OPA140 Datasheet, PDF (25/44 Pages) Texas Instruments – 11-MHz JFET Op Amp

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OPA140, OPA2140, OPA4140
SBOS498B – JULY 2010 – REVISED NOVEMBER 2015
Typical Application (continued)
Software tools are readily available to simplify filter design. WEBENCH^® Filter Designer is a simple, powerful,
and easy-to-use active filter design program. The WEBENCH® Filter Designer lets you create optimized filter
designs using a selection of TI operational amplifiers and passive components from TI's vendor partners.
Available as a web based tool from the WEBENCH Design Center, WEBENCH Filter Designer allows you to
design, optimize, and simulate complete multistage active filter solutions within minutes.
8.2.3 Application Curve
20
0
-20
-40
-60
100
1k
10k
100k
1M
Frequency (Hz)
Figure 41. OPAx140 Second-Order, 25-kHz, Chebyshev, Low-pass Filter
9 Power Supply Recommendations
The OPAx140 is specified for operation from 4.5 V to 36 V (±2.25 V to ±18 V); many specifications apply from
–40°C to 125°C. Parameters that can exhibit significant variance with regard to operating voltage or temperature
are presented in the Typical Characteristics.
CAUTION
Supply voltages larger than 40 V can permanently damage the device; see the
Absolute Maximum Ratings.
Place 0.1-μF bypass capacitors close to the power-supply pins to reduce errors coupling in from noisy or high-
impedance power supplies. For more detailed information on bypass capacitor placement, see the Layout
section.
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