Datasheet

7
LT1207
2nd and 3rd Harmonic Distortion
vs Frequency
Output Impedance vs Frequency
TYPICAL PERFOR A CE CHARACTERISTICS
WU
Output Impedance in Shutdown
vs Frequency
FREQUENCY (Hz)
0.1
OUTPUT IMPEDANCE (Ω)
1
10
100
100k 10M 100M
LT1207 • TPC19
0.01
1M
V
S
= ±15V
I
O
= 0mA
R
SHDN
= 121k
R
SHDN
= 0Ω
FREQUENCY (Hz)
100
OUTPUT IMPEDANCE (Ω)
1k
10k
100k
100k 10M 100M
LT1207 • TPC20
10
1M
A
V
= 1
R
F
= 1k
V
S
= ±15V
FREQUENCY (MHz)
1
–90
DISTORTION (dBc)
–80
–70
–60
–50
–30
310
LT1207 • TPC21
–40
2456789
V
S
= ±15V
V
O
= 2V
P-P
2nd
3rd
R
L
= 10Ω
2nd
3rd
R
L
= 30Ω
Test Circuit for 3rd Order Intercept3rd Order Intercept vs Frequency
FREQUENCY (MHz)
0
10
3rd ORDER INTERCEPT (dBm)
20
30
40
50
60
5
10 15 20
LT1207 • TPC22
25 30
V
S
= ±15V
R
L
= 50Ω
R
F
= 590Ω
R
G
= 64.9Ω
–
+
50Ω

1/2 LT1207
LT1207 • TPC23
65Ω

590Ω

P
O
MEASURE INTERCEPT AT P
O