参数资料
| 型号： | ADV7120KPZ30 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 12/12页 |
| 文件大小： | 0K |
| 描述： | IC DAC VIDEO 3CH 30MHZ 44PLCC |
| 产品培训模块： | Data Converter Fundamentals DAC Architectures |
| 标准包装： | 1 |
| 设置时间： | 12ns |
| 位数： | 8 |
| 数据接口： | 并联 |
| 转换器数目： | 3 |
| 电压电源： | 单电源 |
| 功率耗散（最大）： | 625mW |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 44-LCC（J 形引线） |
| 供应商设备封装： | 44-PLCC（16.59x16.59） |
| 包装： | 管件 |
| 输出数目和类型： | 3 电流，单极 |
| 采样率（每秒）： | 30M |
ADV7120
REV. B
–9–
The unused analog outputs should be terminated with the same
load as that for the used channel. In other words, if the red
channel is used and IOR is terminated with a doubly terminated
75
load (37.5 ), IOB and IOG should be terminated with
37.5
resistors. (See Figure 6.)
GND
ADV7120
R0
R7
G0
G7
B0
B7
VIDEO
INPUT
DOUBLY
TERMINATED
75
LOAD
IOR
IOG
IOB
37.5
37.5
Figure 6. Input and Output Connections for Stand-Alone
Gray Scale or Composite Video
Video Output Buffers
The ADV7120 is specified to drive transmission line loads,
which is what most monitors are rated as. The analog output
configurations to drive such loads are described in the Analog
Interface section and illustrated in Figure 5. However, in some
applications it may be required to drive long “transmission line”
cable lengths. Cable lengths greater than 10 meters can attenu-
ate and distort high frequency analog output pulses. The inclu-
sion of output buffers will compensate for some cable distortion.
Buffers with large full power bandwidths and gains between 2
and 4 will be required.
These buffers will also need to be able to supply sufficient cur-
rent over the complete output voltage swing. Analog Devices
produces a range of suitable op amps for such applications.
These include the AD84X series of monolithic op amps. In very
high frequency applications (80 MHz), the AD9617 is recom-
mended. More information on line driver buffering circuits is
given in the relevant op amp data sheets.
Use of buffer amplifiers also allows implementation of other
video standards besides RS-343A and RS-170. Altering the gain
components of the buffer circuit will result in any desired
video level.
7
6
4
3
2
AD848
DACs
IOR, IOG, IOB
(CABLE)
Z
O = 75
Z
S = 75
(SOURCE
TERMINATION)
Z
L = 75
(MONITOR)
0.1
F
75
+V
S
Z
1
Z
2
–V
S
0.1
F
GAIN (G) = 1 +
Z
1
Z
2
Figure 7. AD848 As an Output Buffer
相关PDF资料 |
PDF描述 |
|---|---|
| ADV7125WBCPZ170 | IC DAC VIDEO 3-CH 330MHZ 48VFQFN |
| ADV7171KSZ-REEL | IC DAC VIDEO ENC NTSC 44-MQFP |
| ADV7172KSTZ-REEL | IC DAC VIDEO NTSC 6-CH 48-LQFP |
| ADV7177KSZ-REEL | IC DAC VIDEO NTSC 3-CH 44MQFP |
| ADV7179KCPZ-REEL | IC ENCODER VID NTSC/PAL 40LFCSP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ADV7120KPZ50 | 功能描述:IC DAC VIDEO 3CH 50MHZ 44PLCC RoHS:是 类别:集成电路 (IC) >> 数据采集 - 数模转换器 系列:- 标准包装:2,400 系列:- 设置时间:- 位数:18 数据接口:串行 转换器数目:3 电压电源:模拟和数字 功率耗散（最大）:- 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:36-TFBGA 供应商设备封装:36-TFBGA 包装:带卷 (TR) 输出数目和类型:* 采样率（每秒）:* |
| ADV7120KPZ80 | 功能描述:IC DAC VIDEO 3CH 80MHZ 44PLCC RoHS:是 类别:集成电路 (IC) >> 数据采集 - 数模转换器 系列:- 标准包装:2,400 系列:- 设置时间:- 位数:18 数据接口:串行 转换器数目:3 电压电源:模拟和数字 功率耗散（最大）:- 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:36-TFBGA 供应商设备封装:36-TFBGA 包装:带卷 (TR) 输出数目和类型:* 采样率（每秒）:* |
| ADV7120KST30 | 制造商:Analog Devices 功能描述:DAC 3-CH Segment 8-bit 48-Pin LQFP 制造商:Rochester Electronics LLC 功能描述:TRIPLE 8 BIT VIDEO DAC I.C. - Bulk 制造商:Analog Devices 功能描述:IC ((NS)) |
| ADV7120KST30-REEL | 制造商:Analog Devices 功能描述:DAC 3-CH Segment 8-bit 48-Pin LQFP T/R 制造商:Rochester Electronics LLC 功能描述:TRIPLE 8 BIT VIDEO DAC I.C. - Tape and Reel |
| ADV7120KST50 | 制造商:Analog Devices 功能描述:DAC 3-CH Segment 8-bit 48-Pin TQFP 制造商:Rochester Electronics LLC 功能描述:TRIPLE 8 BIT VIDEO DAC I.C. - Bulk 制造商:Analog Devices 功能描述:IC 8-BIT VIDEO DAC |
发布紧急采购，3分钟左右您将得到回复。