Maxim MAX874ESA, MAX874EPA, MAX874C-D, MAX874CPA, MAX872C-D Datasheet
...
MAX872/MAX874
10µA, Low-Dropout,
Precision Voltage References
________________________________________________________________
Maxim Integrated Products
1
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General Description
The MAX872/MAX874 precision 2.5V and 4.096V micropower voltage references consume a maximum of only
10µA and operate from supply voltages up to 20V. The
combination of ultra-low quiescent current and low
200mV dropout makes them ideal for battery-powered
equipment. They source and sink up to 500µA with only
200mV input voltage headroom, which makes the 2.5V
MAX872 ideal for use with a 3V supply and the 4.096V
MAX874 ideal for use with a 5V supply.
Initial accuracy of 0.2% at +25°C (±5mV for the MAX872,
±8mV for the MAX874) and low 40ppm/°C max drift make
these references suitable for a wide range of precision
applications.
Applications
Hand-Held Instruments
Battery-Operated Equipment
Power Supplies
Features
♦ Output Voltage
2.500V ±0.2% (MAX872)
4.096V ±0.2% (MAX874)
♦ Wide Operating Voltage Range
2.7V to 20V (MAX872)
4.3V to 20V (MAX874)
♦ 10µA Max Supply Current
♦ 40ppm/°C Max Drift Over Extended Temp. Range
♦ Line Regulation Over Temp.
20µV/V (MAX872)
75µV/V (MAX874)
♦ Load Regulation Over Temp.
0.6mV/mA Max (MAX872)
1.0mV/mA Max (MAX874)
♦ ±500µA Sink/Source Current
V
OUT
TRIMGND
1
2
87COMP
I.C.V
IN
TEMP
I.C.
DIP/SO
TOP VIEW
3
4
6
5
MAX872
MAX874
GND
V
IN
3.0V (MAX872)
5.0V (MAX874)
REFERENCE WITH TRIMMED OUTPUT
V
OUT
TRIM
MAX872
MAX874
Typical Operating Circuit
19-0005; Rev 2; 6/97
PART
MAX872CPA
MAX872CSA
MAX872C/D 0°C to +70°C
0°C to +70°C
0°C to +70°C
TEMP. RANGE PIN-PACKAGE
8 Plastic DIP
8 SO
Dice*
*
Dice are specified at +25°C only.
Pin Configuration
Ordering Information
MAX872EPA
MAX872ESA -40°C to +85°C
-40°C to +85°C 8 Plastic DIP
8 SO
MAX874CPA
MAX874CSA
MAX874C/D 0°C to +70°C
0°C to +70°C
0°C to +70°C 8 Plastic DIP
8 SO
Dice*
MAX874EPA
MAX874ESA -40°C to +85°C
-40°C to +85°C 8 Plastic DIP
8 SO
MAX872/MAX874
10µA, Low-Dropout,
Precision Voltage References
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS—MAX872
(VIN= 2.7V, IL= 0mA, TA= +25°C, unless otherwise noted.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Supply Voltage.......................................................................24V
Output Short-Circuit Duration ..........Continuous to Either Supply
C
COMP
Input...........................................................-0.3V to V
OUT
TRIM Input ...................................................-0.3V to (VIN+ 0.3V)
TEMP Output ...............................................-0.3V to (V
IN
+ 0.3V)
Continuous Power Dissipation (T
A
= +70°C)
Plastic DIP (derate 9.09mW/°C above +70°C) .............727mW
SO (derate 5.88mW/°C above +70°C)..........................471mW
Operating Temperature Ranges
MAX87_C__ .........................................................0°C to +70°C
MAX87_E__ ......................................................-40°C to +85°C
Storage Temperature Range.............................-65°C to +150°C
Junction Temperature Range (T
j
)......................-65°C to +160°C
Lead Temperature (soldering, 10sec).............................+300°C
VIN= 4.5V to 20V
0.1Hz to 10Hz
V
OUT
short to V
IN
V
OUT
short to GND
VIN= 2.7V to 20V
VIN= 2.7V to 5.5V
Sourcing 0mA to 0.5mA
Sinking 0mA to -0.5mA
V
OUT
≥ V
OUT
+ 0.2V
CONDITIONS
mV+75/-20 +100/-25V
ADJ
V
OUT
Adjustment Range
412
µVp-p60e
n
V2.495 2.500 2.505V
OUT
Output Voltage
Output Voltage Noise
mV690V
TEMP
TEMP Voltage
mA
39
I
SC
Short-Circuit Output Current
615
µA/V0.35 0.55IQ/V
IN
Change in Supply Current vs. V
IN
µV/V
80 250
V
OUT/VIN
Line Regulation
0.2 0.5
mV/mA
412
V
OUT/IOUT
Load Regulation (Note 1)
µA6.5 10I
Q
Quiescent Supply Current
UNITSMIN TYP MAXSYMBOLPARAMETER
ELECTRICAL CHARACTERISTICS—MAX874
(VIN= 4.3V, IL= 0mA, TA= +25°C, unless otherwise noted.)
VIN= 4.3V to 20V
0.1Hz to 10Hz
V
OUT
short to V
IN
V
OUT
short to GND
VIN= 4.3V to 20V
Sourcing 0mA to 0.5mA
Sinking 0mA to -0.5mA
V
OUT
≥ V
OUT
+ 0.2V
CONDITIONS
mV±150 ±200V
ADJ
V
OUT
Adjustment Range
15 75
µVp-p90e
n
V4.088 4.096 4.104V
OUT
Output Voltage
Output Voltage Noise
mV690V
TEMP
TEMP Voltage
mA
525
I
SC
Short-Circuit Output Current
615
µA/V0.35 0.55IQ/V
IN
Change in Supply Current vs. V
IN
µV/VV
OUT/VIN
Line Regulation
0.15 0.9
mV/mA
615
V
OUT/IOUT
Load Regulation (Note 1)
µA6.5 10I
Q
Quiescent Supply Current
UNITSMIN TYP MAXSYMBOLPARAMETER
MAX872/MAX874
10µA, Low-Dropout,
Precision Voltage References
_______________________________________________________________________________________ 3
Note 1: If the load current exceeds 300µA, connect a minimum of 1000pF from V
OUT
to GND. Note that if a capacitor larger than
1000pF is used, a compensation capacitor of C
OUT
/100 must be connected from V
OUT
to COMP.
ELECTRICAL CHARACTERISTICS—MAX872C
(VIN= 2.7V, IL= 0mA, TA= 0°C to +70°C, unless otherwise noted.)
VIN= 4.5V to 20V
VIN= 2.7V to 20V
VIN= 2.7V to 5.5V
Sourcing 0mA to 0.4mA
Sinking 0mA to -0.4mA
CONDITIONS
20
ppm/°C20 40TCV
OUT
V2.4905 2.5095V
OUT
Output Voltage
Output Voltage Temperature
Coefficient
mV/°C2.3TCV
TEMP
TEMP Output Temperature
Coefficient
µA/V0.7IQ/V
IN
Change in Supply Current vs. V
IN
µV/V
300
V
OUT/VIN
Line Regulation
0.6
mV/mA
15
V
OUT/IOUT
Load Regulation (Note 1)
µA15I
Q
Quiescent Supply Current
UNITSMIN TYP MAXSYMBOLPARAMETER
VIN≥ V
OUT
+ 0.2V mV+75/-20V
ADJ
V
OUT
Adjustment Range
ELECTRICAL CHARACTERISTICS—MAX874C
(VIN= 4.3V, IL= 0mA, TA= 0°C to +70°C, unless otherwise noted.)
VIN≥ V
OUT
+ 0.2V mV±150
VIN= 4.3V to 20V
V
ADJ
V
OUT
Adjustment Range
VIN= 4.3V to 20V
Sourcing 0mA to 0.4mA
Sinking 0mA to -0.4mA
CONDITIONS
75
ppm/°C20 40TCV
OUT
V4.0805 4.1115V
OUT
Output Voltage
Output Voltage Temperature
Coefficient
mV/°C2.3TCV
TEMP
TEMP Output Temperature
Coefficient
µA/V0.7IQ/V
IN
Change in Supply Current vs. V
IN
µV/VV
OUT/VIN
Line Regulation
1.0
mV/mA
25
V
OUT/IOUT
Load Regulation (Note 1)
µA15I
Q
Quiescent Supply Current
UNITSMIN TYP MAXSYMBOLPARAMETER
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