- 您现在的位置：买卖IC网 > PDF目录17064 > AD9778A-DPG2-EBZ (Analog Devices Inc)BOARD EVALUATION FOR AD9778A PDF资料下载
参数资料
| 型号： | AD9778A-DPG2-EBZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 29/56页 |
| 文件大小： | 0K |
| 描述： | BOARD EVALUATION FOR AD9778A |
| 标准包装： | 1 |
| 系列： | * |
| DAC 的数量： | 2 |
| 位数： | 14 |
| 采样率（每秒）： | 1G |
| 数据接口： | 并联 |
| DAC 型： | 电流 |
| 工作温度： | -40°C ~ 85°C |
| 已供物品： | * |
| 已用 IC / 零件： | AD9778A |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页当前第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页
AD9776A/AD9778A/AD9779A
Rev. B | Page 35 of 56
10
–100
–4
4
–3
–2
–1
0123
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
fOUT (× Input Data Rate)
AT
T
E
N
UAT
IO
N
(
d
B
)
06
45
2-
0
61
10
–100
–4
4
–3
–2
–1
0123
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
fOUT (× Input Data Rate)
AT
T
E
N
UAT
IO
N
(
d
B
)
06
45
2-
0
64
Figure 64. Interpolation/Modulation Combination of fDAC/8 Filter
Figure 67. Interpolation/Modulation Combination of 3fDAC/8 Filter
Shifted mode filter responses allow the pass band to be centered
around ±0.5 fDATA, ±1.5 fDATA, ±2.5 fDATA, and ±3.5 fDATA. Switching to
the shifted mode response does not affect the center frequency
of the signal. Instead, the pass band of the filter is simply shifted.
For example, use the response shown in Figure 67 and assume
the signal in-band is a complex signal over the bandwidth 3.2 fDATA
to 3.3 fDATA. If the shifted mode filter response is then selected,
the pass band becomes centered at 3.5 fDATA. However, the signal
remains at the same place in the spectrum. The shifted mode
capability allows the filter pass band to be placed anywhere in
the DAC Nyquist bandwidth.
10
–100
–4
4
–3
–2
–1
0123
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
fOUT (× Input Data Rate)
AT
T
E
N
UAT
IO
N
(
d
B
)
06
45
2-
0
62
The AD9776A/AD9778A/AD9779A are dual DACs with
internal complex modulators built into the interpolating filter
response. In dual channel mode, the devices expect the real and
imaginary components of a complex signal at Digital Input Port 1
and Digital Input Port 2 (I and Q, respectively). The DAC outputs
then represent the real and imaginary components of the input
signal, modulated by the complex carrier (fDAC/2, fDAC/4, or fDAC/8).
Figure 65. Interpolation/Modulation Combination of fDAC/8 Filter
10
–100
–4
4
–3
–2
–1
0123
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
fOUT (× Input Data Rate)
AT
T
E
N
UAT
IO
N
(
d
B
)
06
45
2-
0
63
With Register 0x02, Bit 6, set, the device accepts interleaved data
on Port 1 in the I, Q, I, Q … sequence. Note that in interleaved
mode, the channel data rate at the beginning of the I and Q data
paths is now half the input data rate because of the interleaving.
The maximum input data rate is still subject to the maximum
specification of the device. This limits the synthesis bandwidth
available at the input in interleaved mode.
With Register 0x02, Bit 5 (the real mode bit), set, the Q channel
and the internal I and Q digital modulation are turned off. The
output spectrum at the I DAC then represents the signal at
Digital Input Port 1, interpolated by 1×, 2×, 4×, or 8×.
The general recommendation is that if the desired signal is
within ±0.4 × fDATA, use the nonshifted filter mode. Outside of
this, the shifted filter mode should be used. In any situation, the
total bandwidth of the signal is less than 0.8 × fDATA.
Figure 66. Interpolation/Modulation Combination of 2fDAC/8 Filter
相关PDF资料 |
PDF描述 |
|---|---|
| SDR0403-101KL | INDUCTOR 100UH 10% NON-SHLD SMD |
| AD9776A-DPG2-EBZ | BOARD EVALUATION FOR AD9776A |
| DC1009A-B | BOARD DELTA SIGMA ADC LTC2488 |
| AD9787-DPG2-EBZ | BOARD EVALUATION FOR AD9787 |
| ESA10DTKS | CONN EDGECARD 20POS DIP .125 SLD |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
| AD9778BSVZRL1 | 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 |
发布紧急采购，3分钟左右您将得到回复。