Document
MAX873/MAX875/MAX876
19-0038; Rev 3; 6/07
Low-Power, Low-Drift, +2.5V/+5V/+10V Precision Voltage References
General Description
The MAX873/MAX875/MAX876 precision 2.5V, 5V, and 10V references offer excellent accuracy and very low power consumption. Extremely low temperature drift combined with excellent line and load regulation permit stable operation over a wide range of electrical and environmental conditions. Operation for the MAX873 is guaranteed with a +4.5V supply, making the part ideal in systems running from a +5V ±10% supply. Low 10Hz to 1kHz noise—typically 3.8µVRMS, 9µVRMS, and 18µVRMS, respectively, for the MAX873, MAX875, MAX876—make the parts suitable for 12-bit data-acquisition systems.
A TRIM pin facilitates adjustment of the reference voltage over a ±6% range, using only a 100kΩ potentiometer. A voltage output proportional to temperature provides a source for temperature compensation circuits, temperature warning circuits, and other applications.
Features
♦ MAX873/MAX875/MAX876 +2.5V/+5V/+10V Outputs ±1.5mV/±2.0mV/±3.0mV (max) Initial Accuracy
♦ 7ppm/°C (max) Temperature Coefficient
♦ 450µA (max) Quiescent Current
♦ Low Noise: 3.8µVP-P (typ at 2.5V) ♦ Sources 10mA, Sinks 2mA ♦ 15ppm/mA Load Regulation (max) ♦ 4ppm/V Line Regulation (max) ♦ Wide Supply Voltage Range, +4.5V to +18V
(MAX873) ♦ TEMP Output Proportional to Temperature
Applications
12-Bit ADCs and DACs Digital Multimeters Portable Data-Acquisition Systems Low-Power Test Equipment
Typical Operating Circuit
V+
0.1µF*
IN
MAX873 MAX875 MAX876
OUT
+2.5V (MAX873) +5.0V (MAX875) +10.0V (MAX876)
Pin Configuration appears at end of data sheet.
*OPTIONAL 0V
GND
Ordering Information/Selector Guide
PART
PINPACKAGE
OUTPUT VOLTAGE
(V)
MAX TEMPCO (ppm/°C)
MAX873AESA+ MAX873BESA+
8 SO 8 SO
2.500 2.500
7 20
MAX875AESA+
8 SO
5.000
7
MAX875BESA+
8 SO
5.000
20
MAX876AESA+
8 SO
10.000
7
MAX876BESA+
8 SO
10.000
20
+Denotes a lead-free package.
Note: All devices are specified over the -40°C to +85°C operating temperature range.
INITIAL ACCURACY
%
± 0.06 ± 0.10 ± 0.04 ± 0.06 ± 0.03 ± 0.05
PKG CODE
S8-4 S8-4 S8-4 S8-4 S8-4 S8-4
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Low-Power, Low-Drift, +2.5V/+5V/+10V Precision Voltage References
MAX873/MAX875/MAX876
ABSOLUTE MAXIMUM RATINGS
IN to GND ...............................................................-0.3V to +20V OUT, TRIM, TEMP, TEST ..............................- 0.3V to (IN + 0.3V) Output Short-Circuit Duration (to GND)....................................5s Continuous Power Dissipation (TA = +70°C)
SO (derate 5.88mW/°C above +70°C) .........................471mW
Operating Temperature Ranges: MAX87_ _E_A ..................................................-40°C to +85°C
Storage Temperature Range ...........