Datasheet

MAX6138
0.1%, 25ppm, SC70 Shunt Voltage Reference
with Multiple Reverse Breakdown Voltages
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ELECTRICAL CHARACTERISTICS—MAX6138_21 (2.048V)
(I
R
= 100µA, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
ELECTRICAL CHARACTERISTICS—MAX6138_25 (2.5V)
(I
R
= 100µA, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
MAX6138A (0.1%) 2.0460 2.0480 2.0500
MAX6138B (0.2%) 2.0439 2.0480 2.0521
Reverse Breakdown
Voltage (Note 2)
V
R
T
A
= +25°C
MAX6138C (0.5%) 2.0378 2.0480 2.0582
V
M i ni m um Op er ati ng C ur r ent I
RMIN
45 65 µA
Reverse Voltage
Temperature Coefficient
(Notes 2, 3)
TC 4 25 ppm/°C
I
RMIN
≤ I
R
≤ 1mA 0.3 1.0
Reverse Breakdown
Voltage Change with
Operating Current Change
∆V
R
/∆I
R
1mA ≤ I
R
≤ 15mA 2.5 8.0
mV
Reverse Dynamic
Impedance (Note 3)
Z
R
I
R
= 1mA, f = 120Hz, I
AC
= 0.1I
R
0.3 0.8 Ω
Wideband Noise e
N
10Hz ≤ f ≤ 10kHz 28 µV
RMS
Rever se Br eakd ow n
V ol tag e Long - Ter m S tab i l i ty
∆V
R
t = 1000h 120 ppm
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
MAX6138A (0.1%) 2.4975 2.5000 2.5025
MAX6138B (0.2%) 2.4950 2.5000 2.5050
Reverse Breakdown Voltage
(Note 2)
V
R
T
A
= +25°C
MAX6138C (0.2%) 2.4875 2.5000 2.5125
V
Minimum Operating Current I
RMIN
45 65 µA
Reverse Voltage Temperature
Coefficient (Notes 2, 3)
TC 4 25 ppm/°C
Reverse Breakdown Voltage
Change with Operating Current
Change
∆V
R
/∆I
R
I
RMIN
≤ I
R
≤ 1mA 0.3 1.0 mV
Rever se Br eakd ow n V ol tag e
C hang e w i th Op er ati ng C ur r ent
C hang e
∆V
R
/∆I
R
1mA ≤ I
R
≤ 15mA 2.5 8.0 mV
Reverse Dynamic Impedance
(Note 3)
Z
R
I
R
= 1mA, f = 120Hz, I
AC
= 0.1I
R
0.3 0.8 Ω
Wideband Noise e
N
10Hz ≤ f ≤ 10kHz 35 µV
RMS
Reverse Breakdown Voltage
Long-Term Stability
∆V
R
t = 1000h 120 ppm