OPA1632 Datasheet, PDF (15/30 Pages) Texas Instruments – High-Perfomance, Fully-Differential AUDIO OP AMP

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OPA1632
SBOS286C – DECEMBER 2003 – REVISED OCTOBER 2015
9 Power Supply Recommendations
The OPA1632 device was designed to be operated on power supplies ranging from ±2.5 V to ±15 V. Single
power supplies ranging from 5 V to 30 V can also be used. TI recommends using power-supply accuracy of
5%, or better. When operated on a board with high-speed digital signals, it is important to provide isolation
between digital signal noise and the analog input pins. The OPA1632 is connected to power supplies through
pin 3 (V_CC+) and pin 6 (V_CC-). Each supply pin should be decoupled to GND as close to the device as
possible with a low-inductance, surface-mount ceramic capacitor of approximately 10 nF. When vias are
used to connect the bypass capacitors to a ground plane the vias should be configured for minimal parasitic
inductance. One method of reducing via inductance is to use multiple vias. For broadband systems, two
capacitors per supply pin are advised.
To avoid undesirable signal transients, the OPA1632 device should not be powered on with large inputs
signals present. Careful planning of system power on sequencing is especially important to avoid damage to
ADC inputs when an ADC is used in the application.
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