MAX5494 MAXIM [Maxim Integrated Products], MAX5494 Datasheet
MAX5494
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MAX5494 Summary of contents
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... The MAX5494–MAX5499 operate with either a single power supply (+2.7V to +5.25V) or dual power supplies (±2.5V). The devices consume 400µA (max) of supply current when writing data to the nonvolatile memory and 1.5µ ...
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... ZSE MAX5495/MAX5499 C W MAX5494/MAX5498 R HL MAX5495/MAX5499 MAX5494 V = 3V, midcode: 512 DD MAX5495 MAX5494/MAX5498 code, H_ and L_ shorted measure resistance from (Figures 4 and 5) MAX5495/MAX5499 code, H_ and L_ shorted measure resistance from (Figures 4 and 5) = +70°C) A MIN TYP ...
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... Single-supply operation With respect to Dual-supply GND, V operation V = -2.5V SS Single-supply V DD operation V IL With respect to Dual-supply GND, V operation V = -2. Wiper at code 495 MAX5494/MAX5498 BW (01111 01111), 10pF MAX5495/MAX5499 load at wiper MIN TYP 10 -1.6 -4 -1.4 -4 -1.3 +0.45 -1 +0.4 -1 +0. 7 110 0.1 0.15 = 3.6V to 5.25V 2.4 ...
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... Standby Current 4 _______________________________________________________________________________________ = -40°C to +85°C, unless otherwise noted. Typical values are CONDITIONS MAX5494/MAX5498 3V; wiper at DD code 495; 10kHz, 1V signal is applied RMS at H_; 10pF load at wiper MAX5495/MAX5499 3V; wiper at DD code 495; 10kHz, 1V signal is applied RMS at H_ ...
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... Note 6: Wiper settling test condition uses the voltage-divider with a 10pF load on W_. Transition code from 0 to 495 and measure the time from CS going high to the wiper voltage settling to within 0.5% of its final value. _______________________________________________________________________________________ Digital Potentiometers = -40°C to +85°C, unless otherwise noted. Typical values are CONDITIONS MAX5494/MAX5498 t S MAX5495/MAX5499 f SCLK ...
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Dual, Nonvolatile, Linear-Taper Digital Potentiometers (V = +5.0V +25°C, unless otherwise noted DIFFERENTIAL NONLINEARITY vs. CODE (VARIABLE RESISTOR) 1 0.8 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 ...
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... CODE TAP-TO-TAP SWITCHING TRANSIENT (MAX5495/MAX5499) MAX5494 toc17 CS 2V/div V W_ 20mV/div GND FROM CODE 01111 11111 TO CODE 10000 00000 C = 10pF W_ 4µs/div ) -40°C TO +85°C A 768 896 1024 MAX5494 toc18 CS 2V/div V W_ 20mV/div DD 7 ...
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... FREQUENCY (kHz) WIPER RESPONSE vs. FREQUENCY (MAX5494/MAX5498 - -15 -20 CODE = 01111 01111 -25 0 FREQUENCY (kHz) 8 _______________________________________________________________________________________ Typical Operating Characteristics (continued) MAX5494 toc19 2V/div CODE = 01111 01111 -20 -40 - -80 20mV/div -100 GND 10pF ...
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... Dual, Nonvolatile, Linear-Taper PIN MAX5494/ MAX5496/ MAX5498/ MAX5495 MAX5497 MAX5499 — — 7,14,15 6, 7,14,15 6, 7,14, — — _______________________________________________________________________________________ Digital Potentiometers NAME Active-Low Chip-Select Input. Drive CS low to enable the serial interface. Drive CS CS high to disable the serial interface and put the device in standby mode ...
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... Dual, Nonvolatile, Linear-Taper Digital Potentiometers V DD GND SCLK INTERFACE DIN NOTE: THE PROGRAMMABLE VOLTAGE-DIVIDER IS NOT INTENDED FOR CURRENT TO FLOW THROUGH THE WIPER. NOTE: SEE THE MAX5494/MAX5495/MAX5498/MAX5499 PROGRAMMABLE VOLTAGE-DIVIDERS SECTION. Figure 1. MAX5494/MAX5495 Functional Diagram 10 ______________________________________________________________________________________ 10 10-BIT DECODER LATCH BIT NVM POR SPI ...
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... GND V SS POR CS SPI SCLK INTERFACE DIN NOTE: THE PROGRAMMABLE VOLTAGE-DIVIDER IS NOT INTENDED FOR CURRENT TO FLOW THROUGH THE WIPER. NOTE: SEE THE MAX5494/MAX5495/MAX5498/MAX5499 PROGRAMMABLE VOLTAGE-DIVIDERS SECTION. Figure 3. MAX5498/MAX5499 Functional Diagram ______________________________________________________________________________________ Digital Potentiometers Functional Diagrams (continued) 10 10-BIT DECODER LATCH BIT ...
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... D is the decimal equivalent of the 10 data bits written (0 to 1023), V The MAX5494/MAX5498 provide a 10kΩ end-to-end resistance value, while the MAX5495/MAX5499 feature a 50kΩ end-to-end resistance value. Note that the pro- grammable voltage-divider is not intended to be used as a variable resistor ...
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... W-L is the zero-scale error. Table 1 shows R codes. SPI-Compatible Serial Interface The MAX5494–MAX5499 use a 3-wire, SPI-compatible, serial data interface (Figure 6). This write-only interface contains three inputs: chip-select (CS), data input (DIN), and data clock (SCLK). Drive CS low to enable the serial interface and clock data synchronously into the shift register on each SCLK rising edge ...
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Dual, Nonvolatile, Linear-Taper Digital Potentiometers a) 24-BIT COMMAND/DATA WORD CS SCLK DIN b) 8-BIT COMMAND WORD CS SCLK DIN C1 C0 Figure 7. SPI-Compatible Serial-Interface Format Table ...
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Dual, Nonvolatile, Linear-Taper The “write wiper register” command writes data to the volatile random access memory (RAM), leaving the NV registers unchanged. When the device powers up, the data stored in the NV registers transfers to the wiper register, ...
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... The nonvolatile memory is guaranteed for 50 years for wiper data retention and up to 200,000 wiper write cycles. Upon power-up, the MAX5494–MAX5499 load the data Standby Mode stored in the nonvolatile wiper register into the wiper register, updating the wiper position with the data stored in the nonvolatile wiper register. The MAX5494– ...
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... Figure 14 shows the configuration for a 1st-order pro- grammable filter. The gain of the filter is adjusted by R2, and the cutoff frequency is adjusted by R3. Use the following equations to calculate the gain (G) and the 3dB cutoff frequency ( 1/2 MAX5494/MAX5495 1/2 MAX5498/MAX5499 W_ L_ Figure 12. Positive LCD Bias Control Using a Voltage-Divider 1/2 MAX5496– ...
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... Dual, Nonvolatile, Linear-Taper Digital Potentiometers Selector Guide PART CONFIGURATION Two programmable voltage- MAX5494ETE dividers Two programmable voltage- MAX5495ETE dividers MAX5496ETE Two variable resistors MAX5497ETE Two variable resistors One amm ab le vol tage- MAX5498ETE and one vari esi stor ...
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Dual, Nonvolatile, Linear-Taper (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) D D/2 MARKING XXXXX PIN # 1 I.D. C -DRAWING NOT TO SCALE- ...
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Dual, Nonvolatile, Linear-Taper Digital Potentiometers (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) COMMON DIMENSIONS PKG. 16L 5x5 20L 5x5 SYMBOL MIN. NOM. MAX. ...