THS4521 datasheet(29/54 Pages) TI1

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VOUT+

VIN–

VIN+

0.22 μF

RIT

Output to

Test Equipment

Input From 50-Ω

Test Equipment

No Connection

0.22 μF

49.9 Ω

VOUT–

Installed to Balance

Amplifier

VS+

THS4531

VS–

Output to

Test Equipment

0.22 μF

VOCM

–

VIN+

VOUT+

VIN–

0.22 μF

ROT

RIT

Input From 50-Ω

Test Equipment

No Connection

VOUT–

VS+

THS4531

VS–

Measure With

Diff Probe

Cal Diff Probe

–

VOCM

THS4531

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SLOS358B – SEPTEMBER 2011 – REVISED MARCH 2012

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.

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 analyzer’s

DC offset input. For both CMRR and PSRR, the output is probed using a high impedance differential probe

across ROT.

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