AD8260

Rev. 0 | Page 16 of 32

TEST CIRCUITS

INRP

–

+

NETWORK ANALYZER

VOCM

453Ω

INRN

50Ω IN

OUT

0.1µF

5pF

0.1µF

50Ω

AD8260—HIGH CURRENT DRIVER

TXFB

TXOP

VMDO

50Ω

0.1µF

Figure 51. Test Circuit for Frequency Response of the High Current Driver

IN

50Ω

INRP

–

+

VOCM

INRN

0.1µF

0.1µF

0.1µF

TXFB

TXOP

–

+

VMDO

SPECTRUM

ANALYZER

AD8260—HIGH CURRENT DRIVER

Figure 52. Test Circuit for Input-Referred and Output-Referred Noise of the High Current Driver

NETWORK ANALYZER

WITH S-PARAMETER MODE

IN

50Ω

INRP

VOCM

INRN

0.1µF

0.1µF

TXFB

TXOP

+3.3V

–3.3V

–

+

AD8260—HIGH

CURRENT DRIVER

Figure 53. Test Circuit for Output Impedance of the High Current Driver

SIGNAL

GENERATOR

50Ω

LP

FILTER

IN

50Ω

INRP

VOCM

INRN

0.1µF

0.1µF

0.1µF

TXFB

TXOP

VMDO

SPECTRUM

ANALYZER

50Ω

50Ω

1:1

AD8260—HIGH CURRENT DRIVER

–

+

Figure 54. Test Circuit for Harmonic Distortion of the High Current Driver