28-PLCC(11.51x11.51) 包装:带卷 (TR) 输出数目和类型:1 电压,单极;1 电压,双极 采样率(每秒):143k