Hello, Uttam. [quote user="Uttam Sahu"]The maximum voltage allowed for every resistor terminal is VDD.[/quote] I see thanks for your reply. Also, appreciate that you recommended an alternative product. I'm a bit confused since I'm new with the digital potentiometers. [quote user="Uttam Sahu"]The TPL0501 has a floating resistor configuration. it can be used in a gain control configuration for an opamp as long as the maximum voltage at each terminal is not exceeded. [/quote] 0. I'm using the MSP-EXP430FR2355 's SAC(Smart Analog Combo) - DAC example with a high pass filter. I will apply 50 ~ 2kHz square wave signals which have positive 1.2V & negative 1.2V amplitude to the Op Amp's positive input(+, V_I). Can the TPL0102-100 or TPL0501-100 handle negative voltages as well? I checked the absolute max rating and I want to double check this. 1. I'm using a rail-to-rail Op Amp configuration (positive 10V, negative 10V). Then setting the Vss of TPL0102-100 is mandatory? I can't search the usage. 2. What do you mean by "floating resistor configuration"? I couldn't find an explanation related to that. Are you meaning there are some categories when purchasing a digital potentiometer? 3. What's the difference between TPL0501-100 vs TPL0102-100 ? Besides the number of channels or negative power supply I can't really tell the difference. 4. Can I apply the above (Figure 31) schematic when using TPL0501-100 as well? Or is this for TPL0102-100 only (or other special/non-floating digital potentiometers?
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