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THS4521 Datasheet(PDF) 27 Page - Texas Instruments

Part # THS4521
Description  THS452x Very Low Power, Negative Rail Input, Rail-To-Rail Output, Fully Differential Amplifier
PDF  71 Pages
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Manufacturer  TI2 [Texas Instruments]
Direct Link  https://www.ti.com
Logo TI2 - Texas Instruments

THS4521 Datasheet(HTML) 27 Page - Texas Instruments

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THS452x
24.9 W
953 W
1kW
1kW
1kW
1kW
52.3 W
52.3 W
24.9 W
V
OCM
PD
Measurewith
Differential
Probe
AcrossR
OT
Open
Open
Open
Open
Network
Analyzer
Power
Supply
CalibratedDifferential
Probe
Across
V
S+ andGND
V
S+
V
S-
0.22 F
m
0.22 F
m
THS452x
24.9 W
953 W
1kW
1kW
1kW
1kW
52.3 W
24.9 W
V
OCM
V
IN+
PD
Measurewith
Differential
Probe
Calibrated
Differential
Probe
Open
Open
From
Network
Analyzer
V
S+
V
S-
0.22 F
m
0.22 F
m
THS4521, THS4522, THS4524
www.ti.com
SBOS458H – DECEMBER 2008 – REVISED JUNE 2015
Feature Description (continued)
8.3.4 Common-Mode and Power-Supply Rejection
The circuit shown in Figure 57 is used to measure the CMRR. The signal from the network analyzer is applied
common-mode to the input. Figure 58 is used to measure the PSRR of VS+ and VS–. The power supply under
test is applied to the network analyzer dc offset input. For both CMRR and PSRR, the output is probed using a
Tektronix high-impedance differential probe across the 953-
Ω resistor and referred to the amplifier output by
adding back the 0.42-dB as a result of the voltage divider on the output. For these tests, the resistors are
matched for best results.
Figure 57. CMRR Test Circuit
Figure 58. PSRR Test Circuit
Copyright © 2008–2015, Texas Instruments Incorporated
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Product Folder Links: THS4521 THS4522 THS4524



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