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| 型號： | DAC1401D125HL |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | 外設(shè)及接口 |
| 英文描述： | Dual 14-bit DAC, up to 125 Msps |
| 封裝： | DAC1401D125HL/C1<SOT313-2 (LQFP48)|<<http://www.nxp.com/packages/SOT313-2.html<1<Always Pb-free,;DAC1401D125HL/C1<SOT313-2 (LQFP48)|<<http://www.nxp.com/packages/SOT313-2 |
| 文件頁數(shù)： | 19/25頁 |
| 文件大?。?/td> | 359K |
| 代理商： | DAC1401D125HL |
DAC1401D125_1
NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 01 — 13 November 2008
19 of 25
NXP Semiconductors
DAC1401D125
Dual 14-bit DAC, up to 125 Msps
An external reference can also be used for applications requiring higher accuracy or
precise current adjustment. Due to the high input impedance of pin REFIO, applying an
external source disables the bandgap.
10.6 Gain control
Table 8
shows how to select the different gain control modes.
In Independent gain mode, both full-scale currents can be adjusted independently using
resistors R
A
on pin AVIRES and R
B
on pin BVIRES.
In Common gain mode, both full-scale currents are adjusted with the same resistor and
divided by two in both DACs.
10.7 Analog outputs
See
Figure 20
for the analog output circuit of one DAC. This circuit consists of a parallel
combination of PMOS current sources and associated switches for each segment.
Cascode source configuration enables the output impedance of the source to be
increased, thus improving the dynamic performance by reducing distortion.
The DAC1401D125 can be used either with:
a differential output, coupled to a transformer (or operational amplifier) to reduce
even-order harmonics and noise
or a single-ended output for applications requiring unipolar voltage.
The typical configuration is to use 1 V p-p level on each output IOUTAP/IOUTBP and
IOUTAN/IOUTBN but several combinations can be used as far as they respect the voltage
compliance range.
Table 8.
GAINCTRL
Gain control
Mode
DAC A
full-scale control
AVIRES
AVIRES
DAC B
full-scale control
BVIRES
AVIRES
0
1
independent gain control
common gain control
Fig 20. Equivalent analog output circuit
001aai821
RL
RL
AGND
AGND
IOUTAP/IOUTBP
IOUTAN/IOUTBN
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DAC1401D125HL/C1,1 | 功能描述:數(shù)模轉(zhuǎn)換器- DAC DAC 2-CH Segment 14-Bit 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 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時間: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 |
| DAC1401D125HL/C1,118 | 制造商:NXP Semiconductors 功能描述: |
| DAC1401D125HL-C1 | 功能描述:數(shù)模轉(zhuǎn)換器- 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 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時間: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 |
| DAC1401D125HL-C18 | 功能描述:數(shù)模轉(zhuǎn)換器- 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 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時間: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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