OPA171_15 Datasheet, PDF (23/43 Pages) Texas Instruments – Single-Supply, SOT553, General-Purpose Operational Amplifiers

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OPA171, OPA2171, OPA4171
SBOS516E – SEPTEMBER 2010 – REVISED JUNE 2015
9 Power Supply Recommendations
The OPAx171 family of devices 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 Specifications section.
CAUTION
Supply voltages larger than 40 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 high-
impedance power supplies. For detailed information on bypass capacitor placement, see the Layout Guidelines
section.
10 Layout
10.1 Layout Guidelines
For best operational performance of the device, good printed--circuit board (PCB) layout practices are
recommended. Low-loss, 0.1-µF bypass capacitors should be connected between each supply pin and ground,
placed as close to the device as possible. A single bypass capacitor from V+ to ground is applicable to single-
supply applications.
10.2 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
Ground (GND) plane on another layer
Figure 46. Operational Amplifier Board Layout for Noninverting Configuration
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