参数资料
| 型号： | AD7225CRSZ-RL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 10/24页 |
| 文件大小： | 0K |
| 描述： | IC DAC 8BIT LC2MOS QUAD 24SSOP |
| 标准包装： | 1,500 |
| 设置时间： | 4µs |
| 位数： | 8 |
| 转换器数目： | 4 |
| 电压电源： | 双 ± |
| 功率耗散（最大）： | 500mW |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 24-SSOP |
| 包装： | 带卷 (TR) |
| 输出数目和类型： | 4 电压，单极；4 电压，双极 |
| 采样率（每秒）： | * |
AD7225
Rev. C | Page 18 of 24
less, there exists a good correlation with the actual performance
of the transversal filter (see Figure 23).
DIGITAL WORD MULTIPLICATION
Because each DAC of the AD7225 has a separate reference input,
the output of one DAC can be used as the reference input for
another. This means that multiplication of digital words can be
performed (with the result given in analog form). For example,
if the output from DAC A is applied to VREFB, then the output
from DAC B, VOUTB, can be expressed as:
VOUTB = DA × DB × VREFA
where DA and DB are the fractional representations of the digital
words in DAC Latch A and DAC Latch B, respectively.
If DA = DB = D, the result is D2 × VREFA.
In this manner, the four DACs can be used on their own or in
conjunction with an external summing amplifier to generate
complex waveforms. Figure 24 shows one such application.
In this case, the output waveform, Y, is represented by
Y = (x4 + 2x3 + 3x2 + 2x + 4) × VIN
where x is the digital code that is applied to all four DAC
latches.
*DIGITAL INPUTS OMITTED FOR CLARITY.
100k
Y
VOUTA
VREFA
VOUTB
VREFB
VOUTC
VREFC
VOUTD
VREFD
VSS
AGND DGND
15V
VDD
AD7225*
VIN
100k
50k
33k
50k
25k
00986-
024
Figure 24. Complex Waveform Generation
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| AD7225KN | 功能描述:IC DAC 8BIT QUAD W/AMP 24-DIP RoHS:否 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）:* |
| AD7225KN/+ | 制造商:未知厂家 制造商全称:未知厂家 功能描述:8-Bit Digital-to-Analog Converter |
| AD7225KNZ | 功能描述:IC DAC 8BIT QUAD W/AMP 24DIP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 数模转换器 系列:- 标准包装:1 系列:- 设置时间:4.5µs 位数:12 数据接口:串行，SPI? 转换器数目:1 电压电源:单电源 功率耗散（最大）:- 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 供应商设备封装:8-SOICN 包装:剪切带 (CT) 输出数目和类型:1 电压，单极；1 电压，双极 采样率（每秒）:* 其它名称:MCP4921T-E/SNCTMCP4921T-E/SNRCTMCP4921T-E/SNRCT-ND |
| AD7225KNZ | 制造商:Analog Devices 功能描述:D/A Converter (D-A) IC |
| AD7225KP | 制造商:Analog Devices 功能描述:DAC 4-CH R-2R 8-bit 28-Pin PLCC 制造商:Rochester Electronics LLC 功能描述:CMOS DAC IC - Bulk |
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