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参数资料
| 型号： | DAC5311IDCKRG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | DAC |
| 英文描述： | SERIAL INPUT LOADING, 12 us SETTLING TIME, 8-BIT DAC, PDSO6 |
| 封装： | GREEN, PLASTIC, SC-70, 6 PIN |
| 文件页数： | 22/42页 |
| 文件大小： | 2283K |
| 代理商： | DAC5311IDCKRG4 |
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POWER-ON RESET TO ZERO-SCALE
POWER-DOWN MODES
Resistor
StringDAC
Amplifier
Power-down
Circuitry
Resistor
Network
V
OUT
DAC NOISE PERFORMANCE
www.ti.com ................................................................................................................................................................................................ SBAS442 – AUGUST 2008
is also internally switched from the output of the
amplifier to a resistor network of known values. The
The DACx311 contains a power-on reset circuit that
advantage of this architecture is that the output
controls the output voltage during power-up. On
impedance of the part is known while the part is in
power-up, the DAC register is filled with zeros and
power-down mode. There are three different options.
the output voltage is 0V. The DAC register remains
The output is connected internally to GND either
that way until a valid write sequence is made to the
through a 1k
resistor or a 100k resistor, or is left
DAC. This design is useful in applications where it is
open-circuited (High-Z). Figure 113 illustrates the
important to know the state of the output of the DAC
output stage.
while it is in the process of powering up.
The occurring power-on glitch impulse is only a few
millivolts (typically, 17mV; see Figure 33).
The DACx311 contains four separate modes of
operation. These modes are programmable by setting
two bits (PD1 and PD0) in the control register.
Table 5 shows how the state of the bits corresponds
to the mode of operation of the device.
Table 5. Modes of Operation for the DACx311
Figure 113. Output Stage During Power-Down
PD1
PD0
OPERATING MODE
Normal Mode
All linear circuitry is shut down when the power-down
0
Normal Operation
mode is activated. However, the contents of the DAC
register are unaffected when in power-down. The
Power-Down Modes
time to exit power-down is typically 50
s for AV
DD =
0
1
Output 1k
to GND
5V and AVDD = 3V.
1
0
Output 100k
to GND
1
High-Z
When both bits are set to '0', the device works
Typical noise performance for the DACx311 is shown
normally with a standard power consumption of
in Figure 34 and 35. Output noise spectral density at
typically 80
A at 1.8V. However, for the three
the VOUT pin versus frequency is depicted in Figure
power-down modes, the typical supply current falls to
34 for full-scale, midscale, and zero-scale input
0.5
A at 5V, 0.4A at 3V, and 0.1A at 1.8V. Not
codes. The typical noise density for midscale code is
only does the supply current fall, but the output stage
110nV/
√Hz at 1kHz and at 1MHz.
Copyright 2008, Texas Instruments Incorporated
29
Product Folder Link(s): DAC5311 DAC6311 DAC7311
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| DAC5311IDCKRQ1 | 功能描述:数模转换器- DAC Auto Cat 8B Sgl Ch 80uA 1.8-5.5V 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 |
| DAC5311IDCKT | 功能描述:数模转换器- DAC 8B Sgl Ch 80uA 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 |
| DAC5311IDCKT | 制造商:Texas Instruments 功能描述:; Leaded Process Compatible:Yes; Peak Re 制造商:Texas Instruments 功能描述:IC, DAC, 8BIT, 225KSPS, SC-70-6 |
| DAC5311IDCKTG4 | 功能描述:数模转换器- DAC 8B Sgl Ch DAC w/SPI 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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