Datasheet

LT1004-1.2, LT1004-2.5
MICROPOWER INTEGRATED VOLTAGE REFERENCES
SLVS022M − JANUARY 1989 − REVISED MAY 2008
7
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
†
Figure 5
LT1004x-1.2
REFERENCE IMPEDANCE
vs
REFERENCE CURRENT
− Reference Impedance −
I
Z
− Reference Current − mA
f = 25 Hz
T
A
= −55°C to 125°C
100
10
1
0.1
1001010.10.01
Ω
z
z
Figure 6
LT1004x-1.2
NOISE VOLTAGE
vs
FREQUENCY
− Noise Voltage −
f − Frequency − Hz
700
600
500
400
300
200
100
0
10 100 1 k 10 k 100 k
V
n
nV/ Hz
I
Z
= 100 µA
T
A
= 25°C
Figure 7
Filtered Output Noise Voltage −
Cutoff Frequency − kHz
1001010.1
70
60
50
40
30
20
10
0
TL1004x-1.2
FILTERED OUTPUT NOISE VOLTAGE
vs
CUTOFF FREQUENCY
µV
C
R
100 µA
RC Low Pass
I
Z
= 100 µA
T
A
= 25°C
Figure 8
Output
1.5
1
0.5
0
5
0
6005001000
Input and Output Voltages − V
t − Time − µs
Input
LT1004x-1.2
TRANSIENT RESPONSE
36 kΩ
V
O
V
I
2
†
Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices.