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REF43FZN/a6avai+2.5V Low Power Precision Voltage Reference
REF43GJN/a119avai+2.5V Low Power Precision Voltage Reference
REF43GJPMIN/a80avai+2.5V Low Power Precision Voltage Reference
REF43GPADIN/a3avai+2.5V Low Power Precision Voltage Reference
REF43GSN/a860avai+2.5V Low Power Precision Voltage Reference
REF43FJPMN/a600avai+2.5V Low Power Precision Voltage Reference


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REF43FJ-REF43FZ-REF43GJ-REF43GP-REF43GS
+2.5V Low Power Precision Voltage Reference
ANALOG
DEVICES
+2.5V Low Power Precision
Voltage Reference
REF-43
FEATURES
. +2.5VoltOutput _.._.r.r_..r.mrt_rr....r.. i0.05%Max
q Low Temperature Coefficient ............ 10ppm/°C Max
. Excellent Regulation
Load Regulation ..................... 20ppm/mA Max
Line Regulation ........................ 2ppmN Max
I Supply Current ............................ 450pA Max
. Temperature Voltage Output .................. +1.9mV/°C
. Operating Voltage Range ................ +4.5V to +40V
. Extended Industrial Temp Range ......... -40°C to +85°C
. Available in Die Form
ORDERING INFORMATION t
PACKAGE OPERATING
CERDIP PLASTIC LCC TEMPERATURE
mr, To-99 8-PIN 8-PIN zo-CONTACT RANGE
10 REF43N' REF43BD - REfht3BRC/883* MIL
10 REF43FJ REF43FZ - - XlND
25 REF43%1 REF43GZ REF43GP - XIND
25 - - REFASGS - XIND
' Fordevices processed in toml compliance to MIL-STD-883, add I883 after part
number. Consult iactory for 883 data sheet.
t Burn-in is available on commercial and Industrial temperature range parts in
CerDIP, plastic DIP, and TO-can packages.
GENERAL DESCRIPTION
The REF-43 is a Iow-power precision reference providing a
stable +2.5V output independent of variations in supply voltage,
load conditions or ambient temperature. It is suitable as a
reference level for 8, 10 and 12-bit data acquisition systems, or
wherever a stable, known voltage is required.
SIMPLIFIED SCHEMATIC
Tight output tolerances and low thermal drift are assured by
zener-zap trimming of both output voltage and its temperature
coefficient. A unique curvature Correction circuit reduces the
thermal curvature which is characteristic of many previous
bandgap references.
TEST" 1 7 MC.
VIN 2 tr V0."
TEMP 3 5 TRIM
GHO‘UND
(CASE)
REF-438RC/883 TO-99
20-CONTACT LCC (d-Suffix)
(RC-Suffix)
8-PIN CEHDIP
. u . (z-Sumx)
TE 3 LE 8-PIN PLASTIC DIP
IN . . .
TEMP 3 6 VouT (P-Sumx)
GND n H mm 8-PIN SO
(S-Suffix)
"RESERVED FOR FACTORY TESTING.
MAKE NO ELECTRICAL CONNECTION TD THESE PINS.
i a Ve:
t 0 Vour
TEMP cr-NV
" REV. C
Information furnished by Analog Devices is believed to be accurate and
reliable, However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may resu t from its use. No license is granted by implication or
otherwise under ary patent or patent rights of Analog Devices
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A,
Tel: 617/329-4700
Telex: 924491
Fax: 617/326-8703 Twx: 710/394-6577
Cable: ANALOG NORWOODMASS
REF-43
The REF-43 may be operated with supply voltages from +4.5V
to +40V. The output voltage changesrby less than 1780V from
one extreme of supply voltage to the other. With only 450PA
maximum quiescent current, the REF-43 is ideally suited to
applications where power dissipation must be minimized, as in
precision battery-powered equipment. The low supply current
minimizes drift due to self-heating after power-up.
A. temperature output provides a means of determining system
ambient temperature, Applications ofthe REF-43 include A/D
and D/A conversion, 4-20mA transmitter/receiver operation, log
amplifiers, and power-supply regulators.
For a low-cost 2.5V reference available in small-outline pack-
ages consult the REF-03 data sheet.
ABSOLUTE MAXIMUM RATINGS (Note 1)
Supply Voltage ................................................................... 40V
Output Short-Circuit Duration ... . Indefinite
Operating Temperature Range
REF-43B (J, Z) ...........................................
REF-43F (J, Z) ...
REF-43G (J, z, P, S) .........
-550C to +125°C
. -40°C to +85°C
. -AtPC to +85°C
Storage Temperature Range .. .. -65''C to +175°C
Junction Temperature Range ............... .. -650G to +175°C
Lead Temperature (Soldering, 10 sec) .......................... 300°C
PACKAGE TYPE 8” (Note 2) 31c UNITS
T0990) 150 18 “CM!
B-Pin Hermetic DIP (Z) 148 16 °C/W
8-Pin Plastic DIP(P) 103 43 'OW
200me L00 (RC) 90 BB tttt
8-Pin so W) 158 43 KWI
NOTES:
l. Absolute maximum ratings apply to both DICE and packaged parts, unless
otherwise noted.
,, is specified for worst case mounting conditions. i.e.. 8A1: specified for
device in socket for TO, CerDlP, P-DIP. and LCC packages: 6] is specified
for device soldered to printed circuit board for so package.
ELECTRICAL CHARACTERISTICS at VlN = +5\/, IL = 0mA, TA = 25°C unless otherwise noted.
REF-4SB REF-43F REF-43G
PARAMETER SYMBOL CONDITIONS MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS
Output Voltage No Load - 0.04 0.1 - 0.02 0.06 - 0.04 0.1 ox.
Tolerance
Output Voltage V0 No Load 2.4975 2.5000 2.5025 2.4985 2.5000 2.5015 2.4975 2.5000 2.5025 V
Output Voltage 10Hz to 1kHz
- 7 10 - 7 10 - 7 10 V
Noise ennMS (Note 1) " RMS
_ vIN = +4.5V
- 0.8 2 - 0.8 2 - 0.8 2 m/V
Line Regulation to +40V pp
l = 0mA
L d R l ti L - 14 20 - 14 20 - 14 20 m/mA
oa egu a Ion to 10mA pp
Quiescent lsy No Load - 340 450 - 340 450 - 340 450 PA
Supply Current
Load 09mm IL (Note 2) 10 20 - IO 20 - IO 20 - mA
(Sourcing)
Load Current
I N - -1.2 - - -1.2 - - -1.2 - mA
(Sinking) s ( me a) Umm--.
Short-Circuit Is,c Output Shorted - 60 - - 60 _ -- 60 _ mA
Output Current to Ground
Temperature
Voltage VTEMP _ 567 - - 567 - - 567 - mV
Output
VOUT Adjust - :95 - - t95 - - t95 - mV
Long-Term AVO/Time (Note 4) - 1 - - 1 - - 1 - ppm/month
Output Drift - _ -
NOTES:
1. Guaranteed but not tested.
2. Guaranteed by load regulation test.
3. Output remains within 2.5V i2.5mV.
4. Calculated from accelerated life tests at TA: 150°C.
Activation energy = 0.7eV.
-2- REV. C
REF-43
ELECTRICAL CHARACTERISTICS at VIN = +5V, IL = 0mA, -55t S TAS+125°Cforthe REF-43B and -4ty'Cs TA s +85°C forthe
REF-43F/G, unless otherwise noted.
REF-43B REF-43F HEF-4SG
PARAMETER SYMBOL CONDITIONS MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS
Output Voltage No Load - 0.1 0.2 - 0.06 0.12 - thl 0.2 'Yo
Tolerance
Output Voltage Vo No Load 2.495 2.500 2.505 2.497 2.500 2.503 2.495 2.500 2.505 V
0% Z2132: ch -55°CSTAS+125°C - ti 10 - - - - - - m
p. . t3 -4ty'CsTAs+8tPC - - - - 6 IO - 10 25 pp
Coefficient
(Note I)
. . VIN = +4.5V
Line Regulation to +40V 1 3 1 3 1 3 ppm/V
. IL = 0mA
I - - _
Load Regulation to 10mA 25 4O 20 35 25 4O ppm/mA
Quiescent
Supply Current lsy No Load - 400 600 - 400 600 - 400 600 pA
Load cu."'') IL (Note 2) IO 20 - 10 20 - 10 20 - mA
(Sourcing)
Temperature
Hysteresis of AT - i25°C - 100 - - 100 - - 100 - p.V
Output Voltage
Temperature
Voltage TCVTEMP - 1.9 - - 1.9 - - 1.9 - mV/"C
Output Tempco
NOTES:
1. Output voltage temperature coefficient is measured by the box method.
The tempco is defi ned as the slope ofthe diagonal of a box drawn around
the output voltage plotted against temperature. Vour is measured at TMIN,
25°C and TMAXforthe applicabletemperature range. The lowest of these
three readings is subtracted from the highest reading and the resulting
difference is divided by (TMAX - TWN).
2. Guaranteed by Load Regulation test.
BURN-IN CIRCUIT
OUTPUT VOLTAGE TRIM METHOD
REV. C
REF-43
DICE CHARACTERISTICS
DIE SIZE 0.085 M 0.062 inch, 5270 sq. mils
(2.16 X 1.57 mm, 3.39 sq. mm)
2. tlm
3. TEMPERATURE OUT
4A. GROUND'
CB. GROUND'
5. TRIM
6A. VOUT FORGET
68. Vour SENSE
'PADS 4A AND 43 MUST BOTH BE BONDED TO GROUND.
tVour FORCE AND SENSE ARE TYPICALLY BONDED
TOGETHER AT THE LOAD.
WAFER TEST LIMITS at V5: +5V, T, = 25°C, unless otherwise noted.
REF-43N
PARAMETER SYMBOL CONDITIONS LIMIT UNITS
Out ut Volta e Tolerance No Load 2500 t 0005 V MAX
p 9 (Note 1) 0.2 % MAX
Line Regulation vIN = +4.5v to +4ov 2 ppm MAX
Load Regulation l = 0mA to 10mA 20 ppm MAX
Quiescent Supply Current No Load 450 pA MAX
Load Current (Sourcing) (Note 2) 10 mA MIN
NOTES:
1. Final output trims are not performed on standard product dice, These
trims are typically performed after packaging. Precision Monolithics Inc.
assumes no responsibility for improper trimming by the customer.
Contact factory for trim methods.
2. Guaranteed by load regulation test.
Electrical tests are performed at water probe to the limits shown. Due to variations in assembly methods and normal yield loss, yield after packaging is not
guaranteed for standard product dice. Consult factory to negotiate specifications based on dice lot qualification through sample lot assembly and testing.
TYPICAL PERFORMANCE CHARACTER ISTICS
LOAD REGULATION (ppm/mA)
LOAD REGULATION
vs TEMPERATURE
v,N = +5v
um T = 0mA TO 10mA
-55 -35 -15 +5 +25 +45 +65 +85 +105 +125
TEMPERATURE (''C)
LINE REGULATION (ppm/V)
LINE REGULATION
OUTPUT VOLTAGE CHANGE
" TEMPERATURE vs TEMPERATURE
2.5 I I I I
hr, = F4.51f TO +4ov VIN = +w
I0 TLOmA - IOUT=0mA
-55 -35 -15 +5 +25 +115 +65 +85 +105 +125 -55 -35 -15 +5 +25 '45 +35 +85 +105125
TEMPERATURE CC) TEMPERATURE CC)
-4- REV. C
REF-43
TYPICAL PERFORMANCE CHARACTERISTICS
OUTPUT VOLYAGE CHANGE (MV) SUPPLY CURRENT (uA)
. OUTPUT NOISE (“v”)
-55 -35 -15 +5 +25 +45 Hi5 +85 +105 +125
SUPPLY CURRENT
vs TEMPERATURE
v.,}=+s'v
ImT=OmA
TEMPERATURE CC)
OUTPUT VOLTAGE CHANGE
vs SUPPLY VOLTAGE
TA=+25°C
0 5 10 15 20 " 30 " 40
SUPPLY VOLTAGE (VOLTS)
WIDEBAND OUTPUT NOISE
" BANDWIDTH (0.1 Hz TO
FREQUENCY INDICATED)
Vm = +sv
TA = 25°C
10 100 " 10k
FREQUENCY (Hz)
REV. C
TEMPERATURE PIN VOLTAGE (VOLTS)
-55 -35 -15 +5 +25 +45 +65 f85 +105+125
RIPPLE REJECTION (dB)
100 1k
OUTPUT VOLTAGE CHANGE lmV)
TEMPERATURE PIN VOLTAGE
VS TEMPERATURE
vIN = +5v
TEMPERATURE (°C)
RIPPLE REJECTION
vs FREQUENCY
vIN = +5v
AV,N = 500mV
IOUT = 0mA
TA = 25"C
NO INPUT DECOUPLING
10k 100k 1M
FREQUENCY (Hz)
OUTPUT VOLTAGE CHANGE
vs LOAD CURRENT
TA: 25°C
v”. = +w -
a''"'""------.,
-5 0 5 10 15 20
LOAD CURRENT (mA)
supva cunnzm (yA)
OUTPUT IMPEDANCE (n)
OUTPUT VOLTAGE DRIFT (mV)
0 100 200
SUPPLY CURRENT
vs SUPPLY VOLTAGE
YA: t25'C
Ics-tl
0 5 10 15 20 25 30 35 "
SUPPLY VOLTAGE (VOLTS)
OUTPUT IMPEDANCE
vs FREOU ENCY
vm=+sv
mom = 1.4mA
T, = 25°C
DECOUPLING
WITH DAMP ll 10uF OUTPUT
DECOUPLING CAPS
0 100 1k 10k
FREQUENCY (Hz)
100k IN
BURN-IN DRIFT
AT TA= 150°C
MEAN DRIFT I "
300 400 50(
HOURS OF OPERATION AT150°C
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