MCP4912-E/SL Microchip Technology, MCP4912-E/SL Datasheet
MCP4912-E/SL
Specifications of MCP4912-E/SL
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MCP4912-E/SL Summary of contents
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... MCP4902/4912/4922 8/10/12-Bit Dual Voltage Output Digital-to-Analog Converter Features • MCP4902: Dual 8-Bit Voltage Output DAC • MCP4912: Dual 10-Bit Voltage Output DAC • MCP4922: Dual 12-Bit Voltage Output DAC • Rail-to-Rail Output • SPI Interface with 20 MHz Clock Support • Simultaneous Latching of the Dual DACs with LDAC pin • ...
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... 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 OUTA REF 2010 Microchip Technology Inc. ...
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... Hardware Shutdown Current I SHDN Software Shutdown Current I SHDN_SW Power-on-Reset Threshold V POR DC Accuracy MCP4902 Resolution n INL Error INL DNL DNL MCP4912 Resolution n INL Error INL DNL DNL MCP4922 Resolution n INL Error INL DNL DNL Offset Error V OS Note 1: Guaranteed monotonic by design over all codes. ...
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... Vp-p, REF Unbuffered 2.5V ±0.2Vp-p, REF Frequency = 1 kHz V Accuracy is better than 1 LSb for – 40 mV) OUT DD µs Within 1/2 LSb of final value from 1/4 to 3/4 full-scale range 1 LSb change around major carry (0111...1111 to 1000...0000) 2010 Microchip Technology Inc. ...
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... I DD Hardware Shutdown I SHDN Current Software Shutdown Current I SHDN_SW Power-On Reset threshold V POR DC Accuracy MCP4902 Resolution n INL Error INL DNL DNL MCP4912 Resolution n INL Error INL DNL DNL MCP4922 Resolution n INL Error INL DNL DNL Offset Error V OS Offset Error Temperature V /° ...
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... Vp-p, REF Unbuffered 2.5V ±0.1Vp-p, REF Frequency = 1 kHz Accuracy is better than 1 LSb for – 40 mV) OUT DD Within 1/2 LSb of final value from 1/4 to 3/4 full-scale range 1 LSb change around major carry (0111...1111 to 1000...0000) 2010 Microchip Technology Inc. ...
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... IDLE 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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... Min Typ Max Units T -40 — +125 ° -40 — +125 ° -65 — +150 °C A — 70 — °C/W JA — 120 — °C/W JA — 100 — °C exceed the maximum junction temperature GND. SS Conditions Note 1 2010 Microchip Technology Inc. ...
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... Temperature (MCP4922). 0.4 0.3 0.2 0.1 0 -0.1 -0.2 -0.3 -0.4 0 1024 2048 3072 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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... FIGURE 2-11: REF Temperature (MCP4912). 1.5 4 5.5 0.5 -0.5 -1.5 -2.5 -3.5 4096 0 128 FIGURE 2-12: REF Temperature (MCP4912 k 100 pF 1024 2048 3072 4096 Code (Decimal) INL vs. Code (MCP4922). (Figure 2-10) for o o Temp = - +125 C 256 384 512 ...
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... C -0 128 160 192 Code FIGURE 2-14: INL vs. Code and Temperature (MCP4902). 400 350 300 250 200 -40 - Ambient Temperature (ºC) FIGURE 2-15: I vs. Temperature and 2010 Microchip Technology Inc. MCP4902/4912/4922 = 5V 0V 2.048V, Gain = 2x REF FIGURE 2-16 224 256 FIGURE 2-17: 5 ...
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... Ambient Temperature (ºC) Gain Error vs. Ambient . 5.5V 5.0V 4.0V 3.0V 2.7V - 100 120 Ambient Temperature (ºC) V High Threshold 5.5V 5.0V 4.0V 3.0V 2.7V - 100 120 Ambient Temperature (ºC) V Low Threshold 2010 Microchip Technology Inc. ...
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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 ...
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... Rise Time. OUT DS22250A-page 2.048V, Gain = 2x REF V OUT LDAC Time (1 µs/div) FIGURE 2-33 OUT SCK LDAC Time (1 µs/div) FIGURE 2-34: V Shutdown. Frequency (Hz) FIGURE 2-35: PSRR vs. Frequency k 100 pF Rise Time. OUT Rise Time Exit OUT 2010 Microchip Technology Inc. ...
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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 ...
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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 ...
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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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... OUT Transients 0 1 FIGURE 4-3: Typical Transient Response. input to REF and frequency response. ) during the device DD pin, can DD V POR POR Transient Duration Time Transients above the below the – V (V) DD POR 2010 Microchip Technology Inc. ...
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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 ...
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... MCP4902/4912/4922 NOTES: DS22250A-page 22 2010 Microchip Technology Inc. ...
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... Refer to Figure 1-1 and SPI Timing Specifications Table for detailed input and output timing specifications for both Mode 0,0 and Mode 1,1 operation. 2010 Microchip Technology Inc. MCP4902/4912/4922 5.2 Write Command The write command is initiated by driving the CS pin low, followed by clocking the four Configuration bits and the 12 data bits into the SDI pin on the rising edge of SCK ...
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... WRITE COMMAND REGISTER FOR MCP4922 (12-BIT DAC) W-x W-x W-x W-0 W-x A/B BUF GA SHDN D11 bit 15 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) ...
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... Write Command for MCP4922 (12-bit DAC SCK config bits SDI A/B BUF GA SHDN D9 LDAC V OUT Note “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) ...
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... MCP4902/4912/4922 NOTES: DS22250A-page 26 2010 Microchip Technology Inc. ...
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... DD The power source supplying these devices should be as clean as possible. If the application circuit has separate digital and analog power supplies should reside on the analog plane. SS 2010 Microchip Technology Inc. MCP4902/4912/4922 µ 0.1 µ REFA ...
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... 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 is available with ...
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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 ---------------------------------------------------- - = ...
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... 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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... The equation to design a bipolar “window” DAC would be utilized OUTA DAC (Gain Adjust OUTB DAC (Offset Adjust 0.1uF V – Gain selection ( DAC Bit Resolution Digital value of DAC (0-255) for MCP4902 Digital value of DAC (0-1023) for MCP4912 = Digital value of DAC (0-4095) for MCP4922 and ------------------ = ----- - – ...
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... Step 4:The resulting transfer function is not perfectly linear, Example – CC 0.1 µ Gain selection ( Digital value of DAC (0- 4096 Since 2 = 4.2x10 , 22- ’s V has a resolution of 1 mV, B OUTB by 1000 OUTA needs to be 100 k shown in the equation of 6- 2010 Microchip Technology Inc. ...
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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 + – R SENSE DS22250A-page 33 ...
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... EXAMPLE 6-7: MULTIPLIER MODE USING V (a) Single Output DAC: MCP4901 MCP4911 MCP4921 (b) Dual Output DAC: MCP4902 MCP4912 MCP4922 DS22250A-page 34 If the gain selection bit is configured for 1x mode (<GA> = 1), the resulting input signal will be attenuated n by D/2 . With the 12-bit DAC (MCP4921 or MCP4922), if the gain is configured for 2x mode (< ...
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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/P ...
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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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... 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: h) MCP4912T-E/SL: i) MCP4912-E/ST: Extended temperature, j) MCP4912T-E/ST: Extended temperature, k) MCP4922-E/P: l) MCP4922-E/SL: m) MCP4922T-E/SL: n) MCP4922-E/ST: Extended temperature, o) MCP4922T-E/ST: Extended temperature, . Extended temperature, PDIP package ...
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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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