LT1021_15 Datasheet, PDF (8/16 Pages) Linear Technology – Precision Reference

LT1021
TYPICAL PERFOR A CE CHARACTERISTICS
Shunt Characteristics LT1021-10
1.8
INPUT PIN OPEN
1.6
1.4
1.2
1.0
T_J = – 55°C
0.8
0.6
T_J = 25°C
0.4
T_J = 125°C
0.2
0
0
2
4
6
8 10 12
OUTPUT TO GROUND VOLTAGE (V)
1021 G28
Shunt Mode Current Limit
LT1021-10
60
INPUT PIN OPEN
50
40
30
20
10
0
0 2 4 6 8 10 12 14 16 18
OUTPUT VOLTAGE (V)
1021 G29
Load Transient Response
LT1021-10, C_LOAD = 0
I_SOURCE = 0
10mV
I_SINK = 0.6mA
50mV
I_SINK = 0.8mA
I_SOURCE = 0.2mA
I_SINK = 1mA
I_SOURCE = 2-10mA
∆I_SOURCE = 100µA_P-P
I_SINK = 2-10mA
∆I_SINK = 100µA_P-P
0 12 34 012 34
TIME (µs)
NOTE VERTICAL SCALE CHANGE
BETWEEN SOURCING AND SINKING
1021 G31
Load Transient Response
LT1021-10, C_LOAD = 1000pF
I_SOURCE = 0
5mV
I_SINK = 0.8mA
20mV
I_SINK = 1.2mA
I_SOURCE = 0.5mA
I_SINK = 1.4mA
I_SOURCE = 2-10mA
I_SINK = 2-10mA
∆I_SOURCE = 100µA_P-P ∆I_SINK = 100µA_P-P
0 12 34 012 34
TIME (µs)
NOTE VERTICAL SCALE CHANGE
BETWEEN SOURCING AND SINKING
1021 G32
Thermal Regulation LT1021-10
V_IN = 30V
∆POWER = 200mW
LOAD
0
REGULATION
– 0.5
–1.0
–1.5
THERMAL
REGULATION*
I_LOAD = 10mA
0 20 40 60 80 100 120 140
TIME (ms)
*INDEPENDENT OF TEMPERATURE COEFFICIENT
1021 G30
Output Noise 0.1Hz to 10Hz
LT1021-10
FILTERING = 1 ZERO AT 0.1Hz
2 POLES AT 10Hz
10µV (1ppm)
01
2
3
4
TIME (MINUTES)
56
1021 G33
1021fc
8