MAX872 Datasheet, PDF (1/8 Pages) Maxim Integrated Products – 10μA, Low-Dropout, Precision Voltage References

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)
V_IN
V_OUT
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
V_IN 2
TEMP 3
GND 4
MAX872
MAX874
8 COMP
7 I.C.
6 V_OUT
5 TRIM
REFERENCE WITH TRIMMED OUTPUT
DIP/SO
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