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LT1389BCS8-4.096#PBF

P1-P3P4-P6P7-P9P10-P12
1
LT1389
Nanopower Precision
Shunt Voltage Reference
■
Initial Voltage Accuracy: 0.05%
■
Low Operating Current: 800nA
■
Low Drift: 10ppm/
°
C Max
■
Less Than 1Ω Dynamic Impedance
■
Available in 1.25V, 2.5V, 4.096V and
5V SO-8 Packages
The LT
®
1389 is a nanopower, precision shunt voltage
reference. The bandgap reference uses trimmed preci-
sion thin-film resistors and improved curvature correction
techniques to achieve 0.05% initial voltage accuracy with
guaranteed 10ppm/°C maximum temperature drift. Volt-
age regulation is maintained to an ultralow 800nA operating
current. Advances in design, processing and packaging
achieve low temperature cycling hysteresis.
The LT1389 does not require an output compensation
capacitor, but is stable with capacitive loads. Low dy-
namic impedance makes the LT1389 reference easy to
use from unregulated supplies.
The LT1389 reference can be used as a high performance
upgrade to the LM185/LM385, LT1004, LT1034 and
LT1634 where lowest power and guaranteed tempera-
ture drift are required.
■
Portable Meters
■
Precision Regulators
■
A/D and D/A Converters
■
Calibrators
5V
4.7M
LT1389-1.25
1389 TA01
V
OUT
1.25V
TEMPERATURE (°C)
0
REFERENCE VOLTAGE CHANGE (mV)
1.5
30
1389 TA02
0
–1.0
10 20 40
–1.5
–2.0
2.0
1.0
0.5
–0.5
50 60
70
I
R
= 0.8µA
V
OUT
= 1.25V
Temperature Drift
, LTC and LT are registered trademarks of Linear Technology Corporation.
DESCRIPTIO
U
FEATURES
APPLICATIO S
U
TYPICAL APPLICATIO
U
2
LT1389
OUTPUT
TEMPERATURE COEFFICIENT
TEMPERATURE VOLTAGE ACCURACY (%) (ppm/°C) PART TYPE PART MARKING
0°C to 70°C 1.250 0.05 10 LT1389ACS8-1.25 389A12
1.250 0.05 20 LT1389BCS8-1.25 389B12
2.500 0.05 20 LT1389BCS8-2.5 389B25
4.096 0.075 50 LT1389BCS8-4.096 1389B4
5.000 0.075 50 LT1389BCS8-5 1389B5
ORDER PART
NUMBER
(Note 1)
Operating Current
1.25V............................................................... 20mA
2.5V................................................................. 20mA
4.096V............................................................. 10mA
5V.................................................................... 10mA
Forward Current .................................................. 20mA
Operating Temperature Range ..................... 0°C to 70°C
Storage Temperature Range (Note 2) ... –65°C to 150°C
Lead Temperature (Soldering, 10 sec)..................300°C
S8 PART MARKING
LT1389ACS8-1.25
LT1389BCS8-1.25
LT1389BCS8-2.5
LT1389BCS8-4.096
LT1389BCS8-5
389A12
389B12
389B25
*Connected internally. Do Not Connect external circuitry to these pins.
Consult factory for Industrial and Military grade parts.
T
JMAX
= 125°C, θ
JA
= 190°C/W
1
2
3
4
8
7
6
5
TOP VIEW
S8 PACKAGE
8-LEAD PLASTIC SO
DNC*
DNC*
DNC*
GND
DNC*
DNC*
V
OUT
GND
AVAILABLE OPTIO S
U
The ● denotes specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 3)
PARAMETER CONDITIONS MIN TYP MAX UNITS
Reverse Breakdown Voltage LT1389ACS8/LT1389BCS8 (I
R
= 0.8µA) 1.24937 1.250 1.25062 V
–0.05 0.05 %
LT1389ACS8 (I
R
= 0.8µA) ● 1.24849 1.250 1.25149 V
–0.12 0.12 %
LT1389BCS8 (I
R
= 0.8µA) ● 1.24762 1.250 1.25237 V
–0.19 0.19 %
Reverse Breakdown Change 0.8µA ≤ I
R
≤ 200µA 0.20 0.4 mV
with Current (Note 4)
● 0.20 1.0 mV
200µA ≤ I
R
≤ 2mA 0.3 1.0 mV
● 0.3 2.0 mV
Minimum Operating Current ● 0.6 µA
Temperature Coefficient LT1389ACS8 (I
R
= 0.8µA) ● 4 10 ppm/°C
LT1389BCS8 (I
R
= 0.8µA) ● 4 20 ppm/°C
Reverse Dynamic Impedance (Note 5) 0.8µA ≤ I
R
≤ 2mA 0.25 0.7 Ω
● 0.25 1.5 Ω
Low Frequency Noise (Note 6) I
R
= 0.8µA, 0.1Hz ≤ f ≤ 10Hz 25 µV
P-P
1.25V ELECTRICAL CHARACTERISTICS
1389B4
1389B5
PACKAGE/ORDER I FOR ATIO
UU
W
ABSOLUTE AXI U RATI GS
WWWU
3
LT1389
PARAMETER CONDITIONS MIN TYP MAX UNITS
Reverse Breakdown Voltage LT1389BCS8 (I
R
= 0.9µA) 2.49875 2.500 2.50125 V
–0.05 0.05 %
LT1389BCS8 (I
R
= 0.9µA) ● 2.49525 2.500 2.50475 V
–0.19 0.19 %
Reverse Breakdown Change 0.9µA ≤ I
R
≤ 200µA 0.2 0.5 mV
with Current (Note 4)
● 0.2 1.5 mV
200µA ≤ I
R
≤ 2mA 0.3 1.0 mV
● 0.3 2.5 mV
Minimum Operating Current ● 0.7 µA
Temperature Coefficient I
R
= 0.9µA ● 8 20 ppm/°C
Reverse Dynamic Impedance (Note 5) 0.9µA ≤ I
R
≤ 2mA 0.25 0.75 Ω
● 0.25 2 Ω
Low Frequency Noise (Note 6) I
R
= 0.9µA, 0.1Hz ≤ f ≤ 10Hz 50 µV
P-P
2.5V ELECTRICAL CHARACTERISTICS
The ● denotes specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 3)
PARAMETER CONDITIONS MIN TYP MAX UNITS
Reverse Breakdown Voltage LT1389BCS8 (I
R
= 1.5µA) 4.09293 4.096 4.09907 V
–0.075 0.075 %
LT1389BCS8 (I
R
= 1.5µA) ● 4.0788 4.096 4.1132 V
–0.42 0.42 %
Reverse Breakdown Change 1.5µA ≤ I
R
≤ 200µA 0.2 1.5 mV
with Current (Note 4)
● 0.2 3 mV
200µA ≤ I
R
≤ 2mA 0.3 4 mV
● 0.3 6 mV
Minimum Operating Current ● 1 µA
Temperature Coefficient I
R
= 1.5µA ● 12 50 ppm/°C
Reverse Dynamic Impedance (Note 5) 1.5µA ≤ I
R
≤ 2mA 0.75 2 Ω
● 0.75 3 Ω
Low Frequency Noise (Note 6) I
R
= 1.5µA, 0.1Hz ≤ f ≤ 10Hz 80 µV
P-P
4.096V ELECTRICAL CHARACTERISTICS
The ● denotes specifications which apply over the full
operating temperature range, otherwise specifications are at T
A
= 25°C. (Note 3)
P1-P3P4-P6P7-P9P10-P12

LT1389BCS8-4.096#PBF

Mfr. #:
Buy LT1389BCS8-4.096#PBF
Manufacturer:
Analog Devices Inc.
Description:
Voltage References Nanopwr Prec 4.096V Ref
Lifecycle:
New from this manufacturer.
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