参数资料
| 型号： | DAC5674IPHPRG4 |
| 厂商： | Texas Instruments |
| 文件页数： | 13/39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： | 1,000 |
| 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： | 带卷 (TR) |
| 输出数目和类型： | 2 电流，单极 |
| 采样率（每秒）： | 400M |
| 配用： | 296-30860-ND - EVAL MODULE FOR DAC5674 |
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DAC5674
SLWS148A SEPTEMBER 2003 REVISED OCTOBER 2005
www.ti.com
20
PLLVDD
PLLGND
CLKGND
CLKVDD
CLK
CLKC
PFD
VCO
/1
/2
/4
/8
/2
D[13:0]
DIV[1:0]
PLLVDD
X4
PLLVDD
PLLLOCK
LPF
s
1
0
Clk
Buffer
Clk_4
y
DAC5674
Charge
Pump
s
1
0
Clk_2
y
Clk_1
y
Data
Figure 21. Clock Generation Functional Diagram
Table 4. Clock Mode Configuration
CLOCK MODE
PLLVDD
DIV[1:0]
X4
DATA RANGE (MHz)
PLLLOCK PIN FUNCTION
External 2
×
0 V
XX
0
DC to 200
External clock/2
External 4
×
0 V
XX
1
DC to 100
External clock/4
Internal 2
×
3.3 V
00
0
100 to 200
Internal PLL lock indicator
Internal 2
×
3.3 V
01
0
50 to 100
Internal PLL lock indicator
Internal 2
×
3.3 V
10
0
25 to 50
Internal PLL lock indicator
Internal 2
×
3.3 V
11
0
12 to 25
Internal PLL lock indicator
Internal 4
×
3.3 V
00
1
50 to 100
Internal PLL lock indicator
Internal 4
×
3.3 V
01
1
25 to 50
Internal PLL lock indicator
Internal 4
×
3.3 V
10
1
12 to 25
Internal PLL lock indicator
Internal 4
×
3.3 V
11
1
5 to 12
Internal PLL lock indicator
Low-Pass Filter
The PLL consists of a type four phase-frequency detector (PFD), charge pump, external low-pass loop filter,
voltage to current converter, and current controlled oscillator (ICO) as shown in Figure 22. The DAC5674
evaluation board comes with component values R = 200, C1 = 0.01
F, and C2 = 100 pF. These values have
been designed to give the phase margins and loop bandwidths listed in Table 5 for the five divide down factors
of prescaling and interpolation. Note that the values derived were based on a charge pump current output of
1 mA and a VCO gain of 300 MHz/V (nominal at Fvco = 400 MHz). With this filter, the settling time from a phase
or frequency disturbance is about 2.5
s. If different PLL dynamics are required, DAC5674 users can design
a second order filter for their application; see the Designing the PLL Loop Filter section of this data sheet.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DAC5675 | 制造商:TI 制造商全称:Texas Instruments 功能描述:14-BIT, 400-MSPS DIGITAL-TO-ANALOG CONVERTER |
| DAC5675A | 制造商:TI 制造商全称:Texas Instruments 功能描述:14-Bit, 400MSPS Digital-to-Analog Converter |
| DAC5675AEVM | 功能描述:数据转换 IC 开发工具 DAC5675A Eval Mod RoHS:否 制造商:Texas Instruments 产品:Demonstration Kits 类型:ADC 工具用于评估:ADS130E08 接口类型:SPI 工作电源电压:- 6 V to + 6 V |
| DAC5675AIPHP | 功能描述:数模转换器- DAC 14-Bit 400-MSPS 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 |
| DAC5675AIPHP | 制造商:Texas Instruments 功能描述:IC DAC 14BIT 400MSPS 48-HTQFP |
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