SN10501 Datasheet, PDF (10/23 Pages) Texas Instruments – HIGH SPEED RAIL TO RAIL OUTPUT VIDEO AMPLIFIERS

SN10501
SN10502
SN10503
SLOS408A − MARCH 2003 − REVISED DECEMBER 2003
www.ti.com
APPLICATION INFORMATION
5V
+VS
HIGH-SPEED OPERATIONAL AMPLIFIERS
The SN1050x operational amplifiers are a family of single,
dual, and triple rail-to-rail output voltage feedback
amplifiers. The SN1050x family combines both a high slew
rate and a rail-to-rail output stage.
Applications Section Contents
50 Ω Source
VI
+
49.9 Ω
_
1.3 kΩ Rg
+
100 pF 0.1 µF 6.8 µF
VO
Rf
499 Ω
1.3 kΩ
0.1 µF 6.8 µF
100 pF
+
D Wideband, Noninverting Operation
D Wideband, Inverting Gain Operation
D Video Drive Circuits
D Single Supply Operation
D Power Supply Decoupling Techniques and
Recommendations
D Active Filtering With the SN1050x
D Driving Capacitive Loads
D Board Layout
D Thermal Analysis
D Additional Reference Material
D Mechanical Package Drawings
WIDEBAND, NONINVERTING OPERATION
The SN1050x is a family of unity gain stable rail-to-rail
output voltage feedback operational amplifiers designed
to operate from a single 3-V to 15-V power supply.
Figure 33 is the noninverting gain configuration of 2 V/V
used to demonstrate the typical performance curves.
Voltage feedback amplifiers, unlike current feedback
designs, can use a wide range of resistors values to set
their gain with minimal impact on their stability and
frequency response. Larger-valued resistors decrease the
loading effect of the feedback network on the output of the
amplifier, but this enhancement comes at the expense of
additional noise and potentially lower bandwidth.
Feedback resistor values between 1 kΩ and 2 kΩ are
recommended for most situations.
−5 V ^−VS
Figure 33. Wideband, Noninverting Gain
Configuration
WIDEBAND, INVERTING OPERATION
Since the SN1050x family are general-purpose, wideband
voltage-feedback amplifiers, several familiar operational
amplifier applications circuits are available to the designer.
Figure 34 shows a typical inverting configuration where
the input and output impedances and noise gain from
Figure 33 are retained in an inverting circuit configuration.
Inverting operation is one of the more common
requirements and offers several performance benefits.
The inverting configuration shows improved slew rates
and distortion due to the pseudo-static voltage maintained
on the inverting input.
5V
+VS
100 pF
0.1 µF
+
6.8 µF
CT
0.1 µF
RT
649 Ω
50 Ω Source
Rg
VI
1.3 kΩ
RM
52.3 Ω
+
_
Rf
1.3 kΩ
100 pF
VO
499 Ω
0.1 µF 6.8 µF
+
−5 V ^−VS
Figure 34. Wideband, Inverting Gain
Configuration
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