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Data Sheet
AD8370
Rev. B | Page 7 of 28
TYPICAL PERFORMANCE CHARACTERISTICS
VS = 5 V, ZS = 200 , ZL = 100 , T = 25°C, unless otherwise noted.
0
10
20
30
40
50
60
70
–30
–20
–10
0
10
20
30
40
VOLTAGE
GAIN
(dB)
VOLTAGE
GAIN
(V/V)
0
10
20
30
40
60
100
50
70
80
90
110 120 130
GAIN CODE
03692-004
CODE = LAST 7 BITS OF GAIN CODE
(NO MSB)
HIGH GAIN MODE
LOW GAIN MODE
GAIN
CODE
0.409
GAIN
CODE
0.059
Figure 4. Gain vs. Gain Code at 70 MHz
5
10
15
20
25
30
35
40
–5
0
5
10
15
20
25
30
0
20
40
60
80
100
120
140
03692-068
HIGH GAIN MODE
LOW GAIN MODE
SHADING INDICATES ±3
σ FROM THE
MEAN. DATA BASED ON 30 PARTS
FROM TWO BATCH LOTS.
GAIN CODE
OUTPUT
IP3
(dBm)
OUTPUT
IP3
(dBV
rms)
Figure 5. Output Third-Order Intercept vs. Gain Code at 70 MHz
5
10
15
20
25
30
NOISE
FIGURE
(dB)
35
40
45
0
20
40
60
80
100
120
140
GAIN CODE
03692-006
HIGH GAIN MODE
380MHz
70MHz
LOW GAIN MODE
Figure 6. Noise Figure vs. Gain Code at 70 MHz
–10
–5
0
5
10
15
20
25
30
35
40
VOLTAGE
GAIN
(dB)
FREQUENCY (MHz)
10
100
1000
03692-007
HG77
HG127
LG90
LG9
LG18
LG127
HG102
HG18
LG36
HG51
HG25
HG9
HG3
HIGH GAIN CODES SHOWN WITH DASHED LINES
LOW GAIN CODES SHOWN WITH SOLID LINES
Figure 7. Frequency Response vs. Gain Code
OUTPUT
IP3
(dBm)
+25
°C
FREQUENCY (MHz)
OUTPUT
IP3
(dBm)
–40
°C,
+85
°C
10
15
20
25
30
35
40
20
25
30
35
40
45
50
200
150
50
100
0
250
300
350
400
03692-069
+25
°C
UNIT CONVERSION NOTE FOR
100
LOAD: dBVrms = dBm–10dB
+85
°C
–40
°C
SHADING INDICATES ±3
σ FROM THE
MEAN. DATA BASED ON 30 PARTS
FROM TWO BATCH LOTS.
Figure 8. Output Third-Order Intercept vs. Frequency at Maximum Gain
0
5
10
15
20
25
NOISE
FIGURE
(dB)
200
300
0
100
400
500
600
FREQUENCY (MHz)
03692-009
HG18
HG127
LG127
Figure 9. Noise Figure vs. Frequency at Various Gains