LM385 Datasheet, PDF (3/7 Pages) Microsemi Corporation – 1.2 & 2.5V MICROPOWER VOLTAGE REFERENCE

PRODUCT DATABOOK 1996/1997
1.2 & 2.5V MICROPOWER VOLTAGE REFERENCE
PR O D U C T I O N D ATA S H E E T
LM385/385B
ELECTRICAL CHARACTERISTICS
(Unless otherwise specified, these specifications apply to T_A = 25ºC. Typ number represents T_A = 25ºC value.)
LM385/385B-1.2
Parameter
Symbol
Test Conditions
Reverse Breakdown Voltage
LM385
LM385B
Average Temperature Coefficient
Minimum Operating Current
Reverse Breakdown Voltage Chang
with Current
Reverse Dynamic Impedance
Wide Band Noise (RMS)
Long Term Stability
LM385/385B-2.5
Parameter
V_Z
∆V_Z
∆Temp
I_MIN
e
∆I_R
r_z
e_n
∆V_Z
∆Time
I_MIN ≤ I_R ≤ I_MAX
I_MIN ≤ I_R ≤ I_MAX
I_R = 100µA
∆V_Z
I_MIN ≤ I_R ≤ 1mA
1mA ≤ I_R ≤ 20mA
I_R = 100µA
I_R = 100µA, 10Hz ≤ f ≤ 10kHz
I_R = 100µA, T_A = 25°C ± 0.1°C
Symbol
Test Conditions
Reverse Breakdown Voltage
LM385
LM385B
Average Temperature Coefficient
Minimum Operating Current
Reverse Breakdown Voltage Chang
with Current
Reverse Dynamic Impedance
Wide Band Noise (RMS)
Long Term Stability
V_Z
∆V_Z
∆Temp
I_MIN
e
∆I_R
r_z
e_n
∆V_Z
∆Time
I_MIN ≤ I_R ≤ I_MAX
I_MIN ≤ I_R ≤ I_MAX
I_R = 100µA
∆V_Z
I_MIN ≤ I_R ≤ 1mA
1mA ≤ I_R ≤ 20mA
I_R = 100µA, f = 20Hz
I_R = 100µA, 10Hz ≤ f ≤ 10kHz
I_R = 100µA, T_A = 25°C ± 0.1°C
LM385/385B-1.2
Units
Min. Typ. Max.
1.205 1.235 1.260 V
1.223 1.235 1.247 V
20
ppm/°C
8
15
µA
1.5 mV
20
mV
1
Ω
60
µV
20
ppm/kHr
LM385/385B-2.5
Units
Min. Typ. Max.
2.425 2.500 2.575 V
2.462 2.500 2.538 V
20
ppm/°C
13
20
µA
2
mV
20
mV
1
Ω
120
µV
20
ppm/kHr
Characteristic Curves
LM385/385B-1.2
FIGURE #
1. RESPONSE TIME
2. REVERSE CHARACTERISTICS
3. FORWARD CHARACTERISTICS
4. TEMPERATURE DRIFT
5. REVERSE VOLTAGE CHANGE
6. REVERSE DYNAMIC IMPEDANCE
7. NOISE VOLTAGE
GRAPH / CURVE INDEX
Characteristic Curves
LM385/385B-2.5
FIGURE #
8. RESPONSE TIME
9. REVERSE CHARACTERISTICS
10. FORWARD CHARACTERISTICS
11. TEMPERATURE DRIFT
12. REVERSE DYNAMIC IMPEDANCE
13. NOISE VOLTAGE
Copyright © 1996
Rev. 1.2 7/96
3