LTC2410I LINER [Linear Technology], LTC2410I Datasheet
LTC2410I
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LTC2410I Summary of contents
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FEATURES Differential Input and Differential Reference with GND to V Common Mode Range CC 2ppm INL, No Missing Codes 2.5ppm Full-Scale Error 0.1ppm Offset 0.16ppm Noise Single Conversion Settling Time for Multiplexed Applications Internal Oscillator—No External Components Required 110dB Min, ...
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... GND .................................... – 0. Digital Input Voltage to GND ........ – 0. Digital Output Voltage to GND ..... – 0. Operating Temperature Range LTC2410C ............................................... LTC2410I ............................................ – Storage Temperature Range ................. – 150 C Lead Temperature (Soldering, 10 sec).................. 300 C ELECTRICAL CHARACTERISTICS temperature range, otherwise specifications are at T ...
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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% GND IN Input Common Mode Rejection 2.5V REF 50Hz 2% ...
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LTC2410 U U 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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LTC2410 CTIO S GND (Pins 10, 15, 16): Ground. Multiple ground pins internally connected for optimum ground current flow and V decoupling. Connect each one of CC these pins to a ...
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CTIO AL BLOCK DIAGRA V CC GND + + IN – – REF – REF – + DAC TEST CIRCUITS SDO 1.69k C Hi Hi-Z ...
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LTC2410 U U APPLICATIO S I FOR ATIO Once CS is pulled LOW, the device begins outputting the conversion result. There is no latency in the conversion result. The data output corresponds to the conversion just performed. This result is ...
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U U APPLICATIO S I FOR ATIO Input Voltage Range The analog input is truly differential with an absolute/ + common mode range for the IN extending from GND – 0. these limits the ESD protection devices begin ...
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LTC2410 U U APPLICATIO S I FOR ATIO on the rising edge of the 32nd SCK pulse. On the falling edge of the 32nd SCK pulse, SDO goes HIGH indicating the initiation of a new conversion cycle. This bit serves ...
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U U APPLICATIO S I FOR ATIO synchronized with an outside source, the LTC2410 can operate with an external conversion clock. The converter automatically detects the presence of an external clock signal at the F pin and turns off the ...
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LTC2410 U U APPLICATIO S I FOR ATIO Serial Clock Input/Output (SCK) The serial clock signal present on SCK (Pin 13) is used to synchronize the data transfer. Each bit of data is shifted out the SDO pin on the ...
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U U APPLICATIO S I FOR ATIO The serial clock mode is selected on the falling edge of CS. To select the external serial clock mode, the serial clock pin (SCK) must be LOW during each CS falling edge. The ...
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LTC2410 U U APPLICATIO S I FOR ATIO CS TEST EOC BIT 0 SDO EOC Hi-Z Hi-Z SCK (EXTERNAL) SLEEP CONVERSION DATA OUTPUT Figure 6. External Serial Clock, Reduced Data Output Length Since CS is tied LOW, the end-of-conversion (EOC) ...
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U U APPLICATIO S I FOR ATIO CS SDO SCK (EXTERNAL) CONVERSION SLEEP <t EOCtest CS TEST EOC BIT 31 SDO EOC Hi-Z Hi-Z SCK (INTERNAL) CONVERSION SLEEP W U 2. ...
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LTC2410 U U APPLICATIO S I FOR ATIO frequency f , then t is 3.6/f EOSC EOCtest HIGH before time t , the device remains in the sleep EOCtest state. The conversion result is held in the internal static shift ...
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U U APPLICATIO S I FOR ATIO A similar situation may occur during the sleep state when CS is pulsed HIGH-LOW-HIGH in order to test the conver- sion status. If the device is in the sleep state (EOC = 0), ...
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LTC2410 U U APPLICATIO S I FOR ATIO Internal Serial Clock, Autostart Conversion This timing mode is identical to the internal serial clock, 2-wire I/O described above with one additional feature. Instead of grounding CS, an external timing capacitor is ...
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U U APPLICATIO S I FOR ATIO 100 1 1000 CAPACITANCE ON CS (pF) Figure 12. CS Capacitance ...
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LTC2410 U U APPLICATIO S I FOR ATIO velocity is approximately 183ps/inch for internal traces and 170ps/inch for surface traces. Thus, a driver gener- ating a control signal with a minimum transition time of 1ns must be connected to the ...
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U U APPLICATIO S I FOR ATIO REF LEAK V + REF I LEAK LEAK LEAK – IN ...
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LTC2410 U U APPLICATIO S I FOR ATIO For relatively small values of input capacitance (C 0.01 F), the voltage on the sampling capacitor settles almost completely and relatively large values for the source impedance result in only small errors. ...
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U U APPLICATIO S I FOR ATIO 300 REF = 5V – REF = GND 240 + IN = 3.75V – 1.25V F = GND 180 ...
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LTC2410 U U APPLICATIO S I FOR ATIO + – REF and REF pins and external capacitance C nected to these pins are shown in Figures 22, 23, 24 and 25. In addition to this gain error, the converter INL ...
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U U APPLICATIO S I FOR ATIO 1000 12 SOURCE 9 R SOURCE – 100 SOURCE –6 –9 –12 –15 –0.5 –0.4–0.3–0.2–0.1 0 0.1 0.2 0.3 0.4 0 INDIF REFDIF ...
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LTC2410 U U APPLICATIO S I FOR ATIO ity. Typical measured performance curves for output data rates up to 100 readings per second are shown in Fig- ures 27, 28, 29, 30, 31, 32, 33 and 34. In order to ...
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U U APPLICATIO S I FOR ATIO REF = 5V – REF = GND 2.5V INCM ...
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LTC2410 U U APPLICATIO S I FOR ATIO Normal Mode Rejection and Antialiasing One of the advantages delta-sigma ADCs offer over con- ventional ADCs is on-chip digital filtering. Combined with a large oversampling ratio, the LTC2410 significantly simplifies antialiasing filter ...
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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 38. Input Normal Mode Rejection ...
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LTC2410 U U APPLICATIO S I FOR ATIO front of the LTC2410, the input dynamic current should be considered (see Input Current section). In cases where large effective RC time constants are used, an external buffer amplifier may be required ...
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U U APPLICATIO S I FOR ATIO SYNCHRONIZATION OF MULTIPLE LTC2410s Since the LTC2410’s absolute accuracy (total unadjusted error) is 5ppm, applications utilizing multiple synchro- nized ADCs are possible. Simultaneous Sampling with Two LTC2410s One such application is synchronizing multiple ...
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LTC2410 U U APPLICATIO S I FOR ATIO LTC2410 # REF SCK – REF SDO + IN – IN GND CONTROLLER SCK SDO CS1 CS2 CS3 CS4 CS1 CS2 CS3 CS4 31 OR LESS CLOCK PULSES SCK ...
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U U APPLICATIO S I FOR ATIO techniques is used to produce a precision divide operation on the reference signal. Another option is the use of a reference within the 5V input range of the LTC2410 and developing excitation via ...
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LTC2410 U U APPLICATIO S I FOR ATIO the output stage that usually dominates when an instru- mentation amplifier is used at low gain. If this amplifier is used at a gain of 10, the gain error is only 10ppm ...
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U U APPLICATIO S I FOR ATIO reference inputs do not have the same rejection. If 60Hz or other noise is present on the reference input, a low pass filter is recommended as shown in Figure 50. Note that you ...
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LTC2410 U U APPLICATIO S I FOR ATIO The error associated with the 10V excitation would be –80ppm. Hence, overall reference error could be as high as 130ppm, the average of the two. Figure 52 shows a similar scheme to ...
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U U APPLICATIO S I FOR ATIO 15V 2N3904 33 0 350 BRIDGE 33 Q2 2N3904 6 20 –15V 0 Figure 51. LTC1043 Provides Precise 3X Reference for Excitation Voltages W U 15V ...
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LTC2410 U U APPLICATIO S I FOR ATIO 2N3904 22 10V 350 BRIDGE TWO ELEMENTS VARYING 33 Q2, Q3 2N3904 Figure 52. Use Resistor Arrays to Provide Precise Matching in Excitation Amplifier TO OTHER DEVICES Figure 53. Use a Differential ...
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U TYPICAL APPLICATIO S Sample Driver for LTC2410 SPI Interface The LTC2410 has a very simple serial interface that makes interfacing to microprocessors and microcontrollers very easy. The listing in Figure simple assembler routine for the 68HC11 ...
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LTC2410 U TYPICAL APPLICATIO S ***************************************************** * This example program transfers the LTC2410's 32-bit output * conversion result into four consecutive 8-bit memory locations. * ***************************************************** *68HC11 register definition PORTD EQU $1008 Port D data register * " – , ...
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U TYPICAL APPLICATIO S ********************************** * The next short loop waits for the * * LTC2410's conversion to finish before * * starting the SPI data transfer * ********************************** * CONVEND LDAA PORTD Retrieve the contents of port D ANDA ...
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LTC2410 U TYPICAL APPLICATIO S V JP1 CC LT1460ACN8-2.5 JUMPER OUT 2 GND + 35V R2 3 JP3 JUMPER BANANA JACK ...
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PACKAGE DESCRIPTIO 0.015 0.004 (0.38 0.10) 0.007 – 0.0098 0 – 8 TYP (0.178 – 0.249) 0.016 – 0.050 (0.406 – 1.270) * DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE ** DIMENSION ...
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LTC2410 U W PCB LAYOUT A D FIL RELATED PARTS PART NUMBER DESCRIPTION LT1019 Precision Bandgap Reference, 2.5V, 5V LT1025 Micropower Therocouple Cold Junction Compensator LTC1043 Dual Precision Instrumentation Switched Capacitor Building Block LTC1050 Precision Chopper Stabilized Op Amp LT1236A-5 ...