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參數(shù)資料
| 型號： | DAC4814AP |
| 英文描述： | Quad 12-Bit Digital-to-Analog Converter Serial Interface |
| 中文描述： | 四路12位數(shù)字到模擬轉(zhuǎn)換器串行接口 |
| 文件頁數(shù)： | 10/12頁 |
| 文件大小： | 235K |
| 代理商： | DAC4814AP |
10
DAC4814
CMOS switches included in series with the ladder terminat-
ing resistor and the feedback resistor, R
FB
, compensate for
the temperature drift of the ladder switch ON resistance.
The output op amps are connected as transimpedance ampli-
fiers to convert the DAC-cell output current into an output
voltage. They have been specially designed and compen-
sated for precision and fast settling in this application.
POWER SUPPLY CONNECTIONS
The DAC4814 is specified for operation with power sup-
plies of V
L
= +5V and V
S
= either
±
12V or
±
15V. Even with
the V
S
supplies at
±
11.4V the DACs can swing a full
±
10V.
Power supply decoupling capacitors (1
μ
F tantalum) should
be located close to the DAC power supply connections.
Separate digital and analog ground pins are provided to
permit separate current returns. They should be connected
together at one point. Proper layout of the two current
returns will prevent digital logic switching currents from
degrading the analog output signal. The analog ground
current is code dependent so the impedance to the system
reference ground must be kept to a minimum. Connect
DACs as shown in Figure 2 or use a ground plane to keep
ground impedance less than 0.1
for less than 0.1LSB error.
–10V REFERENCE
An internal inverting amplifier (Gain = –1.0V/V) is
provided to invert the +10V reference. Connect +V
REF
Out
to Inv In for a –10V reference at Inv Out.
OUTPUT RANGE CONNECTIONS
±
10V Output Range
For a
±
10V bipolar output connect the DAC4814 as shown
in Figure 3. Connect the MODE to logic high (+5V) for reset
to bipolar zero. With MODE connected low (GND) reset
will be to –Full-Scale.
0 To +10V Output Range
For 0 to +10V unipolar outputs connect the DAC4814 as
shown in Figure 4. Connect the MODE to logic low (GND)
for reset to unipolar zero.
R
GND
DAC C
DAC D
DAC C
DAC D
R
GND
V D
V D
AGND
AGND
DAC4814
DAC4814
NOTE: Ideally R = 0
DAC A
DAC A
DAC B
DAC B
V C
V C
V B
V B
V A
V A
FIGURE 2. Recommended Ground Connections for Multiple DAC Packages.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DAC4814BP | Quad 12-Bit Digital-to-Analog Converter Serial Interface |
| DAC4815 | Quad 12-Bit Digital-to-Analog Converter 8-Bit Port Interface |
| DAC4815AP | Quad 12-Bit Digital-to-Analog Converter 8-Bit Port Interface |
| DAC4815BP | Quad 12-Bit Digital-to-Analog Converter 8-Bit Port Interface |
| DAC488HR | 16-bit D/A Converter with Digital I/O & IEEE 488 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DAC4814BP | 制造商:BB 制造商全稱:BB 功能描述:Quad 12-Bit Digital-to-Analog Converter Serial Interface |
| DAC4815 | 制造商:BB 制造商全稱:BB 功能描述:Quad 12-Bit Digital-to-Analog Converter 8-Bit Port Interface |
| DAC4815AP | 制造商:BB 制造商全稱:BB 功能描述:Quad 12-Bit Digital-to-Analog Converter 8-Bit Port Interface |
| DAC4815BP | 制造商:BB 制造商全稱:BB 功能描述:Quad 12-Bit Digital-to-Analog Converter 8-Bit Port Interface |
| DAC488HR | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:16-bit D/A Converter with Digital I/O & IEEE 488 |
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