DS3906 MAXIM [Maxim Integrated Products], DS3906 Datasheet
DS3906
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DS3906 Summary of contents
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... EEPROM that, in addition to the resistors, are controlled through an I ble serial interface. Three address pins allow up to eight DS3906s to be placed on the same I The DS3906 can also be factory cutomized to provide a variety of transfer functions depending on user requirements. Contact mixedsignal.apps@dalsemi.com for additional information. ...
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Triple NV Low Step Size Variable Resistor Plus Memory ABSOLUTE MAXIMUM RATINGS Voltage SDA, SCL, and H0-H2 Pins CC Relative to Ground.............................................-0.5V to +6.0V Voltage on A0, A1, and A2 Relative to Ground .....-0. ...
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... Note specified with SDA = SCL = V STBY Note 3: The DS3906 will not obstruct the SDA and SCL lines if V not violate their minimum and maximum input voltage levels. Note 4: Tested with external resistor of 87Ω for R Note 5: Timing shown is for fast mode (400kHz) operation. This device is also backward compatible with I ⎯ ...
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Triple NV Low Step Size Variable Resistor Plus Memory (V = +5.0V +25°C, unless otherwise noted SUPPLY CURRENT vs. SUPPLY VOLTAGE 200 180 160 140 120 100 2.70 3.20 3.70 4.20 ...
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T = +25°C, unless otherwise noted RESISTOR R TEMPERATURE COEFFICIENT 0,1 (+25°C TO +85°C) vs. RESISTOR SETTING 400 350 +25°C TO +85°C 300 250 200 150 100 ...
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Triple NV Low Step Size Variable Resistor Plus Memory (V = +5.0V +25°C, unless otherwise noted RESISTANCE AT POSITION 1Fh 2 vs. POWER-UP VOLTAGE 4000 >5.5MΩ RESISTOR R 2 3500 3000 2500 EEPROM RECALL 2000 ...
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... H1 quent sections. RES 1 2.54kΩ Each of the three resistors in the DS3906 has its own LSB control register used to set the resistor position. Refer to the block diagram and Table 2. Each resistor has 64 H2 positions plus a high impedance state. The nominal resistance values for each position is listed in Table 3 ...
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... DS3906’s resistors, the effective resistance is linear and capable of achiev- ing sub-ohm and ohm steps. The resistor settings are stored in EEPROM memory important to point out that the DS3906 EEPROM is organized in 2-byte pages. This is transparent when Table 1. DS3906 Memory Map ADDRESS ...
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... Table 3. DS3906 Resistor Settings (without external resistor) NOMINAL RESISTOR VALUES POSITION WITHOUT EXT RESISTOR (25°C) Dec Hex Resistors 175 178 182 186 190 195 199 204 208 213 218.8 ...
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... Likewise, a series EXT resistor may be used to further customize the desired response. If the DS3906’s transfer function does not meet the applications needs, contact the factory at the email address provided on the front page to inquire about custom resistance values. ...
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... Remember the master must read the slave’s acknowledgement during all byte write operations. Writing Multiple Bytes to a Slave: The DS3906 is capable of writing bytes (1-page or row single write transaction. This is internally controlled by an address counter that allows data to be written to consecutive addresses without transmitting a memory address before each data byte is sent ...
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... Because the whole page is written, even bytes on the page that were not modified during the transaction are still subject to a write cycle. The DS3906’s EEPROM write cycles are specified in the Nonvolatile Memory Characteristics table. The specification shown is at the worst-case temperature ...
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... GND DESIGN NOTES THIS APPLICATION A NUMBER OF LED DRIVERS ARE SET USING THE DS3906'S VARIABLE RESISTORS. 2. THE PARALLEL COMBINATION OF THE DS3906 VARIABLE RESISTOR R0 AND 105Ω (R RESISTOR WITH LINEAR STEP INCREMENTS OF 0.6Ω RANGING FROM 66Ω TO 101Ω. THE SAME APPLIES FOR RESISTOR 1 (R1). ...
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Triple NV Low Step Size Variable Resistor Plus Memory Chip Topology TRANSISTOR COUNT: 16,200 SUBSTRATE CONNECTED TO GROUND Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses ...