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參數(shù)資料
| 型號(hào)： | DAC811 |
| 英文描述： | Microprocessor-Compatible 12-BIT DIGITAL-TO-ANALOG CONVERTER |
| 中文描述： | 微處理器兼容的12位數(shù)字到模擬轉(zhuǎn)換器 |
| 文件頁數(shù)： | 6/9頁 |
| 文件大?。?/td> | 96K |
| 代理商： | DAC811 |
DAC811
6
±
12V OPERATION
The DAC811 is fully specified for operation on
±
12V power
supplies. However, in order for the output to swing to
±
10V,
the power supplies must be
±
13.5V or greater. When oper-
ating with
±
12VB supplies, the output swing should be
restricted to
±
8V in order to meet specifications.
LOGIC INPUT COMPATIBILITY
The DAC811 digital inputs are TTL, LSTTL, and 54/74HC
CMOS-compatible over the operating range of V
DD
. The
input switching threshold remains at the TLL threshold over
the supply range.
The logic input current over temperature is low enough to
permit driving the DAC811 directly from the outputs of
4000B and 54/74C CMOS devices.
Resistors of 47
should be placed in series with D0 through
D11, WR, N
A
, N
B
, N
C
and LDAC if edges are <10ns or if
the logic input is driven below ground by undershoot.
INSTALLATION
POWER SUPPLY CONNECTIONS
For optimum performance and noise rejection, power supply
decoupling capacitors should be added as shown in Figure 5.
These capacitors (1
μ
F tantalum recommended) should be
located close to the DAC811.
FIGURE 3. Relationship of Offset and Gain Adjustments
for a Unipolar D/A Converter.
FIGURE 4. Relationship of Offset and Gain Adjustments
for a Bipolar D/A Converter.
TABLE III. Digital Input/Analog Output.
ANALOG OUTPUT
DIGITAL INPUT
0 to +10V
±
5V
±
10V
111111111111
100000000000
011111111111
000000000000
LSB
+9.9976V
+5V
+4.9976V
0V
2.4mV
+4.9976V
0V
–0.0024V
–5V
2.44mV
+9.9951V
0V
–0.0049V
–10V
4.88mV
MSB
↓
LSB
↓
GAIN ADJUSTMENT
For either unipolar or bipolar configurations, apply the
digital input that should give the maximum positive voltage
output. Adjust the gain potentiometer for this positive full
scale voltage. See Table III for positive full scale voltages.
FIGURE 5. Power Supply, Gain, and Offset Potentiometer
Connections.
+ Full Scale
All Bits
Logic 0
1LSB
Range of
Offset Adj.
Offset Adjust Translates the Line
Digital Input
All Bits
Logic 1
Range of
Gain Adjust
A
Gain Adjust
Rotates the Line
F
+ Full Scale
All Bits
Logic 0
1LSB
Range of
Offset Adjust
Digital Input
All Bits
Logic 1
A
Full Scale
Range
Gain Adjust
Rotates the Line
– Full Scale
MSB on All
Others Off
Bipolar V
Offset
Range of
Gain Adjust
Offset Adj.
Translates
the Line
≈
±
0.4%
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
10k to
100k
DD
V
BPO
V
DD
Summing
Junction
V
ACOM
Gain Adjust
DCOM
+V
CC
–V
CC
OUT
1
μ
F
0.0022
μ
F
1
μ
F
3.9M
1
μ
F
–V
CC
+V
CC
+V
CC
10k to
100k
–V
CC
1M
Connect for
Bipolar Operation
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| DAC811AH | Microprocessor-Compatible 12-BIT DIGITAL-TO-ANALOG CONVERTER |
| DAC811BH | Microprocessor-Compatible 12-BIT DIGITAL-TO-ANALOG CONVERTER |
| DAC811JP | Microprocessor-Compatible 12-BIT DIGITAL-TO-ANALOG CONVERTER |
| DAC811JU | Microprocessor-Compatible 12-BIT DIGITAL-TO-ANALOG CONVERTER |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DAC811AH | 功能描述:數(shù)模轉(zhuǎn)換器- DAC Mcrprcsr-Compatible 12-Bit 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 |
| DAC811AH | 制造商:Texas Instruments 功能描述:D/A Converter (D-A) IC |
| DAC811BH | 功能描述:數(shù)模轉(zhuǎn)換器- DAC Mcrprcsr-Compatible 12-Bit 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 |
| DAC811JP | 功能描述:數(shù)模轉(zhuǎn)換器- DAC Mcrprcsr-Compatible 12-Bit 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 |
| DAC811JPG4 | 功能描述:數(shù)模轉(zhuǎn)換器- DAC Mcrprcsr-Compatible 12-Bit 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 |
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