sx8724s Semtech Corporation, sx8724s Datasheet

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... ADVANCED COMMUNICATIONS & SENSING DESCRIPTION The SX8724S is a data acquisition system based on Semtech's low power ZoomingADC™ technology. It directly connects most types of miniature sensors with a general purpose microcontroller. With 3 differential inputs, it can adapt to multiple sensor systems. Its digital outputs are used to bias or reset the sensing elements ...

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... Continuous-Time vs. On-Request Conversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 7.7.8 Output Code Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 7.7.9 Power Saving Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 8 Application hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 8.1 Power Reduction 8.2 Gain Configuration Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 9 SPI interface 9.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 9.2 Data transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 9.2.1 Write a single register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Revision 1.0 February 2011 © Semtech . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Page 2 SX8724S ZoomingADC for sensing data acquisition www.semtech.com/products/ DATASHEET Page ...

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... ECHANICAL 14 PCB Layout Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 15 How to Evaluate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 16 Package Outline Drawing: MLPQ-W16-4x4-EP1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 17 Land Pattern Drawing: MLPQ-W16-4x4-EP1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 18 Tape and Reel Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 Revision 1.0 February 2011 © Semtech ZoomingADC for sensing data acquisition Page 3 SX8724S DATASHEET Page www.semtech.com/products/ ...

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... Latchup Revision 1.0 February 2011 © Semtech ZoomingADC for sensing data acquisition Symbol Condition V BATT T STORE T BIAS V All inputs INABS T PKG ESD Human Body Model ESD HBM Page 4 SX8724S DATASHEET Min Max Units V - 0.3 6 -55 150 °C -40 140 ° 300 V + 300 mV SS ...

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... Smax @25° < < Page 5 SX8724S DATASHEET = 250 kHz, PGA3 on with Gain = 1, S > 3V, Charge Pump is forced off. BATT Min Typ Max 2.4 5.5 -40 125 Min Typ Max 250 300 650 850 1000 ...

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... Step = 1/12 V/V GD OFF3 (see Table 12, page 22) Note 2 Z INADC Gain = 1. Note 3 Z INPGA1 Gain = 10. Note 3 Gain = 1. Note 3 Z INPGA2 Gain = 10. Note 3 Gain = 1. Note 3 Z INPGA3 Gain = 10. Note 3 Page 6 SX8724S DATASHEET Min Typ Max -100 100 1.19 1.22 1.25 -1.5 +1.5 1 Min Typ Max -2.42 +2.42 -24.2 +24.2 -2.42 +2.42 1/12 1000 1/12 127/12 ± ...

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... Note 15 BATT V = 5.5V/3.3V. Note 16 BATT V = 5.5V/3.3V. Note 17 BATT = 250 kHz, 4 for The effective output noise is reduced by the over-sampling ratio S ). OSR can be set between 8 and 1024, in powers ELCONV Page 7 SX8724S DATASHEET Min Typ Max 205 340 365 6 16 ± 0.15 ± 1 ± 0.6 ± ...

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... Bias currents in PGAs and ADC set to 1/4 of nominal values, i.e. IbAmpPga[1:0] = '00' , IbAmpAdc[1:0] = '00' . Revision 1.0 February 2011 © Semtech ZoomingADC for sensing data acquisition = (N (OSR + OSR can be set between 8 and 1024, in powers ELCONV S Page 8 SX8724S DATASHEET can be set to 1, ELCONV www.semtech.com ...

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... MSS SS STARTUP SEQUENCE t STARTUP t START_SPI t RCEN Self RC enabling calibration Figure 2. Slave Select pin and Power-On-Reset Timings Page 9 SX8724S ZoomingADC for sensing data acquisition Min Typ Max 1 100 250 section 9.4, page 42 SSS SS SX872xS SLAVE SLEEP WAKE-UP SEQUENCE ...

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... SCL t SCH SSSC t SSD t SSSC SCL t DV Figure 3. SPI timing diagram Page 10 SX8724S ZoomingADC for sensing data acquisition Min Typ Max 30 250 500 100 100 125 200 0 100 250 SCSS SCH t SSD DATASHEET Units ...

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... Lot numbers starting with the ‘E’ character are used for Engineering samples Revision 1.0 February 2011 © Semtech ZoomingADC for sensing data acquisition AC3 1 12 AC6 2 11 SX8724S (Top view) AC7 3 10 AC4 8724S YYWW XXXXX XXXXX Page 11 SX8724S DATASHEET D0 MISO/READY SS D1 www.semtech.com ...

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... Serial data in (Master Output, Slave Input) Serial clock from the Master. Charge pump output. Raises ADC supply above V Recommended range for capacitor is 1nF to 10 nF. Connect the capacitor to ground. Differential sensor input in conjunction with AC3 Page 12 SX8724S DATASHEET ) ) if V supply is too low. BATT BATT www ...

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... ADVANCED COMMUNICATIONS & SENSING 6 General Description The SX8724S is a complete low-power acquisition path with programmable gain, acquisition speed and resolution. 6.1 Bloc diagram SX8724S V REF AC2 AC3 AC4 AC5 AC6 AC7 D0/REF OUT D1/REF IN 6.2 VREF The internally generated trimmed bandgap reference with a nominal value of 1.22V that provides a stable REF voltage reference for the ZoomingADC ...

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... February 2011 © Semtech ZoomingADC for sensing data acquisition Figure 7, Figure 8, Figure 9 RegOut[ RegMode[1] V 1.22V BG Internal + 0 Bandgap - 1 reference RegMode [0] RegOut[ Figure 5. GPIO bloc diagram Page 14 SX8724S DATASHEET and Figure 10). Each port terminal can be RegOut[0] RegIn[0] V REF ZoomingADC RegOut [1] RegIn [1] www.semtech.com ...

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... ZoomingADC 1 RegMode[ GPIO 0 D1/VREF Figure 10 Reference Voltage Output and D1 is output before feeding back as V REF . Simply substitute the external value for 1. the ADC conversion calculations. Page 15 SX8724S ZoomingADC for sensing data acquisition 0 OUT 1 RegMode[ Internal + 0 Bandgap - 1 reference ...

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... During this time, the internal blocs using the RC can not be used: no ADC conversion can be started. Revision 1.0 February 2011 © Semtech ZoomingADC for sensing data acquisition voltage is greater than 3V then V BATT Page 16 SX8724S DATASHEET if BATT may BATT = V PUMP BATT. ...

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... Semtech ZoomingADC for sensing data acquisition ± ± Vin Vin S ± Voff PGA1 ANALOG ZOOM Figure 11. ZADC General Functional Block Diagram Page 17 SX8724S DATASHEET V D2 ± Vin ± Voff PGA2 PGA3 ) are available REF www.semtech.com V IN,ADC ± Vin ± ...

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... GDoff IN , ADC TOT IN TOT Equation 2 is the total magnitude of PGA offset and S is the sign of the offset (see OFFTOT much higher than the input signal's Nyquist rate (typically f S Page 18 SX8724S DATASHEET over-sampled ADC is related to input voltage V IN,ADC ⋅ REF www ...

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... Out[7:0] Note 1 Out[15:8] SetNelconv 01, Note 3 IbAmpPga 11, Note 8 Pga2Gain 00, Note 12 0001100, 0000000, 00000, Page 19 SX8724S Block ADC disabled ADC enabled PGA1 disabled PGA1 enabled PGA2 disabled PGA2 enabled PGA3 disabled PGA3 enabled 2 1 SetOsr Continuous 010, Note 4 0, Note 5 Enable 0000, ...

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... ELCONV BATT REF , respectively as: = − INP INN Equation 3 = − REF REFP REFN Equation 4 Page 20 SX8724S . To compensate for offsets, the input signal is chopped (3+SetOsr[2:0]) . OSR = 8, 16, 32, ..., 512, 1024 www.semtech.com DATASHEET ...

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... Vmux V REFP REF BATT REF BG REF,IN = ⋅ Equation 5 Page 21 SX8724S ZoomingADC for sensing data acquisition IN1 Amux V INP 01x00 AC1 AC2 01x01 01x10 AC4 01x11 AC6 11000 11001 11010 11011 AC0 11100 11101 11110 11111 ...

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... Table 12. PGA3 Gain and Offset Settings PGA3 Gain Pga3Offset bit field GD [V/V] (RegACCfg4[6:0 0000000 1/12 (=0.083) 0000001 Page 22 SX8724S DATASHEET [V/ Table 11. The V voltage at the output REF PGA2 offset GD [V/V] OFF2 0 +0.2 +0.4 +0.6 +0.8 ...

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... Pga3Offset bit field GD [V/V] (RegACCfg4[6:0]) 3 ... 6/12 0010000 ... 12/12 0100000 16/12 ... 0111111 32/12 1000000 ... 1000001 64/12 1000010 ... 127/12 (=10.58) 1010000 1100000 1111111 = ⋅ − ⋅ GDoff ADC Equation 7 V < BATT Equation 8 Page 23 SX8724S DATASHEET PGA3 Offset GD [V/V] OFF3 ... +16/12 ... ... 32/12 ... ... +63/12 (=+5.25) 0 -1/12 (=-0.083) -2/12 ... ... -16/12 ... ... -32/12 ... ... -63/12 (=-5.25) ⋅ REF www.semtech.com ...

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... GDoff IN , ADC TOT IN TOT Equation 10 = ⋅ TOT 3 2 Equation GDoff GDoff GD TOT 3 Equation 12 Page 24 SX8724S ZoomingADC for sensing data acquisition − ⎞ 1 ⎟ ⎠ OSR of the ADC is related to IN,ADC ⋅ ⋅ REF ⋅ ⋅ GDoff 3 2 DATASHEET www.semtech.com ...

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... ZoomingADC for sensing data acquisition elementary incremental conversions and a final quantization ELCONV = + T ( OSR ELCONV S Equation 13 Elementary Elementary Conversion Conversion 2 N ELCONV - + T CONV Figure 12. Analog-to-Digital Conversion Sequence Page 25 SX8724S DATASHEET Figure 12, a complete analog-to Elementary End Conversion -1 N ELCONV - www.semtech.com Conversion Result ...

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... Table 14. Over-sampling ratio settings SetOsr[2:0] Over-Sampling Ratio (RegACCfg[4:2]) 000 001 010 011 100 101 110 111 = SetNelconv : [ ELCONV Equation 15 Page 26 SX8724S DATASHEET [Hz] 62.5 kHz 125 kHz 250 kHz 500 kHz ] OSR [-] 128 256 512 1024 elementary incremental ELCONV Table 15) given by: − ...

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... OSR ) log ( Equation SetNelconv[1:0] 001 010 011 100 SetOsr[2:0] Figure 13. Resolution vs. SetOsr[2:0] and SetNelconv[2:0] Figure 13, resolution can be set between 6 and 16 bits. Notice that, Page 27 SX8724S ZoomingADC for sensing data acquisition [-] ) [ bit ] ELCONV 101 110 111 DATASHEET www.semtech.com ...

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... CONV ELCONV Equation 17 . For example, consider an over-sampling ratio of 256, 2 elementary conversions, CONV SetNelconv control bits N ELCONV ‘00‘ ‘01‘ 131 Page 28 SX8724S ELCONV ‘10‘ ‘11’ ...

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... Normalized Conversion Time – Tconv x fs [-] 1 conversion time for different SetNelconv[1: Page 29 SX8724S DATASHEET 1 ‘10‘ ‘11‘ 517 1033 1029 2057 2053 4105 4101 8201 10000 1000 www.semtech.com ...

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... GDoff TOT TOT ⎝ V REF Equation 19 Page 30 SX8724S ZoomingADC for sensing data acquisition Figure 16, the conversion time is also T Table 18). For input voltages outside the range, + OSR 1 ⋅ OSR ⎞ OSR 1 ⋅ ⎟ ⎟ ⋅ ...

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... SetNelconv = ‘01’ SetNelconv = ‘10’ 100000000 10000000 1000000 100000 10000 1000 100 Page 31 SX8724S DATASHEET 2 Hexadecimal Output Code 7FFF 7FFE ... 0001 0000 FFFF ... 8001 8000 1 SetNelconv = ‘11’ 1000000 10000 100 www.semtech.com ...

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... ADC REFP REFN 2 Equation 23 Table 20). If the system is idle, the PGAs and ADC can even be IbAmpPga [1:0] ADC Bias Current PGA Bias Current 1 ADC 1 ADC I ADC Page 32 SX8724S [ OSR ⋅ OSR 1 Max. fs [kHz] 125 250 500 1 125 ...

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... Use lower bias currents in the PGAs and the ADC using the control words IbAmpPga[1:0] and IbAmpAdc[1:0]. Reduce sampling frequency. Finally, remember that power reduction is typically traded off with reduced linearity, larger noise and slower maximum sampling speed. Revision 1.0 February 2011 © Semtech ZoomingADC for sensing data acquisition . BATT Page 33 SX8724S DATASHEET www.semtech.com ...

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... ZoomingADC for sensing data acquisition No Gain < 100 ? Yes Enable PGA2&3 Set PGA 2 gain Set PGA 3 gain GAIN = PGA2 x PGA3 End Figure 17. Gain configuration flowchart Page 34 SX8724S DATASHEET No Enable PGA1,2&3 Set PGA 1 gain Set PGA 2 gain Set PGA 3 gain GAIN = PGA1 x PGA2 x PGA3 www.semtech.com ...

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... MISO and MOSI lines are push-pull pads. As the waveforms illustrate (see below), the slave interface implements a 16-bit shift register. The SPI implemented on the SX8724S is set to the common setting CPOL=0 and CPHA=0 which means data are sampled on the rising edge of the clock, and shifted on the falling one. ...

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... Write + Register Address Figure 19. SPI waveform - Write a single register Read + Register Address Figure 20. SPI waveform - Read a single register Page 36 SX8724S ZoomingADC for sensing data acquisition Register Data ...

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... Register Data[address Register Data 1 Page 37 SX8724S ZoomingADC for sensing data acquisition Register Data[address+ ...

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... Reset Default SPI mode SAMPLE SHIFT mode COMBINED DATA READY with MISO mode Page 38 SX8724S ZoomingADC for sensing data acquisition 9.3.1. SAMPLE SHIFT Enable SAMPLE SHIFT 2 mode SampleShiftEn bit set to ‘1’ Enable COMBINED 3 DATA READY mode DataReadyEn set to 1 DATASHEET 9.2. Data Mode ...

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... NOP D13 D12 D11 D10 SCLK MOSI MISO SS1 READY1 SS2 READY2 Figure 25. Example with two SX872xS slaves Page 39 SX8724S ZoomingADC for sensing data acquisition Figure 24 below). (RegACOutLsb SCLK MOSI MISO SS SX872xS ...

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... Figure 26. Example of 4-wire Slave ADC sample MSB shifted out (RegACOutMsb NOP D14 D13 D12 D11 D10 D9 D8 Page 40 SX8724S ZoomingADC for sensing data acquisition SCLK MOSI MISO/READY SX872xS SS SLAVE ADC sample LSB shifted out (RegACOutLsb ...

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... In Combined Data Ready mode, MISO is set to high after the data reception. Revision 1.0 February 2011 © Semtech below). ADC sample LSB shifted out (RegACOutLsb NOP D11 D10 Page 41 SX8724S ZoomingADC for sensing data acquisition DATASHEET www.semtech.com ...

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... At power-up or after a soft reset, SS pin is set to output low during the chip initialization (~250us). If the host SS pin is configured at an input pulled high during the power-up sequence, it can detect the SX8724S effective start. Note that if the host pin has a default output high logical level during the power-up or reset sequences this output it will create a short circuit ...

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... R and C must be selected, and the transmission speed should be reduced. Revision 1.0 February 2011 © Semtech 100 SCLK 100 MOSI 100 MISO/READY 10K SS Page 43 SX8724S ZoomingADC for sensing data acquisition Figure 31. SCLK MOSI MISO/READY SX872xS SS SLAVE DATASHEET www.semtech.com ...

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... D0 and D1 pads data output and direction control 4 D0 and D1 pads input data SPI software reset 8 LSB of ADC result 8 MSB of ADC result 8 ADC conversion control 8 ADC conversion control 8 ADC conversion control 8 ADC conversion control 8 ADC conversion control 8 ADC conversion control 8 Chip operating mode register Page 44 SX8724S DATASHEET www.semtech.com ...

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... D1 pad output value. Only valid when D1Dir=1 and VrefD1In= See also Table 34, page D0 pad output value. Only valid when D0Dir=1 and VrefD1Out= See also Table 34, page Mode Reset Description r 0000 Reserved pad value pad value Page 45 SX8724S DATASHEET 48. 48. www.semtech.com ...

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... ADC samples can be read directly on the SPI rw 0 See section 9.3.1, page Mode Reset Description rw 11 Bias current selection for the ADC rw 11 Bias current selection for the PGA rw 0 PGA3 enable rw 0 PGA2 enable rw 0 PGA1 enable rw 0 ADC enable Page 46 SX8724S DATASHEET SetNelconv . 39. www.semtech.com 3+SetOsr . ...

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... See section 9.3.2, page rw 0000000 PGA3 offset selection Mode Reset Description r 0 ADC activity flag rw 0 Selects ADC and PGA default configuration, starts an ADC conversion rw 00000 Input channel configuration selector Reference channel selector BATT REF Page 47 SX8724S DATASHEET 39. www.semtech.com ...

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... Force charge pump Off Enable V output on D0 pin REF rw 0 Enable external V supply is below 3V or Off when V BATT Page 48 SX8724S Note 1 /2 rate ELCONV rate ELCONV Note 2 Note pin REF supply is above 3V. Enabling the charge BATT www.semtech.com DATASHEET ...

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... ZoomingADC bloc are provided in Table 35. Capacitor values Acquisition Chain Stage PGA1 PGA2 PGA3 ADC Revision 1.0 February 2011 © Semtech ZoomingADC for sensing data acquisition 1 ≥ Ω ⋅ gain Cp Equation 24 Table 35: Gain capacitor Cg 0.45 0.54 0.775 2.67 Page 49 SX8724S DATASHEET Equation 24. Parasitic capacitor Cp Units 1.04 pF 1 www.semtech.com ...

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... ZoomingADC for sensing data acquisition PGA2 gain 2.59 7.95 5.05 2.84 2.24 1.30 3.99 2.54 1.44 1.11 0.65 1.98 1.26 0.71 0.56 0.32 0.99 0.63 0.36 0. Figure 32. The Switched Capacitor Principle − Equation 25 with a capacitor switched at frequency f is − ⋅ Equation 26 Page 50 SX8724S PGA3 gain 6.25 4.32 2.86 1.87 3.13 2.16 1.43 0.94 1.56 1.08 0.72 0.47 0.78 0.54 0.36 0. www.semtech.com DATASHEET 10 1.63 0.82 0.41 0.21 ...

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... One can increase the effective input impedance of the ZoomingADC by having a source with a high electrical bandwidth (sensor electri- cal bandwidth much higher than fs). Revision 1.0 February 2011 © Semtech ZoomingADC for sensing data acquisition Current integration Sensor ZoomingADC (model) impedence Sensor Node C Capacitance Figure 33. The Switched Capacitor Principle Page 51 SX8724S DATASHEET www.semtech.com ...

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... For s = ------------------------------------ - ⋅ OSR N ELCONV Equation 27 ELCONV Table 37. 50/60 Hz Line Rejection Examples f [Hz] fs [kHz] NOTCH 61 125 61 250 61 500 53 62.5 46 62.5 46 125 Page 52 SX8724S ZoomingADC for sensing data acquisition 1 2 … – 1 ELCONV . OSR [-] N [-] ELCONV 1024 2 1024 4 1024 8 1024 8 1024 4 1024 8 DATASHEET ...

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... Page 53 SX8724S DATASHEET Filter profile with NELCONV = Normalized frequency - f x Tconv Filter profile with NELCONV = Normalized frequency - f x Tconv Filter Profile w ith Data Rate = 46SPS or 53SPS Frequency [Hz] ELCONV www ...

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... ZoomingADC for sensing data acquisition 10 INL Gain 1 @ 25° -10 0 INL Gain 1 @ 125° -10 0 Page 54 SX8724S DATASHEET -1.5 -1 -0.5 0 0.5 V [V] IN Figure 36. INL 25°C -1.5 -1 -0.5 0 0.5 V [V] IN Figure 38. INL 125°C www.semtech.com 1 1 1.5 2 ...

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... GD =10; OSR=1024; Nelconv=8; fs=250kHz INL Gain 100 @ 25° -10 -20 -30 -40 -50 0.005 0.01 0.015 0.02 -0.02 Page 55 SX8724S DATASHEET -0.15 -0.1 -0.05 0 0.05 V [V] IN Figure 40. INL 25°C -0.15 -0.1 -0.05 0 0.05 V [V] IN Figure 42. INL 125°C -0.015 -0.01 -0.005 0 0.005 0.01 V [V] IN www.semtech.com 0.1 0.15 0.2 0.1 0.15 0.2 0.015 ...

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... Page 56 SX8724S DATASHEET Figure 44. INL 25°C -0.015 -0.01 -0.005 0 0.005 V [V] IN Figure 46. INL 125°C =10, GD =10; OSR=1024 ELCONV INL Gain 1000 @ 25°C -0.0015 -0.001 -0 ...

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... The extracted RMS output noise of PGA1, 2, and 3 are given in output rms noise voltage. Revision 1.0 February 2011 © Semtech ZoomingADC for sensing data acquisition should result in a constant output code. However, because of circuit noise, the IN Table 38, page Page 57 SX8724S DATASHEET Figure 51 59: standard output deviation and www.semtech.com shows ...

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... REFN , ⎠ ⎝ ⎠ ⎝ TOT ( ⋅ OSR N ELCONV Equation 28 Page 58 SX8724S ZoomingADC for sensing data acquisition ± Vin Vin ± Voff Voff PGA2 PGA3 OFF2 OFF3 , GD , and GD ...

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... Vin Vin S ± Voff PGA1 V REF,ADC Figure 54. Total Input Referred Noise = 10 ( PGA3 bypassed), OSR = 512 PGA1 is dominant over that of PGA2. Using N1 Page 59 SX8724S DATASHEET (increases the ADC averaging effect, ELCONV = 5V) ELCONV REF PGA2 PGA3 V = 340 V = 365 N2 N3 ...

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... Figure 55. Gain Error vs. Temperature for Different Gains Revision 1.0 February 2011 © Semtech > 1. ELCONV 100 100 Figure 56. Offset Error vs. Temperature for Different Gains Page 60 SX8724S ZoomingADC for sensing data acquisition Equation 19, page Figure 56. The output offset NORMALIZED TO 25° C 100 -20 -40 -50 -25 ...

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... Ibias = 0.25 250Khz, Ibias = 0.5 900 500Khz, Ibias = 1 800 700 600 500 400 300 200 2.0 2.5 3.0 3.5 4.0 V [V] BATT Page 61 SX8724S ZoomingADC for sensing data acquisition is below 3V. Figure 57 BATT < 4.2V and forced OFF for V BATT 4.5 5 5.5 Figure 58, IbAmpPga/Adc = '11' , '10' , < 4.2V and forced OFF BATT 4.5 5.0 5.5 DATASHEET plots the > ...

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... February 2011 © Semtech ZoomingADC for sensing data acquisition Figure 59, showing the increase between -40 and +125°C. Vbatt = 2.4v Vbatt = 3.5v Vbatt = 5.5v - Temperature [°C] PGA1 PGA2 103 67 Page 62 SX8724S DATASHEET 80 100 120 PGA3 Total 78 406 91 516 98 606 www.semtech.com Unit uA ...

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... Vref OUT I2C addr, Digital I2C addr, Digital IO or Vref Vref IN Digital IO N.A. Digital IO N. Page 63 SX8724S DATASHEET SX8723S SX8724S MLPQ-16 4x4 MLPQ-16 4x4 SPI SPI Digital IO or Vref Digital IO or Vref OUT OUT Digital IO or Vref Digital IO or Vref OUT. IN N.A. N.A. ...

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... AC3 N. MISO/READY SX8723S (Top view) N. AC4 AC3 AC6 2 11 MISO/READY SX8724S (Top view) AC7 AC4 AC3 N. MISO/READY SX8725S (Top view ...

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... For evaluation purposes SX8724SEVK evaluation kit can be ordered. This kit connects to any PC using a USB port. A software gives the user the ability to control the SX8724S registers as well as getting the raw data from the ZoomingADC and displaying it on the "Graphical User Interface". For more information please look at SEMTECH web site (http://www ...

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... CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). 2. COPLANARITY APPLIES TO THE EXPOSED PAD AS WELL AS THE TERMINALS. Revision 1.0 February 2011 © Semtech LxN E bxN bbb D/2 Figure 60. Package Outline Drawing Page 66 SX8724S ZoomingADC for sensing data acquisition DIMENSIONS MILLIMETERS DIM MIN NOM - A 0. 0.00 - (0.20 0.25 0.30 D 3.90 4. ...

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... SQUARE PACKAGE - DIMENSIONS APPLY IN BOTH " X " AND " Y " DIRECTIONS. Revision 1.0 February 2011 © Semtech ZoomingADC for sensing data acquisition K DIM Figure 61. Land Pattern Drawing Page 67 SX8724S DATASHEET DIMENSIONS INCHES MILLIMETERS (.156) (3.95) .122 3.10 .106 2.70 .106 2.70 .026 0.65 .016 0.40 .033 0.85 .189 4.80 ...

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... Revision 1.0 February 2011 © Semtech ZoomingADC for sensing data acquisition Figure 62. Direction of Feed Figure 63. User direction of feed Reel Size 4.35 4.35 1.10 7/13 Page 68 SX8724S MLP (rectangular) Direction of Feed Reel Reel Trailer Leader (in) Width Length (mm) Length (mm) 12.4 400 www.semtech.com DATASHEET QTY per Reel ...

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... Semtech Ltd., Units 2 & 3, Park Court, Premier Way, Abbey Park Industrial Estate, Romsey, Hampshire, SO51 9DN. EUROPE Tel: +44 (0)1794 527 600 Fax: +44 (0)1794 527 601 Revision 1.0 February 2011 © Semtech ZoomingADC for sensing data acquisition Page 69 SX8724S DATASHEET ISO9001 CERTIFIED www.semtech.com ...