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参数资料
| 型号： | DAC7664YT |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | DAC |
| 英文描述： | PARALLEL, WORD INPUT LOADING, 12 us SETTLING TIME, 16-BIT DAC, PQFP64 |
| 封装： | GREEN, PLASTIC, LQFP-64 |
| 文件页数： | 16/32页 |
| 文件大小： | 661K |
| 代理商： | DAC7664YT |
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DAC7664
SBAS271 MARCH 2004
www.ti.com
23
3V TO 5V LOGIC INTERFACE
All of the digital input and output pins are compatible with
any logic supply voltage between 3V and 5V. Connect the
interface logic supply voltage to the IOVDD pin. Note that
the internal digital logic operates from 5V, so the VDD pin
must connect to a 5V supply.
GLITCH SUPPRESSION CIRCUIT
Figure 21, Figure 22, Figure 48, and Figure 49 show the
typical DAC output when switching between codes 7FFFh
and 8000h. For R-2R ladder DACs, this is potentially the
worst-case glitch condition, since every switch in the DAC
changes state. To minimize the glitch energy at this and
other code pairs with possible high-glitch outputs, an
internal track-and-hold circuit is used to maintain the DAC
ouput voltage at a nearly constant level during the internal
switching interval. This track-and-hold circuit is activated
only when the transition is at, or close to, one of the code
pairs with the high-glitch possibility.
It is advisable to avoid digital transitions within 1
s of the
rising edge of the LDAC signal. These signals can affect
the
charge
on
the
track-and-hold
capacitor, thus
increasing the glitch energy.
DIGITAL TIMING
Figure 57 and Table 2 provide detailed timing information
for the digital interface of the DAC7664.
DIGITAL INPUT CODING
The DAC7664 input data is in straight binary format. The
output voltage for single-supply operation is given by
Equation 1:
V
OUT
+ 2.5
N
65, 536
where N is the digital input code.
This equation does not include the effects of offset
(zero-scale) or gain (full-scale) errors.
The output for the dual supply operation is given by
Equation 2:
V
OUT
+ 5
N
65, 536
* 2.5
(1)
(2)
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| DAC7664YTG4 | 功能描述:数模转换器- DAC DAC Quad 16 Bit 12uS Settling Time 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 |
| DAC7678 | 制造商:TI 制造商全称:Texas Instruments 功能描述:12-Bit, Octal-Channel, Ultra-Low Glitch, Voltage Output, Two-Wire Interface Digital-to-Analog Converter with 2.5V Internal Reference |
| DAC7678_10 | 制造商:TI 制造商全称:Texas Instruments 功能描述:12-Bit, Octal-Channel, Ultra-Low Glitch, Voltage Output, Two-Wire Interface Digital-to-Analog Converter with 2.5V Internal Reference |
| DAC7678EVM | 功能描述:数据转换 IC 开发工具 DAC7678 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 |
| DAC7678EVM | 制造商:Texas Instruments 功能描述:12-Bit D/A Converter Eval. Module |
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