參數(shù)資料
型號(hào)： MAX5721EUA
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： DAC
英文描述： 10-Bit, Low-Power, Dual, Voltage-Output DAC with Serial Interface
中文描述： SERIAL INPUT LOADING, 4 us SETTLING TIME, 10-BIT DAC, PDSO8
封裝： MO-187C-AA, MICRO MAX PACKAGE-8
文件頁(yè)數(shù)： 11/14頁(yè)
文件大?。?/td> 643K
代理商： MAX5721EUA
M
10-Bit, Low-Power, Dual, Voltage-Output
DAC with Serial Interface
______________________________________________________________________________________
11
CONTROL
C2
0
0
1
1
0
0
DATA BITS
D9
–
D0
X
X
X
X
X
X
C3
0
0
0
0
1
1
C1
0
0
0
0
0
0
C0
0
1
0
1
0
1
S1
–
S0
X
X
X
X
X
X
DAC
FUNCTION
A
B
A
B
A
B
Input register transparent, data shifted directly to DAC register, OUTA updated
Input register transparent, data shifted directly to DAC register, OUTB updated
Data shifted to input register, OUTA unchanged
Data shifted to input register, OUTB unchanged
Shift data from input register to DAC register, OUTA updated
Shift data from input register to DAC register, OUTB updated
1
1
0
0
X
X
A-B
Input registers transparent, data shifted directly to DAC registers, OUTA and
OUTB updated
1
1
1
1
0
1
1
0
X
X
X
X
A-B
A-B
Data shifted to input registers, OUTA and OUTB unchanged
Shift data from input registers to DAC registers, OUTA and OUTB updated
X = Don’t Care
Table 2. Serial-Interface Programming Commands
DAC_
REF
V
DD
OUT_
GND
IN
OUT
GND
MAX6050
MAX5721
+2.7V to +5.5V
Figure 3. Typical Operating Circuit, Unipolar Output
DAC_
MAX5721
REF
V-
V+
V
OUT
R1
R2
OUT_
R1 = R2
V
DD
GND
+2.7V to +5.5V
Figure 4. Bipolar Output Circuit
Applications Information
Unipolar Output
The typical application circuit (Figure 3) shows the
MAX5721 configured for a unipolar output, where the
output voltages and the reference inputs have the
same polarity. Table 3 lists the unipolar output codes.
Bipolar Output
The MAX5721 can be configured for bipolar operation
using a dual supply op amp (Figure 4). The transfer
function for bipolar operation is:
where DB is the decimal value of the DACs binary input
code. Table 4 shows digital codes (offset binary) and
corresponding output voltages for the circuit in Figure 4.
Power Supply and Layout Considerations
Careful PC board layout is important for optimal system
performance. To reduce noise injection and digital feed-
through, keep analog and digital signals separate.
Ensure that that the return path from GND to the supply
ground is short and low impedance. Use a ground
plane. Bypass V
DD
to GND with a 0.1μF capacitor as
close as possible to V
DD
.
V
V
2D
1024
OUT
REF
=
1
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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MAX5722AUA 功能描述:數(shù)模轉(zhuǎn)換器- 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
MAX5722AUA+ 功能描述:數(shù)模轉(zhuǎn)換器- DAC 12-Bit 2Ch Precision 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
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