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®
Data Sheet
March 15, 2005
X60008A-50
FN8139.0
1ppm/°C, 5.0V, Precision Low-Power
FGA™ Voltage Reference
FEATURES
DESCRIPTION
The X60008A-50 is an extremely stable low power,
high accuracy voltage reference fabricated in Intersil’s
proprietary Floating Gate Analog technology.
• Ultra-Low Temperature Coefficient: 1ppm/°C
The X60008A-50 features guaranteed 1 ppm/°C maxi-
• Absolute Initial Accuracy: ±0.5mV
mum temperature coefficient, absolute initial accuracy of
• 10ppm Thermal Hysteresis
±500µV and extremely low, 10ppm thermal hysteresis.
• Ultra-Low Supply Current : 800nA maximum
• Long Term Stability: 10ppm/1,000Hrs
• 10mA Source & Sink Current
m• 80 mA Short Circuit Current Continuous
• ESD: 5kV (Human Body Model), 500V (Machine
oModel)
.c• Standard SOIC-8 Package
• Temp. Range: -40°C to +85°C
Operating power consumption is typically 500nA and
load regulation is guaranteed up to 10mA (source
and sink). Short circuit current is guaranteed at 80mA
continuous.
The excellent accuracy and stability performance of
the X60008A-50 coupled with its low power consump-
tion is an ideal choice for battery powered high resolu-
tion data acquisition systems.
t4UAPPLICATIONS
• High Resolution A/Ds & D/As
e• High-Accuracy Reference Standard
• Precision Regulators
e• Precision Current Sources
h• Smart sensors
TYPICAL APPLICATION
• Digital Meters
• ATE Equipment
• V-F Converters
• Strain Gage Bridges
• Calibration Systems
• Precision Oscillators
• Threshold Detectors
• Process Control
• Battery Management Systems
• Servo Systems
taSVIN = +6.5V
aVIN VOUT
X60008-50
.DGND
0.1µF
10µF
0.001µF(*)
ww Serial
w .comBus
REF IN
Enable
SCK
SDAT
16 to 24-bit
A/D Converter
et4U(*)Also see Figure 3 in Applications Information
www.DataShe1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-352-6832 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2005. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.

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PACKAGE DIAGRAM
X60008A-50
GND
VIN
DNC
GND
X60008-XX
SOIC
18
27
36
45
DNC
DNC
VOUT
DNC
PIN CONFIGURATIONS
Pin Name
GND
VIN
VOUT
DNC
Description
Ground Connection
Power Supply Input Connection
Voltage Reference Output Connection
Do Not Connect; Internal Connection – Must Be Left Floating
ORDERING INFORMATION
X 60008 A I S8 – 50
Logo
Device Part Number 60008 = Standard
Grade
A = ±0.5 mV, 1ppm/°C
Temperature Range I = -40°C to +85°C
Package
S8 = 8 lead SOIC
VOUT Option
50 = 5.000 V
2 FN8139.0
March 15, 2005

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X60008A-50
ABSOLUTE MAXIMUM RATINGS
Storage Temperature Range............. -65°C to +125°C
Voltage on any Pin Referred to
Ground ............................................... -0.5V to +10V
Lead Temperature
(soldering, 10 seconds)................................ +225°C
RECOMMENDED OPERATING CONDITIONS
Temperature
Industrial
Min.
-40°C
Max.
+85°C
COMMENT
Absolute Maximum Ratings indicate limits beyond which
permanent damage to the device and impaired reliability
may occur. These are stress ratings provided for informa-
tion only and functional operation of the device at these
or any other conditions beyond those indicated in the
operational sections of this specification are not implied.
For guaranteed specifications and test conditions, see
Electrical Characteristics.
The guaranteed specifications apply only for the test con-
ditions listed. Some performance characteristics may
degrade when the device is not operated under the listed
test conditions.
ELECTRICAL CHARACTERISTICS (Operating Conditions: VIN = +6.5V, IOUT = 0mA, TA = -40 to +85°C unless oth-
erwise noted).
Symbol
Parameter
Conditions
Min Typ Max Units
VOUT
VOA
IIN
VIN
TC VOUT
VOUT/VIN
VOUT/VIN
VOUT/IOUT
Output Voltage
VOUT Accuracy
Supply Current
Input Voltage Range
Output Voltage
Temperature Coefficient
Line Regulation
Line Regulation
Load Regulation
VOUT/t
Long Term Stability
VOUT/TA
VOUT/TA
ISC
VN
Thermal Hysteresis
Thermal Hysteresis
Short Circuit Current
VOUT Noise
TA = 25°C
-40°C TA +85°C (note:1)
+5.5V VIN +8.0V
+5.5V VIN +8.0V
Sourcing: 0mA IOUT 10mA
Sinking: -10mA IOUT 0mA
TA = 25°C
TA = 25°C (note: 2)
TA = 125°C (note: 3)
TA = 25°C (note: 4)
0.1Hz f 10Hz
5.000
V
-0.5
+0.5
mV
500 800
nA
5.1 9.0 V
0.5 1.0 ppm/°C
100 µV/V
20 ppm/V
10 50 µV/mA
20 100
10 ppm/
1,000Hrs
10 ppm
50 ppm
50 80
mA
30 µVp-p
Note:
1. Over the specified temperature range. Temperature coefficient is measured by the box method whereby the change in VOUT is divided
by the temperature range; in this case, -40°C to +85°C = 125°C.
2. Measured change in VOUT before and after changing temp by 25°C.
3. Thermal Hysteresis is the change in VOUT created by package stress @ TA = 25°C after temperature cycling. VOUT is read initially at
TA = 25°C; the X60008 is then cycled between Hot (85°C) and Cold (-40°C) before a second VOUT measurement is taken at 25°C. The
deviation between the initial VOUT reading and the second VOUT reading is then expressed in ppm.
4. Guaranteed by Device Characterization.
3 FN8139.0
March 15, 2005

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X60008A-50
TYPICAL PERFORMANCE CHARACTERISTIC CURVES
(VIN = 6.5V, IOUT = 0mA, TA = 25°C unless otherwise specified)
LINE REGULATION
250
5.0003
LINE REGULATION
200 4 Typical units
-40°C
5.00025
150 5.0002
100
+25°C
5.00015
50
+85°C
5.0001
5.00005
0
5
-50 4.99995
-100
5 5.5 6 6.5 7 7.5 8 8.5 9
VIN (V)
4.9999
5 5.5 6 6.5 7 7.5 8 8.5 9
VIN (V)
0.6
-40°C
0.5
LOAD REGULATION
0.4
0.3 85°C
0.2
25°C
0.1
0
-0.1
-0.2
-0.3
-20
-15 -10 -5 0 5 10 15
SINKING
SOURCING
OUTPUT CURRENT (mA)
20
0.1Hz to 10Hz VOUT NOISE
Band Pass Filter with 1 zero at .1Hz and 2 poles at 10 Hz
10 Sec/div
5.0095
5.008
VOUT vs TEMPERATURE
Normalized to 25°C
4 Typical units
5.0065
5.005
5.0035
5.002
5.0005
4.999
4.9975
4.996
4.9945
4.993
4.9915
4.99
-40
-20
0
20 40 60
TEMPERATURE (°C)
80
0
-10
-20
-30
-40
-50
-60
-70
-80
-00
-100
1
PSRR vs CAP LOAD
No Load
1
10
Load (nF) 100
10 100 1k 10k 100k 1M
FREQUENCY (Hz)
4 FN8139.0
March 15, 2005

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X60008A-50
TYPICAL PERFORMANCE CHARACTERISTIC CURVES
(VIN = 6.5V, IOUT = 0mA, TA = 25°C unless otherwise specified)
10mA LOAD TRANSIENT RESPONSE
CL = .001µF
50µA LOAD TRANSIENT RESPONSE
CL = .001µF
IIN = -10mA
IIN = +10mA
IIN = -50µA
IIN = +50µA
1mSEC/DIV
LINE TRANSIENT RESPONSE
CL = 0
500µSEC/DIV
LINE TRANSIENT RESPONSE
CL = .001µF
VIN = -500mV
VIN = +500mV
500µSEC/DIV
MINIMUM VIN to VOUT DIFFERENTIAL
vs. OUTPUT CURRENT
0.50
0.45
0.40
0.35
0.30
+85C
+25C
0.25
0.20
0.15
0.10
0.05
0
0
-40C
24 68
OUTPUT CURRENT (mA)
(Sourcing)
10
VIN = -500mV
VIN = +500mV
500µSEC/DIV
500.0
400.0
300.0
200.0
100.0
0.0
1
Zout vs FREQUENCY
CL=.001µF
CL=.01µF
CL=.1µF
10 100 1k 10k
FREQUENCY (Hz)
100k
5 FN8139.0
March 15, 2005