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| 型號(hào)： | DAC1205D750HW |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | 外設(shè)及接口 |
| 英文描述： | Dual 12-bit DAC, up to 750 Msps; 2x 4x and 8x interpolating |
| 封裝： | DAC1205D750HW/C1<SOT638-1 (HTQFP100)|<<http://www.nxp.com/packages/SOT638-1.html<1<Always Pb-free,;DAC1205D750HW/C1<SOT638-1 (HTQFP100)|<<http://www.nxp.com/packages/SOT6 |
| 文件頁數(shù)： | 28/42頁 |
| 文件大小： | 352K |
| 代理商： | DAC1205D750HW |
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DAC1205D750
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 3 — 7 June 2011
28 of 42
NXP Semiconductors
DAC1205D750
Dual 12-bit DAC, up to 750 Msps; 4x and 8x interpolating
10.9 DAC transfer function
The full-scale output current for each DAC is the sum of the two complementary current
outputs:
(3)
The output current depends on the digital input data:
(4)
(5)
The setting applied to CODING (register 00h[2]; see
Table 9 “Register allocation map”
)
defines whether the DAC1205D750 operates with a binary input or a two’s complement
input.
Table 38
shows the output current as a function of the input data, when I
O(fs)
= 20 mA.
Table 38.
Data
10.10 Full-scale current
10.10.1
Regulation
The DAC1205D750 reference circuitry integrates an internal bandgap reference voltage
which delivers a 1.25 V reference to the GAPOUT pin. It is recommended to decouple pin
GAPOUT using a 100 nF capacitor.
The reference current is generated via an external resistor of 910
(1 %) connected to
pin VIRES. A control amplifier sets the appropriate full-scale output current (I
O(fs)
) for both
DACs (see
Figure 11
).
DAC transfer function
I11 to I0 and Q11 to Q0
Binary
0000 0000 0000
...
1000 0000 0000
...
1111 1111 1111
IOUTP (mA)
IOUTN (mA)
Two’s complement
1000 0000 0000
...
0000 0000 0000
...
0111 1111 1111
0
...
8192
...
16383
0
...
10
...
20
20
...
10
...
0
I
O fs
I
IOUTP
I
IOUTN
+
=
I
IOUTP
I
O fs
4095
---------------
=
I
IOUTN
I
O fs
---------------------------------
4095
=
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| DAC1205D750HW/C1,5 | 功能描述:數(shù)模轉(zhuǎn)換器- DAC DL 12BIT DAC 750MSPS 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(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 |
| DAC1208 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:12-Bit, uP Compatible, Double-Buffered D to A Converters |
| DAC1208D650 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Dual 12-bit DAC; up to 650 Msps; 2×, 4× or 8× interpolating with JESD204A interface |
| DAC1208D650HN | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Dual 12-bit DAC; up to 650 Msps; 2×, 4× or 8× interpolating with JESD204A interface |
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