Datasheet

Data Sheet AD8370
Rev. B | Page 9 of 28
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0 40035030025020015010050
03692-008
FREQUENCY (MHz)
OUTPUT IP3 (dBm)
OUTPUT IP3 (dBV rms)
+85°C
–40°C
+25°C
Figure 16. Output Third-Order Intercept vs. Frequency at Maximum Gain,
R
L
= 1 kΩ, V
OUT
= 2 V p-p Composite Differential
–2.0
–1.5
–1.0
–0.5
0
0.5
GAIN ERROR (dB)
1.0
1.5
2.0
FREQUENCY (MHz)
10 100 1000
03692-015
ERROR AT –40°C AND +85°
C WITH RESPECT TO +25°C.
SHADING INDICATES ±3σ FROM THE MEAN. DATA
BASED ON 30 PARTS FROM ONE BATCH LOT.
–40°C
+85°C
Figure 17. Gain Error over Temperature vs. Frequency, R
L
= 1 kΩ
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
HARMONIC DISTORTION (dBc)
0 20 40 60 80 100 120 140
GAIN CODE
03692-016
HIGH GAIN, R
L
= 1kΩ
LOW GAIN, R
L
= 1kΩ
LOW GAIN, R
L
= 100Ω
HIGH GAIN, R
L
= 100Ω
Figure 18. Second-Order Harmonic Distortion vs. Gain Code at 70 MHz,
V
OUT
= 2 V p-p Differential
1GHz
5MHz
S
22
S
11
0
180
30
330
60
90
270
300
120
240
150
210
03692-017
Figure 19. Input and Output Reflection Coefficients, S11 and S22,
Z
O
= 100 Ω Differential
0
50
100
150
200
250
RESISTANCE (Ω)
–150
–100
–50
0
50
100
REACTANCE (j Ω)
0 100 200 300 400 500 600 700
FREQUENCY (MHz)
03692-018
16 DIFFERENT GAIN
CODES REPRESENTED
R+jX FORMAT
Figure 20. Input Resistance and Reactance vs. Frequency
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
HARMONIC DISTORTION (dBc)
0 20 40 60 80 100 120 140
GAIN CODE
03692-019
LOW GAIN R
L
= 100Ω
LOW GAIN R
L
= 1kΩ
HIGH GAIN R
L
= 100Ω
HIGH GAIN R
L
= 1kΩ
Figure 21. Third-Order Harmonic Distortion vs. Gain Code at 70 MHz,
V
OUT
= 2 V p-p Differential