Datasheet

AD8370 Data Sheet
Rev. B | Page 8 of 28
–8
–4
0
4
8
12
16
20
OUTPUT P1dB (dB)
0 20 40 60 80 100 120 140
GAIN CODE
03692-010
UNIT CONVERSION NOTE:
FOR 100Ω LOAD: dBV rms = dBm–10dB
FOR 1kΩ LOAD: dBV rms = dBm
LOW GAIN MODE
LOW GAIN MODE
HIGH GAIN MODE
100Ω LOAD
1kΩ LOAD
HIGH GAIN MODE
SHADING INDICATES ±3σ FROM THE
MEAN. DATA BASED ON 30 PARTS
FROM TWO BATCH LOTS.
Figure 10. Output P1dB vs. Gain Code at 70 MHz
0
–90
–80
–70
–60
–
50
–
40
–30
–20
–10
–50
–140
–130
–120
–110
–100
–90
–80
–70
–60
0 14012010080604020
03692-011
GAIN CODE
LOW GAIN MODE OUTPUT IMD (dBc)
HIGH GAIN MODE OUTPUT IMD (dBc)
HIGH GAIN MODE
LOW GAIN MODE
Figure 11. Two-Tone Output IMD3 vs. Gain Code at 70 MHz,
RL = 1 kΩ, V
OUT
= 2 V p-p Composite Differential
35
30
25
20
15
10
5
0
–5
25
20
15
10
5
0
–5
–10
–15
0 14012010080604020
03692-005
GAIN CODE
OUTPUT IP3 (dBm)
OUTPUT IP3 (dBV rms)
HIGH GAIN
MODE
LOW GAIN
MODE
Figure 12. Output Third-Order Intercept vs. Gain Code at 70 MHz,
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
03692-012
–40°C
+85°C
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.
Figure 13. Gain Error over Temperature vs. Frequency, R
L
= 100 Ω
6
8
10
12
14
16
18
20
OUTPUT P1dB (dBm) –40°C, +85°C
4
6
8
10
12
14
16
18
OUTPUT P1dB (dBm) +25°C
20015050 1000 250 300 350 400
FREQUENCY (MHz)
03692-013
SHADING INDICATES ±3σ FROM
THE MEAN. DATA BASED ON 30
PARTS FROM TWO BATCH LOTS.
UNIT CONVERSION NOTE:
RE 100Ω LOAD: dBV rms = dBm – 10dB
RE 1kΩ LOAD: dBV rms = dBm
+25°C, 100Ω LOAD
+25°C, 1kΩ LOAD
+85°C, 100Ω LOAD
+85°C, 1kΩ LOAD
–40°C, 100Ω LOAD
–40°C, 1kΩ LOAD
Figure 14. Output P1dB vs. Frequency
–50
–84
–82
–80
–78
–76
–74
–72
–70
–68
–66
–64
–62
–60
–58
–56
–54
–52
0 40035030025020015010050
03692-014
FREQUENCY (MHz)
OUTPUT IMD (dBc)
+85°C
–40°C
+25°C
Figure 15. Two-Tone Output IMD3 vs. Frequency at Maximum Gain,
R
L
= 1 kΩ, V
OUT
= 2 V p-p Composite Differential