參數(shù)資料
型號(hào)： DAC8420QBC
廠(chǎng)商： ANALOG DEVICES INC
元件分類(lèi)： DAC
英文描述： Quad 12-Bit Serial Voltage Output DAC
中文描述： QUAD, SERIAL INPUT LOADING, 13 us SETTLING TIME, 12-BIT DAC, UUC16
封裝： 0.119 X 0.283 INCH, DIE-16
文件頁(yè)數(shù)： 14/16頁(yè)
文件大小： 587K
代理商： DAC8420QBC
DAC8420
REV. 0
–14–
DAC-8420
DIGITAL
CONTROL
4
9
15
16
14
12
11
10
8
2
3
6
7
1
5
DAC A
DAC B
DAC C
DAC D
VOUTA
VOUTB
VOUTC
VOUTD
DIGITAL INPUTS
GND
VREFLO
0.1μF
+5V SUPPLY
VREFHI
5
4
6
9
8
11
10
2
1
14
3
12
CMP-04
13
0.1μF
+5V
+5V
604
+5V
RED LED
604
OUT
A
OUT B
VINA
VINB
RED LED
REF-43
VIN
V
OUT
GND
+5V SUPPLY
2.5V
0.1μF
6
2
4
7
C1
C2
C3
C4
Figure 31. Dual Programmable Window Comparator
MC68HC11 Microcontroller Interfacing
Figure 32 shows a serial interface between the DAC8420 and
the MC68HC11 8-bit microcontroller. The SCK output of the
68HC11 drives the CLK input of the DAC, and the MOSI port
outputs the serial data to load into the SDI input of the DAC.
The port lines PD5, PC0, PC1, and PC2 provide the controls to
the DAC as shown.
PC2
PC1
PC0
(PD5) SS
SCK
MOSI
MC68HC11*
CLSEL
CLR
CS
LD
CLK
SDI
DAC-8420*
*ADDITIONAL PINS OMITTED FOR CLARITY
Figure 32. MC68HC11 Microcontroller Interface
For correct operation, the 68HC11 should be configured such
that its CPOL bit and CPHA bit are both set to 1. In this con-
figuration, serial data on MOSI of the 68HC11 is valid on the
rising edge of the clock, which is the required timing for the
DAC8420 Data is transmitted in 8-bit bytes (MSB first), with
only eight rising clock edges occurring in the transmit cycle. To
load data to the DAC8420’s input register, PC0 is taken low
and held low during the entire loading cycle. The first 8 bits are
shifted in address first, immediately followed by another 8 bits
in the second least-significant byte to load the complete 16-bit
word. At the end of the second byte load, PC0 is then taken
high. To prevent an additional advancing of the internal shift
register, SCK must already be asserted before PC0 is taken
high. To transfer the contents of the input shift register to the
DAC register, PD5 is then taken low, asserting the
LD
input of
the DAC and completing the loading process. PD5 should re-
turn high before the next load cycle begins. The DAC8420’s
CLR
input, controlled by the output PC1, provides an asyn-
chronous clear function.
相關(guān)PDF資料
PDF描述
DAC8420FP Quad 12-Bit Serial Voltage Output DAC
DAC8420FQ Quad 12-Bit Serial Voltage Output DAC
DAC8420FS Quad 12-Bit Serial Voltage Output DAC
DAC8420EQ Quad 12-Bit Serial Voltage Output DAC
DAC8420EP Quad 12-Bit Serial Voltage Output DAC
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DAC8426 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:Quad 8-Bit Voltage Out CMOS DAC Complete with Internal 10 V Reference
DAC8426AR 制造商:Rochester Electronics LLC 功能描述:- Bulk
DAC8426AR/883 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:8-Bit Digital-to-Analog Converter
DAC8426AR/883C 功能描述:數(shù)模轉(zhuǎn)換器- DAC COMPLETE QUAD 8-BIT DAC-LEV.B 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
DAC8426BR 制造商:Rochester Electronics LLC 功能描述:- Bulk
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠(chǎng)商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*