op-amp opa2134 single supply question

Thread Starter

abc77

Joined May 10, 2017
59
I want to build LPF using opa2134 as shown in PCM1789 datasheet(attached is picture).

What would be the supply voltage(s)? OPA2134 seems to support single supply voltage, if so can i use 5V for this?
 

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OBW0549

Joined Mar 2, 2015
3,566
I want to build LPF using opa2134 as shown in PCM1789 datasheet(attached is picture). What would be the supply voltage(s)?
The circuit you provided would almost certainly be operated from +/-15V supplies, to accommodate the input voltages shown.

OPA2134 seems to support single supply voltage, if so can i use 5V for this?
No. Looking at the data sheet, it's clear that neither the Input Common-Mode Voltage range nor the Voltage Output range are adequate for 5V single-supply operation.
 

AnalogKid

Joined Aug 1, 2013
11,056
What would be the supply voltage(s)? OPA2134 seems to support single supply voltage, if so can i use 5V for this?
The data sheet says +/-2.5 V right on the front page, but the inside data indicates that this works only for a very low input voltage and relatively little gain.
Datasheet: maybe.
Real world: no.

ak
 

kubeek

Joined Sep 20, 2005
5,795
LM741 is almost 50 years old now (introduced 1968), and it won´t work with 5V supply, more like +/-15V. Use some modern part if you want modern supply voltage :)
 

Thread Starter

abc77

Joined May 10, 2017
59
i am failing to understand, where does the ground connected to capacitor go? J1 is the power supply for op-amp
 

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kubeek

Joined Sep 20, 2005
5,795
Like I said, there is no way to use TL072 with 5V supply voltage. You would need another circuit to generate either -5V (such as ICL7660), or a boost converter to generate +10V out of the +5V you have.
 

Thread Starter

abc77

Joined May 10, 2017
59
Like I said, there is no way to use TL072 with 5V supply voltage. You would need another circuit to generate either -5V (such as ICL7660), or a boost converter to generate +10V out of the +5V you have.
I meant if I use 10V supply how to connect TL072 to generate power supply rail for OPA2134? can u provide schematic?
 

Bordodynov

Joined May 20, 2015
3,181
Hi abc77.
I have offered you an electronic circuit with unipolar power supply and with voltage ranges of 5 to 30 volts.
See #18.
You can use other opamp. If you understand how my circuit works, then you can simplify it at high voltages.
 
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