Document
19-0458; Rev 1; 9/96
Low-Cost, Micropower, Precision, 3-Terminal, 1.2V Voltage Reference
_______________General Description
The MAX6120 is the lowest-power 1.2V, precision, three-terminal voltage reference offered in a SOT23 package. Ideal for 3V battery-powered equipment where power conservation is critical, the MAX6120 is a low-power alternative to existing two-terminal shunt references. Unlike two-terminal references that throw away battery current and require an external series resistor, the MAX6120 has a 70µA maximum supply current (typically only 50µA) that is independent of the input voltage. This feature translates to maximum efficiency at all battery voltages. The MAX6120 operates from a supply voltage as low as 2.4V, and initial accuracy is ±1% for the SOT23 package. Output voltage temperature coefficient is typically only 30ppm/°C, and is guaranteed to be less than 100ppm/°C in the SOT23 package. For a guaranteed output voltage temperature coefficient of less than 50ppm/°C, see the MAX6520 data sheet.
____________________________Features
o 3-Pin SOT23 Package o Supply Current Independent of Input Voltage Over Temperature o 50µA Supply Current o 2.4V to 11V Input Voltage Range o 30ppm/°C Typical Tempco (SOT23) o ±1% Initial Accuracy (SOT23)
MAX6120
______________Ordering Information
PART MAX6120ESA MAX6120EUR TEMP. RANGE -40°C to +85°C -40°C to +85°C PIN-PACKAGE 8 SO 3 SOT23-3
________________________Applications
Battery-Powered Systems Portable and Hand-Held Equipment Data-Acquisition Systems Instrumentation and Process Control
TOP VIEW
_________________Pin Configurations
VIN 1
__________Typical Operating Circuit
V+ 2.4V to 11V VIN
MAX6120
VOUT 2
3 GND
SOT23
MAX6120
0.1µF VOUT
VOUT 1.2V
VOUT 1 N.C. 2 N.C. 3 GND 4
8 7
VIN N.C. N.C. N.C.
MAX6120
6 5
GND
SO
0V
________________________________________________________________ Maxim Integrated Products
1
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Low-Cost, Micropower, Precision, 3-Terminal, 1.2V Voltage Reference MAX6120
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (VIN) ..............................................-0.3V to +12V VOUT ............................................................-0.3V to (VIN + 0.3V) Output Short-Circuit Duration ..........Continuous to Either Supply Continuous Power Dissipation (TA = +70°C) SOT23 (derate 4mW/°C above +70°C) ...........................320mW Operating Temperature Range ...........................-40°C to +85°C Storage Temperature Range .............................-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 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 c.