TSH73 STMicroelectronics, TSH73 Datasheet - Page 23

• Manufacturer Part Number: TSH73
• Description: Rail-to-rail video op-amp with standby
• Manufacturer: STMicroelectronics

Specifications of TSH73

• 3db Bandwidth: 90MHz
• Gain Bandwidth Product: 70MHz
• Slew Rate: 100V/ms
• Output Current: up to 55mA
• Low Distortion, Thd: 0.1%

TSH70,71,72,73,74,75
5.4
Table 7.
Precautions when operating on an asymmetrical supply
The TSH7X can be used with either a dual or a single supply. If a single supply is used, the
inputs are biased to the mid-supply voltage (+V
designed, in order to reject any noise present on the supply rail.
As the bias current is 15uA, you must carefully choose the resistance R1 so as not to
introduce an offset mismatch at the amplifier inputs.
Figure 49. Schematic of asymmetrical (single) supply
R1 = 10K Ω is a typical and convenient value. C1, C2, C3 are bypass capacitors that filter
perturbations on V
and C2 = C3 = 100uF.
R2, R3 are such that the current through them must be greater than 100 times the bias
current. Therefore, we set R2 = R3 = 4.7K Ω .
Diff Phase Step1
Diff Phase Step2
Diff Phase Step3
Diff Phase Step4
Diff Phase Step5
IN
Diff Gain Step1
Diff Gain Step2
Diff Gain Step3
Diff Gain Step4
Diff Gain Step5
Diff Phase pos
Diff Phase neg
Diff Phase pp
Parameter
C
R1
in
Video results
R2
R3 C1
CC
Vcc+
, as well as for the input and output signals. We choose C1 = 100nF
C2
C3
V
CC
R4
Value
+
-
-0.5
-0.7
-0.3
-0.1
-0.4
-0.2
-0.2
-0.1
-0.1
-0.2
=
0.2
0
0
R5
±
Cf
2.5V
C
out
CC
OUT
/2). This bias network must be carefully
R
L
V
CC
Value
-0.3
-0.6
-0.5
-0.3
-0.5
-0.4
-0.4
-0.4
-0.3
-0.1
0.1
0.5
0.1
=
±
5V
Testing Conditions
Unit
deg
deg
deg
deg
deg
deg
deg
deg
%
%
%
%
%
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