Datasheet

1/2
OPA2695
+5V
+V
S
DIS
50 LoadW
50W
R
G
52.8W
806W
806W
20W
0.1 Fm
0.1 Fm
0.1 Fm
V
I
R
F
422W
V
O
1000pF
+
6.8 Fm0.1 Fm
1000pF
1000pF
OPA2695
www.ti.com ...................................................................................................................................................... SBOS354A – APRIL 2008 – REVISED AUGUST 2008
Figure 71 shows the ac-coupled, single +5V supply, capability, operation down to a 3V supply is allowed.
gain of – 8V/V circuit configuration used as a basis for At a +3V supply, the input common-mode range is
the +5V only Typical Characteristics . In this case, the 0V. However, for the inverting configuration of a
midpoint dc bias on the noninverting input is also current-feedback amplifier, wideband operation is
decoupled with an additional 0.1 µ F decoupling retained even with the input stage saturated.
capacitor. This decoupling configuration reduces the
The single-supply test circuits of Figure 70 and
source impedance at higher frequencies for the
Figure 71 show +5V operation. These same circuits
noninverting input bias current noise. This 2.5V bias
can be used over a single-supply range of +5V to
on the noninverting input pin appears on the inverting
+12V. Operating on a single +12V supply, with the
input pin and, because R
G
is dc blocked by the input
absolute maximum supply voltage specification of
capacitor, also appears at the output pin. One
+13V, gives adequate design margin for the typical
advantage to inverting operation is that because
± 5% supply tolerance.
there is no signal swing across the input stage, higher
slew rates and operation to even lower supply
voltages are possible. To retain a 1V
PP
output
Figure 71. AC-Coupled, G = – 8V/V, Single-Supply Specifications and Test Circuit
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