DS3908 MAXIM [Maxim Integrated Products], DS3908 Datasheet
DS3908
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DS3908 Summary of contents
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... The potentiometer position and amplifier gain are controlled through an I ble serial bus. The DS3908 operates in both 3.3V and 5V systems and features a write-protect pin that locks the position of the potentiometers and gain registers eight DS3908s can be placed on a single I ...
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Dual, 64-Position Nonvolatile Digital Potentiometer with Buffered Outputs ABSOLUTE MAXIMUM RATINGS Voltage SDA, and SCL Relative to GND .....-0.5V to +6.0V CC Voltage on A0, A1, A2, L0, L1, H0, H1, and WP Relative to GND................-0.5V to ...
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Dual, 64-Position Nonvolatile Digital Potentiometer with Buffered Outputs PROGRAMMABLE-GAIN AMPLIFIER CHARACTERISTICS (V = +3.0V to +5.5V -40°C to +85°C PARAMETER SYMBOL Common-Mode Input Voltage Gain Output Voltage Range Power-Supply Rejection Ratio Output Source Current I OUT:SOURCE ...
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Dual, 64-Position Nonvolatile Digital Potentiometer with Buffered Outputs NONVOLATILE MEMORY CHARACTERISTICS (V = +3.0V to +5.5V.) CC PARAMETER SYMBOL EEPROM Write Cycles Note 1: All voltages are referenced to ground. Note 2: I specified assuming control pins are connected as ...
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Dual, 64-Position Nonvolatile Digital Potentiometer with Buffered Outputs (T = +25°C, unless otherwise noted.) A NORMALIZED POT END-END RESISTANCE vs. TEMPERATURE 1 0.8 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 -1.0 -40 - ...
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... DS3908 address to be customized 2 for applications with multiple I C devices, and allow up to eight DS3908s to be placed on the same I The potentiometer positions are saved in EEPROM, and are recalled during each power-up to provide non- volatile position settings. Once the settings are written, the write-protect pin prevents accidental writes to the potentiometers ...
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... I C Serial Interface Description section. Potentiometer Control The potentiometers of the DS3908 have 64 taps with 63 resistive elements separating them. Thus, the most and least significant wiper positions connect the amplifier to the voltages at the high and low terminals of the poten- tiometer, respectively. ...
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... EEPROM write cycle to finish. The gain of both DS3908 amplifiers is controlled by writing to register address FBh. The most significant nibble of the FBh address controls the PGA1 gain, and the least significant nibble controls the PGA0 gain. The ...
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Dual, 64-Position Nonvolatile Digital Potentiometer with Buffered Outputs Serial Interface Description The following terminology is commonly used to describe data transfers: Master Device: The master device controls the slave devices on the bus. The ...
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... If R (A1h in this case), the master is indicating it wants to read from the slave incorrect slave address is written, the DS3908 will assume the master is communicating with another I device and ignore the communication until the next start condition is sent. ...
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... Dual, 64-Position Nonvolatile Digital Potentiometer with Buffered Outputs The total error in a reading from the DS3908 can be calculated using the following formula: PotVoltage = (PotCode / 63 Error = (INL / 63 – V POT ERR H Error = Gain x V OFFSET OFF Error = PotVoltage x Gain GAIN ...