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…
HI Hoonmin,
The OPA189 is a zero-drift amplifier or chopper amplifier. Chopper amplifiers like OPA189 may need to match the equivalent input impedances between the op-amp positive and negative input terminals in order to eliminate the commutation of the…
Part Number: OPA189 I need help understanding an odd signal I'm encountering while using two OPA189s. A simplified design is below.
DAC_1 is held constant at 2.5V. Since U1:IN+ is at 2.5V then U1:IN+ is also 2.5V and V_SHIFT, R1_s and R1_f are such…
Part Number: OPA189 Other Parts Discussed in Thread: OPA182 , OPA192 , I am using the opa189dr as an output buffer for a DAC on a low noise board:
I have noticed switching artifacts at 280kHz when measuring the analog output:
I could not find this frequency…
Hi,
KB said: If I'm reading this correctly, the first circuit is with the 10K channel on and the second is with all channels off.
Yes, I started with what I assumed to be the worst case.
KB said: I noticed you did not include the isolation resistor…
Part Number: OPA189 Other Parts Discussed in Thread: LM7705 , TINA-TI , OPA182 , OPA192 , LM2674 Hi Experts,
Good day. Seeking you assistance on this:
I have used OPA189 for amplifying photo diode voltage using a non-inverting amplifier configuration. I did…
Part Number: OPA189 Other Parts Discussed in Thread: OPA192 , OPA191 , OPA196 Dear sir,
Good day,
Please find the attached Circuit diagram.
Actually we are using opa189.
we choosing the input resistor value for 10M ohm and given the know input voltage …