LTC2411IMS#TR Linear Technology, LTC2411IMS#TR Datasheet
LTC2411IMS#TR
Specifications of LTC2411IMS#TR
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LTC2411IMS#TR Summary of contents
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... LTC2411/LTC2411-1. The DC common mode input rejec- tion is better than 140dB. The LTC2411/LTC2411-1 communicate through a flexible 3-wire digital interface that is compatible with SPI and MICROWIRE , LTC and LT are registered trademarks of Linear Technology Corporation. No Latency MICROWIRE is a trademark of National Semiconductor Corporation INTERNAL OSC/50Hz REJECTION (LTC2411) ...
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LTC2411/LTC2411 ABSOLUTE AXI U RATI GS (Notes 1, 2) Supply Voltage ( GND .......................– 0. Analog Input Pins Voltage to GND .................................... – 0. Reference Input Pins Voltage to GND ...
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U CO VERTER CHARACTERISTICS temperature range, otherwise specifications are at T PARAMETER CONDITIONS Input Common Mode Rejection DC 2.5V REF GND IN Input Common Mode Rejection 2.5V REF 60Hz 2% (LTC2411) GND IN Input Common Mode Rejection 2.5V REF 50Hz ...
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LTC2411/LTC2411 DIGITAL I PUTS A D DIGITAL OUTPUTS operating temperature range, otherwise specifications are at T SYMBOL PARAMETER V High Level Input Voltage IH CS Low Level Input Voltage IL CS High ...
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CHARACTERISTICS range, otherwise specifications are SYMBOL PARAMETER f External Oscillator Frequency Range EOSC t External Oscillator High Period HEO t External Oscillator Low Period LEO t Conversion Time CONV f Internal SCK ...
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LTC2411/LTC2411 TYPICAL PERFOR A CE CHARACTERISTICS Total Unadjusted Error ( 5V) CC REF – –1 V ...
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W U TYPICAL PERFOR A CE CHARACTERISTICS RMS Noise vs V INCM 1. REF = GND O – 1.55 REF = GND 1.50 ...
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LTC2411/LTC2411 TYPICAL PERFOR A CE CHARACTERISTICS + Full-Scale Error vs Temperature 2. REF = 2.5V – REF = GND 1.25V – GND GND ...
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W U TYPICAL PERFOR A CE CHARACTERISTICS Conversion Current vs Temperature 240 F = GND GND 230 SCK = 5.5V SDO = NC 220 CC 210 200 190 V = ...
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LTC2411/LTC2411 CTIO S the Sleep mode and remains in this low power state as long HIGH. A LOW-to-HIGH transition on CS during the Data Output transfer aborts the data transfer and starts ...
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U U APPLICATIO S I FOR ATIO CONVERTER OPERATION Converter Operation Cycle The LTC2411/LTC2411-1 are low power, delta-sigma ana- log-to-digital converters with an easy-to-use 3-wire serial interface (see Figure 1). Their operation is made up of three states. The converter ...
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LTC2411/LTC2411 APPLICATIO S I FOR ATIO integrity of the conversion result and of the serial interface mode selection. (See the 2-wire I/O sections in the Serial Interface Timing Modes section.) When the V voltage rises above this critical ...
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U U APPLICATIO S I FOR ATIO above +FS. If both Bit 29 and Bit 28 are LOW, the differential input voltage is below –FS. The function of these bits is summarized in Table 1. Table 1. LTC2411/LTC2411-1 Status Bits ...
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LTC2411/LTC2411 APPLICATIO S I FOR ATIO + As long as the voltage on the IN and IN within the – 0. 0.3V) absolute maximum CC operating range, a conversion result is generated for any differential ...
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U U APPLICATIO S I FOR ATIO Table 3. LTC2411/LTC2411-1 State Duration State Operating Mode CONVERT Internal Oscillator External Oscillator SLEEP DATA OUTPUT Internal Serial Clock External Serial Clock with Frequency f kHz SCK converter status and during the data ...
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LTC2411/LTC2411 APPLICATIO S I FOR ATIO Table 4. LTC2411/LTC2411-1 Interface Timing Modes Configuration External SCK, Single Cycle Conversion External SCK, 2-Wire I/O Internal SCK, Single Cycle Conversion Internal SCK, 2-Wire I/O, Continuous Conversion CS TEST EOC TEST EOC ...
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U U APPLICATIO S I FOR ATIO device automatically enters the low power sleep state once the conversion is complete. When the device is in the sleep state (EOC = 0), its conversion result is held in an internal static ...
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LTC2411/LTC2411 APPLICATIO S I FOR ATIO Data is shifted out the SDO pin on each falling edge of SCK enabling external circuitry to latch data on the rising edge of SCK. EOC can be latched on the first ...
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U U APPLICATIO S I FOR ATIO In order to select the internal serial clock timing mode, the serial clock pin (SCK) must be floating (Hi-Z) or pulled HIGH prior to the falling edge of CS. The device will not ...
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LTC2411/LTC2411 APPLICATIO S I FOR ATIO aborts the data output state and immediately initiates a new conversion. This is useful for systems not requiring all 32 bits of output data, aborting an invalid conversion cycle, or synchronizing the ...
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U U APPLICATIO S I FOR ATIO The internal serial clock mode is selected at the end of the power-on reset (POR) cycle. The POR cycle is concluded approximately 1ms after V exceeds 1.9V. An internal CC weak pull-up is ...
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LTC2411/LTC2411 APPLICATIO S I FOR ATIO Particular attention must be given to the connection of the F signal when the LTC2411/LTC2411-1 are used with an O external conversion clock. This clock is active during the conversion time and ...
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U U APPLICATIO S I FOR ATIO (14.2 s) sampling period. Thus, for settling errors of less than 1ppm, the driving source impedance should be chosen such that 13 s/14 = 920ns (1.02 s). When an external ...
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LTC2411/LTC2411 APPLICATIO S I FOR ATIO Larger values of input capacitors (C required in certain configurations for antialiasing or gen- eral input signal filtering. Such capacitors will average the input sampling charge and the external source resistance will ...
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U U APPLICATIO S I FOR ATIO REF = 5V – REF = GND 30 + – INCM –10 F ...
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LTC2411/LTC2411 APPLICATIO S I FOR ATIO REF = 5V – REF = GND – 3.75V – 1.25V F = GND O – ...
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U U APPLICATIO S I FOR ATIO user is thus advised to minimize the combined source + impedance driving the REF and REF try to match it. The magnitude of the dynamic reference current depends upon the size of the ...
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LTC2411/LTC2411 APPLICATIO S I FOR ATIO 120 REF V = 2.5V 80 INCM EXT OSC –40 T ...
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U U APPLICATIO S I FOR ATIO REF 2.5V REF – REF = GND V = 2.5V INCM EXT OSC O ...
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LTC2411/LTC2411 APPLICATIO S I FOR ATIO internal calibration and filtering. The noise of the driving amplifier referred to the converter input and including all these effects can be calculated system noise (referred to the ...
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U U APPLICATIO S I FOR ATIO 0 –10 –20 –30 –40 –50 –60 –70 –80 –90 –100 –110 –120 INPUT SIGNAL FREQUENCY (Hz) Figure 32. Input Normal Mode ...
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LTC2411/LTC2411 APPLICATIO S I FOR ATIO 0 MEASURED DATA CALCULATED DATA –20 –40 – 60 –80 –100 –120 100 120 INPUT FREQUENCY (Hz) Figure 36. Input Normal Mode Rejection vs Input Frequency (LTC2411-1) ...
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U U APPLICATIO S I FOR ATIO Averaging 64 samples however reduces the noise level by a factor of eight, bringing the resolving power to 1 part in 40000, comparable to better weighing systems. Hyster- esis and creep effects in ...
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LTC2411/LTC2411 APPLICATIO S I FOR ATIO the sensor largely eliminates the need for protection devices, RFI suppression and wiring. The LTC2411/ LTC2411-1 exhibit extremely low temperature dependent drift result, exposure to external ambient tempera- ture ranges ...
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U U APPLICATIO S I FOR ATIO Note that this 4-amplifier topology has advantages over the typical integrated 3-amplifier instrumentation ampli- fier in that it does not have the high noise level common in the output stage that usually dominates ...
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LTC2411/LTC2411 APPLICATIO S I FOR ATIO bridge output can be eliminated completely; if the refer- ence arm of the bridge is used as the reference to the ADC, as shown in Figure 43. The LTC2411/LTC2411-1 can accept inputs ...
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U U APPLICATIO S I FOR ATIO 15V 2N3904 33 0 10V 350 BRIDGE –10V 2N3906 20 –15V 0 Figure 45. LTC1043 Provides Precise 4 Reference for Excitation Voltages W ...
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LTC2411/LTC2411 APPLICATIO S I FOR ATIO gain error or due to offset voltages offset voltage drift translates into 0.05ppm/ C gain error. Simpler alter- natives, with the amplifiers providing gain using resistor arrays for ...
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... INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...
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... Noise, 8ppm INL, Pin Compatible with LTC2400 ADC 1.2ppm Noise, Pin Compatible with LTC2404/LTC2408 www.linear.com 5V LT1236 0 LTC2411/ LTC2411 REF 3 – REF – IN RN1 GND 10k 6 RN1 IS CADDOCK T914 10K-010-02 Noise P-P Noise RMS 24111f LT/TP 0601 2K • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 2000 ...