Datasheet MCP3422, MCP3423, MCP3424 (Microchip) - 9
| Fabricante | Microchip |
| Descripción | 18-Bit, Multi-Channel ΔΣ Analog-to-Digital Converter with I2C Interface and On-Board Reference |
| Páginas / Página | 58 / 9 — MCP3422/3/4. 2.0. TYPICAL PERFORMANCE CURVES. Note:. 0.0035. A = +25°C. … |
| Revisión | 08-21-2009 |
| Formato / tamaño de archivo | PDF / 1.1 Mb |
| Idioma del documento | Inglés |
MCP3422/3/4. 2.0. TYPICAL PERFORMANCE CURVES. Note:. 0.0035. A = +25°C. rity. 0.003. PGA = 1. 0.0025. PGA = 8. 0.002. PGA = 4. PGA = 2. on-
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Versión de texto del documento
MCP3422/3/4 2.0 TYPICAL PERFORMANCE CURVES Note:
The graphs and tables provided following this note are a statistical summary based on a limited number of samples and are provided for informational purposes only. The performance characteristics listed herein are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified operating range (e.g., outside specified power supply range) and therefore outside the warranted range.
Note:
Unless otherwise indicated, TA = -40°C to +85°C, VDD = +5.0V, VSS = 0V, CHn+ = CHn- = VREF/2, VINCOM = VREF/2.
0.0035 8 T T A = +25°C A = +25°C 7 rity 0.003 s) a PGA = 1 e rm 6 n 0.0025 PGA = 8 R) V, Li 5 (µ 0.002 PGA = 4 FS e PGA = 2 on- is 4 of 0.0015 o l N PGA = 8 PGA = 4 a (% PGA = 2 3 t N gr 0.001 PGA = 1 u te tP 2 In 0.0005 Ou 1 0 0 2.5 3 3.5 4 4.5 5 5.5 -100 -75 -50 -25 0 25 50 75 100 V (V) DD Input Signal (% of FSR) FIGURE 2-1:
INL vs. Supply Voltage
FIGURE 2-4:
Output Noise vs. Input (VDD). Voltage.
0.0035 2 PGA = 1 PGA = 1 T 0.003 A = +25°C 1.5 rity a ) PGA = 8 0.0025 V 1 ne ) R Li m S 0.002 0.5 n- r ( 2.7V o f F o 0.0015 rro 0 l N l E PGA = 4 ra (% -0.5 0.001 g 5V ta PGA = 2 te o -1 T In 0.0005 5.5V -1.5 0 -2 -60 -40 -20 0 20 40 60 80 100 120 140 -100 -75 -50 -25 0 25 50 75 100 Temperature (oC) Input Voltage (% of Full-Scale) FIGURE 2-2:
INL vs. Temperature.
FIGURE 2-5:
Total Error vs. Input Voltage.
20 0.2 15 ) 0.1 R ) S PGA = 8 V 10 0 µ PGA = 8 f F PGA = 1 5 PGA = 4 o -0.1 rror ( % 0 -0.2 r ( t E e -5 rro -0.3 ffs E O -10 -0.4 PGA = 2 in a PGA = 2 -15 PGA = 1 G -0.5 PGA = 4 -20 -0.6 -60 -40 -20 0 20 40 60 80 100 120 140 -60 -40 -20 0 20 40 60 80 100 120 140 Temperature (°C) Temperature (°C) FIGURE 2-3:
Offset Error vs.
FIGURE 2-6:
Gain Error vs. Temperature. Temperature. © 2009 Microchip Technology Inc. DS22088C-page 9 Document Outline 1.0 Electrical Characteristics 2.0 Typical Performance Curves FIGURE 2-1: INL vs. Supply Voltage (VDD). FIGURE 2-2: INL vs. Temperature. FIGURE 2-3: Offset Error vs. Temperature. FIGURE 2-4: Output Noise vs. Input Voltage. FIGURE 2-5: Total Error vs. Input Voltage. FIGURE 2-6: Gain Error vs. Temperature. FIGURE 2-7: IDDA vs. Temperature. FIGURE 2-8: IDDS vs. Temperature. FIGURE 2-9: IDDB vs. Temperature. FIGURE 2-10: Oscillator Drift vs. Temperature. FIGURE 2-11: Frequency Response. 3.0 Pin Descriptions TABLE 3-1: PIN Function Table 3.1 Analog Inputs (CHn+, CHn-) 3.2 Supply Voltage (VDD, VSS) FIGURE 3-1: Equivalent Analog Input Circuit. 3.3 Serial Clock Pin (SCL) 3.4 Serial Data Pin (SDA) 3.5 Exposed Thermal Pad (EP) 4.0 Description of Device Operation 4.1 General Overview 4.2 Power-On-Reset (POR) FIGURE 4-1: POR Operation. 4.3 Internal Voltage Reference 4.4 Analog Input Channels 4.5 Input Voltage Range 4.6 Input Impedance 4.7 Aliasing and Anti-aliasing Filter 4.8 Self-Calibration 4.9 Digital Output Codes and Conversion to Real Values TABLE 4-1: Resolution Settings VS. LSB TABLE 4-2: Example of output code for 18 bits (Note 1, Note 2) TABLE 4-3: Minimum and Maximum Output codes (Note) TABLE 4-4: Example of converting output code to voltage (With 18 Bit Setting) 5.0 Using the Devices 5.1 Operating Modes 5.2 Configuration Register TABLE 5-1: Write Configuration Bits TABLE 5-2: READ Configuration Bits 5.3 I2C Serial Communications FIGURE 5-1: Address Byte. FIGURE 5-2: General Call Latch Command and Voltage Output at Address Pin Left “Floating” (MCP3423 and MCP3424). FIGURE 5-3: Timing Diagram For Writing To The MCP3422/3/4. TABLE 5-3: Output Codes of each Resolution OPTION FIGURE 5-4: Timing Diagram For Reading From The MCP3422/3/4 With 18-Bit Mode. FIGURE 5-5: Timing Diagram For Reading From The MCP3422/3/4 With 12-Bit to 16-Bit Modes. 5.4 General Call FIGURE 5-6: General Call Address Format. 5.5 High-Speed (HS) Mode 5.6 I2C Bus Characteristics FIGURE 5-7: Data Transfer Sequence on I2C Serial Bus. TABLE 5-4: I2c serial timing Specifications (Continued) FIGURE 5-8: I2C Bus Timing Data. 6.0 Basic Application Configuration 6.1 Connecting to the Application Circuits FIGURE 6-1: Typical Connection. FIGURE 6-2: Example of Multiple Device Connection on I2C Bus. FIGURE 6-3: I2C Bus Connection Test. FIGURE 6-4: Differential and Single- Ended Input Connections. 6.2 Application Examples FIGURE 6-5: Battery Voltage and Charging/Discharging Current Measurement. FIGURE 6-6: Four-Channel Thermocouple Applications. FIGURE 6-7: Example of Pressure and Temperature Measurement. 7.0 Development Tool Support 7.1 MCP3422/3/4 Evaluation Boards FIGURE 7-1: MCP3424 Evaluation Board. FIGURE 7-2: Setup for the MCP3424 Evaluation Board with PICkit™ Serial Analyzer. FIGURE 7-3: Example of PICkit™ Serial User Interface. 8.0 Packaging Information 8.1 Package Marking Information
The graphs and tables provided following this note are a statistical summary based on a limited number of samples and are provided for informational purposes only. The performance characteristics listed herein are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified operating range (e.g., outside specified power supply range) and therefore outside the warranted range.
Note:
Unless otherwise indicated, TA = -40°C to +85°C, VDD = +5.0V, VSS = 0V, CHn+ = CHn- = VREF/2, VINCOM = VREF/2.
0.0035 8 T T A = +25°C A = +25°C 7 rity 0.003 s) a PGA = 1 e rm 6 n 0.0025 PGA = 8 R) V, Li 5 (µ 0.002 PGA = 4 FS e PGA = 2 on- is 4 of 0.0015 o l N PGA = 8 PGA = 4 a (% PGA = 2 3 t N gr 0.001 PGA = 1 u te tP 2 In 0.0005 Ou 1 0 0 2.5 3 3.5 4 4.5 5 5.5 -100 -75 -50 -25 0 25 50 75 100 V (V) DD Input Signal (% of FSR) FIGURE 2-1:
INL vs. Supply Voltage
FIGURE 2-4:
Output Noise vs. Input (VDD). Voltage.
0.0035 2 PGA = 1 PGA = 1 T 0.003 A = +25°C 1.5 rity a ) PGA = 8 0.0025 V 1 ne ) R Li m S 0.002 0.5 n- r ( 2.7V o f F o 0.0015 rro 0 l N l E PGA = 4 ra (% -0.5 0.001 g 5V ta PGA = 2 te o -1 T In 0.0005 5.5V -1.5 0 -2 -60 -40 -20 0 20 40 60 80 100 120 140 -100 -75 -50 -25 0 25 50 75 100 Temperature (oC) Input Voltage (% of Full-Scale) FIGURE 2-2:
INL vs. Temperature.
FIGURE 2-5:
Total Error vs. Input Voltage.
20 0.2 15 ) 0.1 R ) S PGA = 8 V 10 0 µ PGA = 8 f F PGA = 1 5 PGA = 4 o -0.1 rror ( % 0 -0.2 r ( t E e -5 rro -0.3 ffs E O -10 -0.4 PGA = 2 in a PGA = 2 -15 PGA = 1 G -0.5 PGA = 4 -20 -0.6 -60 -40 -20 0 20 40 60 80 100 120 140 -60 -40 -20 0 20 40 60 80 100 120 140 Temperature (°C) Temperature (°C) FIGURE 2-3:
Offset Error vs.
FIGURE 2-6:
Gain Error vs. Temperature. Temperature. © 2009 Microchip Technology Inc. DS22088C-page 9 Document Outline 1.0 Electrical Characteristics 2.0 Typical Performance Curves FIGURE 2-1: INL vs. Supply Voltage (VDD). FIGURE 2-2: INL vs. Temperature. FIGURE 2-3: Offset Error vs. Temperature. FIGURE 2-4: Output Noise vs. Input Voltage. FIGURE 2-5: Total Error vs. Input Voltage. FIGURE 2-6: Gain Error vs. Temperature. FIGURE 2-7: IDDA vs. Temperature. FIGURE 2-8: IDDS vs. Temperature. FIGURE 2-9: IDDB vs. Temperature. FIGURE 2-10: Oscillator Drift vs. Temperature. FIGURE 2-11: Frequency Response. 3.0 Pin Descriptions TABLE 3-1: PIN Function Table 3.1 Analog Inputs (CHn+, CHn-) 3.2 Supply Voltage (VDD, VSS) FIGURE 3-1: Equivalent Analog Input Circuit. 3.3 Serial Clock Pin (SCL) 3.4 Serial Data Pin (SDA) 3.5 Exposed Thermal Pad (EP) 4.0 Description of Device Operation 4.1 General Overview 4.2 Power-On-Reset (POR) FIGURE 4-1: POR Operation. 4.3 Internal Voltage Reference 4.4 Analog Input Channels 4.5 Input Voltage Range 4.6 Input Impedance 4.7 Aliasing and Anti-aliasing Filter 4.8 Self-Calibration 4.9 Digital Output Codes and Conversion to Real Values TABLE 4-1: Resolution Settings VS. LSB TABLE 4-2: Example of output code for 18 bits (Note 1, Note 2) TABLE 4-3: Minimum and Maximum Output codes (Note) TABLE 4-4: Example of converting output code to voltage (With 18 Bit Setting) 5.0 Using the Devices 5.1 Operating Modes 5.2 Configuration Register TABLE 5-1: Write Configuration Bits TABLE 5-2: READ Configuration Bits 5.3 I2C Serial Communications FIGURE 5-1: Address Byte. FIGURE 5-2: General Call Latch Command and Voltage Output at Address Pin Left “Floating” (MCP3423 and MCP3424). FIGURE 5-3: Timing Diagram For Writing To The MCP3422/3/4. TABLE 5-3: Output Codes of each Resolution OPTION FIGURE 5-4: Timing Diagram For Reading From The MCP3422/3/4 With 18-Bit Mode. FIGURE 5-5: Timing Diagram For Reading From The MCP3422/3/4 With 12-Bit to 16-Bit Modes. 5.4 General Call FIGURE 5-6: General Call Address Format. 5.5 High-Speed (HS) Mode 5.6 I2C Bus Characteristics FIGURE 5-7: Data Transfer Sequence on I2C Serial Bus. TABLE 5-4: I2c serial timing Specifications (Continued) FIGURE 5-8: I2C Bus Timing Data. 6.0 Basic Application Configuration 6.1 Connecting to the Application Circuits FIGURE 6-1: Typical Connection. FIGURE 6-2: Example of Multiple Device Connection on I2C Bus. FIGURE 6-3: I2C Bus Connection Test. FIGURE 6-4: Differential and Single- Ended Input Connections. 6.2 Application Examples FIGURE 6-5: Battery Voltage and Charging/Discharging Current Measurement. FIGURE 6-6: Four-Channel Thermocouple Applications. FIGURE 6-7: Example of Pressure and Temperature Measurement. 7.0 Development Tool Support 7.1 MCP3422/3/4 Evaluation Boards FIGURE 7-1: MCP3424 Evaluation Board. FIGURE 7-2: Setup for the MCP3424 Evaluation Board with PICkit™ Serial Analyzer. FIGURE 7-3: Example of PICkit™ Serial User Interface. 8.0 Packaging Information 8.1 Package Marking Information