MCP4902-E/P Microchip Technology, MCP4902-E/P Datasheet

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... The devices provide high accuracy and low noise Reference performance for consumer and industrial applications (V ) where calibration or compensation of signals (such as REF temperature, pressure and humidity) are required. The MCP4902/4912/4922 devices are available in the PDIP, SOIC and TSSOP packages. Internal (2.048V) Package Types 14-Pin PDIP, SOIC, TSSOP V External ...

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... MCP4902/4912/4922 Block Diagram LDAC V A REF Buffer Gain Logic DS22250A-page 2 CS SDI SCK Interface Logic Power-on Reset Input Input Register A Register B DAC DAC A B Register Register String String DAC DAC B A Buffer Gain Logic Output Op Amps Output Logic V V SHDN OUTB ...

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... Guaranteed monotonic by design over all codes. 2: This parameter is ensured by design, and not 100% tested.  2010 Microchip Technology Inc. MCP4902/4912/4922 † Notice: Stresses above those listed under “Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of ...

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... MCP4902/4912/4922 ELECTRICAL CHARACTERISTICS (CONTINUED) Electrical Specifications: Unless otherwise indicated, V GND 100 -40 to +85°C. Typical values are at +25° Parameters Sym Offset Error Temperature V /°C OS Coefficient Gain Error g E G/°C Gain Error Temperature Coefficient Input Amplifier (V Input) REF Input Range – Buffered ...

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... Input Impedance R VREF Input Capacitance – C VREF Unbuffered Mode Note 1: Guaranteed monotonic by design over all codes. 2: This parameter is ensured by design, and not 100% tested.  2010 Microchip Technology Inc. MCP4902/4912/4922 = 5V 0V 2.048V, Output Buffer Gain ( REF Min Typ Max Units 2.7 — ...

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... MCP4902/4912/4922 ELECTRICAL CHARACTERISTIC WITH EXTENDED TEMPERATURE (CONTINUED) Electrical Specifications: Unless otherwise indicated, V GND 100 pF. Typical values are at +125°C by characterization or simulation. L Parameters Sym Multiplying Mode f VREF -3 dB Bandwidth f VREF Multiplying Mode – Total THD VREF Harmonic Distortion Output Amplifier Output Swing ...

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... Note 1: This parameter is ensured by design and not 100% tested CSSR Mode 1,1 SCK Mode 0 MSb in LDAC FIGURE 1-1: SPI Input Timing Data.  2010 Microchip Technology Inc. MCP4902/4912/4922 = 2.7V – 5.5V Min Typ Max Units 0.7 V — — — — 0 — ...

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... Storage Temperature Range Thermal Package Resistances Thermal Resistance, 14L-PDIP Thermal Resistance, 14L-SOIC Thermal Resistance, 14L-TSSOP Note 1: The MCP4902/4912/4922 devices operate over this extended temperature range, but with reduced performance. Operation in this range must not cause T 150°C. DS22250A-page 8 = +2.7V to +5.5V Min ...

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... Code (Decimal) 1 FIGURE 2-3: DNL vs. Code and V Gain = 1 (MCP4922).  2010 Microchip Technology Inc. MCP4902/4912/4922 = 5V 0V 2.048V, Gain = 2x REF 0.0766 0.0764 0.0762 0.076 0.0758 0.0756 0.0754 0.0752 0.075 -40 4096 FIGURE 2-4: Temperature (MCP4922) ...

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... MCP4902/4912/4922 Note: Unless otherwise indicated +25° 2.5 2 1.5 1 0.5 0 -40 - Ambient Temperature (ºC) FIGURE 2-7: Absolute INL vs. Temperature (MCP4922). 3 2.5 2 1 Voltage Reference (V) FIGURE 2-8: Absolute INL vs. V (MCP4922 REF 1024 2048 3072 Code (Decimal) FIGURE 2-9: INL vs. Code and V (MCP4922) ...

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... Note: Unless otherwise indicated +25° 0.06 o Temp = - +125 0.04 0.02 0 -0.02 -0.04 -0. 128 160 192 224 256 Code FIGURE 2-13: DNL vs. Code and Temperature (MCP4902 +85 C 0.25 0 -0.25 o 125 C -0 128 160 192 Code FIGURE 2-14: INL vs. Code and Temperature (MCP4902). ...

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... MCP4902/4912/4922 Note: Unless otherwise indicated +25° 1.5 1 0.5 0 -40 - Ambient Temperature (ºC) FIGURE 2-18: Hardware Shutdown Current vs. Ambient Temperature and -40 - Ambient Temperature (ºC) FIGURE 2-19: Software Shutdown Current vs. Ambient Temperature and V DD 0.12 0.1 0.08 0.06 0.04 0.02 0 -0.02 -40 - Ambient Temperature (ºC) FIGURE 2-20: Offset Error vs ...

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... Ambient Temperature (ºC) FIGURE 2-26: V High Limit vs. Ambient OUT Temperature and  2010 Microchip Technology Inc. MCP4902/4912/4922 = 5V 0V 2.048V, Gain = 2x REF 0.0045 V DD 5.5V 0.004 5.0V 0.0035 4.0V 0.003 3.0V 0.0025 2.7V 0.002 0.0015 ...

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... MCP4902/4912/4922 Note: Unless otherwise indicated +25° OUT SCK LDAC Time (1 µs/div) FIGURE 2-30: V Rise Time. OUT V OUT SCK LDAC Time (1 µs/div) FIGURE 2-31: V Fall Time. OUT V OUT SCK LDAC Time (1 µs/div) FIGURE 2-32: V Rise Time. OUT DS22250A-page 2.048V, Gain = 2x REF ...

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... V REF 600 580 560 540 520 500 480 460 440 420 400 Worst Case Codes (decimal) FIGURE 2-37 Bandwidth vs. Worst Codes.  2010 Microchip Technology Inc. MCP4902/4912/4922 = 5V 0V 2.50V, Gain = 2x REF 160 D = 416 - 672 D = 928 D = 1184 D = 1440 - 1696 D = 1952 D = 2208 ...

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... MCP4902/4912/4922 NOTES: DS22250A-page 16  2010 Microchip Technology Inc. ...

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... Serial Clock Input (SCK) SCK is the SPI compatible serial clock input pin. 3.4 Serial Data Input (SDI) SDI is the SPI compatible serial data input pin.  2010 Microchip Technology Inc. MCP4902/4912/4922 Table 3-1. Function ) OUT Output B ...

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... MCP4902/4912/4922 NOTES: DS22250A-page 18  2010 Microchip Technology Inc. ...

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... GENERAL OVERVIEW The MCP4902, MCP4912 and MCP4922 are dual voltage-output 8-bit, 10-bit and 12-bit DAC devices, respectively. These devices include input amplifiers, rail-to-rail output amplifiers, reference buffers for external voltage reference, shutdown reset-management circuitry. The devices use an SPI serial communication interface and operate with a single supply voltage from 2 ...

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... The default value is a gain of 2 (<GA> = 0). DS22250A-page 20 4.2.2 VOLTAGE REFERENCE AMPLIFIERS The input buffer amplifiers for the MCP4902/4912/4922 devices provide low offset voltage and low noise. A Configuration bit for each DAC allows the V bypass the V input buffer amplifiers, achieving a REF Buffered or Unbuffered mode ...

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... When a DAC is changed from Shutdown to Active mode, the output settling time takes less than 10 µs, but more than the standard active mode settling time (4.5 µs).  2010 Microchip Technology Inc. MCP4902/4912/4922 Op Amp Power-Down Control Circuit ...

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... MCP4902/4912/4922 NOTES: DS22250A-page 22  2010 Microchip Technology Inc. ...

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... DAC’s input registers are transferred into the DAC’s output registers. The outputs will transition to the value and held in the DAC All writes to the MCP4902/4912/4922 are 16-bit words. Any clocks past the 16th clock will be ignored. The and DAC Most Significant 4 bits are Configuration bits ...

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... REGISTER 5-2: WRITE COMMAND REGISTER FOR MCP4912 (10-BIT DAC) W-x W-x W-x W-0 W-x A/B BUF GA SHDN D9 bit 15 REGISTER 5-3: WRITE COMMAND REGISTER FOR MCP4902 (8-BIT DAC) W-x W-x W-x W-0 W-x A/B BUF GA SHDN D7 bit 15 Where: bit 15 A/B: DAC ...

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... X = “don’t care” bits FIGURE 5-2: Write Command for MCP4912 (10-bit DAC SCK config bits SDI A/B BUF GA SHDN D7 LDAC V OUT Note “don’t care” bits FIGURE 5-3: Write Command for MCP4902 (8-bit DAC).  2010 Microchip Technology Inc. MCP4902/4912/4922 data bits ...

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... MCP4902/4912/4922 NOTES: DS22250A-page 26  2010 Microchip Technology Inc. ...

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... TYPICAL APPLICATIONS The MCP4902/4912/4922 family of devices are gen- eral purpose DACs intended to be used in applications where a precision with low-power and moderate bandwidth is required. Applications generally suited for the devices are: • Set Point or Offset Trimming • Sensor Calibration • Digitally-Controlled Multiplier/Divider • ...

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... SENSE OUT 0 Gain selection ( Digital value of DAC (0-255) for MCP4901/MCP4902 n = Digital value of DAC (0-1023) for MCP4911/MCP4912  = Digital value of DAC (0-4095) for MCP4921/MCP4922   DAC Bit Resolution Decreasing Output Step Size to 0.82V or use a voltage divider on the is an option if the V ...

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... MCP4902 MCP4912 MCP4922 V V REF DD DAC SPI   V OUT = V G ------ REF Gain selection ( Digital value of DAC (0-255) for MCP4901/MCP4902 n = Digital value of DAC (0-1023) for MCP4911/MCP4912 = Digital value of DAC (0-4095) for MCP4921/MCP4922 N = DAC Bit Resolution ------------------ = Thevenin  Equivalent V R CC+ ...

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... V V REF OUT DAC R 4 SPI Gain selection ( Digital value of DAC (0-255) for MCP4901/MCP4902 n = Digital value of DAC (0-1023) for MCP4911/MCP4912 = Digital value of DAC (0-4095) for MCP4921/MCP4922 N = DAC Bit Resolution R – 2 -------- - = k and R 1 Step 4: Next, solve for R 4096, knowing that the output needs ...

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... Selectable Gain and Offset Bipolar Voltage Output Using a Dual DAC In some applications, precision digital control of the output range is desirable. Example 6-4 to use the MCP4902/4912/4922 to achieve this in a bipolar or single-supply application. EXAMPLE 6-4: BIPOLAR VOLTAGE SOURCE WITH SELECTABLE GAIN AND OFFSET V V ...

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... MCP4902/4912/4922 6.7 Designing a Double-Precision DAC Using a Dual DAC Example 6-5 illustrates how to design a single-supply voltage output capable 24-bit resolution from a dual 12-bit DAC. This design is simply a voltage divider with a buffered output example application similar to the one developed in Section 6.5.1 “Design Example: Design a Bipolar DAC Using Example 6-3 with 12-bit MCP4922 or MCP4921” ...

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... DAC’s setting under known sensor conditions. would sense REF V V OUT DAC SPI V CC 3-wire G = Gain select ( Digital value of DAC (0-255) for MCP4901/MCP4902 n = Digital value of DAC (0-1023) for MCP4911/MCP4912 = Digital value of DAC (0-4095) for MCP4921/MCP4922 N = DAC Bit Resolution REF Load + – ...

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... MCP4902/4912/4922 6.9 Using Multiplier Mode The MCP4902/4912/4922 family of devices use exter- nal reference, and these devices are ideally suited for use as a multiplier/divider in a signal chain. The common applications are: (a) Precision programmable gain/attenuator amplifiers and (b) Motor control feedback loop. The wide input range (0V – V Unbuffered mode and near rail-to-rail range in Buffered mode: its bandwidth (> ...

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... DEVELOPMENT SUPPORT 7.1 Evaluation and Demonstration Boards TM The Mixed Signal PICtail Demo Board supports the MCP4902/4912/4922 family of devices. Please refer to www.microchip.com for further information on this products capabilities and availability.  2010 Microchip Technology Inc. MCP4902/4912/4922 DS22250A-page 35 ...

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... MCP4902/4912/4922 NOTES: DS22250A-page 36  2010 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.  2010 Microchip Technology Inc. MCP4902/4912/4922 Example: MCP4922 E ...

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... MCP4902/4912/4922 /HDG 3ODVWLF 'XDO ,Q/LQH 3 ±  PLO %RG\ >3',3@ 1RWH N NOTE 1RWHV DS22250A-page  2010 Microchip Technology Inc. ...

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... PP %RG\ >62,&@ 1RWH N NOTE 1RWHV  2010 Microchip Technology Inc. MCP4902/4912/4922 φ α c β DS22250A-page 39 ...

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... MCP4902/4912/4922 1RWH DS22250A-page 40  2010 Microchip Technology Inc. ...

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... PP %RG\ >76623@ 1RWH NOTE 1RWHV  2010 Microchip Technology Inc. MCP4902/4912/4922 φ L DS22250A-page 41 ...

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... MCP4902/4912/4922 Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging DS22250A-page 42  2010 Microchip Technology Inc. ...

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... APPENDIX A: REVISION HISTORY Revision A (April 2010) • Original Release of this Document.  2010 Microchip Technology Inc. MCP4902/4912/4922 DS22250A-page 43 ...

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... MCP4902/4912/4922 NOTES: DS22250A-page 44  2010 Microchip Technology Inc. ...

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... Plastic Dual In-Line (PDIP 14-Lead Plastic Small Outline - Narrow (SOIC 14-Lead Plastic Think Shrink Small Outline (TSSOP)  2010 Microchip Technology Inc. MCP4902/4912/4922 Examples: a) MCP4902-E/P: b) MCP4902-E/SL: Extended temperature, c) MCP4902T-E/SL: Extended temperature, d) MCP4902-E/ST: Extended temperature, e) MCP4902T-E/ST: Extended temperature, f) MCP4912-E/P: (Extended) g) MCP4912-E/SL: ...

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... MCP4902/4912/4922 NOTES: DS22250A-page 46  2010 Microchip Technology Inc. ...

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... PICtail, 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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