參數(shù)資料
型號(hào)： MAX5115
廠商： Maxim Integrated Products, Inc.
英文描述： Nonvolatile, Quad, 8-Bit DACs with 2-Wire Serial Interface
中文描述： 非易失、四路、8位DAC，帶有2線串行接口
文件頁(yè)數(shù)： 17/19頁(yè)
文件大?。?/td> 459K
代理商： MAX5115
M
Nonvolatile, Quad, 8-Bit DACs with 2-Wire Serial
Interface
______________________________________________________________________________________
17
Applications Information
DAC Linearity and Offset Voltage
The output buffer can have a negative input offset volt-
age that would normally drive the output negative, but
with no negative supply, the output remains at GND
(Figure 10). Determine linearity using the end-point
method, measuring between code 10 (0A hex) and
code 240 (F0 hex) after calibrating the offset and gain
error (Figure 10).
External Voltage Reference
The MAX5115 features two reference inputs for each
DAC (REFH_ and REFL_). The MAX5116 uses a single
reference for all four DACs (REFH and REFL). REFH_
sets the full-scale voltage, while REFL_ sets the zero
code output. The MAX5115 has a 460k
typical input
impedance that is independent of the code. The
MAX5116 has a 115k
typical input impedance that is
independent of the code.
Power Sequencing
The voltage applied to REFH_ and REFL_ should not
exceed V
DD
at any time. If proper power sequencing is
not possible, connect an external Schottky diode
between REFH_, REFL_, and V
DD
to ensure compliance
with the absolute maximum ratings. Do not apply signals
to the digital inputs before the device is fully powered.
Power-Supply Bypassing and
Ground Management
Digital or AC transient signals on GND can create noise
at the analog output. Return GND to the highest-quality
ground available. Bypass V
DD
with a 0.1μF capacitor,
located as close to the device as possible. Bypass
REFH_ and REFL_ to GND with 0.1μF capacitors.
Careful PC board ground layout minimizes crosstalk
between the DAC outputs and digital inputs.
DAC
CODE
OUTPUT
VOLTAGE (V)
1111 1111
1000 0000
0000 0001
0000 0000
V
REFL_
Table 9. Unipolar Code Output Voltage
O
DAC CODE
NEGATIVE
OFFSET
OUTPUT
VOLTAGE
Figure 10. Effect of Negative Offset (Single Supply)
255
256
×
+
(
)
_
_
_
V
V
V
REFH
REFL
REFL
128
256
×
+
(
_
_
_
V
V
V
REFH
REFL
REFL
256
+
(
)
_
_
_
V
V
V
REFH
REFL
REFL
相關(guān)PDF資料
PDF描述
MAX5115EEP Nonvolatile, Quad, 8-Bit DACs with 2-Wire Serial Interface
MAX5116EEE Nonvolatile, Quad, 8-Bit DACs with 2-Wire Serial Interface
MAX5115-MAX5116 Nonvolatile, Quad, 8-Bit DACs with 2-Wire Serial Interface
MAX5116 Nonvolatile, Quad, 8-Bit DACs with 2-Wire Serial Interface
MAX5121 Evaluation Kit for the MAX2430[MAX2430EVKIT ]
相關(guān)代理商/技術(shù)參數(shù)
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MAX5115EEP 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
MAX5115EEP+ 功能描述:數(shù)模轉(zhuǎn)換器- DAC 8-Bit 4Ch 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
MAX5115EEP+T 功能描述:數(shù)模轉(zhuǎn)換器- DAC 8-Bit 4Ch 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
MAX5115EEP-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
MAX5115-MAX5116 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Nonvolatile, Quad, 8-Bit DACs with 2-Wire Serial Interface
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