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参数资料
| 型号： | DAC8554IPWR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | DAC |
| 英文描述： | SERIAL INPUT LOADING, 12 us SETTLING TIME, 16-BIT DAC, PDSO16 |
| 封装： | GREEN, PLASTIC, TSSOP-16 |
| 文件页数： | 18/31页 |
| 文件大小： | 1039K |
| 代理商： | DAC8554IPWR |
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LAYOUT
SLAS431B – JUNE 2005 – REVISED OCTOBER 2006
As with the GND connection, AVDD should be
connected to a positive power-supply plane or trace
A precision analog component requires careful
that is separate from the connection for digital logic
layout,
adequate
bypassing,
and
clean,
until they are connected at the power-entry point. In
well-regulated power supplies.
addition, a 1
F to 10F capacitor in parallel with a
0.1
F bypass capacitor is strongly recommended. In
The DAC8554 offers single-supply operation, and it
some
situations,
additional
bypassing
may
be
will often be used in close proximity with digital logic,
required, such as a 100
F electrolytic capacitor or
microcontrollers, microprocessors, and digital signal
even
a
Pi
filter
made
up
of
inductors
and
processors. The more digital logic present in the
capacitors—all designed to essentially low-pass filter
design and the higher the switching speed, the more
the supply, removing the high-frequency noise.
difficult it is to keep digital noise from appearing at
the output.
Up to four DAC8554 devices can be used on a single
SPI bus without any glue logic to create a high
Due to the single ground pin of the DAC8554, all
channel count solution. Special attention is required
return currents, including digital and analog return
to avoid digital signal integrity problems when using
currents for the DAC, must flow through a single
multiple DAC8554s on the same SPI bus. Signal
point. Ideally, GND would be connected directly to an
integrity of SYNC, SCLK, and DIN lines will not be an
analog ground plane. This plane would be separate
issue as long as the rise times of these digital signals
from
the
ground
connection
for
the
digital
are longer than six times the propagation delay
components until they
were
connected
at
the
between any two DAC8554 devices. Propagation
power-entry point of the system.
speed is approximately six inches/ns on standard
The power applied to AVDD should be well-regulated
printed circuit boards (PCBs). Therefore, if the digital
and low-noise. Switching power supplies and dc/dc
signal rise time is 1ns, the distance between any two
converters often have high-frequency glitches or
DAC8554s has to be further apart on the PCB, and
spikes riding on the output voltage. In addition, digital
the signal rise times should be reduced by placing
components
can
create
similar
high-frequency
series resistors at the drivers for SYNC, SCLK, and
spikes. This noise can easily couple into the DAC
DIN lines. If the largest distance between any two
output voltage through various paths between the
DAC8554s must be six inches, the rise time should
power connections and analog output.
be reduced to 6ns with an RC network formed by the
series resistor at the digital driver and the total trace
and input capacitance on the PCB.
25
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DAC8554IPWRG4 | 功能描述:数模转换器- DAC 16-Bit Quad Ch UltLo Glitch Vltg Output 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 |
| DAC8555 | 制造商:BB 制造商全称:BB 功能描述:16-BIT, QUAD CHANNEL, ULTRALOW GLITCH, VOLTAGE OUTPUT DIGITAL-TO-ANALOG CONVERTER |
| DAC8555EVM | 功能描述:数据转换 IC 开发工具 QUAD CH. DAC 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 |
| DAC8555IPW | 功能描述:数模转换器- DAC 16-Bit Quad Ch UltLo Glitch Vltg Output 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 |
| DAC8555IPW | 制造商:Texas Instruments 功能描述:IC DAC 16BIT QUAD 16-TSSOP 制造商:Texas Instruments 功能描述:IC, DAC 16BIT QUAD 16-TSSOP 制造商:Texas Instruments 功能描述:IC, DAC 16BIT QUAD 16-TSSOP; Resolution (Bits):16bit; Sampling Rate:200kSPS; Input Channel Type:Serial; Supply Voltage Range:2.7V to 5.5V; Digital IC Case Style:TSSOP; No. of Pins:16; Data Interface:3 Wire, Serial; Supply ;RoHS Compliant: Yes |
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