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Maxim Integrated Semiconductor Electronic Components Datasheet

MAX872 Datasheet

Precision Voltage References

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19-0005; Rev 2; 6/97
10µA, Low-Dropout,
Precision Voltage References
General Description
The MAX872/MAX874 precision 2.5V and 4.096V micro-
power 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
Typical Operating Circuit
3.0V (MAX872)
5.0V (MAX874)
VIN
VOUT
MAX872
MAX874
TRIM
GND
Features
o Output Voltage
2.500V ±0.2% (MAX872)
4.096V ±0.2% (MAX874)
o Wide Operating Voltage Range
2.7V to 20V (MAX872)
4.3V to 20V (MAX874)
o 10µA Max Supply Current
o 40ppm/°C Max Drift Over Extended Temp. Range
o Line Regulation Over Temp.
20µV/V (MAX872)
75µV/V (MAX874)
o Load Regulation Over Temp.
0.6mV/mA Max (MAX872)
1.0mV/mA Max (MAX874)
o ±500µA Sink/Source Current
Ordering Information
PART
TEMP. RANGE
MAX872CPA
0°C to +70°C
MAX872CSA
0°C to +70°C
MAX872C/D
0°C to +70°C
MAX872EPA
-40°C to +85°C
MAX872ESA
-40°C to +85°C
MAX874CPA
0°C to +70°C
MAX874CSA
0°C to +70°C
MAX874C/D
0°C to +70°C
MAX874EPA
-40°C to +85°C
MAX874ESA
-40°C to +85°C
* Dice are specified at +25°C only.
PIN-PACKAGE
8 Plastic DIP
8 SO
Dice*
8 Plastic DIP
8 SO
8 Plastic DIP
8 SO
Dice*
8 Plastic DIP
8 SO
Pin Configuration
TOP VIEW
I.C. 1
VIN 2
TEMP 3
GND 4
MAX872
MAX874
8 COMP
7 I.C.
6 VOUT
5 TRIM
REFERENCE WITH TRIMMED OUTPUT
DIP/SO
________________________________________________________________ Maxim Integrated Products 1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
http://www.Datasheet4U.com/


Maxim Integrated Semiconductor Electronic Components Datasheet

MAX872 Datasheet

Precision Voltage References

No Preview Available !

10µA, Low-Dropout,
Precision Voltage References
ABSOLUTE MAXIMUM RATINGS
Supply Voltage .......................................................................24V
Output Short-Circuit Duration ..........Continuous to Either Supply
CCOMP Input...........................................................-0.3V to VOUT
TRIM Input ...................................................-0.3V to (VIN + 0.3V)
TEMP Output ...............................................-0.3V to (VIN + 0.3V)
Continuous Power Dissipation (TA = +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 (Tj) ......................-65°C to +160°C
Lead Temperature (soldering, 10sec) .............................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress rating s only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specificatio ns is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS—MAX872
(VIN = 2.7V, IL = 0mA, TA = +25°C, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
Output Voltage
Output Voltage Noise
Line Regulation
Load Regulation (Note 1)
VOUT
en
VOUT/VIN
VOUT/IOUT
0.1Hz to 10Hz
VIN = 4.5V to 20V
VIN = 2.7V to 5.5V
Sourcing 0mA to 0.5mA
Sinking 0mA to -0.5mA
Quiescent Supply Current
Change in Supply Current vs. VIN
Short-Circuit Output Current
TEMP Voltage
VOUT Adjustment Range
IQ
IQ/VIN
ISC
VTEMP
VADJ
VIN = 2.7V to 20V
VOUT short to GND
VOUT short to VIN
VOUT VOUT + 0.2V
MIN TYP MAX
2.495 2.500 2.505
60
4 12
80 250
0.2 0.5
4 12
6.5 10
0.35 0.55
6 15
39
690
+75/-20 +100/-25
UNITS
V
µVp-p
µV/V
mV/mA
µA
µA/V
mA
mV
mV
ELECTRICAL CHARACTERISTICS—MAX874
(VIN = 4.3V, IL = 0mA, TA = +25°C, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
Output Voltage
Output Voltage Noise
Line Regulation
Load Regulation (Note 1)
VOUT
en
VOUT/VIN
VOUT/IOUT
0.1Hz to 10Hz
VIN = 4.3V to 20V
Sourcing 0mA to 0.5mA
Sinking 0mA to -0.5mA
Quiescent Supply Current
Change in Supply Current vs. VIN
Short-Circuit Output Current
TEMP Voltage
VOUT Adjustment Range
IQ
IQ/VIN
ISC
VTEMP
VADJ
VIN = 4.3V to 20V
VOUT short to GND
VOUT short to VIN
VOUT VOUT + 0.2V
MIN
4.088
±150
TYP
4.096
90
15
0.15
6
6.5
0.35
6
5
690
±200
MAX
4.104
75
0.9
15
10
0.55
15
25
UNITS
V
µVp-p
µV/V
mV/mA
µA
µA/V
mA
mV
mV
2 _______________________________________________________________________________________
http://www.Datasheet4U.com/


Part Number MAX872
Description Precision Voltage References
Maker Maxim
Total Page 8 Pages
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