Datasheet

LT1790
18
1790fc
For more information www.linear.com/LT1790
5V TYPICAL PERFORMANCE CHARACTERISTICS
–5V Characteristics
Long-Term Drift
Output Noise 0.1Hz to 10Hz Output Voltage Noise Spectrum
Integrated Noise 10Hz to 1kHz
OUTPUT TO GROUND VOLTAGE (V)
0
CURRENT IN R
L
(mA)
0.10
0.20
0.30
0.05
0.15
0.25
–8 –6 –4 –2
17905 G10
0–9–10 –7 –5 –3 –1
–V
EE
V
OUT
5.5V
R
L
5k
4
21
6
1µF
LT1790-5
R1 10k
T
A
= –55°C
T
A
= 125°C
T
A
= 25°C
HOURS
0
ppm
60
100
800
17905 G11
20
–20
40
80
0
–40
–60
–80
–100
200
400
600
1000
T
A
= 30°C
2 TYPICAL PARTS SOLDERED TO PCB
TIME (SEC)
0
OUTPUT NOISE (20µV/DIV)
8
17905 G12
2 4 6 1071 3 5 9
FREQUENCY (Hz)
10
NOISE VOLTAGE (µV/√Hz)
10
8
6
4
2
0
100 1k 10k
17905 G13
C
L
= 1µF
I
O
= 0µA
I
O
= 1mA
I
O
= 250µA
FREQUENCY (Hz)
10
INTEGRATED NOISE (µV
RMS
)
1000
100
10
1
100 1000
17905 G14
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.
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