LTC2410CGN Linear Technology, LTC2410CGN Datasheet
LTC2410CGN
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LTC2410CGN Summary of contents
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... LTC2410. The DC common mode input rejection is better than 140dB. The LTC2410 communicates through a flexible 3-wire digital interface which 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 ...
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... REF = 5V, REF = GND 2.5V INCM – = GND 1.25V, (Note 6) INCM + – 5.5V, REF = 5V, REF = GND, – (Note 13 TOP VIEW ORDER PART NUMBER 16 GND LTC2410CGN 15 GND LTC2410IGN SCK 12 SDO GN PART MARKING GND 2410 9 GND 2410I GN PACKAGE = 125 C, = 110 C/W JA MIN TYP ...
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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 W U TYPICAL PERFOR A CE CHARACTERISTICS Total Unadjusted Error vs Temperature ( 5V) REF 1.5 1.0 0 REF = 5V –0.5 – ...
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W U TYPICAL PERFOR A CE CHARACTERISTICS Noise Histogram (Output Rate = 7.5Hz 5V 2.5V) CC REF 12 10,000 CONSECUTIVE GAUSSIAN READINGS DISTRIBUTION 0.033ppm 2.5V = 0.293ppm ...
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LTC2410 W U TYPICAL PERFOR A CE CHARACTERISTICS RMS Noise vs V INCM 850 825 800 775 REF = 5V 750 – REF = GND 725 REF + INCM ...
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W U TYPICAL PERFOR A CE CHARACTERISTICS + Full-Scale Error REF = 2.5V – REF = GND – 2.5V REF + IN = 1.25V – GND –2 F ...
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LTC2410 W U TYPICAL PERFOR A CE CHARACTERISTICS Conversion Current vs Temperature ( 220 F = GND GND SCK = NC 210 SDO = 5.5V CC 200 190 V = 4.1V CC ...
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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 Figure 7. External Serial Clock Operation (2-Wire) <t EOCtest CS TEST EOC BIT 31 SDO EOC Hi-Z Hi-Z SCK (INTERNAL) CONVERSION SLEEP W U ...
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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 When external amplifiers are driving the LTC2410, the ADC input referred system noise calculation can be simpli- fied by Figure 36. The noise of an amplifier driving the LTC2410 input pin can ...
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U U APPLICATIO S I FOR ATIO The combined normal mode rejection performance is shown in Figure 37 for the internal oscillator with 50Hz notch setting (F = HIGH) and in Figure 38 for the internal O oscillator with 60Hz ...
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LTC2410 U U APPLICATIO S I FOR ATIO Traditional high order delta-sigma modulators, while pro- viding very good linearity and resolution, suffer from po- tential instabilities at large input signal levels. The propri- etary architecture used for the LTC2410 third ...
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U U APPLICATIO S I FOR ATIO Simultaneous Sampling with Two LTC2410s One such application is synchronizing multiple LTC2410s, see Figure 45. The start of conversion is synchronized to the rising edge of CS. In order to synchronize multiple LTC2410s, ...
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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 mentation amplifier is used at low gain. If this amplifier is used at a gain of 10, the gain error is only 10ppm and input referred noise is reduced to 0.1 V ...
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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 51. 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 53 shows a similar scheme to ...
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U U APPLICATIO S I FOR ATIO 15V 2N3904 33 0 10V 350 BRIDGE –10V 33 Q2 2N3906 6 20 –15V 0 Figure 52. LTC1043 Provides Precise 4X Reference for Excitation Voltages W ...
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LTC2410 U U APPLICATIO S I FOR ATIO 2N3904 22 10V 350 BRIDGE TWO ELEMENTS VARYING 33 Q2, Q3 2N3906 Figure 53. Use Resistor Arrays to Provide Precise Matching in Excitation Amplifier TO OTHER DEVICES Figure 54. Use a Differential ...
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... Labview application software program (see Figure 58) which graphically captures the conversion results. It can be used to determine noise performance, stability and with an external source, linearity. As exemplified in the schematic, the LTC2410 is extremely easy to use. This demonstration board and associated software is available by contacting Linear Technology. 68HC11 13 SCK SCK (PD4) 12 ...
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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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... V JUMPER 0.1 F 35V REF – REF SCK SDO – GND IN 5 LTC2410CGN 15 GND 10 GND GND GND GND GND Figure 57. 24-Bit A/D Demo Board Schematic Figure 58. Display Graphic D1 BAV74LT1 OUT IN GND + C4 4 100 F 16V U3E U3F 74HC14 74HC14 R3 51k U3B U3A 74HC14 ...
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... PCB LAYOUT A D FIL Silkscreen Top 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. U Dimensions in inches (millimeters) unless otherwise noted ...
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... Simultaneous 50Hz/60Hz Rejection, 800nV ADC in SO-8 1.2ppm Noise, 8ppm INL, Pin Compatible with LTC2400 ADCs 1.2ppm Noise, 8ppm INL, Pin Compatible with LTC2404/LTC2408 Noise P-P Noise, 4ppm INL Noise RMS sn2410 2410fs LT/TP 1100 4K • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 2000 ...