INA159: INA159

Neel Shah

Prodigy 60 points

Part Number: INA159
Other Parts Discussed in Thread: ADS124S08,

We are planning to use this part in our design. We are preparing the power budget.

We tried to find typical supply current in the datasheet but we couldn't find then I contact to TI support team.

They suggest posting our query to you for resolution.

Please response as quickly as possible.

over 1 year ago

0 Clemens Ladisch over 1 year ago

Guru 287370 points

The quiescent current is specified as "Quiescent Current" on p. 3 of the datasheet; it's 1.1 mA. This does not include the load current, or other deviations from the test conditions.

0 Neel Shah over 1 year ago in reply to Clemens Ladisch

Prodigy 60 points

I do not want quiescent current. I need with load current information.

0 Clemens Ladisch over 1 year ago in reply to Neel Shah

Guru 287370 points

The load current depends on your load. Please specify exactly what you want to connect to the output.

0 Neel Shah over 1 year ago in reply to Clemens Ladisch

Prodigy 60 points

Load will be ADC ADS124S08 IC inputs.

0 Clemens Ladisch over 1 year ago in reply to Neel Shah

Guru 287370 points

The ADS124S08's input current is specified as less than 2 nA, so it can be ignored.

0 Marek Lis over 1 year ago in reply to Neel Shah

TI__Guru 64530 points

The maximum INA159 load will depend on the frequency of the input signa but with LPF input filter (250ohm||16pF - see below) in front of ADS124S08, it may be neglected even for 1MHz signals (Zc=~10kohm). Thus, the maximum INA159 power dissipation for Vs of 5V with max Vin_diff of 30V (Iin=30V/200k=150uA), would be Pmax= 5V*(1.5mA+0.15mA)= 8.25mW.