JAJSMD4D December 2003 – March 2022 OPA1632
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 a 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+) and pin 6 (V-). 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.