參數(shù)資料
型號(hào)： MAX195BCPE+
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 26/28頁(yè)
文件大小： 0K
描述： IC ADC 16BIT 85KSPS SHTDN 16-DIP
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 25
位數(shù)： 16
采樣率（每秒）： 85k
數(shù)據(jù)接口： QSPI?，串行，SPI?
轉(zhuǎn)換器數(shù)目： 2
功率耗散（最大）： 80mW
電壓電源： 模擬和數(shù)字，雙 ±
工作溫度： 0°C ~ 70°C
安裝類(lèi)型： 通孔
封裝/外殼： 16-DIP（0.300"，7.62mm）
供應(yīng)商設(shè)備封裝： 16-PDIP
包裝： 管件
輸入數(shù)目和類(lèi)型： 1 個(gè)單端，單極；1 個(gè)單端，雙極
產(chǎn)品目錄頁(yè)面： 1393 (CN2011-ZH PDF)
If the power supplies do not settle within the MAX195’s
power-on delay (500ns minimum), power-up calibration
may begin with supply voltages that differ from the final
values and the converter may not be properly calibrat-
ed. If so, recalibrate the converter (pulse RESET low)
before use. For best DC accuracy, calibrate the
MAX195 any time there is a significant change in sup-
ply voltages, temperature, reference voltage, or clock
characteristics (see
External Clock section) because
these parameters affect the DC offset. If linearity is the
only concern, much larger changes in these parame-
ters can be tolerated.
Because the calibration data is stored digitally, there is
no need either to perform frequent conversions to main-
tain accuracy or to recalibrate if the MAX195 has been
held in shutdown for long periods. However, recalibra-
tion is recommended if it is likely that ambient tempera-
ture or supply voltages have significantly changed
since the previous calibration.
Digital Interface
The digital interface pins consist of BP/UP/SHDN, CLK,
SCLK, EOC, CS, CONV, and RESET.
BP/UP/SHDN is a three-level input. Leave it floating to
configure the MAX195’s analog input in bipolar mode
(AIN = -VREF to VREF) or connect it high for a unipolar
input (AIN = 0V to VREF). Bringing BP/UP/SHDN low
places the MAX195 in its 10A shutdown mode.
A logic low on RESET halts MAX195 operation. The ris-
ing edge of RESET initiates calibration as described in
the
Calibration section above.
Begin a conversion by bringing CONV low. After con-
version begins, additional convert start pulses are
ignored. The convert signal must be synchronized with
CLK. The falling edge of CONV must occur during the
period shown in Figures 3 and 4. When CLK is not
directly controlled by your processor, two methods of
ensuring synchronization are to drive CONV from EOC
(continuous conversions) or to gate the conversion-start
signal with the conversion clock so that CONV can go
low only while CLK is low (Figure 5). Ensure that the
maximum propagation delay through the gate is less
than 40ns.
The MAX195 automatically ensures four CLK periods
for track/hold acquisition. If, when CONV is asserted, at
least three clock (CLK) cycles have passed since the
end of the previous conversion, a conversion will begin
on CLK’s next falling edge and EOC will go high on the
following falling CLK edge (Figure 3). If, when convert
is asserted, less than three clock cycles have passed,
a conversion will begin on the fourth falling clock edge
MAX195
16-Bit, 85ksps ADC with 10A Shutdown
_______________________________________________________________________________________
7
TRACK/HOLD
CLK
CONVERSION
BEGINS
CONVERSION
ENDS
tAQ
*
* THE FALLING EDGE OF CONV MUST OCCUR IN THIS REGION
tCEL
tCW
tCEH
tCC2
tCC1
EOC
CONV
Figure 3. Initiating Conversions—At least 3 CLK cycles since end of previous conversion.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX195BCPE+ 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16-Bit 85ksps 5V Precision ADC 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
MAX195BCPE+T 制造商:Maxim Integrated Products 功能描述:16-BIT, 85KSPS ADC WITH 10UA SHUTDOWN - Tape and Reel
MAX195BCWE 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 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
MAX195BCWE+ 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16-Bit 85ksps 5V Precision ADC 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
MAX195BCWE+T 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16-Bit 85ksps 5V Precision ADC 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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