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參數(shù)資料
型號(hào)： TLC7225CDWRG4
廠商： TEXAS INSTRUMENTS INC
元件分類(lèi)： DAC
英文描述： PARALLEL, 8 BITS INPUT LOADING, 8-BIT DAC, PDSO24
封裝： 0.300 INCH, GREEN, SOIC-24
文件頁(yè)數(shù)： 3/22頁(yè)
文件大小： 331K
代理商： TLC7225CDWRG4
TLC7225C, TLC7225I
QUADRUPLE 8-BIT DIGITAL-TO-ANALOG CONVERTERS
SLAS109B – OCTOBER 1996 – REVISED FEBRUARY 2001
11
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
ground management and layout
The TLC7225 contains four reference inputs that can be driven from ac sources (see multiplying DAC using ac
input to the REF terminals section) so careful layout and grounding is important to minimize analog crosstalk
between the four channels. The dynamic performance of the four DACs depends upon the optimum choice of
board layout. Figure 6 shows the relationship between input frequency and channel-to-channel isolation.
Figure 7 shows a printed circuit board layout that minimizes crosstalk and feedthrough. The four input signals
are screened by AGND. Vref was limited between 2 V and 3.24 V to avoid slew-rate limiting effects from the
output amplifier during measurements.
– 80
– 70
– 60
– 50
– 40
– 30
20 k
50 k
100 k
200 k
500 k
1 M
fI – Input Frequency – Hz
Isolation
–
dB
TA = 25°C
VDD = 15 V
VSS = – 5 V
Vref = 1.24 VPP
– 20
10 k
Figure 6. Channel-to-Channel Isolation
MSB
LSB
Terminal 1
System GND
OUTB
OUTA
VSS
REFB
REFA
AGND
DGND
OUTC
OUTD
VDD
REFC
REFD
Figure 7. Suggested PCB Layout (Top View)
相關(guān)PDF資料
PDF描述
TLC7225IDWRG4 PARALLEL, 8 BITS INPUT LOADING, 8-BIT DAC, PDSO24
TLC7225IDWG4 PARALLEL, 8 BITS INPUT LOADING, 8-BIT DAC, PDSO24
TLC7225CDWR PARALLEL, 8 BITS INPUT LOADING, 8-BIT DAC, PDSO24
TLC7225CDWG4 PARALLEL, 8 BITS INPUT LOADING, 8-BIT DAC, PDSO24
TLC7226EDWR QUAD, PARALLEL, 8 BITS INPUT LOADING, 8-BIT DAC, PDSO20
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TLC7225I 制造商:TI 制造商全稱:Texas Instruments 功能描述:QUADRUPLE 8-BIT DIGITAL-TO-ANALOG CONVERTERS
TLC7225IDW 功能描述:數(shù)模轉(zhuǎn)換器- DAC Quad DAC 8bit RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類(lèi)型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube
TLC7225IDWG4 功能描述:數(shù)模轉(zhuǎn)換器- DAC 8-Bit 5 us Quad DAC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類(lèi)型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube
TLC7225IDWR 功能描述:數(shù)模轉(zhuǎn)換器- DAC 8-Bit 5 us Quad DAC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類(lèi)型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube
TLC7225IDWRG4 功能描述:數(shù)模轉(zhuǎn)換器- DAC 8-Bit 5 us Quad DAC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類(lèi)型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube
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