8- and 4-Channel, ±3 x VREF Multirange Inputs, Serial 14-Bit ADCs 26 Maxim Integrated B" />
參數(shù)資料
型號(hào)： MAX1033EUP+
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 19/32頁(yè)
文件大?。?/td> 0K
描述： IC ADC 14BIT SER 115KSPS 20TSSOP
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 74
位數(shù)： 14
采樣率（每秒）： 115k
數(shù)據(jù)接口： MICROWIRE?，串行，SPI?
轉(zhuǎn)換器數(shù)目： 1
功率耗散（最大）： 879mW
電壓電源： 模擬和數(shù)字
工作溫度： -40°C ~ 85°C
安裝類(lèi)型： 表面貼裝
封裝/外殼： 20-TSSOP（0.173"，4.40mm 寬）
供應(yīng)商設(shè)備封裝： 20-TSSOP
包裝： 管件
輸入數(shù)目和類(lèi)型： 4 個(gè)單端，單極；4 個(gè)單端，雙極；2 個(gè)差分，單極；2 個(gè)差分，雙極
MAX1032/MAX1033
8- and 4-Channel, ±3 x VREF
Multirange Inputs, Serial 14-Bit ADCs
26
Maxim Integrated
Bridge Application
The MAX1032/MAX1033 convert 1kHz signals more
accurately than a similar sigma-delta converter that
might be considered in bridge applications. The input
impedance of the MAX1032, in combination with the cur-
rent-limiting resistors, can affect the gain of the
MAX1032. In many applications this error is acceptable,
but for applications that cannot tolerate this error, the
MAX1032 inputs can be buffered (Figure 20). Connect
the bridge to a low-offset differential amplifier and then
the true-differential inputs of the MAX1032/MAX1033.
Larger excitation voltages take advantage of more of the
±3 x VREF/4 differential input voltage range. Select an
input voltage range that matches the amplifier output. Be
aware of the amplifier offset and offset-drift errors when
selecting an appropriate amplifier.
Dynamically Adjusting the Input Range
Software control of each channel’s analog input range
and the unipolar endpoint overlap specification make it
possible for the user to change the input range for a
channel dynamically and improve performance in some
applications. Changing the input range results in a
small LSB step-size over a wider output voltage range.
For example, by switching between a (-3 x VREF)/2 to
0V range and a 0V to (+3 x VREF)/2 range, an LSB is
but the input voltage range effectively spans from (-3 x
VREF)/2 to (+3 x VREF)/2, FSR = 3 x VREF).
Layout, Grounding, and Bypassing
Careful PC board layout is essential for best system per-
formance. Boards should have separate analog and digi-
tal ground planes and ensure that digital and analog
signals are separated from each other. Do not run analog
and digital (especially clock) lines parallel to one another,
or digital lines underneath the device package.
Figure 1 shows the recommended system ground con-
nections. Establish an analog ground point at AGND1
and a digital ground point at DGND. Connect all analog
grounds to the star analog ground. Connect the digital
grounds to the star digital ground. Connect the digital
ground plane to the analog ground plane at one point.
For lowest noise operation, make the ground return to
the star ground’s power-supply low impedance and as
short as possible.
High-frequency noise in the AVDD1 power supply
degrades the ADC’s high-speed comparator perfor-
mance. Bypass AVDD1 to AGND1 with a 0.1μF ceramic
surface-mount capacitor. Make bypass capacitor con-
nections as short as possible.
Parameter Definitions
Integral Nonlinearity (INL)
INL is the deviation of the values on an actual transfer
function from a straight line. This straight line is either a
best straight-line fit or a line drawn between the end-
points of the transfer function once offset and gain
errors have been nullified. The MAX1032/MAX1033 INL
is measured using the endpoint method.
()
,.
+×
×
32
16 384
4 096
VV
REF
REFCAP
AGND1
4.096V
BANDGAP
REFERENCE
5k
Ω
1x
SAR
ADC REF
4.096V
1.0
μF
VRCTH
MAX1032
MAX1033
AVDD1
MAX6341
V+
1.0
μF
OUT
GND
IN
Figure 18. External Reference Operation
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1033EUP+ 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 4Ch +/-12V Multi Inputs Serial 14-Bit RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類(lèi)型:Differential 信噪比:107 dB 接口類(lèi)型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
MAX1033EUP+T 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 4Ch +/-12V Multi Inputs Serial 14-Bit RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類(lèi)型:Differential 信噪比:107 dB 接口類(lèi)型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
MAX1034 制造商:MAXIM 制造商全稱(chēng):Maxim Integrated Products 功能描述:8-/4-Channel, 【VREF Multirange Inputs, Serial 14-Bit ADCs
MAX1034_12 制造商:MAXIM 制造商全稱(chēng):Maxim Integrated Products 功能描述:8-/4-Channel, ?±VREF Multirange Inputs,Serial 14-Bit ADCs
MAX1034BEUG+ 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 8-/4-Channel, Multirange Inputs, RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類(lèi)型:Differential 信噪比:107 dB 接口類(lèi)型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
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