OPA354-Q1_15 Datasheet, PDF (22/36 Pages) Texas Instruments – OPAx354-Q1 250-MHz, Rail-to-Rail I/O, CMOS Operational Amplifiers

OPA354-Q1, OPA2354-Q1, OPA4354-Q1
SBOS492B – JUNE 2009 – REVISED DECEMBER 2014
R3
549 Ω
C2
150 pF
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R1
549 Ω
R2
1.24 kΩ
V_(V+)
V_I
C1
1 nF
Device
V_O
V_(V–)
Figure 42. Second-Order Butterworth 500-kHz Low-Pass Filter
220 pF
1.8 kΩ
19.5 kΩ 150 kΩ
V_(V+)
V_I = 1 V_RMS
3.3 nF
47 pF ^Device
V_O
V_(V–)
Figure 43. OPAx354-Q1 Configured as a Three-Pole, 20-kHz, Sallen-Key Filter
9 Power Supply Recommendations
The OPAx354-Q1 family of devices is specified for operation from 2.5 to 5.5 V (±1.25 to ±2.75 V); many
specifications apply from –40°C to 125°C. Parameters that can exhibit significant variance with regard to
operating voltage or temperature are shown in the Typical Characteristics section.
CAUTION
Supply voltages larger than 7.5 V can permanently damage the device (see the
Absolute Maximum Ratings table).
Place 0.1-μF bypass capacitors close to the power-supply pins to reduce errors coupling in from noisy or
highimpedance power supplies. For more detailed information on bypass capacitor placement, refer to the Layout
Guidelines section.
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