参数资料
型号: DAC5674IPHP
厂商: Texas Instruments
文件页数: 5/39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
13
DETAILED DESCRIPTION
Figure 1 shows a simplified block diagram of the DAC5674. The CMOS device consists of a segmented array
of PMOS current sources, capable of delivering a full-scale output current up to 20 mA. Differential current
switches direct the current of each current source to either one of the complementary output nodes IOUT1 or
IOUT2. The complementary output currents thus enable differential operation, canceling out common mode
noise sources (digital feedthrough, on-chip, and PCB noise), dc offsets, even-order distortion components, and
increase signal output power by a factor of two.
The full-scale output current is set using an external resistor RBIAS in combination with an on-chip band-gap
voltage reference source (1.2 V) and control amplifier. The current IBIAS through resistor RBIAS is mirrored
internally to provide a full-scale output current equal to 32 times IBIAS. The full-scale current can be adjusted
from 20 mA down to 2 mA.
Interpolation Filter
The interpolation filters FIR1 and FIR2 can be configured for either low-pass or high-pass response. In this way,
higher order images can be selected. Table 1 shows the DAC IF output range for the different filter response
combinations, for both the first and second Nyquist zone (after interpolation). Table 2 lists the DAC IF output
ranges for two popular GSM data rates. Table 3 shows the W-CDMA IF carrier center frequency for an input
data rate of 61.44 MSPS and a fundamental input IF of 15.36 MHz. Figure 15 shows the spectral response;
the corresponding nonzero tap weights are:
D [5, 20, 50, 108, 206, 361, 597, 947, 1467, 2267, 3633, 6617, 20746, 32768]
f / fin
150
100
50
0
0.0
0.2
0.4
0.6
0.8
1.0
Amplitude
dB
AMPLITUDE
vs
FREQUENCY
f / fin
0.0
0.2
0.4
0.6
0.8
1.0
0.005
Amplitude
dB
AMPLITUDE
vs
FREQUENCY
0.005
0.000
Figure 15. FIR1 and FIR2 Magnitude Spectrum
相关PDF资料
PDF描述
VI-J73-MZ-F2 CONVERTER MOD DC/DC 24V 25W
VI-23L-MW-F2 CONVERTER MOD DC/DC 28V 100W
DAC7802LU IC DUAL 12B CMOS MULT D/A 24SOIC
GTC00CF-22-22S CONN RCPT 4POS WALL MNT W/SCKT
VI-J7H-MZ-F3 CONVERTER MOD DC/DC 52V 25W
相关代理商/技术参数
参数描述
DAC5674IPHPG4 功能描述:数模转换器- DAC 14-Bit 400 CommsDAC RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube
DAC5674IPHP-ND 制造商: 功能描述: 制造商:undefined 功能描述:
DAC5674IPHPR 功能描述:数模转换器- DAC 14-Bit 400 CommsDAC RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube
DAC5674IPHPRG4 功能描述:数模转换器- DAC 14-Bit 400 CommsDAC RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube
DAC5675 制造商:TI 制造商全称:Texas Instruments 功能描述:14-BIT, 400-MSPS DIGITAL-TO-ANALOG CONVERTER