參數(shù)資料
型號(hào)： DAC7734EB
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(dòng)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)： 18/24頁
文件大小： 1309K
代理商： DAC7734EB
18
DAC7734
REFERENCE INPUTS
The reference inputs, V
REF
L and V
REF
H, can be any voltage
between V
SS
+ 4V and V
CC
– 4V, provided that V
REF
H is at
least 1.25V greater than V
REF
L. The minimum output of
each DAC is equal to V
REF
L
plus a small offset voltage
(essentially, the offset of the output op amp). The maximum
output is equal to V
REF
H plus a similar offset voltage. Note
that V
SS
(the negative power supply) must either be
connected to ground or must be in the range of –14.25V to
–15.75V. The voltage on V
SS
sets several bias points within
the converter. If V
SS
is not in one of these two configura-
tions, the bias values may be in error and proper operation
of the device is not guaranteed.
The current into the V
REF
H input and out of V
REF
L depends
on the DAC output voltages, and can vary from a few
microamps to approximately 2.0mA. The reference input
appears as a varying load to the reference. The DAC7734
features a reference drive and sense connection such that the
internal errors caused by the changing reference current and
the circuit impedances can be minimized. Figures 5 through
9 show different reference configurations, and the effect on
the linearity and differential linearity.
The analog supplies have to come up first. If V
CC
and V
SS
don't come up together, then V
SS
should come up first. If the
power supplies for the reference come up first, then the V
CC
and V
SS
supplies will be “powered from the reference via the
ESD protection diode”, see page 4.
FIGURE 5. Dual Supply Configuration-Buffered References, used for Dual Supply Performance (1/2 DAC7734).
FIGURE 6. Single-Supply Buffered Reference with a Reference Low of 50mV used for Single-Supply Performance Curves
(1/2 DAC7734).
+10V
+V
–10V
–V
V
OUT
–15V
V
OUT
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
2200pF
100
1000pF
1000pF
2200pF
+V
OPA2234
–V
100
V
OUT
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
+10V
+V
OPA350
OPA227
99.5k
+0.050V
500
50
V
OUT
NOTE: V
REF
L has been chosen to be 50mV to allow for current sinking voltage drops across the 100
resistor and the output stage of the buffer op amp.
2200pF
100
1000pF
1000pF
2200pF
+V
100
相關(guān)PDF資料
PDF描述
DAC7734EC Single Supply RS232C Line Driver/Receiver(?????μ?o?RS232C ?o?????????¨???2???2??????)
DAC7741YB 16-Bit, Single Channel DIGITAL-TO-ANALOG CONVERTER With Internal Reference and Parallel Interface
DAC7741YC 16-Bit, Single Channel DIGITAL-TO-ANALOG CONVERTER With Internal Reference and Parallel Interface
DAC7741YL 16-Bit, Single Channel DIGITAL-TO-ANALOG CONVERTER With Internal Reference and Parallel Interface
DAC7741 Single Supply RS232C Line Driver/Receiver
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DAC7734EB/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(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
DAC7734EB/1KG4 功能描述:數(shù)模轉(zhuǎn)換器- DAC 16B Quad Vltg Output Serial Input 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(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
DAC7734EBG4 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(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
DAC7734EC 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(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
DAC7734EC 制造商:Texas Instruments 功能描述:16BIT DAC VOLT O/P QUAD SMD 7734
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