LT1490A(RevB) Ver la hoja de datos (PDF) - Linear Technology
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LT1490A
(Rev.:RevB)
(Rev.:RevB)
Linear Technology
LT1490A Datasheet PDF : 16 Pages
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LT1490A/LT1491A
TYPICAL PERFOR A CE CHARACTERISTICS
Gain and Phase Shift
vs Frequency
70
100
VS = ±2.5V
60
80
50
60
PHASE
40
40
30
20
20
0
GAIN
10
– 20
0
– 40
–10
– 60
– 20
– 80
– 30
1
10
100
FREQUENCY (kHz)
–100
1000
1490A G10
Gain Bandwidth Product and
Phase Margin vs Supply Voltage
250
60
240
PHASE MARGIN
230
50
220
210
40
200
GAIN BANDWIDTH
190
30
180
170
20
160 RL = 10k
f = 1kHz
150
10
0 5 10 15 20 25 30 35 40 45
TOTAL SUPPLY VOLTAGE (V)
1490A G13
Gain Bandwidth Product and
Phase Margin vs Load Resistance
350
80
VS = ± 2.5V
AV = –1
300
RF = RG = 100k 70
f = 1kHz
250 PHASE MARGIN
60
200
50
GAIN BANDWIDTH
150
40
100
30
50
1
10
LOAD RESISTANCE (kΩ)
20
100
1490A G16
8
Gain Bandwidth Product
vs Temperature
260
f = 1kHz
240
220
200
VS = ±15V
180
VS = ±1.5V
160
140
120
100
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1490A G11
Slew Rate vs Temperature
0.12
RISING, VS = ±15V
0.10
RISING, VS = ±1.5V
0.08
FALLING, VS = ±15V
FALLING, VS = ±1.5V
0.06
0.04
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1490A G12
CMRR vs Frequency
120
100
VS = ±15V
80
VS = ±1.5V
60
40
20
1
10
FREQUENCY (kHz)
100
1490A G14
PSRR vs Frequency
80
VS = ±2.5V
70
60
POSITIVE SUPPLY
50
40
30
20
NEGATIVE SUPPLY
10
0
– 10
– 20
1
10
FREQUENCY (kHz)
100
1490A G15
Channel Separation vs Frequency
130
VS = ±15V
120
110
100
90
80
70
60
50
40
0.1
1
10
FREQUENCY (kHz)
100
1490A G17
Output Impedance vs Frequency
10k
VS = ± 2.5V
1k
AV = 100
100
AV = 10
10
AV = 1
1
0.1
0.1
1
10
FREQUENCY (kHz)
100
1490A G18
sn1490, 14901afbs
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