LT1021DCN8-10 Datasheet, PDF (7/16 Pages) Linear Dimensions Semiconductor – Precision Reference

TYPICAL PERFOR A CE CHARACTERISTICS
Shunt Characteristics LT1021-7
1.2
INPUT PIN OPEN
1.0
0.8
T_J = – 55°C
0.6
T_J = 25°C
0.4
T_J = 125°C
0.2
0
01 2 3 4 5 6 7 8 9
OUTPUT TO GROUND VOLTAGE (V)
1021 G19
Load Transient Response
LT1021-7, C_LOAD = 0
I_SOURCE = 0
5mV
I_SOURCE = 0.5mA
I_SINK = 0.8mA
I_SINK = 1.2mA
50mV
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
LT1021 G22
Output Voltage Temperature
Drift LT1021-10
10.006
10.004
10.002
10.000
9.998
9.996
9.994
– 50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
LT1021 G25
Shunt Mode Current Limit
LT1021-7
60
INPUT PIN OPEN
50
40
30
20
10
0
0 2 4 6 8 10 12 14 16 18
OUTPUT VOLTAGE (V)
LT1021 G20
Load Transient Response
LT1021-7, C_LOAD = 1000pF
I_SOURCE = 0
I_SINK = 0.6mA
5mV
20mV
I_SOURCE = 0.5mA
I_SINK = 0.8mA
I_SINK = 1mA
I_SOURCE = 2-10mA
I_SINK = 2-10mA
∆I_SOURCE = 100µA_P-P ∆I_SINK = 100µA_P-P
0 5 10 15 20 0 5 10 15 20
5µs/DIV
NOTE VERTICAL SCALE CHANGE
BETWEEN SOURCING AND SINKING
LT1021 G23
Load Regulation
LT1021-7, LT1021-10
5
V_IN = 12V
4
3
2
1
0
–1
–2
–3
–4
–5
–10 – 8 – 6 – 4 – 2 0 2 4 6 8 10
SOURCING
SINKING
OUTPUT CURRENT (mA) 1021 G26
LT1021
Thermal Regulation LT1021-7
V_IN = 27V
∆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
LT1021 G21
Output Noise 0.1Hz to 10Hz
LT1021-7
FILTERING = 1 ZERO AT 0.1Hz
2 POLES AT 10Hz
5µV (0.7ppm)
01
2
3
4
TIME (MINUTES)
56
LT1021 G24
Input Supply Current LT1021-10
1.8
I_OUT = 0
1.6
T_J = – 55°C
1.4
T_J = 25°C
1.2
T_J = 125°C
1.0
0.8
0.6
0.4
0.2
0
0 5 10 15 20 25 30 35 40
INPUT VOLTAGE (V)
1021 G27
1021fc
7