19-1114; Rev 2; 11/04
High-Precision, 10V Reference
Features
Maxim’s MX581 is a three-terminal, temperaturecompensated, bandgap voltage reference which provides a precision 10V output from an unregulated input of
12.5V to 30V. Laser trimming is used to minimize initial
error and temperature drift, to as low as 10mV and
15ppm/°C with the MX581.
No external components are needed to achieve full
accuracy over the operating temperature range. Total
supply current to the device, including the internal output
buffer amplifier is typically 750µA.
♦ ±10mV Tolerance (MX581K)
The MX581 is designed for use with 8- to 14-bit ADCs
and DACs as well as data acquisition systems. The
reference is available in a 3-pin T0-39 metal can and an
8-pin SO surface-mount package.
♦ Three-Terminal Package
♦ Low Tempco—15ppm/°C max (MAX581K)
♦ No External Components or Trims
♦ Short-Circuit Proof
♦ Output Sources and Sinks Current
♦ 10mA Output Current
♦ Low-Supply Current—1.0mA (max)
Ordering Information
Applications
CMOS DAC Reference
PART
A/D Converter Reference
TEMP RANGE
PINPACKAGE
ERROR
Measurement Instrumentation
MX581JH
0°C to +70°C
3 TO-39 Can
±30mV
Threshold Detectors
MX581KH
0°C to +70°C
3 TO-39 Can
±10mV
Precision Analog Systems
MX581JCSA
0°C to +70°C
8 SO
±30mV
MX581KCSA
0°C to +70°C
8 SO
±10mV
MX581JESA
-40°C to +85°C
8 SO
±30mV
MX581KESA
-40°C to +85°C
8 SO
±10mV
MX581SH
-55°C to +125°C 3 TO-39 Can
±20mV
MX581TH
-55°C to +125°C 3 TO-39 Can
±10mV
Pin Configurations
Typical Operating Circuit
BOTTOM VIEW
+VS
+15V
VOUT
+10V
+VS
GND
10kΩ
VOUT
TO-39
MX581
TOP VIEW
10kΩ
GND
-10V
5kΩ
MX400
+10V 1
8
+VS
7
N.C.
3
6
N.C.
GND 4
5
N.C.
N.C. 2
MX581
N.C.
+10V REFERENCE
SO
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
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MX581
General Description