DATASHEET
ISL71090SEH12
1.25V Radiation Hardened Ultra Low Noise, Precision Voltage Reference
The
ISL71090SEH12
is an ultra low noise, high DC accuracy
precision voltage reference with a wide input voltage range
from 4V to 30V. The ISL71090SEH12 uses the Intersil
advanced bipolar technology to achieve 1µV
P-P
noise at 0.1Hz
with an accuracy over temperature of 0.15% and an accuracy
over radiation of 0.15%.
The ISL71090SEH12 offers a 1.25V output voltage with
10ppm/°C temperature coefficient and also provides
excellent line and load regulation. The device is offered in an
8 Ld flatpack package.
The ISL71090SEH12 is ideal for high-end instrumentation,
data acquisition and applications requiring high DC precision
where low noise performance is critical.
FN8452
Rev 4.00
March 18, 2016
Features
• Reference output voltage . . . . . . . . . . . . . . . . . 1.25V ±0.05%
• Accuracy over temperature . . . . . . . . . . . . . . . . . . . . ±0.15%
• Accuracy over radiation . . . . . . . . . . . . . . . . . . . . . . . . ±0.15%
• Output voltage noise . . . . . . . . . . 1µV
P-P
typ (0.1Hz to 10Hz)
• Supply current . . . . . . . . . . . . . . . . . . . . . . . . . . . . 930µA (typ)
• Tempco (box method) . . . . . . . . . . . . . . . . . . . 10ppm/°C max
• Output current capability . . . . . . . . . . . . . . . . . . . . . . . . 20mA
• Line regulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8ppm/V
• Load regulation . . . . . . . . . . . . . . . . . . . . . . . . . . . 35ppm/mA
• Operating temperature range. . . . . . . . . . . .-55°C to +125°C
• Radiation environment
- High dose rate (50 to 300rad(Si)/s) . . . . . . . . . 100krad(Si)
- Low dose rate (0.01rad(Si)/s) . . . . . . . . . . . . . 100krad(Si)*
- SET/SEL/SEB . . . . . . . . . . . . . . . . . . . . . . 86MeV•cm
2
/mg
*Product capability established by initial characterization. The
“EH” version is acceptance tested on a wafer-by-wafer basis to
50krad(Si) at low dose rate
• Electrically screened to SMD
5962-13211
Applications
• RH voltage regulators precision outputs
• Precision voltage sources for data acquisition system for
space applications
• Strain and pressure gauge for space applications
Related Literature
•
AN1847,
“ISL71090SEH12, ISL71090SEH25,
ISL71090SEH50, ISL71090SEH75 User’s Guide”
•
AN1848,
“Single Event Effects (SEE) Testing of the
ISL71090SEH Precision Voltage Reference”
•
AN1849,
“Total Dose Testing of the ISL71090SEH Precision”
ISL71090SEH12
1
2
0.1µF
1nF
3
4
DNC
VIN
COMP
GND
DNC
DNC
VOUT
TRIM
8
1.2530
7
VREF
6
5
0.1µF
V
OUT
(V)
C
REFIN
VDD
VEE
VDD
VEE
BIPOFF
NOTE: Select C to minimize
settling time.
DACOUT
D12
D0
GND
1.1k
1.2500
-60
-40
-20
0
20
40
60
80
100
120
1.2520
1.2515
1.2510
UNIT4
1.2505
1.2525
UNIT3
UNIT5
UNIT1
UNIT2
VIN
HS-565BRH
TEMPERATURE (°C)
FIGURE 1. ISL71090SEH12 TYPICAL APPLICATION DIAGRAM
FIGURE 2. V
OUT
vs TEMPERATURE
FN8452 Rev 4.00
March 18, 2016
Page 1 of 13
ISL71090SEH12
Ordering Information
ORDERING
NUMBER
(Notes
1, 2)
5962R1321101VXC
ISL71090SEHF12/PROTO
5962R1321101V9A
ISL71090SEHX12SAMPLE
ISL71090SEH12EV1Z
NOTES:
1. These Intersil Pb-free Hermetic packaged products employ 100% Au plate - e4 termination finish, which is RoHS compliant and compatible with both
SnPb and Pb-free soldering operations.
2. Specifications for Rad Hard QML devices are controlled by the Defense Logistics Agency Land and Maritime (DLA). The SMD numbers listed in the
“Ordering Information” table must be used when ordering.
PART
NUMBER
ISL71090SEHVF12
ISL71090SEHF12/PROTO
ISL71090SEHVX12
ISL71090SEHX12SAMPLE
Evaluation Board
V
OUT
OPTION
(V)
1.25
1.25
1.25
1.25
TEMP RANGE
(°C)
-55 to +125
-55 to +125
-55 to +125
-55 to +125
PACKAGE
(RoHS Compliant)
8 Ld Flatpack
8 Ld Flatpack
Die
Die
PKG. DWG. #
K8.A
K8.A
TABLE 1. KEY DIFFERENCES BETWEEN FAMILY OF PARTS
PART
NUMBER
ISL71090SEH12
ISL71090SEH25
ISL71090SEH50
ISL71090SEH75
V
OUT
(V)
1.25
2.5
5.0
7.5
TEMPCO
(ppm/°C)
10
10
10
10
OUTPUT VOLTAGE NOISE
(µV
P-P
)
1
2
1.1
1
LOAD REGULATION
(ppm/mA)
35
2.5
10
10
FN8452 Rev 4.00
March 18, 2016
Page 2 of 13
ISL71090SEH12
Pin Configuration
ISL71090SEH12
(8 LD FLATPACK)
TOP VIEW
DNC
VIN
COMP
GND
1
2
3
4
8
7
6
5
DNC
DNC
VOUT
TRIM
NOTE: The ESD triangular mark is indicative of pin #1. It is a part of the device marking and is
placed on the lid in the quadrant where pin #1 is located.
Pin Descriptions
PIN NUMBER
1, 7, 8
2
3
4
5
6
PIN NAME
DNC
VIN
COMP
GND
TRIM
VOUT
ESD CIRCUIT
3
1
2
1
2
2
DESCRIPTION
Do not connect. Internally terminated.
Input voltage connection.
Compensation and noise reduction capacitor.
Ground connection. Also connected to the lid.
Voltage reference trim input.
Voltage reference output.
VDD
VDD
VDD
CAPACITIVELY
TRIGGERED CLAMP
PIN
GND
GND
ESD CIRCUIT 1
ESD CIRCUIT 2
DNC
ESD CIRCUIT 3
FN8452 Rev 4.00
March 18, 2016
Page 3 of 13
ISL71090SEH12
Functional Block Diagram
VIN
BIAS
REGULATOR
DNC
DNC
DNC
1.2V
+
Gm
-
3.7V
+
-
GND
VOUT
COMP
TRIM
1.2V
FIGURE 3. FUNCTIONAL BLOCK DIAGRAM
Typical Trim Application Diagram
ISL71090SEH12
1
DNC
VIN
0.1µF
1nF
2
3
4
VIN
COMP
GND
DNC
DNC
VOUT
TRIM
7
VREF
6
5
100kΩ
1MΩ
0.1µF
8
FIGURE 4. TYPICAL TRIM APPLICATION DIAGRAM
FN8452 Rev 4.00
March 18, 2016
Page 4 of 13
ISL71090SEH12
Absolute Maximum Ratings
Maximum Voltage
V
IN
to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to +40V
V
IN
to GND at an LET = 86MeV•cm
2
/mg . . . . . . . . . . . . . . -0.5V to +36V
V
OUT
to GND (10s). . . . . . . . . . . . . . . . . . . . . . . . . . . . .-0.5V to V
OUT
+ 0.5V
Voltage on any Pin to Ground . . . . . . . . . . . . . . . . . -0.5V to +V
OUT
+ 0.5V
Voltage on DNC Pins . . . . . . . . . . . . No connections permitted to these pins
ESD Ratings
Human Body Model (Tested per MIL-PRF-883 3015.7). . . . . . . . . . . 2kV
Machine Model (Tested per JESD22-A115-A) . . . . . . . . . . . . . . . . . . 200V
Charged Device Model (Tested per JESD22-C101D) . . . . . . . . . . . 750V
Thermal Information
Thermal Resistance (Typical)
JA
(°C/W)
JC
(°C/W)
8 Ld Flatpack Package (Notes
3, 4).
. . . . .
140
15
Storage Temperature Range. . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Maximum Junction Temperature (T
JMAX
). . . . . . . . . . . . . . . . . . . . . .+150°C
Recommended Operating Conditions
V
IN
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.0V to +30V
Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55°C to +125°C
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product
reliability and result in failures not covered by warranty.
NOTES:
3.
JA
is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief
TB379
for details.
4. For
JC
, the "case temp" location is the center of the ceramic on the package underside.
5. Product capability established by initial characterization. The "EH" version is acceptance tested on a wafer-by-wafer basis to 50krad(Si) at low dose rate.
6. The output capacitance used for SEE testing is C
IN
= 0.1µF and C
OUT
= 1µF.
V
IN
= 5V, I
OUT
= 0mA, C
L
= 0.1µF and C
C
= 1nF unless otherwise specified. Boldface limits
apply after radiation at +25°C and across the operating temperature range, -55°C to +125°C without radiation, unless otherwise specified.
PARAMETER
V
OUT
V
OA
DESCRIPTION
Output Voltage
V
OUT
Accuracy at T
A
= +25°C
V
OUT
= 1.252V, (Note
9)
-0.05
-0.15
-0.15
TEST CONDITIONS
MIN
(Note
7)
TYP
1.252
+0.05
+0.15
+0.15
10
4
0.930
V
IN
= 4V to 30V
Sourcing: 0mA
≤
I
OUT
≤
20mA
I
OUT
= 10mA
T
A
= +25°C, V
OUT
tied to GND
T
A
= +25°C, V
OUT
tied to V
IN
90% of final value, C
L
= 1.0µF,
C
C
= open
f = 120Hz
0.1Hz
≤
f
≤10Hz
10Hz
≤
f
≤1kHz
f = 1kHz, V
IN
= 6V
T
A
= +125°C, 1000hrs
8
35
1.70
53
-23
250
90
1.0
1.2
21
15
30
1.280
18
55
2.25
MAX
(Note
7)
UNIT
V
%
%
%
ppm/°C
V
mA
ppm/V
ppm/mA
V
mA
mA
µs
dB
µV
P-P
µV
RMS
nV/Hz
ppm
Electrical Specifications for Flatpack
V
OUT
Accuracy at T
A
= -55°C to +125°C V
OUT
= 1.252V, (Note
9)
V
OUT
Accuracy at T
A
= +25°C, Post
Radiation
TC V
OUT
V
IN
I
IN
V
OUT
/V
IN
V
OUT
/I
OUT
V
D
I
SC+
I
SC-
t
R
PSRR
e
N
V
N
Output Voltage Temperature
Coefficient (Note
8)
Input Voltage Range
Supply Current
Line Regulation
Load Regulation
Dropout Voltage (Note
10)
Short-Circuit Current
Short-Circuit Current
Turn-On Settling Time
Ripple Rejection
Output Voltage Noise
Broadband Voltage Noise
Noise Density
V
OUT
/t
Long Term Drift
V
OUT
= 1.252V, (Note
9)
FN8452 Rev 4.00
March 18, 2016
Page 5 of 13
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