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參數(shù)資料
| 型號(hào)： | MAX5231AEEE |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | DAC |
| 英文描述： | 3V/5V, 12-Bit, Serial Voltage-Output Dual DACs with Internal Reference |
| 中文描述： | SERIAL INPUT LOADING, 10 us SETTLING TIME, 12-BIT DAC, PDSO16 |
| 封裝： | 0.150 INCH, 0.025 INCH PITCH, QSOP-16 |
| 文件頁(yè)數(shù)： | 11/18頁(yè) |
| 文件大?。?/td> | 974K |
| 代理商： | MAX5231AEEE |
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Detailed Description
The MAX5230/MAX5231 12-bit, voltage-output DACs
are easily configured with a 3-wire SPI-, QSPI-,
MICROWIRE-compatible serial interface. The devices
include a 16-bit data-in/data-out shift register and have
an input consisting of an input register and a DAC reg-
ister. In addition, these devices employ precision
trimmed internal resistors to produce a gain of
1.6384V/V, maximizing the output voltage swing, and a
programmable-shutdown output impedance of 1k
or
200k
The full-scale output voltage is 4.095V for the
MAX5231 and 2.0475V for the MAX5230. These
devices produce a weighted output voltage proportion-
al to the digital input code with an inverted Rail-to-Rail
ladder network (Figure 3).
Internal Reference
The MAX5230/MAX5231 use an on-board precision
bandgap reference to generate an output voltage of
1.234V (MAX5230) or 2.465V (MAX5231). With a low
temperature coefficient of only 3ppm/
°
C, REF can
source up to 100μA and is stable for capacitive loads
less than 35pF.
Output Amplifiers
The output amplifiers have internal resistors that pro-
vide for a gain of 1.6384V/V when OS_ is connected to
AGND. The output amplifiers have a typical slew rate of
0.6V/μs and settle to 1/2LSB within 10μs with a load of
5k
in parallel with 100pF. Use the serial interface to
set the shutdown output impedance of the amplifiers to
1k
or 200k
.
OS_ can be used to produce an offset voltage at the
output. For instance, to achieve a 1V offset, apply -1V
to OS_ to produce an output range from 1V to (1V +
V
FS
/V
REF
). Note that the DAC
’
s output range is still lim-
ited by the maximum output voltage specification.
M
3V/5V, 12-Bit, Serial Voltage-Output Dual DACs
with Internal Reference
______________________________________________________________________________________
11
CS
SCLK
DIN
DOUT
t
CSW
t
CS1
t
CSH
t
CSS
t
CSO
t
D02
t
CH
t
CL
t
CP
t
D01
t
DS
t
DH
t
LDL
LDAC
t
CSLD
Figure 2. Detailed Serial Interface Timing
OUT_
OS_
SHOWN FOR ALL ONES ON DAC
D11
D10
D9
D0
2R
121k
77.25k
1k
2R
2R
2R
2R
R
R
R
REF
AGND
Figure 3. Simplified DAC Circuit Diagram
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX5231AEEE+ | 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 |
| MAX5231AEEE+T | 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 |
| MAX5231AEEE-T | 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 |
| MAX5231BEEE | 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 |
| MAX5231BEEE+ | 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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