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參數(shù)資料
| 型號(hào)： | MAX5121AEEE |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | DAC |
| 英文描述： | +3V/+5V, 12-Bit, Serial Voltage-Output DACs with Internal Reference |
| 中文描述： | SERIAL INPUT LOADING, 20 us SETTLING TIME, 12-BIT DAC, PDSO16 |
| 封裝： | 0.150 INCH, 0.025 INCH PITCH, QSOP-16 |
| 文件頁數(shù)： | 9/20頁 |
| 文件大?。?/td> | 288K |
| 代理商： | MAX5121AEEE |
M
+3V /+5V, 12-Bit, S erial Voltage-Output DACs
with Internal Referenc e
_______________________________________________________________________________________
9
_______________Detailed Desc ription
The MAX5120/MAX5121 12-bit, voltage-output DACs
are easily configured with a 3-wire serial interface. They
include a 16-bit data-in/data-out shift register and have
a double-buffered input consisting of an input register
and a DAC register. In addition, these devices employ
precision bandgap references and trimmed internal
resistors to produce a gain of 1.6384V/V, maximizing
the output voltage swing (Figure 1). The MAX5120/
MAX5121 output amplifier’s offset-adjust pin allows for
a DC shift in the DAC outputs. The full-scale output volt-
age is +4.095V for the MAX5120 and +2.0475V for the
MAX5121. These DACs are designed with an inverted
R-2R ladder network (Figure 2) that produces a weight-
ed output voltage proportional to the digital input code.
Internal Referenc e
Both the MAX5120 and MAX5121 use an on-board pre-
cision bandgap reference to generate an output volt-
age of +2.5V (MAX5120) or +1.25V (MAX5121). With a
low temperature coefficient of only 10ppm/°C (max),
the REF pin can source up to 100μA and may become
unstable with capacitive loads exceeding 100pF.
REFADJ can be used for minor adjustments (1%) to the
reference voltage. Use the circuits shown in Figure 3a
MAX5120
MAX5121
SR
CONTROL
16-BIT
SHIFT REGISTER
DECODE
CONTROL
INPUT
REGISTER
BANDGAP
REFERENCE
REFERENCE
BUFFER
DAC
REGISTER
DAC
2X
(1X)
DOUT
UPO
OUT
OS
R
0.6384R
GAIN = 1.6384X
4k
1.25V
AGND DGND
V
DD
DIN SCLK
CS
2.5V, (1.25V)
LOGIC
OUTPUT
CLR
PDL
RSTVAL
PD
12
REFADJ
REF
( ) FOR MAX5121 ONLY
Figure 1. Simplified Functional Diagram
OUT
OS
R
0.6384R
SHOWN FOR ALL 1s ON DAC
*INTERNAL 2.5V (MAX5120) AND 1.25V (MAX5121)
OR EXTERNAL REFERENCE.
D0
D9
D10
D11
2R
2R
2R
2R
2R
R
R
R
REF*
AGND
Figure 2. Simplified Inverted R-2R DAC Structure
相關(guān)PDF資料 |
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| MAX5120 | +3V/+5V, 12-Bit, Serial Voltage-Output DACs with Internal Reference |
| MAX5120-MAX5121 | +3V/+5V, 12-Bit, Serial Voltage-Output DACs with Internal Reference |
| MAX5120BEEE | +3V/+5V, 12-Bit, Serial Voltage-Output DACs with Internal Reference |
| MAX5121BEEE | +3V/+5V, 12-Bit, Serial Voltage-Output DACs with Internal Reference |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX5121AEEE+ | 功能描述:數(shù)模轉(zhuǎn)換器- DAC 12-Bit 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 |
| MAX5121AEEE+T | 功能描述:數(shù)模轉(zhuǎn)換器- DAC 12-Bit 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 |
| MAX5121AEEE-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 |
| MAX5121BEEE | 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 |
| MAX5121BEEE+ | 功能描述:數(shù)模轉(zhuǎn)換器- DAC 12-Bit 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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