OP113_15 Datasheet, PDF (18/24 Pages) Analog Devices – Low Noise, Low Drift Single-Supply Operational Amplifiers

OP113/OP213/OP413
Figure 51 shows the OPx13 family response to a 10 mV
overdrive signal when operating in open loop. The top trace
shows the output rising edge has a 15 μs propagation delay,
whereas the bottom trace shows a 7 μs delay on the output
falling edge. This ac response is quite acceptable in many
applications.
+2.5V
0V
–2.5V
t_r = t_f = 5ms
±10mV OVERDRIVE
5V
25kΩ
100Ω
+
1/2
OP113
–
2V
5µs
100
90
10
0%
2V
Figure 51. Precision Comparator
The low noise and 250 μV (maximum) offset voltage enhance
the overall dc accuracy of this type of comparator. Note that zero-
crossing detectors and similar ground referred comparisons can be
implemented even if the input swings to −0.3 V below ground.
+IN
9V 9V
–IN
OUT
Figure 52. OP213 Simplified Schematic
Rev. F | Page 18 of 24