TSH72 STMicroelectronics, TSH72 Datasheet - Page 23
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TSH72
Manufacturer Part Number
TSH72
Description
Rail-to-rail video op-amp
Manufacturer
STMicroelectronics
Datasheet
1.TSH70.pdf
(33 pages)
Specifications of TSH72
3db Bandwidth
90MHz
Gain Bandwidth Product
70MHz
Slew Rate
100V/ms
Output Current
up to 55mA
Low Distortion, Thd
0.1%
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
TSH72CDT
Manufacturer:
ST
Quantity:
20 000
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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