10
LT1218/LT1219
TYPICAL PERFORMANCE CHARACTERISTICS
U
W
LT1218 Power Supply Rejection
Ratio vs Frequency
LT1218 Closed Loop Output
Impedance vs Frequency
LT1219 Closed Loop Output
Impedance vs Frequency
FREQUENCY (kHz)
1
POWER
SUPPLY
REJECTION
RATIO
(dB)
100
90
80
70
60
50
40
30
20
10
0
10
100
1000
LT1218/19 TPC17
VS = ±2.5V
POSITIVE SUPPLY
NEGATIVE SUPPLY
FREQUENCY (kHz)
0.1
OUTPUT
IMPEDANCE
(
)
10
1000
1
10
100
1000
LT1218/19 TPC18
1.0
100
AV = 10
AV = 1
VS = ±2.5V
FREQUENCY (kHz)
0.1
OUTPUT
IMPEDANCE
(
)
10
1000
1
10
100
1000
LT1218/19 TPC19
1.0
100
VS = ±2.5V
CL = 0.1F
AV = 10
AV = 1
LT1218 Capacitive Load Handling
LT1219 Overshoot vs Load
Current, VS = ±2.5V
LT1219 Overshoot vs Load
Current, VS = ±15V
LOAD CURRENT (mA)
–10
OVERSHOOT
(%)
5
LT1218/19 TPC21
–5
0
10
70
60
50
40
30
20
10
0
CL = 0.22F
CL = 0.1F
CL = 0.047F
VS = ±2.5V
AV = 1
CAPACITIVE LOAD (pF)
OVERSHOOT
(%)
80
70
60
50
40
30
20
10
0
10
1000
10000
100000
LT1218/19 TPC20
100
AV = 1
AV = 5
AV = 10
VS = ±2.5V
Open-Loop Gain, VS = ±15V
THD + Noise vs Frequency
OUTPUT VOLTAGE (V)
–20
OFFSET
VOLTAGE
CHANGE
(
V)
20
LT1218/19 TPC23
–10
0
10
40
30
20
10
0
–10
–20
–30
–40
–15
–5
5
15
RL = 10k
RL = 2k
VS = ±15V
FREQUENCY (kHz)
0.01
0.001
THD
+
NOISE
(%)
0.01
0.1
1
0.1
1
10
LT1218/19 TPC25
VS = ±1.5V
VIN = 2VP-P
RL = 10k
AV = 1
AV = –1
Input Offset Drift vs Time
TIME AFTER POWER-UP (SEC)
CHANGE
IN
OFFSET
VOLTAGE
(
V)
40
30
20
10
0
–10
–20
–30
–40
LT1218/19 TPC24
0
20
40 60 80 100 120 140
180 200
160
VS = ±15V
VS = ±2.5V
CL = 0.22F
CL = 0.1F
LOAD CURRENT (mA)
–10
OVERSHOOT
(%)
5
LT1218/19 TPC22
–5
0
10
70
60
50
40
30
20
10
0
CL = 0.047F
VS = ±15V
AV = 1