OPA365 Datasheet, PDF (7/16 Pages) Burr-Brown (TI) – 2.2V, 50MHz, Low-Noise, Single-Supply Rail-to-Rail OPERATIONAL AMPLIFIERS

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APPLICATIONS INFORMATION
OPERATING CHARACTERISTICS
The OPA365 amplifier parameters are fully specified
from +2.2V to +5.5V. Many of the specifications apply
from −40°C to +125°C. Parameters that can exhibit sig-
nificant variance with regard to operating voltage or
temperature are presented in the Typical Characteris-
tics.
GENERAL LAYOUT GUIDELINES
The OPA365 is a wideband amplifier. To realize the full
operational performance of the device, good high-fre-
quency printed circuit board (PCB) layout practices are
required. Low-loss, 0.1µF 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.
BASIC AMPLIFIER CONFIGURATIONS
As with other single-supply op amps, the OPA365 may
be operated with either a single supply or dual supplies.
A typical dual-supply connection is shown in Figure 1,
which is accompanied by a single-supply connection.
The OPA365 is configured as a basic inverting amplifier
with a gain of −10V/V. The dual-supply connection has
an output voltage centered on zero, while the single−
supply connection has an output centered on the com-
mon-mode voltage V_CM. For the circuit shown, this volt-
age is 1.5V, but may be any value within the common-
mode input voltage range. The OPA365 V_CM range
extends 100mV beyond the power-supply rails.
OPA365
OPA2365
SBOS365A − JUNE 2006 − REVISED JULY 2006
R₂
10kΩ
R₁
1kΩ
V_IN
+1.5V
C₁
100nF
V+
OPA365
V−
C₂
100nF
V_OUT
−1.5V
a) Dual Supply Connection
R₂
10kΩ
R₁
1kΩ
V_IN
+3V
C₁
100nF
V+
OPA365
V−
V_OUT
V_CM = 1.5V
b) Single−Supply Connection
Figure 1. Basic Circuit Connections
7