DS1881 Maxim Integrated Products, DS1881 Datasheet
DS1881
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DS1881 Summary of contents
Page 1
... Option 2 has 32 logarithmic steps plus mute and pro- vides software compatibility with the DS1808. When Configuration Option 2 is used in combination with the 16-pin SO package, the DS1881 is both software and pin compatible with the DS1808 in 5V applications. Notebook and PC Audio Portable Audio Equipment ...
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Dual NV Audio Taper Digital Potentiometer ABSOLUTE MAXIMUM RATINGS Voltage SDA, and SCL Relative to GND .....-0.5V to +6. Relative Voltage on A2, A1, A0, and to GND .................-0. 0.5V), not to ...
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Dual NV Audio Taper Digital Potentiometer ANALOG POTENTIOMETER CHARACTERISTICS (V = +2.7V to +5.5V +4.5V to +5.5V PARAMETER End-to-End Resistance End-to-End Resistance Tolerance Ratiometric Temperature Coefficient End-to-End Resistance Temperature Coefficient Wiper Resistance Absolute Attenuation Tolerance ...
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... SDA = SCL = Note crossing detection has timed out. Note 5: The DS1881 will not obstruct the SDA and SCL lines not violate their minimum and maximum input voltage levels. Note 6: Guaranteed by design. Note 7: Above Position 50, these are typical maximum. Guaranteed by characterization. ...
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Dual NV Audio Taper Digital Potentiometer ( +5.0V +25°C POTENTIOMETER 0 (CONFIGURATON 1) ATTENUATION vs. SETTING 0 -20.0 -40.0 -60.0 -80.0 -100 SETTING (DEC) POTENTIOMETER ...
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Dual NV Audio Taper Digital Potentiometer ( +5.0V +25°C THD+N vs. FREQUENCY (0dB) 0.0018 0.0016 0.0014 0.0012 0.0010 0.0008 0.0006 0.0004 0.0002 0 0.01 0.1 1 FREQUENCY (kHz) PIN NAME 1 GND ...
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... Dual NV Audio Taper Digital Potentiometer SDA SCL INTERFACE A0 CE POTENTIOMETER 0 VALUE H0 W0 ZERO-CROSSING L0 DETECTOR UPDATE _____________________________________________________________________ V DD CONFIGURATION REGISTER POTENTIOMETER SETTING DS1881 REGISTERS POTENTIOMETER 1 DECODER VALUE ZERO-CROSSING DETECTOR UPDATE Block Diagram GND GND ...
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... When the zero-crossing detec- tion feature is not enabled, the DS1881 will allow wiper movement as soon as the DS1881 has issued the acknowledge to the master-controlling device. ...
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Dual NV Audio Taper Digital Potentiometer Table 2. Configuration Option 2 TAP POSITION ATTENUATION (dB ...
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Dual NV Audio Taper Digital Potentiometer Potentiometer Wiper Setting are the values of the two MSBs of the Command Byte, then the wiper settings of the poten- tiometers are to be programmed. The lower 6 LSBs ...
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Dual NV Audio Taper Digital Potentiometer Configuration Register entered as the value of the two MSBs of the Command Byte, then the Configuration Register modified. The three LSBs of the Configuration CONFIGURATION REGISTER Factory ...
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... SLAVE ADDRESS BYTE Potentiometer 0 is the first returned from the DS1881 then followed by the value of Potentiometer 1 and then the value of the Configuration Register. Once the 8 bits of the Configuration Register have been sent, the master needs to issue an acknowledge, unless it is the last byte to be read, in which case the master issues a not acknowledge ...
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... Dual NV Audio Taper Digital Potentiometer Writing Command Byte Values An example of writing to the DS1881 is shown in Figure 2. The DS1881 has one write command that is used to change the Potentiometer Wiper Setting registers and the Configuration Register. All write operations begin with a START from the master, followed by a slave address byte ...
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Dual NV Audio Taper Digital Potentiometer setup time (see Figure 4) before the next rising edge of SCL during a bit read. The device shifts out each bit of data on SDA at the falling edge of the previous SCL ...
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... It is possible to take advantage of that phenomenon by repeatedly addressing the DS1881, which allows the next page to be written as soon as the DS1881 is ready to receive the data. The alternative to acknowledge polling is to wait for a maxi bus mum period of t again to the device ...
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... Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2006 Maxim Integrated Products is a registered trademark of Dallas Semiconductor Corporation. Heaney SDA is an open-collector output on the DS1881 that requires a pullup resistor to realize high logic levels. A master using either an open-collector output with a pullup resistor or a push-pull output driver can be uti- lized for SCL ...