Datasheet

17
LT1790
1790fa
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.
–5V Characteristics
Long-Term Drift
Output Noise 0.1Hz to 10Hz Output Voltage Noise Spectrum
5V TYPICAL PERFOR A CE CHARACTERISTICS
UW
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
TIME (SEC)
0
OUTPUT NOISE (20µV/DIV)
8
17905 G12
246 107135 9
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
Intergrated Noise 10Hz to 1kHz
FREQUENCY (Hz)
10
NOISE VOLTAGE (µV/√Hz)
10
8
6
4
2
0
100 1k 10k
1790 G05
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
1790 G04