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| THS4531A Datasheet, PDF (25/51 Pages) Texas Instruments – Ultra Low Power, Rail-to-Rail Output, Fully-Differential Amplifier | |||
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VIN+
Input From 50-
Test Equipment
RG
PD
RIT
0.22 F
VIN±
No Connection
Installed to Balance
Amplifier
0.22 F
49.9
0.22 F
RG
RIT
THS4531A
SLOS823A â DECEMBER 2012 â REVISED JANUARY 2013
RF
RO
VS+
+
VOCM
±
THS4531A
VS±
RO
RF
VOUT±
Output to
Test Equipment
VOUT+
Output to
Test Equipment
Figure 69. Slew Rate, Transient Response, Settling Time, ZO, Overdrive Recovery, VOUT Swing, and Turn-
on/off Test Circuit
Common-Mode and Power Supply Rejection
The circuit shown in Figure 70 is used to measure the CMRR. The signal from the network analyzer is applied
common-mode to the input.
VIN+
Input From 50-
Test Equipment
RG
RF
RO
VIN±
No Connection
0.22 F
RG
VS+
+
VOCM
±
VS±
VOUT±
THS4531A
VOUT+
RO
ROT
RF
RIT
Cal Diff Probe
Measure With
Diff Probe
Figure 70. CMRR Test Circuit
Figure 71 is used to measure the PSRR of VS+ and VS-. The power supply is applied to the network analyzerâs
DC offset input. For both CMRR and PSRR, the output is probed using a high impedance differential probe
across ROT.
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