Datasheet

V
BIAS1
V
BIAS2
V +
IN
V -
IN
ClassAB
Control
Circuitry
V
O
V-
(Ground)
V+
Reference
Current
5kW
OPAx340
10mAmax
V+
V
IN
V
OUT
I
OVERLOAD
OPA340-EP
SBOS433A –AUGUST 2008–REVISED APRIL 2011 www.ti.com
Figure 24. Simplified Schematic
Figure 25. Input Current Protection for Voltages Exceeding the Supply Voltage
moderate resistive loads (2 kΩ to 50 kΩ), the output
RAIL-TO-RAIL OUTPUT
can swing to within a few tens of millivolts from the
supply rails and maintain high open-loop gain. See
A class AB output stage with common-source
the typical characteristic curve Output Voltage Swing
transistors is used to achieve rail-to-rail output. For
vs Output Current.
light resistive loads (> 50 kΩ), the output voltage is
typically a few millivolts from the supply rails. With
10 Copyright © 2008–2011, Texas Instruments Incorporated