參數(shù)資料
型號(hào)： DAC1005D750HW
廠商： NXP Semiconductors N.V.
元件分類(lèi)： 外設(shè)及接口
英文描述： Dual 10-bit DAC, up to 750 Msps; 2x 4x and 8x interpolating
封裝： DAC1005D750HW/C1<SOT638-1 (HTQFP100)|<<http://www.nxp.com/packages/SOT638-1.html<1<Always Pb-free,;DAC1005D750HW/C1<SOT638-1 (HTQFP100)|<<http://www.nxp.com/packages/SOT6
文件頁(yè)數(shù)： 28/42頁(yè)
文件大?。?/td> 353K
代理商： DAC1005D750HW
DAC1005D750
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
DAC1005D750
Dual 10-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 DAC1005D750 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 DAC1005D750 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
I9 to I0 and Q9 to Q0
Binary
00 0000 0000
...
10 0000 0000
...
11 1111 1111
IOUTP (mA)
IOUTN (mA)
Two’s complement
10 0000 0000
...
00 0000 0000
...
01 1111 1111
0
...
8192
...
16383
0
...
10
...
20
20
...
10
...
0
I
O fs
I
IOUTP
I
IOUTN
+
=
I
IOUTP
I
O fs
1023
---------------
=
I
IOUTN
I
O fs
---------------------------------
1023
=
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DAC1005D750HW/C1,5 功能描述:數(shù)模轉(zhuǎn)換器- DAC DUAL 10BITS 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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