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参数资料
| 型号： | HI5741-EVS |
| 厂商： | Intersil |
| 文件页数： | 1/13页 |
| 文件大小： | 0K |
| 描述： | EVALUATION PLATFORM HI5741 |
| 标准包装： | 1 |
| DAC 的数量： | 1 |
| 位数： | 14 |
| 采样率（每秒）： | 100M |
| 数据接口： | 并联 |
| 设置时间： | 20ns |
| DAC 型： | 电流 |
| 工作温度： | -40°C ~ 85°C |
| 已供物品： | 板 |
| 已用 IC / 零件： | HI5741 |
Using The HI5741 Evaluation Module
TM
Application Note
July 1996
AN9626
Introduction
The HI5741 is a 14-bit 100MHz Digital to Analog Converter.
This current out DAC is designed for low glitch and high
Spurious Free Dynamic Range operation. As a result, this
DAC is ideally suited for Signal Reconstruction and DDS
(Direct Digital Synthesis) applications due to its inherent low
noise design.
Architecture
The HI5741 DAC is designed with a split architecture to
minimize glitch while maximizing linearity. Figure 1 shows
the functional architecture of the device. The 10 least
signi?cant bits of the converter are derived by a traditional
R/2R network to binarily weight the 1.28mA (nominal)
current sources. The upper 4, or most signi?cant bits, are
implemented as segmented or thermometer decoded
current sources. The thermometer decoder converts the
(LSB) D0
D1
D2
D3
incoming 4 bits to 15 control lines to enable the most
signi?cant current sources.
As shown in Figure 2, the thermometer decoder translates
the 4 bit binary input data into a decode that enables
individual current sources. For example, a binary code of
0110 on the data bits D10 through D13 will enable current
sources I1, I2, I3, I4, I5, and I6. The thermometer decoding
architecture ensures good differential non-linearity, which is
further enhanced by the addition of laser trimming. Also,
compared to a straight R/2R design, the worst case glitch is
greatly reduced since creating the MSB current is the sum of
current sources I1 through I8. Overall glitch is therefore
reduced by a factor of 16. This also reduces the theoretical
switching skew from current source to current source by
using identically sized switches with identical gain, leakage,
and transient responses.
D4
10 LSBs
R/2R
D5
D6
D7
14-BIT
MASTER
REGISTER
DATA
BUFFER/
LEVEL
SHIFTER
SLAVE
REGISTER
CURRENT
CELLS
NETWORK
D8
D9
D10
15
D11
UPPER
SWITCHED
D12
(MSB) D13
CLK
4-BIT
DECODER
CURRENT
CELLS
REF CELL
I OUT
I OUT
CTRL AMP
IN
OVERDRIVEABLE
VOLTAGE
+
-
25 ?
CTRL AMP
OUT
REFERENCE
AV EE
AGND
DV EE
DGND
V CC
REF OUT
R SET
FIGURE 1. HI5741 BLOCK DIAGRAM
3-1
1-888-INTERSIL or 321-724-7143
|
Intersil and Design is a trademark of Intersil Corporation.
|
Copyright
? Intersil Corporation 2000
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相关代理商/技术参数 |
参数描述 |
|---|---|
| HI5746 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:10-Bit, 40 MSPS A/D Converter |
| HI5746_04 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:10-Bit, 40MSPS A/D Converter |
| HI5746EVAL1 | 功能描述:EVALUATION PLATFORM HI5746 RoHS:否 类别:编程器，开发系统 >> 过时/停产零件编号 系列:- 标准包装:1 系列:- 传感器类型:CMOS 成像，彩色（RGB） 传感范围:WVGA 接口:I²C 灵敏度:60 fps 电源电压:5.7 V ~ 6.3 V 嵌入式:否 已供物品:成像器板 已用 IC / 零件:KAC-00401 相关产品:4H2099-ND - SENSOR IMAGE WVGA COLOR 48-PQFP4H2094-ND - SENSOR IMAGE WVGA MONO 48-PQFP |
| HI5746KCA | 功能描述:IC ADC 10-BIT 40MSPS 28-SSOP RoHS:否 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 位数:12 采样率（每秒）:3M 数据接口:- 转换器数目:- 功率耗散（最大）:- 电压电源:- 工作温度:- 安装类型:表面贴装 封装/外壳:SOT-23-6 供应商设备封装:SOT-23-6 包装:带卷 (TR) 输入数目和类型:- |
| HI5746KCAZ | 功能描述:模数转换器 - ADC A/D 10-BIT 40MSPS 28 SSOP COM TEMP RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
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