参数资料
型号: DAC5674IPHP
厂商: Texas Instruments
文件页数: 19/39页
文件大小: 0K
描述: IC DAC 14BIT 400MSPS 48-HTQFP
产品培训模块: Data Converter Basics
标准包装: 250
系列: CommsDAC™
设置时间: 20ns
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): 550mW
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 48-TQFP 裸露焊盘
供应商设备封装: 48-HTQFP(7x7)
包装: 托盘
输出数目和类型: 2 电流,单极
采样率(每秒): 400M
产品目录页面: 898 (CN2011-ZH PDF)
配用: 296-30860-ND - EVAL MODULE FOR DAC5674
其它名称: 296-15726
296-15726-1
296-15726-1-ND
296-15726-5
296-15726-5-ND
DAC5674
SLWS148A SEPTEMBER 2003 REVISED OCTOBER 2005
www.ti.com
26
RT
50
CAC
0.01
F
CAC
0.01
F
RT
50
VTT
Differential
ECL
or
(LV)PECL
Source
+
CLK
CLKC
Figure 32. Driving the DAC5674 With Differential ECL/PECL Clock Source
RT
50
CAC
0.01
F
CAC
0.01
F
RT
50
VTT
Single-Ended
ECL
or
(LV)PECL
Source
ECL/PECL
Gate
CLK
CLKC
Figure 33. Driving the DAC5674 With a Single-Ended ECL/PECL Clock Source
Supply Inputs
The DAC5674 comprises separate analog and digital supplies at AVDD, DVDD, and IOVDD. These supplies
can range from 3 V to 3.6 V for AVDD, 1.65 to 1.95 V for DVDD, and 1.65 to 3.6 for IOVDD.
DAC Transfer Function
The DAC5674 delivers complementary output currents IOUT1 and IOUT2. The DAC supports straight binary
coding, with D13 being the MSB and D0 the LSB. Output current IOUT1 equals the approximate full-scale output
current when all input bits are set high, i.e., the binary input word has the decimal representation 16383.
Full-scale output current flows through terminal IOUT2 when all input bits are set low (mode 0, straight binary
input). The relation between IOUT1 and IOUT2 can thus be expressed as:
IOUT1
+ 2
N
* 1
2N
IOUT
FS * IOUT2
Where IOUTFS is the full-scale output current, N = 14 bits. The output currents can be expressed as:
IOUT1
+ IOUT
FS
CODE
16384
IOUT2
+ IOUT
FS
16383
* CODE
16384
Where CODE is the decimal representation of the DAC data input word. Output currents IOUT1 and IOUT2
drive resistor loads (RL) or a transformer with equivalent input load resistance (RL). This would translate into
single-ended voltages VOUT1 and VOUT2 at terminal IOUT1 and IOUT2, respectively, of:
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DAC5674IPHP-ND 制造商: 功能描述: 制造商:undefined 功能描述:
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