參數(shù)資料
型號(hào)： MAX5157BEEE
廠(chǎng)商： MAXIM INTEGRATED PRODUCTS INC
元件分類(lèi)： DAC
英文描述： Low-Power, Dual, 12-Bit Voltage-Output DACs with Configurable Outputs
中文描述： DUAL, SERIAL INPUT LOADING, 16 us SETTLING TIME, 12-BIT DAC, PDSO16
封裝： 0.150 INCH, 0.025 INCH PITCH, QSOP-16
文件頁(yè)數(shù)： 15/16頁(yè)
文件大小： 145K
代理商： MAX5157BEEE
Digital Calibration and
T hreshold S elec tion
Figure 13 shows the MAX5156/MAX5157 in a digital
calibration application. With a bright value applied to
the photodiode (on), the DAC is digitally ramped up
until it trips the comparator. The microprocessor stores
this high calibration value. Repeat the process with a
dim light (off) to obtain the dark current calibration. The
microprocessor then programs the DAC to set an out-
put voltage that is the midpoint of the two calibration
values. Applications include tachometers, motion sens-
ing, automatic readers, and liquid clarity analysis.
Digital Control of Gain and Offset
The two DACs can be used to control the offset and
gain for curve-fitting nonlinear functions, such as trans-
ducer linearization or analog compression/expansion
applications. The input signal is used as the reference
for the gain-adjust DAC, whose output is summed with
the output from the offset-adjust DAC. The relative
weight of each DAC output is adjusted by R1, R2, R3,
and R4 (Figure 14).
M
Low-Power, Dual, 12-Bit Voltage-Output DACs
with Configurable Outputs
______________________________________________________________________________________
15
AGND
DIN
μ
P
DGND
MAX5156
MAX5157
DAC _
REF_
OUT_
R
FB_
V+
V-
PHOTODIODE
V+
V
DD
V
OUT
+5V/+3V
Figure 13. Digital Calibration
AGND
DGND
REFA
C
S
REFB
MAX5156
MAX5157
DACA
+5V/+3V
V
DD
V
IN
CS
DIN
SCLK
CL
V
REF
R1
R3
R4
R2
OUT_B
FBB
FBA
OUT_A
V
OUT
DACB
=
NA IS THE NUMERIC VALUE OF THE INPUT CODE FOR DACA.
NB IS THE NUMERIC VALUE OF THE INPUT CODE FOR DACB.
R2
R1+R2
R4
R4
(
V
IN
)(
1+
) (
V
REF
)( )
[ ] [ ]
V
OUT
=
[
GAIN
]
-
[
OFFSET
]
Figure 14. Digital Control of Gain and Offset
相關(guān)PDF資料
PDF描述
MAX5158 Mono Class-AB Audio Amplifier with Stereo Headphone Drive--Separate Inputs 10-MSOP-PowerPAD -40 to 85
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX5157BEEE+ 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(lèi)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
MAX5157BEEE+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(lèi)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
MAX5157BEEE-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(lèi)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
MAX5157BEPE 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(lèi)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
MAX5157BEPE+ 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(lèi)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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