MAX1492CNI+ Maxim Integrated Products, MAX1492CNI+ Datasheet
MAX1492CNI+
Specifications of MAX1492CNI+
Related parts for MAX1492CNI+
MAX1492CNI+ Summary of contents
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... SPI-/QSPI-/MICROWIRE-Compatible Serial Interface o Evaluation Kit Available (Order MAX1494EVKIT) Ordering Information/ Selector Guide TEMP PIN- PART RANGE PACKAGE MAX1492CAI+ 0°C to +70°C 28 SSOP MAX1492CNI+ 0°C to +70°C 28 PDIP MAX1494CCJ+ 0°C to +70°C 32 LQFP + Denotes a lead(Pb)-free/RoHS-compliant package. Features RESOLUTION (DIGITS) 3.5 3.5 4.5 1 ...
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Single-Chip ADCs with LCD Drivers ABSOLUTE MAXIMUM RATINGS AVDD to GND...........................................................-0.3V to +6V DVDD to GND...........................................................-0.3V to +6V AIN+, AIN- to GND ...............................V NEG REF+, REF- to GND ..............................V NEG LOWBATT to GND...................................-0.3V to (AVDD + 0.3V) ...
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Single-Chip ADCs ELECTRICAL CHARACTERISTICS (continued 2.7V to 5.25V, V AVDD DVDD GND All specifications are MIN MAX PARAMETER SYMBOL Normal-Mode 50Hz and 60Hz Rejection (Simultaneously) Common-Mode ...
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Single-Chip ADCs with LCD Drivers ELECTRICAL CHARACTERISTICS (continued 2.7V to 5.25V 0V, V AVDD DVDD GND All specifications are MIN MAX PARAMETER SYMBOL CHARGE ...
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Single-Chip ADCs TIMING CHARACTERISTICS (Notes 10, 11 and Figure 13 2.7V to 5.25V, V AVDD DVDD GND PARAMETER SYMBOL SCLK Operating Frequency SCLK Pulse-Width High SCLK Pulse-Width Low DIN to SCLK Setup DIN ...
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Single-Chip ADCs with LCD Drivers ( 5V 0V, external reference mode, REF+ = 2.048V, REF- = GND, RANGE bit = 1, internal clock mode, T AVDD DVDD GND +25°C, unless otherwise noted.) ...
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Single-Chip ADCs ( 5V 0V, external reference mode, REF+ = 2.048V, REF- = GND, RANGE bit = 1, internal clock mode, T AVDD DVDD GND +25°C, unless otherwise noted.) INTERNAL REFERENCE VOLTAGE ...
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Single-Chip ADCs with LCD Drivers PIN NAME MAX1492 MAX1494 1 30 CLK 2 31 DVDD 3 32 GND 4 1 AVDD 5 2 AIN AIN REF REF LOWBATT EOC ...
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Single-Chip ADCs PIN NAME MAX1492 MAX1494 24 21 SEG10 25 25 BP3 26 26 BP2 27 27 BP1 NEG — 22 SEG11 — 23 SEG12 — 24 SEG13 — DISP AVDD DVDD ...
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Single-Chip ADCs with LCD Drivers Detailed Description The MAX1492/MAX1494 low-power, highly integrated ADCs with LCD drivers convert a ±2V differential input voltage (one count is equal to 100µV for the MAX1494 and 1mV for the MAX1492) with ...
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Single-Chip ADCs ten times the first-notch frequency and 60Hz is equal to 12 times the first-notch frequency. For large step changes at the input, allow a settling time of 800ms before valid data is read. Configure the ...
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Single-Chip ADCs with LCD Drivers HOLD Figure 4. Backplane Connection for the MAX1494 (4.5 Digits) SEG13: PEAK, HOLD, N.C. HOLD SEG12: F4, E4, DP4 SEG11: A4, G4, D4 SEG10: B4, C4, BC5 SEG9: F3, E3, DP3 Figure ...
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Single-Chip ADCs HOLD Figure 6. Backplane Connection for the MAX1492 (3.5 Digits) SEG9: F3, E3, DP3 SEG8: A3, G3, D3 Figure 7. Segment Connection for the MAX1492 (3.5 Digits) thus the contrast of the segment. The RMS ...
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Single-Chip ADCs with LCD Drivers Table 2. Decimal-Point Control Table (MAX1494) DP_EN DPSET1 DPSET2 ...
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Single-Chip ADCs BP1 BP2 BP3 ALL OFF OFF OFF OFF Figure 9. LCD Voltage Waveform—Combinations 1–4 (BP_, SEG2/5/8) Figure 21 shows the MAX1492/MAX1494 operating with ...
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Single-Chip ADCs with LCD Drivers BP1 BP2 BP3 ALL OFF OFF OFF OFF φ1, φ2, φ HIGH WITH RESPECT TO SEGMENT (BP+ ...
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Single-Chip ADCs ALL OFF OFF OFF ALL VOLTAGE CONTRAST RATIO = V φ1, φ2, φ HIGH WITH RESPECT TO SEGMENT (BP+ TIME) φ1', ...
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Single-Chip ADCs with LCD Drivers 100 Figure 12. Contrast vs. Applied RMS Voltage 18 ______________________________________________________________________________________ Ø = -10° Ø = +10° Ø = -30° Ø = ...
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Single-Chip ADCs CS t CSS t CSH SCLK DIN t DV DOUT Figure 13. Detailed Timing Diagram CS SCLK 1 0 RS4 RS3 RS2 RS1 DIN CONTROL BYTE DOUT Figure 14. Serial-Interface 16-Bit ...
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Single-Chip ADCs with LCD Drivers CS SCLK 1 1 RS4 RS3 RS2 RS1 RS0 DIN CONTROL BYTE DOUT Figure 16. Serial-Interface 16-Bit Read Timing Diagram CS SCLK 1 1 RS4 RS3 RS2 RS1 RS0 DIN CONTROL BYTE ...
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Single-Chip ADCs Applications Information The SPI/QSPI/MICROWIRE serial interface consists of a chip select (CS), a serial clock (SCLK), a data in (DIN), a data out (DOUT), and an asynchronous EOC output. EOC provides an asynchronous end-of-conversion sig- ...
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Single-Chip ADCs with LCD Drivers Command Byte (Write Only): MSB Bit 7 Bit 6 Bit 5 START (1) R/W RS4 START: Start Bit. The first 1 clocked into the MAX1492/MAX1494 is the first bit of the command ...
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Single-Chip ADCs SPI/ADC: (Default = 0) Display Select Bit. The SPI/ADC bit controls selection of the data fed into the LCD data register this location selects SPI/QSPI/ MICROWIRE data (the user writes this data ...
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Single-Chip ADCs with LCD Drivers Table 6. LCD Priority Table SEG_SEL SPI/ADC Don’t care. Overrange Register (Read/Write): MSB D15 D14 D13 D12 D11 Default values: ...
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Single-Chip ADCs DP1: Segment DP Driver Bit of Digit 1. The default value turns on the LCD segment. E1: Segment e Driver Bit of Digit 1. The default value turns on the LCD segment. F1: Segment f ...
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Single-Chip ADCs with LCD Drivers LCD Segment-Display Register 3 (Read/Write): MSB PEAK HOLD BC_ Default values: 00h The LCD segment-display register 8-bit read/write register. When the SEG_SEL bit (in the con- trol register) is ...
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Single-Chip ADCs LCD Data Register (Read/Write): MSB D15 D14 D13 D12 D11 Default values: 0000h The LCD data register is a 16-bit read/write register. This register updates from the ADC result register 1, the PEAK register, or ...
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Single-Chip ADCs with LCD Drivers Power-On Reset At power-up, the serial interface, LCD driver, digital fil- ter, and modulator circuits reset. The registers return to their default values. Allow time for the reference to set- tle before ...
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Single-Chip ADCs best performance, ground the MAX1492/MAX1494 to the analog ground plane of the circuit board. Avoid running digital lines under the device because they can couple noise onto the device. Run the analog ground plane under ...
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Single-Chip ADCs with LCD Drivers ANALOG SUPPLY FERRITE BEAD 0.1µF 4.7µF AVDD REF+ 0.1µF R REF MAX1492 MAX1494 REF- 0.1µF ACTIVE R GAUGE AIN+ 0.1µF AIN- DUMMY 0.1µF GAUGE R GND Figure 20. Strain-Gauge Application with MAX1492/MAX1494 ...
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Single-Chip ADCs R = 100 Ω 10 0.1µF R 4–20mA 0.1µF Figure 23. 4–20mA Measurement ADC RESULT LCD >4E1Fh 19,999 4E1Fh 2 0002h 1 00001h 0 0000h -0 FFFFh -1 FFFEh -2 ...
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Single-Chip ADCs with LCD Drivers ADC RESULT LCD >7CFh 1999 7CFh 2 002h 1 001h 000h 0 FFFh -0 -1 FFEh -2 FFDh -1999 830h - <830h -1mV 0 -2V ...
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Single-Chip ADCs TOP VIEW + CLK 1 DVDD 2 GND 3 AVDD 4 AIN+ 5 MAX1492 AIN- 6 REF- 7 REF+ 8 LOWBATT 9 EOC DIN 12 SCLK 13 DOUT 14 PDIP/SSOP Chip Information ...
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... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 34 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2010 Maxim Integrated Products ...