LT1790 Просмотр технического описания (PDF) - Linear Technology
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LT1790 Datasheet PDF : 24 Pages
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LT1790
2.5V TYPICAL PERFOR A CE CHARACTERISTICS
Each of the voltage options have similar performance curves. For the 3V, 3.3V and the 4.096V options,
the curves can be estimated based on the 2.5V and 5V curves.
– 2.5V Characteristics
0.30
0.25
0.20
0.15
R1 10k
4
3V
LT1790-2.5
1, 2
RL
5k
6
VOUT
1µF
–VEE
0.10
TA = 25°C
0.05
TA = 125°C
TA = –55°C
0
–4.0 –3.5 –3.0 –2.5 –2.0 –1.5 –1.0 –0.5 0
OUTPUT TO GROUND VOLTAGE (V)
17902.5 G10
Output Noise 0.1Hz to 10Hz
0 1 2 3 4 5 6 7 8 9 10
TIME (SEC)
17901.5 G12
Long-Term Drift
(Data Points Reduced After 500 Hr)
140
TA = 30°C
120 2 TYPICAL PARTS SOLDERED TO PCB
100
80
60
40
20
0
–20
–40
–60
0
200 400 600 800 1000
HOURS
17902.5 G11
Output Voltage Noise Spectrum
10
CL = 1µF
8
6
IO = 0µA
IO = 250µA
4
IO = 1mA
2
0
10
100
1k
10k
FREQUENCY (Hz)
1790 G05
Integrated Noise 10Hz to 1kHz
100
10
1
10
100
1000
FREQUENCY (Hz)
LT1790 G03
1790fa
15
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