OPA336N Burr-Brown Corporation, OPA336N Datasheet - Page 8

• Manufacturer Part Number: OPA336N
• Description: Single-supply, Micropower CMOS Operational Amplifiers Microamplifier Series
• Manufacturer: Burr-Brown Corporation

For example, with R
perform well with capacitive loads in excess of 1000pF
(Figure 4). Without R
350pF for these conditions (see Figure 5).
Alternatively, the resistor may be connected in series with
the output outside of the feedback loop. However, if there is
a resistive load parallel to the capacitive load, it and the
series resistor create a voltage divider. This introduces a DC
error at the output. However, this error may be insignificant.
For instance, with R
about a 0.1% error at the output.
Figure 5 shows the recommended operating regions for the
OPA336. Decreasing the load resistance generally improves
capacitive load drive. Figure 5 also illustrates how stability
differs depending on where the resistive load is connected.
With G = +1 and R
can typically drive 500pF. Connecting the same load to
ground improves capacitive load drive to 1000pF.
®
OPA336, 2336, 4336
L
L
= 10k connected to V
= 100k and R
L
S
, capacitive load drive is typically
= 25k , OPA336 series op amps
S
= 100 , there is only
S
/2, the OPA336
8
FIGURE 5. Stability—Capacitive Load vs Resistive Load.
100
10k
1k
5
R
L
10
G = +1
to Ground
R
G = +1
L
to V
V
Resistive Load (k )
S
S
/2
= +5V, V
Operation Above Selected Gain
Curve Not Recommended
R
L
O
G = +2
to Ground
= V
S
/2
100