Input | Output | Supply | ||||
---|---|---|---|---|---|---|
ViMin | ViMax | VoMin | VoMax | Vcc | Vee | Vref |
100mVpp | 50Vpp | 1mVpp | 500mVpp | 15V | –15V | 0V |
This tunable band-pass attenuator reduces signal level by –40dB over the frequency range from 10Hz to 100kHz. It also allows for independent control of the DC output level. For this design, the pole frequencies were selected outside the pass band to minimize attenuation within the specified bandwidth range.
DC Simulation Results
The amplifier passes DC voltages applied to the noninverting pin up to the common mode limitations of the op amp (±13V in this design)
Texas Instruments, Simulation for Band Pass Filtered Inverting Attenuator Circuit, circuit SPICE simulation file
Texas Instruments, Bandpass-Filtered -40-DB Attenuator, Less than 0.1-DB Error, reference design
OPA1612 | |
---|---|
Vss | 4.5V to 36V |
VinCM | Vee+2V to Vcc–2V |
Vout | Vee+0.2V to Vcc–0.2V |
Vos | 100µV |
Iq | 3.6mA/Ch |
Ib | 60nA |
UGBW | 40MHz |
SR | 27V/µs |
#Channels | 1 and 2 |
OPA1612 |
OPA172 | |
---|---|
Vss | 4.5V to 36V |
VinCM | Vee–100mV to Vcc–2V |
Vout | Rail-to-rail |
Vos | 200µV |
Iq | 1.6mA/Ch |
Ib | 8pA |
UGBW | 10MHz |
SR | 10V/µs |
#Channels | 1, 2, and 4 |
OPA172 |
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