Hi ,

Would like to know if there specification on output High and Low for Different Rout condition.

Looking information for 2.6k to 4.3k

Data sheet specifies only for Rout 3.3k

Thanking you

With best regards and wishes

Hi ,

Would like to know if there specification on output High and Low for Different Rout condition.

Looking information for 2.6k to 4.3k

Data sheet specifies only for Rout 3.3k

Thanking you

With best regards and wishes

Hello Srivatsa,

The AD8214 is a current out device. As stated in the specifications table of the datasheet, the output current will go from a minimum of 0.8mA to a maximum of 1.2mA when high, and about +/-5uA when the output is low. This should be the same for any output resistor that you choose to use. However, one thing you should look out for is the supply voltage, which needs to be 2.4V higher than the output voltage to keep correct operation of the regulator. Footnote 3 on p.3 of the datasheet states that,

*3 The voltage at OUT must not be allowed to exceed the VREG voltage, which is always 2.4 V less than the supply. For example, when the supply voltage is 5 V and the output current is 1 mA, the load resistor must not be more than (5 V – 2.4 V)/{1 mA × (1 + 20%)}, or 2.17 kΩ, to ensure the signal does not exceed 2.6 V. As the supply increases, the output signal also can be increased, by the same amount.*So, say for your maximum case of 4.3kohm load resistor, the supply should be set to 2.4V +(4.3k*1.2mA) which is 7.56V to cover the worst case.

I hope this helps. May I ask what your application will be?

Thanks,

Kris

Hello Srivatsa,

The AD8214 is a current out device. As stated in the specifications table of the datasheet, the output current will go from a minimum of 0.8mA to a maximum of 1.2mA when high, and about +/-5uA when the output is low. This should be the same for any output resistor that you choose to use. However, one thing you should look out for is the supply voltage, which needs to be 2.4V higher than the output voltage to keep correct operation of the regulator. Footnote 3 on p.3 of the datasheet states that,

3 The voltage at OUT must not be allowed to exceed the VREG voltage, which is always 2.4 V less than the supply. For example, when the supply voltage is 5 V and the output current is 1 mA, the load resistor must not be more than (5 V – 2.4 V)/{1 mA × (1 + 20%)}, or 2.17 kΩ, to ensure the signal does not exceed 2.6 V. As the supply increases, the output signal also can be increased, by the same amount.So, say for your maximum case of 4.3kohm load resistor, the supply should be set to 2.4V +(4.3k*1.2mA) which is 7.56V to cover the worst case.

I hope this helps. May I ask what your application will be?

Thanks,

Kris