Datasheet MCP4901, MCP4911, MCP4921 (Microchip) - 4

link to page 3 link to page 3
MCP4901/4911/4921 ELECTRICAL CHARACTERISTICS (CONTINUED) Electrical Specifications:
Unless otherwise indicated, VDD = 5V, VSS = 0V, VREF = 2.048V, Output Buffer Gain (G) = 2x, RL = 5 k to GND, CL = 100 pF TA = -40 to +85°C. Typical values are at +25°C.
Parameters Sym Min Typ Max Units Conditions
Offset Error VOS — ±0.02 1 % of Code = 0x000h FSR Offset Error Temperature VOS/°C — 0.16 — ppm/°C -45°C to 25°C Coefficient — -0.44 — ppm/°C +25°C to 85°C Gain Error gE — -0.10 1 % of Code = 0xFFFh, not including FSR offset error Gain Error Temperature G/°C — -3 — ppm/°C Coefficient
Input Amplifier (VREF Input)
Input Range – Buffered VREF 0.040 — VDD – V
Note 2
Mode 0.040 Code = 2048 V Input Range – Unbuffered V REF = 0.2 Vp-p, f = 100 Hz and REF 0 — VDD V 1 kHz Mode Input Impedance RVREF — 165 — k Unbuffered Mode Input Capacitance – CVREF — 7 — pF Unbuffered Mode Multiplier Mode fVREF — 450 — kHz VREF = 2.5V ±0.2Vp-p, -3 dB Bandwidth Unbuffered, G = 1 fVREF — 400 — kHz VREF = 2.5V ±0.2 Vp-p, Unbuffered, G = 2 Multiplier Mode – THDVREF — -73 — dB VREF = 2.5V ±0.2Vp-p, Total Harmonic Distortion Frequency = 1 kHz
Output Amplifier
Output Swing VOUT — 0.01 to — V Accuracy is better than 1 LSb for VDD – VOUT = 10 mV to (VDD – 40 mV) 0.04 Phase Margin m — 66 — Degrees Slew Rate SR — 0.55 — V/µs Short Circuit Current ISC — 15 24 mA Settling Time tsettling — 4.5 — µs Within 1/2 LSB of final value from 1/4 to 3/4 full-scale range
Dynamic Performance (Note 2)
DAC-to-DAC Crosstalk — 10 — nV-s Major Code Transition — 45 — nV-s 1 LSB change around major carry Glitch (0111...1111 to 1000...0000) Digital Feedthrough — 10 — nV-s Analog Crosstalk — 10 — nV-s
Note 1:
Guaranteed monotonic by design over all codes.
2:
This parameter is ensured by design, and not 100% tested. DS22248A-page 4  2010 Microchip Technology Inc. Document Outline 1.0 Electrical Characteristics FIGURE 1-1: SPI Input Timing Data. 2.0 Typical Performance Curves FIGURE 2-1: DNL vs. Code (MCP4921). FIGURE 2-2: DNL vs. Code and Temperature (MCP4921). FIGURE 2-3: DNL vs. Code and VREF, Gain=1 (MCP4921). FIGURE 2-4: Absolute DNL vs. Temperature (MCP4921). FIGURE 2-5: Absolute DNL vs. Voltage Reference (MCP4921). FIGURE 2-6: INL vs. Code and Temperature (MCP4921). FIGURE 2-7: Absolute INL vs. Temperature (MCP4921). FIGURE 2-8: Absolute INL vs. VREF (MCP4921). FIGURE 2-9: INL vs. Code and VREF (MCP4921). FIGURE 2-10: INL vs. Code (MCP4921). FIGURE 2-11: DNL vs. Code and Temperature (MCP4911). FIGURE 2-12: INL vs. Code and Temperature (MCP4911). FIGURE 2-13: DNL vs. Code and Temperature (MCP4901). FIGURE 2-14: INL vs. Code and Temperature (MCP4901). FIGURE 2-15: IDD vs. Temperature and VDD. FIGURE 2-16: IDD Histogram (VDD = 2.7V). FIGURE 2-17: IDD Histogram (VDD = 5.0V). FIGURE 2-18: Shutdown Current vs. Temperature and VDD. FIGURE 2-19: Offset Error vs.Temperature and VDD. FIGURE 2-20: Gain Error vs. Temperature and VDD. FIGURE 2-21: VIN High Threshold vs. Temperature and VDD. FIGURE 2-22: VIN Low Threshold vs. Temperature and VDD. FIGURE 2-23: Input Hysteresis vs. Temperature and VDD. FIGURE 2-24: VREF Input Impedance vs. Temperature and VDD. FIGURE 2-25: VOUT High Limit vs. Temperature and VDD. FIGURE 2-26: VOUT Low Limit vs. Temperature and VDD. FIGURE 2-27: IOUT High Short vs. Temperature and VDD. FIGURE 2-28: IOUT vs. VOUT. Gain = 1. FIGURE 2-29: VOUT Rise Time FIGURE 2-30: VOUT Fall Time. FIGURE 2-31: VOUT Rise Time FIGURE 2-32: VOUT Rise Time FIGURE 2-33: VOUT Rise Time Exit Shutdown. FIGURE 2-34: PSRR vs. Frequency. FIGURE 2-35: Multiplier Mode Bandwidth. FIGURE 2-36: -3 db Bandwidth vs. Worst Codes. FIGURE 2-37: Phase Shift. 3.0 Pin Descriptions TABLE 3-1: Pin Function Table 3.1 Supply Voltage Pins (VDD, VSS) 3.2 Chip Select (CS) 3.3 Serial Clock Input (SCK) 3.4 Serial Data Input (SDI) 3.5 Latch DAC Input (LDAC) 3.6 Analog Output (VOUT) 3.7 Voltage Reference Input (VREF) 3.8 Exposed Thermal Pad (EP) 4.0 General Overview TABLE 4-1: LSb of each device 4.1 DC Accuracy FIGURE 4-1: Example for INL Error. FIGURE 4-2: Example for DNL Accuracy. 4.2 Circuit Descriptions FIGURE 4-3: Typical Transient Response. FIGURE 4-4: Output Stage for Shutdown Mode. 5.0 Serial Interface 5.1 Overview 5.2 Write Command FIGURE 5-1: Write Command for MCP4921 (12-bit DAC). FIGURE 5-2: Write Command for MCP4911 (10-bit DAC). Note: X are don’t care bits. FIGURE 5-3: Write Command for MCP4901(8-bit DAC). Note: X are don’t care bits. 6.0 Typical Applications 6.1 Digital Interface 6.2 Power Supply Considerations FIGURE 6-1: Typical Connection Diagram. 6.3 Layout Considerations 6.4 Single-Supply Operation 6.5 Bipolar Operation 6.6 Selectable Gain and Offset Bipolar Voltage Output Using DAC Devices 6.7 Designing a Double-Precision DAC 6.8 Building Programmable Current Source 6.9 Using Multiplier Mode 7.0 Development support 7.1 Evaluation & Demonstration Boards 8.0 Packaging Information 8.1 Package Marking Information Corporate Office Atlanta Boston Chicago Cleveland Fax: 216-447-0643 Dallas Detroit Kokomo Toronto Fax: 852-2401-3431 Australia - Sydney China - Beijing China - Shanghai India - Bangalore Korea - Daegu Korea - Seoul Singapore Taiwan - Taipei Fax: 43-7242-2244-393 Denmark - Copenhagen France - Paris Germany - Munich Italy - Milan Spain - Madrid UK - Wokingham Worldwide Sales and Service