Datasheet

LTC6246/LTC6247/LTC6248
11
624678fa
Typical perForMance characTerisTics
Power Supply Rejection Ratio
vs Frequency
Series Output Resistor
vs Capacitive Load (A
V
= 1)
Series Output Resistor
vs Capacitive Load (A
V
= 2)
Output Impedance vs Frequency
Common Mode Rejection Ratio
vs Frequency
Slew Rate vs Temperature
FREQUENCY (Hz)
OUTPUT IMPEDANCE (Ω)
624678 G31
1000
10
100
1
0.1
0.01
0.001
100k 100M 1G10M1M
V
S
= ±2.5V
A
V
= 10
A
V
= 1
A
V
= 2
FREQUENCY (Hz)
COMMON MODE REJECTION RATIO (dB)
624678 G31
110
90
80
70
60
50
40
30
100
20
10
0
–10
10 100 1k 10k 100k 100M 1G10M1M
T
A
= 25°C
V
S
= ±2.5V
FREQUENCY (Hz)
10
POWER SUPPLY REJECTION RATIO (dB)
50
40
30
20
10
70
80
60
0
–10
100 1k 100k
NEGATIVE SUPPLY
POSITIVE SUPPLY
624678 G33
V
S
= ±2.5V
T
A
= 25°C
100M10M1M10k
TEMPERATURE (°C)
–55
SLEW RATE (V/µs)
140
FALLING, V
S
= ±2.5V
RISING, V
S
= ±2.5V
FALLING, V
S
= ±1.35V
RISING, V
S
= ±1.35V
120
100
80
60
40
–35 45255–15 85
624678 G34
125
A
V
= –1, R
L
= 1k, V
OUT
= 4V
P-P
(±2.5V),
2V
P-P
(±1.35V) SLEW RATE MEASURED
AT MIDDLE 2/3 OF OUTPUT
10565
Distortion vs Frequency
(A
V
= 1, 5V)
Distortion vs Frequency
(A
V
= 2, 5V)
Distortion vs Frequency
(A
V
= 1, 2.7V)
FREQUENCY (MHz)
0.01
DISTORTION (dBc)
–40
–50
–60
–70
–80
–90
–100
–110
–120
0.1 101
624678 G37
V
S
= ±2.5V
V
OUT
= 2V
P-P
A
V
= 1
R
L
= 100Ω, 2ND
R
L
= 1kΩ, 3RD
R
L
= 1kΩ, 2ND
R
L
= 100Ω, 3RD
FREQUENCY (MHz)
0.01
DISTORTION (dBc)
–40
–50
–60
–70
–80
–90
–100
–110
–120
0.1 101
624678 G38
V
S
= ±1.35V
V
OUT
= 1V
P-P
A
V
= 1
R
L
= 100Ω, 2ND
R
L
= 1kΩ, 3RD
R
L
= 1kΩ, 2ND
R
L
= 100Ω, 3RD
FREQUENCY (MHz)
0.01
DISTORTION (dBc)
–40
–50
–60
–70
–80
–90
–100
–110
–120
0.1 101
624678 G39
V
S
= ±2.5V
V
OUT
= 2V
P-P
A
V
= 2
R
L
= 100Ω, 2ND
R
L
= 1kΩ, 3RD
R
L
= 1kΩ, 2ND
R
L
= 100Ω, 3RD
CAPACITIVE LOAD (pF)
10
OVERSHOOT (%)
80
70
60
50
40
30
20
10
0
100 100001000
624678 G35
V
S
= ±2.5V
V
OUT
= 100mV
P-P
A
V
= 1
R
S
= 20Ω
R
S
= 49.9Ω
R
S
= 10Ω
+
–
R
S
C
L
V
OUT
V
IN
A
V
= 1
CAPACITIVE LOAD (pF)
10
OVERSHOOT (%)
80
70
60
50
40
30
20
10
0
100 100001000
624678 G36
V
S
= ±2.5V
V
OUT
= 200mV
P-P
R
F
= R
G
= 500Ω,
A
V
= 2
R
S
= 20Ω
R
S
= 49.9Ω
R
S
500Ω
500Ω
C
L
V
OUT
V
IN
A
V
= 2
R
S
= 10Ω
+
–