Analog Devices AD8342 Typical Performance Characteristics, Conversion Gain vs. RF Frequency

AD8342

TYPICAL PERFORMANCE CHARACTERISTICS

VS = 5 V, TA = 25°C, RF power = −10 dBm, LO power = 0 dBm, ZO = 50 Ω, RBIAS = 1.82 kΩ, RF termination 100 Ω, IF terminated into 100 Ω via a 2:1 ratio balun, unless otherwise noted.

	6
	5
GAIN (dB)	4	IF = 48MHz									GAIN (dB)
	3
				IF = 140MHz
	IF = 10MHz
	2		IF = 90MHz
	1										05352-004
		100	150	200	250	300	350	400	450	500	550
	50
				RF FREQUENCY (MHz)

6

5

4

3

2

1

10

RF = 238MHz

RF = 460MHz

						05352-005
50	100	150	200	250	300	350
		IF FREQUENCY (MHz)

Figure 3. Conversion Gain vs. RF Frequency Figure 6. Conversion Gain vs. IF Frequency

	5
			IF = 48MHz	IF = 10MHz
	4
(dB)	3
		IF = 140MHz	IF = 90MHz
GAIN
	2
	1
	0				05352-025
		–10	–5	0	5
	–15
			LO LEVEL (dBm)

Figure 4. Gain vs. LO Level, RF Frequency = 238 MHz

5.0

4.5

4.0

3.5

(dB)	3.0
	2.5
GAIN
	2.0

1.5
1.0
						039-05352
0.5
0
	–20	0	20	40	60	80
–40

TEMPERATURE (°C)

	5.0
	4.5
	4.0
	3.5
(dB)	3.0
	2.5
GAIN
	2.0

1.5

1.0
					026-05352
0.5
0
	4.85	4.95	5.05	5.15	5.25
4.75

VPOS (V)

Figure 7. Gain vs. Vpos, fRF = 238 MHz, fLO = 286 MHz

	50
	45	NORMAL
		MEAN = 3.7
	40	STD. DEV. = 0.06
		CONVERSION GAIN
		(238MHz) PERCENTAGE
	35
PERCENTAGE	30
	25
	20
	15
	10
	5										05352-054
	0
		3.45	3.50	3.55	3.60	3.65	3.70	3.75	3.80	3.85	3.90
	3.40

CONVERSION GAIN (238MHz)

Figure 5. Gain vs. Temperature, fRF = 238 MHz, fLO = 286 MHz Figure 8. Conversion Gain Distribution, fRF = 238 MHz, fLO = 286 MHz

Rev. 0 Page 8 of 20