OPA365-Q1_16 Datasheet, PDF (20/22 Pages) Texas Instruments – Single-Supply Operational Amplifiers

OPA365-Q1, OPA2365-Q1
SBOS512D – MARCH 2010 – REVISED DECEMBER 2015
www.ti.com
10 Power Supply Recommendations
The OPAx365-Q1 family of devices is specified for operation from 2.2 V to 5.5 V (±1.1 V to ±2.75 V); many
specifications apply from –40°C to 125°C. The Typical Characteristics presents parameters that can exhibit
significant variance with regard to operating voltage or temperature.
CAUTION
Supply voltages larger than 7 V can permanently damage the device (see 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 Layout
Guidelines.
11 Layout
11.1 Layout Guidelines
The OPA365-Q1 is a wideband amplifier. To realize the full operational performance of the device, good high-
frequency printed-circuit-board (PCB) layout practices are required. Low-loss 0.1-µF bypass capacitors must be
connected between each supply pin and ground as close to the device as possible. The bypass capacitor traces
should be designed for minimum inductance.
11.2 Layout Example
RIN
VIN
+
RG
VOUT
RF
(Schematic Representation)
Run the input traces
as far away from
the supply lines
as possible
Place components
close to device and to
each other to reduce
parasitic errors
RG
GND
RF
NC
±IN
VIN
+IN
RIN
V±
NC
V+
OUT
NC
VS+
GND
Use low-ESR, ceramic
bypass capacitor
Only needed for
dual-supply
operation
GND
VS±
(or GND for single supply)
VOUT
Figure 36. Layout Recommendation
Ground (GND) plane on another layer
20
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