參數(shù)資料
型號: DAC7734E
元件分類: 外設(shè)及接口
英文描述: Single Supply RS232C Line Driver/Receiver(?????μ?o?RS232C ?o?????????¨???2???2??????)
中文描述: 單電源RS232C接口線路驅(qū)動器/接收器(單電源RS232C接口線收發(fā)器(2發(fā)2收))
文件頁數(shù): 17/24頁
文件大?。?/td> 1309K
代理商: DAC7734E
17
DAC7734
FIGURE 3. Basic Dual-Supply Operation of the DAC7734.
ANALOG OUTPUTS
When V
SS
= –15V (dual supply operation), the output
amplifier can swing to within 4V of the supply rails, guar-
anteed over the –40
°
C to +85
°
C temperature range. When
V
SS
= 0V (single-supply operation), and with R
LOAD
also
connected to ground, the output can swing to ground. Care
must also be taken when measuring the zero-scale error
when V
SS
= 0V. Since the output voltage cannot swing
below ground, the output voltage may not change for the
first few digital input codes (0000
H
, 0001
H
, 0002
H
, etc.) if
the output amplifier has a negative offset. At the negative
limit of –5mV, the first specified output starts at code 0021
H
.
Due to the high accuracy of these D/A converters, system
design problems such as grounding and contact resistance
become very important. A 16-bit converter with a 10V full-
scale range has a 1LSB value of 152
μ
V. With a load current
of 1mA, series wiring and connector resistance of only
150m
(R
W2
) will cause a voltage drop of 150
μ
V, as shown
in Figure 4. To understand what this means in terms of a
system layout, the resistivity of a typical 1 ounce copper-
clad printed circuit board is 1/2 m
per square. For a 1mA
load, a 20 milli-inch wide printed circuit conductor 6 inches
long will result in a voltage drop of 150
μ
V.
The DAC7734 offers a force and sense output configuration
for the high open-loop gain output amplifier. This feature
allows the loop around the output amplifier to be closed at
the load (as shown in Figure 4), thus ensuring an accurate
output voltage.
FIGURE 4. Analog Output Closed-Loop Configuration
(1/2 DAC7734). R
W
represents wiring resis-
tances.
NC
NC
SDI
DGND
CLK
DGND
LDAC
DGND
LOAD
DGND
CS
DGND
SDO
DGND
RSTSEL
DGND
RST
DGND
NC
NC
DGND
DGND
V
DD
V
DD
V
OUT
A Sense
V
OUT
A
AGND
V
SS
V
REF
L AB Sense
V
REF
L AB
V
REF
H AB
V
REF
H AB Sense
V
OUT
B Sense
V
OUT
B
V
OUT
C Sense
V
OUT
C
V
REF
H CD Sense
V
REF
H CD
V
REF
L CD
V
REF
L CD Sense
V
OUT
D Sense
V
OUT
D
V
SS
V
SS
AGND
AGND
V
CC
V
CC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
DAC7734
Reset DAC Registers
Chips Select
Serial Data Out
Serial Data In
Clock
Load DAC Registers
Load
NC = No Connection
–10V to +10V
–10V to +10V
–10V to +10V
–10V to +10V
+10.000V
+10.000V
–10.000V
–10.000V
+5V
+15V
0.1
μ
F
1
μ
F
1
μ
F
+
0.1
μ
F
0.1
μ
F
1
μ
F
–15V
–15V
+5V
+
+
V
OUT
A Sense
V
OUT
A
AGND
V
SS
V
REF
L AB Sense
V
REF
L AB
V
REF
H AB
V
REF
H AB Sense
V
OUT
B Sense
V
OUT
B
48
47
46
45
44
43
42
41
40
39
DAC7734
R
W1
R
W2
+10V
+V
V
OUT
R
W1
R
W2
V
OUT
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DAC7734E 制造商:Texas Instruments 功能描述:16 BIT QUAD VOLTAGE OUTPUT DIGITAL/ANALO
DAC7734E 制造商:Texas Instruments 功能描述:16BIT DAC VOLT O/P QUAD SMD 7734
DAC7734E/1K 功能描述:數(shù)模轉(zhuǎn)換器- DAC 16-Bit Quad Voltage Output Serial Input 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
DAC7734E/1KG4 功能描述:數(shù)模轉(zhuǎn)換器- DAC 16-Bit Quad Voltage Output Serial Input 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
DAC7734EB 功能描述:數(shù)模轉(zhuǎn)換器- DAC 16-Bit Quad Voltage Output Serial Input 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