Datasheet MCP48FVBXX (Microchip) - 10
| Hersteller | Microchip |
| Beschreibung | 8-/10-/12-Bit Single/Dual Voltage Output Volatile Digital-to-Analog Converters with SPI Interface |
| Seiten / Seite | 84 / 10 — MCP48FVBXX. DC CHARACTERISTICS (CONTINUED). Standard Operating Conditions … |
| Dateiformat / Größe | PDF / 1.0 Mb |
| Dokumentensprache | Englisch |
MCP48FVBXX. DC CHARACTERISTICS (CONTINUED). Standard Operating Conditions (unless otherwise specified):. Characteristics
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MCP48FVBXX DC CHARACTERISTICS (CONTINUED) Standard Operating Conditions (unless otherwise specified):
Operating Temperature: -40°C TA +125°C (Extended)
DC
Unless otherwise noted, all parameters apply across these specified operating ranges:
Characteristics
VDD = +2.7V to 5.5V, VREF = +2.048V to VDD, VSS = 0V Gx = ‘0’, RL = 5 k from VOUT to GND, CL = 100 pF Typical specifications represent values for VDD = 5.5V, TA = +25°C.
Parameters Sym. Min. Typ. Max. Units Conditions
Full-Scale Error EFS — — 4.5 LSb 8-bit Code = FFh, VRxB:VRxA = ‘11’ (see Gx = ‘0’, VREF = 2.048V, No Load
B.4 “Full-Scale
See
Section 2.0, “Typical
LSb Code = FFh, VRxB:VRxA = ‘10’
Error (EFS)”
)
Performance Curves” (2)
Gx = ‘0’, VREF = 2.048V, No Load See
Section 2.0, “Typical
LSb Code = FFh, VRxB:VRxA = ‘01’
Performance Curves” (2)
Gx = ‘0’, VREF = 2.048V, No Load See
Section 2.0, “Typical
LSb Code = FFh, VRxB:VRxA = ‘00’
Performance Curves” (2)
No Load — — 18 LSb 10-bit Code = 3FFh, VRxB:VRxA = ‘11’ Gx = ‘0’, VREF = 2.048V, No Load See
Section 2.0, “Typical
LSb Code = 3FFh, VRxB:VRxA = ‘10’
Performance Curves” (2)
Gx = ‘0’, VREF = 2.048V, No Load See
Section 2.0, “Typical
LSb Code = 3FFh, VRxB:VRxA = ‘01’
Performance Curves” (2)
Gx = ‘0’, VREF = 2.048V, No Load See
Section 2.0, “Typical
LSb Code = 3FFh, VRxB:VRxA = ‘00’
Performance Curves” (2)
No Load — — 70 LSb 12-bit Code = FFFh, VRxB:VRxA = ‘11’ Gx = ‘0’, VREF = 2.048V, No Load See
Section 2.0, “Typical
LSb Code = FFFh, VRxB:VRxA = ‘10’
Performance Curves” (2)
Gx = ‘0’, VREF = 2.048V, No Load See
Section 2.0, “Typical
LSb Code = FFFh, VRxB:VRxA = ‘01’
Performance Curves” (2)
Gx = ‘0’, VREF = 2.048V, No Load See
Section 2.0, “Typical
LSb Code = FFFh, VRxB:VRxA = ‘00’
Performance Curves” (2)
No Load
Note 2
This parameter is ensured by characterization. DS20005466A-page 10 2015 Microchip Technology Inc. Document Outline 8-/10-/12-Bit Single/Dual Voltage Output Volatile Digital-to-Analog Converters with SPI Interface Features Package Types General Description Applications MCP48FVBX1 Device Block Diagram (Single-Channel Output) MCP48FVBX2 Device Block Diagram (Dual-Channel Output) Device Features 1.0 Electrical Characteristics Absolute Maximum Ratings (†) DC Characteristics DC Notes: 1.1 Reset, Power-Down, and SPI Mode Timing Waveforms and Requirements FIGURE 1-1: Power-on and Brown-out Reset Waveforms. FIGURE 1-2: SPI Power-Down Command Waveforms. TABLE 1-1: RESET and Power-Down Timing FIGURE 1-3: VOUT Settling Time Waveform. TABLE 1-2: VOUT Settling Timing FIGURE 1-4: SPI Timing (Mode = 11) Waveforms. FIGURE 1-5: SPI Timing (Mode = 00) Waveforms. TABLE 1-3: SPI Requirements (Mode = 11) TABLE 1-4: SPI Requirements (Mode = 00) Timing Table Notes: Temperature Specifications 2.0 Typical Performance Curves 3.0 Pin Descriptions TABLE 3-1: MCP48FVBX1 (Single-DAC) Pinout Description TABLE 3-2: MCP48FVBX2 (Dual-DAC) Pinout Description 3.1 Positive Power Supply Input (VDD) 3.2 Voltage Reference Pin (VREF) 3.3 Analog Output Voltage Pin (VOUT) 3.4 No Connect (NC) 3.5 Ground (VSS) 3.6 Latch Pin (LAT)/High-Voltage Command (HVC) 3.7 SPI - Chip Select Pin (CS) 3.8 SPI - Serial Data In Pin (SDI) 3.9 SPI - Serial Data Out Pin (SDO) 3.10 SPI - Serial Clock Pin (SCK) 4.0 General Description 4.1 Power-on Reset/Brown-out Reset (POR/BOR) FIGURE 4-1: Power-on Reset Operation. 4.2 Device Memory TABLE 4-1: Memory Map (x16) TABLE 4-2: FACTORY DEFAULT POR / BOR VALUES Register 4-1: DAC0 and DAC1 Registers Register 4-2: Voltage Reference (VREF) Control Register (Address 08h) Register 4-3: Power-down Control Register (Address 09h) Register 4-4: Gain Control and System Status Register (Address 0Ah) 5.0 DAC Circuitry FIGURE 5-1: MCP48FVBXX DAC Module Block Diagram. 5.1 Resistor Ladder FIGURE 5-2: Resistor Ladder Model Block Diagram. 5.2 Voltage Reference Selection FIGURE 5-3: Resistor Ladder Reference Voltage Selection Block Diagram. FIGURE 5-4: Reference Voltage Selection Implementation Block Diagram. 5.3 Output Buffer/VOUT Operation TABLE 5-1: Output Driver Gain FIGURE 5-5: Output Driver Block Diagram. TABLE 5-2: Theoretical Step Voltage (VS) (1) FIGURE 5-6: VOUT Pin Slew Rate. FIGURE 5-7: Circuit to Stabilize Output Buffer for Large Capacitive Loads (CL). TABLE 5-3: DAC Input Code Vs. Calculated Analog Output (VOUT) (VDD = 5.0V) 5.4 Internal Band Gap TABLE 5-4: VOUT USING BAND GAP 5.5 Latch Pin (LAT) FIGURE 5-8: LAT and DAC Interaction. FIGURE 5-9: Example Use of LAT Pin Operation. 5.6 Power-Down Operation FIGURE 5-10: VOUT Power-Down Block Diagram. TABLE 5-5: POWER-DOWN BITS AND OUTPUT RESISTIVE LOAD TABLE 5-6: DAC CURRENT SOURCES 5.7 DAC Registers, Configuration Bits, and Status Bits 6.0 SPI Serial Interface Module 6.1 Overview 6.2 SPI Serial Interface 6.3 Communication Data Rates 6.4 POR/BOR FIGURE 6-1: Typical SPI Interface Block Diagram. 6.5 Interface Pins (CS, SCK, SDI, SDO, and LAT/HVC) TABLE 6-1: SCK Frequency 6.6 The SPI Modes 7.0 SPI Commands TABLE 7-1: SPI Commands - Number of Clocks TABLE 7-2: Command Bits Overview FIGURE 7-1: 24-bit SPI Command Format. 7.1 Write Command TABLE 7-3: Volatile Memory Addresses FIGURE 7-2: Write Command - SDI and SDO States. FIGURE 7-3: Continuous Write Sequence. FIGURE 7-4: 24-Bit Write Command (C1:C0 = “00”) - SPI Waveform with PIC MCU (Mode 1,1). FIGURE 7-5: 24-Bit Write Command (C1:C0 = “00”) - SPI Waveform with PIC MCU (Mode 0,0). 7.2 Read Command FIGURE 7-6: Read Command - SDI and SDO States. FIGURE 7-7: Continuous-Reads Sequence. FIGURE 7-8: 24-Bit Read Command (C1:C0 = “11”) - SPI Waveform with PIC MCU (Mode 1,1). FIGURE 7-9: 24-Bit Read Command (C1:C0 = “11”) - SPI Waveform with PIC MCU (Mode 0,0). 8.0 Typical Applications 8.1 Power Supply Considerations FIGURE 8-1: Bypass Filtering Example Circuit. 8.2 Application Examples FIGURE 8-2: Example Circuit Of Set-Point or Threshold Calibration. FIGURE 8-3: Single-Supply “Window” DAC. 8.3 Bipolar Operation FIGURE 8-4: Digitally-Controlled Bipolar Voltage Source Example Circuit. 8.4 Selectable Gain and Offset Bipolar Voltage Output FIGURE 8-5: Bipolar Voltage Source with Selectable Gain and Offset. 8.5 Designing a Double-Precision DAC FIGURE 8-6: Simple Double-Precision DAC using MCP48FVBX2. 8.6 Building Programmable Current Source FIGURE 8-7: Digitally-Controlled Current Source. 8.7 Serial Interface Communication Times TABLE 8-1: Serial Interface Times / Frequencies 8.8 Design Considerations FIGURE 8-8: Typical Microcontroller Connections. TABLE 8-2: Package Footprint (1) 9.0 Development Support 9.1 Development Tools 9.2 Technical Documentation TABLE 9-1: Technical Documentation 10.0 Packaging Information 10.1 Package Marking Information Appendix A: Revision History Appendix B: Terminology B.1 Resolution B.2 Least Significant Bit (LSb) B.3 Monotonic Operation FIGURE B-1: VW (VOUT). B.4 Full-Scale Error (EFS) B.5 Zero-Scale Error (EZS) B.6 Total Unadjusted Error (ET) B.7 Offset Error (EOS) FIGURE B-2: Offset Error and Zero-Scale Error. B.8 Offset Error Drift (EOSD) B.9 Gain Error (EG) FIGURE B-3: Gain Error and Full-Scale Error Example. B.10 Gain-Error Drift (EGD) B.11 Integral Nonlinearity (INL) FIGURE B-4: INL Accuracy. B.12 Differential Nonlinearity (DNL) FIGURE B-5: DNL Accuracy. B.13 Settling Time B.14 Major-Code Transition Glitch B.15 Digital Feedthrough B.16 -3 dB Bandwidth B.17 Power-Supply Sensitivity (PSS) B.18 Power-Supply Rejection Ratio (PSRR) B.19 VOUT Temperature Coefficient B.20 Absolute Temperature Coefficient B.21 Noise Spectral Density Product Identification System Trademarks Worldwide Sales and Service
MCP48FVBXX DC CHARACTERISTICS (CONTINUED) Standard Operating Conditions (unless otherwise specified):
Operating Temperature: -40°C TA +125°C (Extended)
DC
Unless otherwise noted, all parameters apply across these specified operating ranges:
Characteristics
VDD = +2.7V to 5.5V, VREF = +2.048V to VDD, VSS = 0V Gx = ‘0’, RL = 5 k from VOUT to GND, CL = 100 pF Typical specifications represent values for VDD = 5.5V, TA = +25°C.
Parameters Sym. Min. Typ. Max. Units Conditions
Full-Scale Error EFS — — 4.5 LSb 8-bit Code = FFh, VRxB:VRxA = ‘11’ (see Gx = ‘0’, VREF = 2.048V, No Load
B.4 “Full-Scale
See
Section 2.0, “Typical
LSb Code = FFh, VRxB:VRxA = ‘10’
Error (EFS)”
)
Performance Curves” (2)
Gx = ‘0’, VREF = 2.048V, No Load See
Section 2.0, “Typical
LSb Code = FFh, VRxB:VRxA = ‘01’
Performance Curves” (2)
Gx = ‘0’, VREF = 2.048V, No Load See
Section 2.0, “Typical
LSb Code = FFh, VRxB:VRxA = ‘00’
Performance Curves” (2)
No Load — — 18 LSb 10-bit Code = 3FFh, VRxB:VRxA = ‘11’ Gx = ‘0’, VREF = 2.048V, No Load See
Section 2.0, “Typical
LSb Code = 3FFh, VRxB:VRxA = ‘10’
Performance Curves” (2)
Gx = ‘0’, VREF = 2.048V, No Load See
Section 2.0, “Typical
LSb Code = 3FFh, VRxB:VRxA = ‘01’
Performance Curves” (2)
Gx = ‘0’, VREF = 2.048V, No Load See
Section 2.0, “Typical
LSb Code = 3FFh, VRxB:VRxA = ‘00’
Performance Curves” (2)
No Load — — 70 LSb 12-bit Code = FFFh, VRxB:VRxA = ‘11’ Gx = ‘0’, VREF = 2.048V, No Load See
Section 2.0, “Typical
LSb Code = FFFh, VRxB:VRxA = ‘10’
Performance Curves” (2)
Gx = ‘0’, VREF = 2.048V, No Load See
Section 2.0, “Typical
LSb Code = FFFh, VRxB:VRxA = ‘01’
Performance Curves” (2)
Gx = ‘0’, VREF = 2.048V, No Load See
Section 2.0, “Typical
LSb Code = FFFh, VRxB:VRxA = ‘00’
Performance Curves” (2)
No Load
Note 2
This parameter is ensured by characterization. DS20005466A-page 10 2015 Microchip Technology Inc. Document Outline 8-/10-/12-Bit Single/Dual Voltage Output Volatile Digital-to-Analog Converters with SPI Interface Features Package Types General Description Applications MCP48FVBX1 Device Block Diagram (Single-Channel Output) MCP48FVBX2 Device Block Diagram (Dual-Channel Output) Device Features 1.0 Electrical Characteristics Absolute Maximum Ratings (†) DC Characteristics DC Notes: 1.1 Reset, Power-Down, and SPI Mode Timing Waveforms and Requirements FIGURE 1-1: Power-on and Brown-out Reset Waveforms. FIGURE 1-2: SPI Power-Down Command Waveforms. TABLE 1-1: RESET and Power-Down Timing FIGURE 1-3: VOUT Settling Time Waveform. TABLE 1-2: VOUT Settling Timing FIGURE 1-4: SPI Timing (Mode = 11) Waveforms. FIGURE 1-5: SPI Timing (Mode = 00) Waveforms. TABLE 1-3: SPI Requirements (Mode = 11) TABLE 1-4: SPI Requirements (Mode = 00) Timing Table Notes: Temperature Specifications 2.0 Typical Performance Curves 3.0 Pin Descriptions TABLE 3-1: MCP48FVBX1 (Single-DAC) Pinout Description TABLE 3-2: MCP48FVBX2 (Dual-DAC) Pinout Description 3.1 Positive Power Supply Input (VDD) 3.2 Voltage Reference Pin (VREF) 3.3 Analog Output Voltage Pin (VOUT) 3.4 No Connect (NC) 3.5 Ground (VSS) 3.6 Latch Pin (LAT)/High-Voltage Command (HVC) 3.7 SPI - Chip Select Pin (CS) 3.8 SPI - Serial Data In Pin (SDI) 3.9 SPI - Serial Data Out Pin (SDO) 3.10 SPI - Serial Clock Pin (SCK) 4.0 General Description 4.1 Power-on Reset/Brown-out Reset (POR/BOR) FIGURE 4-1: Power-on Reset Operation. 4.2 Device Memory TABLE 4-1: Memory Map (x16) TABLE 4-2: FACTORY DEFAULT POR / BOR VALUES Register 4-1: DAC0 and DAC1 Registers Register 4-2: Voltage Reference (VREF) Control Register (Address 08h) Register 4-3: Power-down Control Register (Address 09h) Register 4-4: Gain Control and System Status Register (Address 0Ah) 5.0 DAC Circuitry FIGURE 5-1: MCP48FVBXX DAC Module Block Diagram. 5.1 Resistor Ladder FIGURE 5-2: Resistor Ladder Model Block Diagram. 5.2 Voltage Reference Selection FIGURE 5-3: Resistor Ladder Reference Voltage Selection Block Diagram. FIGURE 5-4: Reference Voltage Selection Implementation Block Diagram. 5.3 Output Buffer/VOUT Operation TABLE 5-1: Output Driver Gain FIGURE 5-5: Output Driver Block Diagram. TABLE 5-2: Theoretical Step Voltage (VS) (1) FIGURE 5-6: VOUT Pin Slew Rate. FIGURE 5-7: Circuit to Stabilize Output Buffer for Large Capacitive Loads (CL). TABLE 5-3: DAC Input Code Vs. Calculated Analog Output (VOUT) (VDD = 5.0V) 5.4 Internal Band Gap TABLE 5-4: VOUT USING BAND GAP 5.5 Latch Pin (LAT) FIGURE 5-8: LAT and DAC Interaction. FIGURE 5-9: Example Use of LAT Pin Operation. 5.6 Power-Down Operation FIGURE 5-10: VOUT Power-Down Block Diagram. TABLE 5-5: POWER-DOWN BITS AND OUTPUT RESISTIVE LOAD TABLE 5-6: DAC CURRENT SOURCES 5.7 DAC Registers, Configuration Bits, and Status Bits 6.0 SPI Serial Interface Module 6.1 Overview 6.2 SPI Serial Interface 6.3 Communication Data Rates 6.4 POR/BOR FIGURE 6-1: Typical SPI Interface Block Diagram. 6.5 Interface Pins (CS, SCK, SDI, SDO, and LAT/HVC) TABLE 6-1: SCK Frequency 6.6 The SPI Modes 7.0 SPI Commands TABLE 7-1: SPI Commands - Number of Clocks TABLE 7-2: Command Bits Overview FIGURE 7-1: 24-bit SPI Command Format. 7.1 Write Command TABLE 7-3: Volatile Memory Addresses FIGURE 7-2: Write Command - SDI and SDO States. FIGURE 7-3: Continuous Write Sequence. FIGURE 7-4: 24-Bit Write Command (C1:C0 = “00”) - SPI Waveform with PIC MCU (Mode 1,1). FIGURE 7-5: 24-Bit Write Command (C1:C0 = “00”) - SPI Waveform with PIC MCU (Mode 0,0). 7.2 Read Command FIGURE 7-6: Read Command - SDI and SDO States. FIGURE 7-7: Continuous-Reads Sequence. FIGURE 7-8: 24-Bit Read Command (C1:C0 = “11”) - SPI Waveform with PIC MCU (Mode 1,1). FIGURE 7-9: 24-Bit Read Command (C1:C0 = “11”) - SPI Waveform with PIC MCU (Mode 0,0). 8.0 Typical Applications 8.1 Power Supply Considerations FIGURE 8-1: Bypass Filtering Example Circuit. 8.2 Application Examples FIGURE 8-2: Example Circuit Of Set-Point or Threshold Calibration. FIGURE 8-3: Single-Supply “Window” DAC. 8.3 Bipolar Operation FIGURE 8-4: Digitally-Controlled Bipolar Voltage Source Example Circuit. 8.4 Selectable Gain and Offset Bipolar Voltage Output FIGURE 8-5: Bipolar Voltage Source with Selectable Gain and Offset. 8.5 Designing a Double-Precision DAC FIGURE 8-6: Simple Double-Precision DAC using MCP48FVBX2. 8.6 Building Programmable Current Source FIGURE 8-7: Digitally-Controlled Current Source. 8.7 Serial Interface Communication Times TABLE 8-1: Serial Interface Times / Frequencies 8.8 Design Considerations FIGURE 8-8: Typical Microcontroller Connections. TABLE 8-2: Package Footprint (1) 9.0 Development Support 9.1 Development Tools 9.2 Technical Documentation TABLE 9-1: Technical Documentation 10.0 Packaging Information 10.1 Package Marking Information Appendix A: Revision History Appendix B: Terminology B.1 Resolution B.2 Least Significant Bit (LSb) B.3 Monotonic Operation FIGURE B-1: VW (VOUT). B.4 Full-Scale Error (EFS) B.5 Zero-Scale Error (EZS) B.6 Total Unadjusted Error (ET) B.7 Offset Error (EOS) FIGURE B-2: Offset Error and Zero-Scale Error. B.8 Offset Error Drift (EOSD) B.9 Gain Error (EG) FIGURE B-3: Gain Error and Full-Scale Error Example. B.10 Gain-Error Drift (EGD) B.11 Integral Nonlinearity (INL) FIGURE B-4: INL Accuracy. B.12 Differential Nonlinearity (DNL) FIGURE B-5: DNL Accuracy. B.13 Settling Time B.14 Major-Code Transition Glitch B.15 Digital Feedthrough B.16 -3 dB Bandwidth B.17 Power-Supply Sensitivity (PSS) B.18 Power-Supply Rejection Ratio (PSRR) B.19 VOUT Temperature Coefficient B.20 Absolute Temperature Coefficient B.21 Noise Spectral Density Product Identification System Trademarks Worldwide Sales and Service