9
LT1218/LT1219
TYPICAL PERFORMANCE CHARACTERISTICS
U
W
LT1218 Gain and Phase
Shift vs Frequency
FREQUENCY (kHz)
VOLTAGE
GAIN
(dB)
PHASE
SHIFT
(DEG)
70
60
50
40
30
20
10
0
–10
–20
–30
140
120
100
80
60
40
20
0
–20
–40
–60
1
100
1000
10000
LT1218/19 TPC12
10
PHASE
GAIN
VS = ±2.5V
LT1219 Gain and Phase
Shift vs Frequency
FREQUENCY (kHz)
VOLTAGE
GAIN
(dB)
PHASE
SHIFT
(DEG)
70
60
50
40
30
20
10
0
–10
–20
–30
140
120
100
80
60
40
20
0
–20
–40
–60
1
100
1000
10000
LT1218/19 TPC13
10
PHASE
GAIN
VS = ±2.5V
CL = 0.1F
Noise Current Spectrum
FREQUENCY (Hz)
1
CURRENT
NOISE
(pA/
√
Hz)
2.5
2.0
1.5
1.0
0.5
0
10
100
1000
LT1218/19 TPC11
VS = 5V, 0V
VCM = 4V
VCM = 2.5V
Noise Voltage Spectrum
LT1218 Gain Bandwidth and
Phase Margin vs Supply Voltage
SUPPLY VOLTAGE (V)
0
FREQUENCY
(kHz)
PHASE
MARGIN
(DEG)
15
25
LT1218/19 TPC
510
20
400
350
300
250
200
150
100
50
0
80
70
60
50
40
30
20
10
0
30
PHASE MARGIN
GBW
LT1218 Common Mode Rejection
Ratio vs Frequency
FREQUENCY (kHz)
1
COMMON
MODE
REJECTION
RATIO
(dB)
100
90
80
70
60
50
40
30
20
10
0
10
100
1000
LT1218/19 TPC15
VS = ±2.5V
LT1219 Power Supply Rejection
Ratio 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 TPC16
VS = ±2.5V
POSITIVE SUPPLY
NEGATIVE SUPPLY
FREQUENCY (Hz)
1
NOISE
VOLTAGE
(nV/
√
Hz)
100
90
80
70
60
50
40
30
20
10
0
10
100
1000
LT1218/19 TPC10
VS = 5V, 0V
VCM = 4V
VCM = 2.5V