LM185-1.2/
LM285-1.2/LM385-1.2
The
q
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. For the LM185-1.2 T
MIN
= –55°C and T
MAX
= 125°C. For LM285-1.2
T
MIN
= –40°C and T
MAX
= 85°C.For LM385-1.2 T
MIN
= 0°C and T
MAX
= 70°C. For MIL-STD components, please refer to LTC883C data
sheet for test listing and parameters.
SYMBOL
V
Z
PARAMETER
Reverse Breakdown Voltage
CONDITIONS
T
A
= 25°C, I
MIN
≤
I
R
≤
20mA
LM185-1.2
LM385-1.2
LM385B-1.2 (Note 3)
I
MIN
≤
I
R
≤
20mA (Notes 2, 3)
T
MIN
≤
T
A
≤
T
MAX
I
MIN
≤
I
R
≤
1mA
T
A
= 25°C
T
MIN
≤
T
A
≤
T
MAX
1mA
≤
I
R
≤
20mA
T
A
= 25°C
T
MIN
≤
T
A
≤
T
MAX
r
Z
Reverse Dynamic Impedance
I
R
= 100µA
T
A
=25°C
T
MIN
≤
T
A
≤
T
MAX
I
R
= 100µA, 10Hz
≤
f
≤
10kHz
I
R
= 100µA, T
A
= 25°C
±
0.1°C
q
ELECTRICAL CHARACTERISTICS
LM185-1.2/LM285-1.2
MIN
TYP
MAX
1.223
1.235
1.247
LM385-1.2/LM385B-1.2
MIN
TYP
MAX
UNITS
V
V
V
ppm/°C
1.205
1.223
20
8
10
1
1.5
10
20
0.2
q
1.235
1.235
20
8
1.260
1.247
∆V
Z
∆Temp
I
MIN
∆V
Z
∆I
R
Average Temperature Coefficient
Minimum Operating Current
Reverse Breakdown Voltage
Change with Current
15
1
1.5
10
25
µA
mV
mV
mV
mV
Ω
Ω
µV
ppm/kHr
q
q
0.6
1.5
0.4
60
20
1.0
1.5
e
n
∆V
Z
∆Time
Wideband Noise (RMS)
Long Term Stability
60
20
Note 1:
Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2:
Selected devices with guaranteed maximum temperature
coefficient are available upon request.
Note 3:
For applications requiring low initial tolerance guaranteed over
temperature consult the LT1004 data sheet.
3
LINER [ LINEAR TECHNOLOGY ]
