AD6432AST datasheet(7/20 Pages) AD

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AD6432

–7–

REV. 0

RF FREQUENCY – MHz

150

450

200

250

300

350

400

10.5

7.5

6.5

9.5

8.5

RIN = 50Ω, IF = 13MHz

RIN = 50Ω, IF = 45MHz

RIN = 50Ω, IF = 26MHz

RIN = 400Ω, IF = 13MHz

Figure 3. Rx Mixer Noise Figure vs. RF Frequency,

TA = +25°C, VPOS = 3 V, VGREF = 1.2 V, VGAIN = 0.2 V

FREQUENCY – MHz

900

800

550

100

150

200

250

300

350

400

450

500

700

600

500

400

300

200

100

2.5

3.0

3.5

4.0

4.5

5.0

VGAIN = 2.4V

VGAIN = 1.2V

VGAIN = 0.2V

VGAIN = 2.4V

VGAIN = 1.2V

VGAIN = 0.2V

Figure 4. Rx Mixer Input Impedance vs. RF Frequency,

VPOS = 3 V, TA = +25°C, VGREF = 1.2 V

RF FREQUENCY – MHz

150

175

200

250

300

350

–2

–4

–6

225

275

325

VGAIN = 0.2V

VGAIN = 2.4V

VGAIN = 1.5V

Figure 5. Rx Mixer Conversion Gain vs. RF Frequency,

TA = +25

°C, V

POS = 3 V, VGREF = 1.2 V, FIF = 26 MHz

IF FREQUENCY – MHz

–5

VGAIN = 1.5V

VGAIN = 0.2V

VGAIN = 2.4V

Figure 6. Mixer Conversion Gain vs. IF Frequency,

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

TEMPERATURE – C

–40 –30 –20

–10

AMP/DEMOD, VPOS = 2.7V TO 3.6V

MIXER, VPOS = 2.7V TO 3.6V

Figure 7. Rx Mixer Conversion Gain and IF Amplifier/

Demodulator Gain vs. Temperature, VGAIN = 0.2 V,

VGREF = 1.2 V, FIF = 26 MHz, FRF = 250 MHz

VGAIN – Volts

–12

–13

–14

–15

–16

VPOS = 2.7V, TA = +85 C

–10

VPOS = 2.7V, TA = +25 C

VPOS = 2.7V, TA = –25 C

VPOS = 3.6V, TA = –40 C

VPOS = 3.6V, TA = +85 C

0.5

1.0

1.5

2.0

2.5

–11

Figure 8. Rx Mixer Input 1 dB Compression Point vs.

VGAIN, VGREF = 1.2 V, FRF = 250 MHz, FIF = 26 MHz

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