Datasheet

LT1004-1.2, LT1004-2.5
MICROPOWER INTEGRATED VOLTAGE REFERENCES
SLVS022M − JANUARY 1989 − REVISED MAY 2008
9
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
†
Figure 12
100
10
1
I
Z
− Reference Current − mA
1000
0.1
1001010.10.01
− Reference Impedance − Ω
LT1004x-2.5
REFERENCE IMPEDANCE
vs
REFERENCE CURRENT
f = 25 Hz
T
A
= −55°C to 125°C
z
z
Figure 13
f − Frequency − Hz
1400
1200
1000
800
600
200
0
10 100 1 k 10 k 100 k
400
− Noise Voltage −
V
n
nV/ Hz
I
Z
= 100 µA
T
A
= 25°C
LT1004x-2.5
NOISE VOLTAGE
vs
FREQUENCY
Figure 14
Cutoff Frequency − kHz
1001010.1
120
100
80
60
40
20
0
TL1004x-2.5
FILTERED OUTPUT NOISE VOLTAGE
vs
CUTOFF FREQUENCY
Filtered Output Noise Voltage −µ V
C
R
100 µA
RC Low Pass
I
Z
= 100 µA
T
A
= 25°C
Figure 15
t − Time − µs
Input and Output Voltages − V
100 500
Output
Input
LT1004x-2.5
TRANSIENT RESPONSE
24 kΩ
V
O
V
I
0
4
3
2
1
0
5
0
†
Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices.