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LMP91000 参数 Datasheet PDF下载

LMP91000图片预览
型号: LMP91000
PDF下载: 下载PDF文件 查看货源
内容描述: 传感器模拟前端系统:可配置AFE恒电位为低功耗化学传感应用 [Sensor AFE System: Configurable AFE Potentiostat for Low-Power Chemical Sensing Applications]
分类和应用: 传感器
文件页数/大小: 25 页 / 556 K
品牌: TI [ TEXAS INSTRUMENTS ]
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Symbol  
Parameter  
Conditions  
Min  
4.7  
Typ  
Max  
Units  
Bus free time between a STOP and START  
condition  
tBUF  
µs  
tVD;DAT  
tVD;ACK  
tSP  
Data valid time  
3.45  
3.45  
µs  
µs  
Data valid acknowledge time  
Pulse width of spikes that must be  
suppressed by the input filter(Note 14)  
50  
ns  
t_timeout SCL and SDA Timeout  
25  
100  
ms  
ns  
ns  
tEN;START  
tEN;STOP  
tEN;HIGH  
I2C Interface Enabling  
I2C Interface Disabling  
600  
600  
time between consecutive I2C interface  
enabling and disabling  
600  
ns  
Note 1: “Absolute Maximum Ratings” indicate limits beyond which damage to the device may occur, including inoperability and degradation of device reliability  
and/or performance. Functional operation of the device and/or non-degradation at the Absolute Maximum Ratings or other conditions beyond those indicated in  
the Operating Ratings is not implied. Operating Ratings indicate conditions at which the device is functional and the device should not be operated beyond such  
conditions.  
Note 2: Human Body Model, applicable std. MIL-STD-883, Method 3015.7. Machine Model, applicable std. JESD22-A115-A (ESD MM std. of JEDEC) Field-  
Induced Charge-Device Model, applicable std. JESD22-C101-C (ESD FICDM std. of JEDEC).  
Note 3: All non-power pins of this device are protected against ESD by snapback devices. Voltage at such pins will rise beyond absmax if current is forced into  
pin.  
Note 4: The maximum power dissipation is a function of TJ(MAX), θJA, and the ambient temperature, TA. The maximum allowable power dissipation at any ambient  
temperature is PDMAX = (TJ(MAX) - TA)/ θJA All numbers apply for packages soldered directly onto a PC board.  
Note 5: Electrical Table values apply only for factory testing conditions at the temperature indicated. Factory testing conditions result in very limited self-heating  
of the device such that TJ = TA. No guarantee of parametric performance is indicated in the electrical tables under conditions of internal self-heating where TJ >  
TA. Absolute Maximum Ratings indicate junction temperature limits beyond which the device may be permanently degraded, either mechanically or electrically.  
Note 6: Typical values represent the most likely parametric norm as determined at the time of characterization. Actual typical values may vary over time and will  
also depend on the application and configuration. The typical values are not tested and are not guaranteed on shipped production material.  
Note 7: Limits are 100% production tested at 25°C. Limits over the operating temperature range are guaranteed through correlations using statistical quality  
control (SQC) method.  
Note 8: Offset voltage temperature drift is determined by dividing the change in VOS at the temperature extremes by the total temperature change.  
Starting from the measured voltage offset at temperature T1 (VOS_RW(T1)), the voltage offset at temperature T2 (VOS_RW(T2)) is calculated according the following  
formula: VOS_RW(T2)=VOS_RW(T1)+ABS(T2–T1)* TcVOS_RW  
.
Note 9: At such currents no accuracy of the output voltage can be expected.  
Note 10: This parameter includes both A1 and TIA's noise contribution.  
Note 11: In case of external reference connected, the noise of the reference has to be added.  
Note 12: For negative bias polarity the Internal Zero is set at 67% VREF.  
Note 13: LMP91000 provides an internal 300ns minimum hold time to bridge the undefined region of the falling edge of SCL.  
Note 14: This parameter is guaranteed by design or characterization.  
Timing Diagram  
30132541  
FIGURE 1. I2C Interface Timing Diagram  
www.ti.com  
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