MCP3426A0-E/MS Microchip Technology, MCP3426A0-E/MS Datasheet
MCP3426A0-E/MS
Specifications of MCP3426A0-E/MS
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MCP3426A0-E/MS Summary of contents
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... Bit Delta-Sigma Analog-to-Digital (ΔΣ A/D) Con- verter family members of the MCP342X series from to REF Microchip Technology Inc. These devices can convert analog inputs to digital codes with bits of reso- lution. The MCP3426 and MCP3427 devices have two ): differential input channels and the MCP3428 has four differential input channels ...
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... CH1- Adr0 SCL SDA CH2 CH2- DD Table 3- Voltage Reference (2.048V) V REF 2 ΔΣ ADC I PGA Converter Interface Clock Oscillator SOIC, TSSOP 1 14 CH1+ CH4- CH1 CH4 CH2+ CH3 CH2- CH3 Adr1 Adr0 SDA SCL SCL C SDA © 2009 Microchip Technology Inc. ...
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... MCP3427 Functional Block Diagram MCP3427 CH1+ CH1- CH2+ CH2- Gain = MCP3428 Functional Block Diagram CH1+ CH1- CH2+ CH2- CH3+ CH3- Gain = CH4+ CH4- © 2009 Microchip Technology Inc Voltage Reference (2.048V) V REF ΔΣ ADC PGA Converter Interface Clock Oscillator MCP3428 Voltage Reference (2 ...
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... MCP3426/7/8 NOTES: DS22226A-page 4 © 2009 Microchip Technology Inc. ...
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... Addr_Float voltage is applied at address pin. 10: No voltage is applied at address pin (left “floating”). © 2009 Microchip Technology Inc. †Notice: Stresses above those listed under “Maximum Rat- ings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operational listings of this specification is not implied ...
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... IH µ GND IL V The device reads logic low. V The device reads logic high. V Read pin voltage if voltage is applied to the address pin. (Note 9) Device outputs float output voltage (V /2) on the address DD pin, if left “floating”. (Note 10 © 2009 Microchip Technology Inc. ...
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... Storage Temperature Range Thermal Package Resistances Thermal Resistance, 8L-DFN (2x3) Thermal Resistance, 8L-MSOP Thermal Resistance, 8L-SOIC Thermal Resistance, 10L-DFN (3x3) Thermal Resistance, 10L-MSOP Thermal Resistance, 14L-SOIC Thermal Resistance, 14L-TSSOP © 2009 Microchip Technology Inc -40°C to +125° +5.0V Sym Min Typ ...
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... MCP3426/7/8 NOTES: DS22226A-page 8 © 2009 Microchip Technology Inc. ...
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... FIGURE 2-2: INL vs. Temperature PGA = 4 10 PGA = -10 -15 PGA = 2 -20 PGA = 1 -25 -40 - 100 120 140 o Temperature ( C) FIGURE 2-3: Offset Error vs. Temperature. © 2009 Microchip Technology Inc. = +5.0V 0V, CHn+ = CHn PGA = 5.5 -100 FIGURE 2-4: Voltage. 2 1.5 1 0.5 0 PGA = 4 -0.5 -1 -1.5 -2 -100 -75 FIGURE 2-5: 0 ...
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... FIGURE 2-10: Temperature. 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 V = 2.7V -110 DD -120 0.1 FIGURE 2-11: /2, REF 100 120 140 Temperature (°C) Oscillator Drift vs. Data Rate = 15 SPS 1k 10k 1 10 100 1000 10000 Input Signal Frequency (Hz) Frequency Response. © 2009 Microchip Technology Inc. ...
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... C is the package pin capacitance and PIN typically about 4 pF. D and D are the ESD diodes the differential input sampling capacitor. SAMPLE © 2009 Microchip Technology Inc. Table 3-1. MCP3428 Sym SOIC, TSSOP 1 CH1+ Positive Differential Analog Input Pin of Channel 1 2 CH1- ...
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... There is an internal electrical connection between the Exposed Thermal Pad (EP) and the V be connected to the same potential on the Printed Circuit Board (PCB). Sampling Switch SAMPLE (3.2 pF interface. The SDA line to the SDA pin Serial Communications” Serial Interface communication. pin; they must SS © 2009 Microchip Technology Inc. ...
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... A 0.1 µF decoupling capacitor should be mounted as close as possible to the V for additional transient immunity. © 2009 Microchip Technology Inc. The threshold voltage is set at 2.2V with a tolerance of approximately ±5%. If the supply voltage falls below this threshold, the device will be held in a reset condition ...
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... Self-Calibration The device performs a self-calibration of offset and gain for each conversion. This provides reliable conversion results from conversion-to-conversion over variations in temperature as well as power supply fluctuations. Ω Z (f) = 2.25 M /PGA IN 2-11) may not give enough © 2009 Microchip Technology Inc. ...
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... N = Resolution, which is programmed in the Configuration Register: 12, 14, or 16. © 2009 Microchip Technology Inc. Table 4-1 shows the LSB size of each conversion rate setting. The measured unknown input voltage is obtained by multiplying the output codes with LSB. See the following section for the input voltage calculation using the output codes ...
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... PGA = - 62.5 (μV)for PGA = 1 1 -(0+0+0+0+0+0+0+0+0+0+0+0+0+2 PGA = - 125 (μV)for PGA = -(2 +0+0+0+0+0+0+0+0+0+0+0+0+0+0) x LSB(62.5μV)/ PGA = - 2.048 (V) for PGA = -(2 +0+0+0+0+0+0+0+0+0+0+0+0+0+0) x LSB(62.5μV)/ PGA = - 2.048 (V) for PGA = 1 © 2009 Microchip Technology Inc. LSB • ----------- - PGA LSB • ----------- - PGA See Table 4-1 1’s complement + ...
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... RDY bit = 1 means the conversion result is not updated since the last reading. A new conversion is under processing and the RDY bit will be cleared when the new conversion result is ready. © 2009 Microchip Technology Inc. 5.1.2 ONE-SHOT CONVERSION MODE (O/C BIT = Once the One-Shot Conversion (single conversion) ...
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... The user can rewrite the configuration byte any time during the device operation. Register 5-1 shows the configuration register bits. R/W-1 R/W-0 R/W-0 O Unimplemented bit, read as ‘0’ ‘0’ = Bit is cleared R/W-0 R/W bit Bit is unknown © 2009 Microchip Technology Inc. ...
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... Continuous Conversion mode was already read. The next new conversion data is not ready. The RDY bit stays high until a new conversion is completed. © 2009 Microchip Technology Inc Serial Communications The device (microcontroller) through a serial I Circuit) interface and support standard (100 kbits/sec), fast (400 kbits/sec) and high-speed (3 ...
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... The device latches the floating condition immediately after the General Call Latch command Table 5-3 Float waveform (output) at address pin SCL SDA FIGURE 5-2: Command and Voltage Output at Address Pin Left “Floating” (MCP3427 and MCP3428). General Call Latch © 2009 Microchip Technology Inc. ...
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... See Figure 5-1 for details in Address Byte. FIGURE 5-3: Timing Diagram For Writing To The MCP3426/7/8. © 2009 Microchip Technology Inc. 5.3.3 WRITING A CONFIGURATION BYTE TO THE DEVICE When the Master sends an address byte with the R/W bit low (R/W = 0), the device expects one configuration byte following the address ...
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... RDY bit condition.The Master may continuously send clock (SCL) to repeatedly read the configuration byte (to check the RDY bit status). Figure 5-4 shows the timing diagram for reading the ADC conversion data. Table 5-4 Digital Output Codes © 2009 Microchip Technology Inc. ...
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... FIGURE 5-4: Timing Diagram For Reading From The MCP3426/7/8 With 12-Bit to 16-Bit Modes. © 2009 Microchip Technology Inc. MCP3426/7/8 DS22226A-page 23 ...
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... HIGH period of the clock signal. The data on the line must be changed during the LOW period of the clock signal. There is one clock pulse per bit of data. Each data transfer is initiated with a START condition and terminated with a STOP condition specification. 5-6. © 2009 Microchip Technology Inc. ...
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... SDA START CONDITION FIGURE 5-6: Data Transfer Sequence on I © 2009 Microchip Technology Inc. During reads, the Master (microcontroller) can terminate the current read operation by not providing an acknowledge bit (not Acknowledge (NAK)) on the last byte. In this case, the MCP3426/7/8 devices release ...
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... V (Note From (Note After this period, the first clock pulse is generated ns Only relevant for repeated Start condition ns (Note (Note 2, Note 3) ns Time between START and STOP conditions. ns SDA and SCL pins (Note HD:DAT ) or SU:DAT parameter. AA © 2009 Microchip Technology Inc. ...
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... Clock Low time (T ) can be affected. LOW For Data Output: This parameter is characterized, and tested indirectly by testing T 5: This parameter is ensured by characterization and not 100% tested. This parameter is not available for Standard Mode. © 2009 Microchip Technology Inc. = -40 to +85° Min Typ Max 0 — ...
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... MCP3426/7 SU:STA SCL T LOW T SDA HD:STA FIGURE 5- Bus Timing Data. DS22226A-page 28 T HIGH T SU:DAT T HD:DAT SU:STO T BUF 0.7V DD 0.3V DD © 2009 Microchip Technology Inc. ...
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... The pull-up resistor is typically chosen between 5 kΩ and 10 kΩ ranges for standard and fast modes, and less than 1 kΩ for high speed mode depending on the presence of bus loading capacitance. © 2009 Microchip Technology Inc. 2 6.1 ADDRESS SELECTION PINS ...
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... Differential Input Signal Connection: Excitation 8 9 Stop Bit R/W (b) Single-ended Input Signal Connection: MCP342X Excitation Response Sensor FIGURE 6-4: Single-Ended Input Connections. Sensor CHn+ Input Signal CHn- MCP342X R 1 CHn+ Input Signal R 2 CHn- MCP342X Differential and © 2009 Microchip Technology Inc. ...
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... FIGURE 6-5: Battery Voltage and Charging/Discharging Current Measurement. © 2009 Microchip Technology Inc. Therefore, the current measurement often prefers to use a current sensor with smaller resistance value, which, in turn, requires high resolution ADC device. The device can measure the input voltage as low as 7.8 µ ...
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... Where: 1 LSB = Isothermal Block MCP9800 SDA SCL MCP9800 SDA SCL μ = 62.5 V/PGA = 7.8125μV for PGA = 8 μ • μ V/°C = 320 V/°C μ 320 V/°C = ------------------------ - = 5.12 Codes/°C μ 62.5 V 62.5 µV with 16 bit configuration © 2009 Microchip Technology Inc. ...
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... Where: 1 LSB = 62.5 µV with 16 Bit configuration Pressure Sensor (NPP301 0.1 µ µF Thermistor R 2 FIGURE 6-7: Example of Pressure and Temperature Measurement. © 2009 Microchip Technology Inc. ⎛ ⎞ ⎜ ⎟ ----------------- - ⎜ ⎟ 62.5μV ⎝ ⎠ ----------------- - PGA • ) ⎞ ⎠ ...
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... The thermistor sensor is simple to use and widely used for the temperature measurement applications. It has both linear and non-linear responses over temperature range used to adjust the linear region of interest 1 for measurement. DS22226A-page 34 ⎞ ⎟ 100 mV -------------------- - ⎟ 62.5μV ⎠ ----------------- - PGA • ) ⎞ ⎠ temperature ) 2 © 2009 Microchip Technology Inc. ...
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... Note: In the event the full Microchip part number cannot be marked on one line, it will be carried over to the next line, thus limiting the number of available characters for customer-specific information. © 2009 Microchip Technology Inc. MCP3426/7/8 Example: ABX 945 ...
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... MSOP (MCP3427) XXXXXX YWWNNN 14-Lead SOIC (150 mil) (MCP3428) XXXXXXXXXXX XXXXXXXXXXX YYWWNNN 14-Lead TSSOP (4.4 mm) (MCP3428) XXXXXXXX YYWW NNN DS22226A-page 36 Example 3427 2 9 0945 3 8 256 Example: 3427E 945256 Example: MCP3428 e E/SL^^ 3 0945256 Example: MCP3428E 0945 256 © 2009 Microchip Technology Inc. ...
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... D N NOTE TOP VIEW A3 © 2009 Microchip Technology Inc EXPOSED PAD BOTTOM VIEW A NOTE 2 A1 MCP3426/7 NOTE DS22226A-page 37 ...
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... MCP3426/7/8 DS22226A-page 38 © 2009 Microchip Technology Inc. ...
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... D N NOTE © 2009 Microchip Technology Inc MCP3426/7/8 φ L DS22226A-page 39 ...
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... MCP3426/7/8 Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging DS22226A-page 40 © 2009 Microchip Technology Inc. ...
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... N NOTE © 2009 Microchip Technology Inc φ MCP3426/7/8 α c β DS22226A-page 41 ...
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... MCP3426/7/8 DS22226A-page 42 © 2009 Microchip Technology Inc. ...
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... D N NOTE TOP VIEW A3 © 2009 Microchip Technology Inc. MCP3426/7 EXPOSED PAD BOTTOM VIEW A A1 NOTE NOTE DS22226A-page 43 ...
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... MCP3426/7/8 DS22226A-page 44 © 2009 Microchip Technology Inc. ...
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... D N NOTE © 2009 Microchip Technology Inc MCP3426/7/8 φ DS22226A-page 45 ...
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... MCP3426/7/8 N NOTE DS22226A-page φ α c β © 2009 Microchip Technology Inc. ...
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... Microchip Technology Inc. MCP3426/7/8 DS22226A-page 47 ...
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... MCP3426/7 NOTE DS22226A-page © 2009 Microchip Technology Inc. φ L ...
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... Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging © 2009 Microchip Technology Inc. MCP3426/7/8 DS22226A-page 49 ...
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... MCP3426/7/8 NOTES: DS22226A-page 50 © 2009 Microchip Technology Inc. ...
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... APPENDIX A: REVISION HISTORY Revision A (December 2009) • Original Release of this Document. © 2009 Microchip Technology Inc. MCP3426/7/8 DS22226A-page 51 ...
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... MCP3426/7/8 NOTES: DS22226A-page 52 © 2009 Microchip Technology Inc. ...
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... Examples: a) MCP3426A0-E/MC: 2-Channel ADC, 8LD DFN package. b) MCP3426A0T-E/MC: Tape and Reel, 2-Channel ADC, 8LD DFN package. c) MCP3426A0-E/MS: 2-Channel ADC, 8LD MSOP package. d) MCP3426A0T-E/MS: Tape and Reel, 2-Channel ADC, 8LD MSOP package. e) MCP3426A0-E/SN: 2-Channel ADC, 8LD SOIC package. f) MCP3426A0T-E/SN: Tape and Reel, 2-Channel ADC, 8LD SOIC package ...
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... MCP3426/7/8 NOTES: DS22226A-page 54 © 2009 Microchip Technology Inc. ...
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... REAL ICE, rfLAB, Select Mode, Total Endurance, TSHARC, UniWinDriver, WiperLock and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. ...
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... Fax: 886-3-6578-370 Taiwan - Kaohsiung Tel: 886-7-536-4818 Fax: 886-7-536-4803 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 Thailand - Bangkok Tel: 66-2-694-1351 Fax: 66-2-694-1350 © 2009 Microchip Technology Inc. EUROPE Austria - Wels Tel: 43-7242-2244-39 Fax: 43-7242-2244-393 Denmark - Copenhagen Tel: 45-4450-2828 Fax: 45-4485-2829 France - Paris Tel: 33-1-69-53-63-20 ...