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TLV4112: TLV4112 Rating

Abdelrhman Mohamed
Prodigy 40 points
Part Number: TLV4112

This could be me struggling with reading the datasheets, but I couldn't find the ratings for this amplifier. 

I want to power this amplifier with +/-5V power supply. In page 3 (absolute maximum ratings), the differential input voltage is +/-VDD, and VDD is 7V. However, in the layout in page 2, it shows VDD and ground. 

Does this mean I can use +/-5V. Or can do I have to use lower voltages i.e. +/-3V?

Also, does the power supply have to have high current rating if I am using high output current. For example, If I am drawing 300mA out of the output, does the power supply have to match this (>300mA), or does it just satisfy the input current (700uA/channel typical)?

Thank you very much in advance,

  • 0
    TI__Guru* 93105 points

    Hello ,

    The maximum voltage that can be applied between the TLV4112 VDD and GND pins is 7 V.  However, the recommended power supply range is from 2.2 to 6 V. It can be used in single supply mode where VDD is set to +2.2 V to +6 V, and the GND pin is connected to ground (0 V).

    Additionally, it may be operated with dual supplies of +/-1.1 V (2.2 V total, to +/-3 V (6 V). Thus, it is evident that +/-5 V, which is a total of 10 V exceeds the absolute maximum of 7 V.

    The high current supplied to the load comes through one, or the other power supply pin. If you need to source 300 mA from the output to a load this current is supplied from the VDD pin. If the output sinks -300 mA, from a load, that current flows out the GND pin to the negative supply.

    Regards, Thomas

    Precision Amplifiers Applications Engineering