Hi Raymond,
For the actual noise measurement, we tried our best to avoid any variables. All the tests are on the same battery power. For noise gain=1 and 11, use the same opa189.
I just got a TI-PLABS-AMP-EVM kit and measured the noises of:
our measurement…
Part Number: OPA189 Other Parts Discussed in Thread: OPA182 Tool/software: Hi, we are using a TI OPA189 with a typical non-inverting amplifier structure with following values:
With OPA189 Pin 3 connected to ground (AGND) and R140 set as 12KOhm we get…
Part Number: OPA189 Other Parts Discussed in Thread: OPA387 , TINA-TI , , OPA182 , OPA187 , DAC8831 Tool/software: Team,
I am considering using the OPAx189 as a low-pass filter buffer. This would just be a resistor and capacitor LPF, with an OPAx189 as a…
Part Number: OPA189 Hi Team,
I am posting this on behalf of the customer.
The datasheet for OPA189 has an inconsistency regarding CMRR. The CMRR is guaranteed >146dB for a +-18v supply and -18.1V<Vin<15.5V . I therefore calculate that the offset voltage…
Part Number: OPA189 Hi,
The question of input current noise density was usefully answered here: https://e2e.ti.com/support/amplifiers-group/amplifiers/f/amplifiers-forum/1269686/opa189-input-current-noise-density-spectrum-of-opax189?tisearch=e2e-sitesearch&keymatch…
Part Number: OPA189 Other Parts Discussed in Thread: OPA192 , OPA205 Hello –
I’m working on a design using the OPA189 where from time to time the output may unintentionally get loaded down aggressively, taking the OPA189 into its current limit. I…
Part Number: OPA189 Other Parts Discussed in Thread: OPA847 , OPA828 , OPA2156 I am looking for an amplifier that I can use for a TIA stage (~400 ohm gain) as well as a for a summing/difference stage and inverting stage that will satisfy the following requirements…
Part Number: OPA189 Hi, I need a low-noise amplifier at 3 Hz. OPA189 has an impressive 5.2 nV/sqrt(Hz),
but the input current noise is specified only at 1 kHz. Is it also flat or does it increase towards lower frequencies?
Part Number: OPA189 Dear TI team
I have a question related to the content of the thread below.
https://e2e.ti.com/support/amplifiers-group/amplifiers/f/amplifiers-forum/898699/opa189-vf-value-of-internal-diode/3328628?tisearch=e2e-sitesearch&keymatch…
Part Number: OPA189 Other Parts Discussed in Thread: OPA192 I'm currently designing a signal conditioning block to transmit signals from 1Hz to 1.5kHz using OPA189 components.
However, I'm experiencing a problem where the passed signal keeps fluctuating…
