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参数资料
| 型号： | TLC7225IDWR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | DAC |
| 英文描述： | PARALLEL, 8 BITS INPUT LOADING, 8-BIT DAC, PDSO24 |
| 封装： | 0.300 INCH, GREEN, SOIC-24 |
| 文件页数： | 6/22页 |
| 文件大小： | 331K |
| 代理商： | TLC7225IDWR |
TLC7225C, TLC7225I
QUADRUPLE 8-BIT DIGITAL-TO-ANALOG CONVERTERS
SLAS109B – OCTOBER 1996 – REVISED FEBRUARY 2001
14
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
AGND bias for positive output offset
The TLC7225 AGND terminal can be biased above or below the system ground terminal, DGND, to provide an
offset-zero analog-output voltage level. Figure 10 shows a circuit configuration to achieve this for channel A of
the TLC7225. The output voltage, VO at OUTA, can be expressed as:
V
O +
V
bias )
D
A
V
I
where DA is a fractional representation of the digital input word (0 ≤ D ≤ 255/256).
_
+
DAC A
AGND
DGND
TLC7225
Vref
VO(OUTA)
5
22
2
7
3
VDD
6
VSS
VI
Vbias
Digital inputs omitted for clarity.
Figure 10. AGND Bias Circuit
Increasing AGND above system ground reduces the output range. VDD – Vref must be at least 4 V to ensure
specified operation. Since the AGND terminal is common to all four DACs, this method biases up the output
voltages of all the DACs in the TLC7225. Supply voltages VDD and VSS for the TLC7225 should be referenced
to DGND.
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相关代理商/技术参数 |
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| TLC7225IDWRG4 | 功能描述:数模转换器- DAC 8-Bit 5 us Quad DAC 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 |
| TLC7226C | 制造商:TI 制造商全称:Texas Instruments 功能描述:QUADRUPLE 8-BIT DIGITAL-TO-ANALOG CONVERTERS |
| TLC7226C_07 | 制造商:TI 制造商全称:Texas Instruments 功能描述:QUADRUPLE 8-BIT DIGITAL-TO-ANALOG CONVERTERS |
| TLC7226CD | 制造商:Texas Instruments 功能描述: |
| TLC7226CDW | 功能描述:数模转换器- DAC Quad DAC 8bit 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 |
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