tsh150i STMicroelectronics, tsh150i Datasheet - Page 4

• Manufacturer Part Number: tsh150i
• Description: Wide Bandwidth And Bipolar Inputs Single Operational Amplifier
• Manufacturer: STMicroelectronics

TSH150
TEST WAVEFORM
PRINTED CIRCUIT LAYOUT
As for any high frequency device, a few rules must
be observed when designing the PCB to get the
best performances from this high speed op amp.
From the most to the least important points :
4/6
V
in
Each power supply lead has to be by-
passed to ground with a 10nF ceramic ca-
pacitor very close to the device and a 10 F
tantalum capacitor.
To provide low inductance and low resist-
ance common return, use a ground plane
or common point return for power and sig-
nal.
All leads must be wide and as short as pos-
sible especially for op amp inputs. This is in
50%
t
t
s
d
t
r
90%
10%
0.1% of edge amplitude
EVALUATION CIRCUIT
order to decrease parasitic capacitance
and inductance.
Use small resistor values to decrease time
constant with parasitic capacitance.
Choose component sizes as small as pos-
sible (SMD).
On output, decrease capacitor load so as
to avoid circuit stability being degraded
which may cause oscillation. You can also
add a serial resistor in order to minimise its
influence.
One can add in parallel with feedback re-
sistor a few pF ceramic capacitor C
ed to optimize the settling time.
Input
50
1k
-5V
+5V
1k
10nF
C
10 F
10nF
10 F
F
50
Output
F
adjust-