Inter Modulation Products

TSH80-TSH81-TSH82

12/23

3

Inter Modulation Products

The IFR2026 synthesizer generates a two tones signal (F1=180kHz, F2=280kHz); each tone

having the same amplitude level.

The HP3585 spectrum analyzer measures the inter modulation products function of the output

voltage. The generator and the spectrum analyzer are phase locked for precision

considerations.

Figure 13. Standby mode - Ton, Toff

Figure 14. Group delay

Vcc=

±2.5V, Open Loop

Gain=2, Vcc=

Figure 15. Third order inter modulation

Gain=2, Vcc=

0

2E-6

4E-6

6E-6

8E-6

1E-5

Time (s)

-3

-2

-1

0

1

2

3

Vout

Ton

Toff

Standby

Vin

Group

Delay

Gain

5.32ns

01

2

3

4

Vout peak(V)

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

740kHz

380kHz

640kHz

80kHz