AD6458ARS datasheet(6/12 Pages) AD

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AD6458

–6–

REV. 0

RF FREQUENCY – MHz

120

160

200

240

280

320

360

400

440

FIF = 13MHz, ZS = 50Ω

FIF = 26MHz, ZS = 50Ω

FIF = 13MHz, ZS = 400Ω

Figure 5. Mixer Noise Figure vs. RF Frequency

NOISE FIGURE – dB

7.0

8.4

7.2

7.4

7.6

7.8

8.0

8.2

= 7.7dB

= 0.26dB

Figure 6. Mixer Noise Figure Histogram, RS = 1 kΩ,

FRF = 83 MHz, FIF = 13 MHz

RF FREQUENCY – MHz

2.0

1.6

550

100

150

200

250

300

350

400

450

500

1.2

0.8

0.4

5.5

5.0

3.0

4.5

4.0

3.5

CSH, VGAIN = 0.2V

RSH, VGAIN = 2.2V

CSH, VGAIN = 1.0V

RSH, VGAIN = 1.0V

CSH, VGAIN = 2.2V

RSH, VGAIN = 0.2V

Figure 7. Mixer Input Impedance vs. RF Frequency,

VPOS = 3.0 V, TA = +25

°C

RF FREQUENCY – MHz

–15

550

100

150

200

250

300

350

400

450

500

–5

–10

VGAIN = 0.2V

VGAIN = 1.2V

VGAIN = 2.2V

Figure 8. Mixer Conversion Gain vs. RF Frequency,

TA = +25°C, VPOS = 3.0 V, VREF =1.2 V, FIF =13 MHz

IF FREQUENCY – MHz

–2

–10

–4

–6

–8

VGAIN = 0.2V

VGAIN = 1.5V

VGAIN = 2.2V

Figure 9. Mixer Conversion Gain vs. IF Frequency,

TA = +25°C, VPOS = 3 V, VREF = 1.2 V, FRF = 250 MHz

VGAIN – Volts

–15

2.5

0.5

1.0

1.5

2.0

–5

–10

VPOS = 3V TO 3.6V

TA = –25°C TO +85°C

Figure 10. Mixer Conversion Gain vs VGAIN, VREF = 1.2 V,

FIF =13 MHz, FRF = 83 MHz

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