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MAX875
Low-Power, Low-Drift, +2.5V/+5V/+10V Precision Voltage Reference
General DescriptionThe 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 envi-
ronmental conditions. Operation for the MAX873 is guar-
anteed 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 100kΩpotentiometer. A
voltage output proportional to temperature provides a
source for temperature compensation circuits, tempera-
ture warning circuits, and other applications.
Applications12-Bit ADCs and DACs
Digital Multimeters
Portable Data-Acquisition Systems
Low-Power Test Equipment
FeaturesMAX873/MAX875/MAX876
+2.5V/+5V/+10V Outputs
±1.5mV/±2.0mV/±3.0mV (max) Initial Accuracy7ppm/°C (max) Temperature Coefficient450µA (max) Quiescent CurrentLow Noise: 3.8µVP-P(typ at 2.5V)Sources 10mA, Sinks 2mA15ppm/mA Load Regulation (max)4ppm/V Line Regulation (max)Wide Supply Voltage Range, +4.5V to +18V
(MAX873)TEMP Output Proportional to Temperature
MAX873/MAX875/MAX876
Low-Power, Low-Drift, +2.5V/+5V/+10V
Precision Voltage References19-0038; Rev 3; 6/07
Ordering Information/Selector Guide+2.5V (MAX873)
+5.0V (MAX875)
+10.0V (MAX876)
*OPTIONAL
IN
GND
0.1µF*OUT
MAX873MAX875MAX876
Typical Operating Circuit
PinConfiguration appears at end of data sheet.
PARTPIN-
PACKAGE
OUTPUT
VOLTAGE
(V)
MAX
TEMPCO
(ppm/°C)
INITIAL
ACCURACY
PKG
CODE
MAX873AESA+8 SO2.5007± 0.06S8-4
MAX873BESA+8 SO2.50020± 0.10S8-4
MAX875AESA+8 SO5.0007± 0.04S8-4
MAX875BESA+8 SO5.00020± 0.06S8-4
MAX876AESA+8 SO10.0007± 0.03S8-4
MAX876BESA+8 SO10.00020± 0.05S8-4
+Denotes a lead-free package.
Note:All devices are specified over the -40°C to +85°C operating temperature range.
MAX873/MAX875/MAX876
Low-Power, Low-Drift, +2.5V/+5V/+10V
Precision Voltage References
ABSOLUTE MAXIMUM RATINGSStresses 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 conditions for extended periods may affect device reliability.
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.............................-65°C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
Junction Temperature (TJ)...............................................+150°C
ELECTRICAL CHARACTERISTICS—MAX873(VIN= +5V, IL= 0mA, CLOAD< 100pF, TA= -40°C to +85°C, unless otherwise noted.)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITSMAX873A (0.06%)2.49852.50002.5015Output VoltageVOUTTA = +25°CMAX873B (0.10%)2.49752.50002.5025V
MAX873A27Output-Voltage Drift
(Note 1)TCVOUTMAX873B520ppm/°C
0.1Hz to 10Hz3.8µVP-POutput-Noise VoltageenTA = +25°C10Hz to 1kHz6.8µVRMS
TA = +25°C14.0Line RegulationVIN = 4.5V to 18VTA = -40°C to +85°C26ppm/V
TA = +25°C315IL = 0 to 10mA
(source)TA = -40°C to +85°C320
TA = +25°C100900Load Regulation
IL = 0 to -1mA (sink)TA = -40°C to +85°C1501900
ppm/mA
TA = +25°C300450Quiescent Supply CurrentIQTA = -40°C to +85°C300600µA
Short-Circuit Output CurrentISCOutput shorted to GND60mA
VOUT Adjust Range±100mV
Long-Term Output Drift50ppm/kh
TEMP PINVoltage OutputVTEMPTA = +25°C570mV
Temperature SensitivityTCVTEMP1.9mV/°C
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITSMAX875A (0.04%)4.9985.0005.002Output VoltageVOUTTA = +25°CMAX875B (0.06%)4.9975.0005.003V
MAX875A27Output Voltage Drift
(Note 1)TCVOUTMAX875B520ppm/°C
0.1Hz to 10Hz9µVP-POutput-Noise VoltageenTA = +25°C10Hz to 1kHz14.5µVRMS
TA = +25°C14.0Line RegulationVIN = 7V to 18Vppm/V
ELECTRICAL CHARACTERISTICS—MAX875(VIN= +15V, IL= 0mA, CLOAD< 100pF, TA= -40°C to +85°C, unless otherwise noted.)
MAX873/MAX875/MAX876
Low-Power, Low-Drift, +2.5V/+5V/+10V
Precision Voltage References
ELECTRICAL CHARACTERISTICS—MAX875 (continued)(VIN= +15V, IL= 0mA, CLOAD< 100pF, TA= -40°C to +85°C, unless otherwise noted.)
ELECTRICAL CHARACTERISTICS—MAX876(VIN= +15V, IL= 0mA, CLOAD< 100pF, TA= -40°C to +85°C, unless otherwise noted.)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITSMAX876A (0.03%)9.99710.00010.003Output VoltageVOUTTA = +25°CMAX876B (0.05%)9.99510.00010.005V
MAX876A27Output Voltage Drift
(Note 1)TCVOUTMAX876B520ppm/°C
0.1Hz to 10Hz18µVP-POutput-Noise VoltageenTA = +25°C10Hz to 1kHz29µVRMS
TA = +25°C14.0Line RegulationVIN = 12V to 18VTA = -40°C to +85°C16ppm/V
TA = +25°C115IL = 0 to 10mA
(source)TA = -40°C to +85°C120
TA = +25°C100900Load Regulation
IL = 0 to -1mA (sink)TA = -40°C to +85°C1501900
ppm/mA
TA = +25°C320550Quiescent Supply CurrentIQTA = -40°C to +85°C340700µA
Short-Circuit Output CurrentISCOutput shorted to GND60mA
VOUT Adjust Range±600mV
Long-Term Output Drift50ppm/kh
TEMP PINVoltage OutputVTEMPTA = +25°C630mV
Temperature SensitivityTCVTEMP2.1mV/°C
Note 1:Temperature coefficient is defined as maximum ∆VOUTdivided by maximum ∆Tof the temperature range.
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITSTA = +25°C315IL = 0 to 10mA
(source)TA = -40°C to +85°C320
TA = +25°C100900Load Regulation
IL = 0 to -1mA (sink)TA = -40°C to +85°C1501900
ppm/mA
TA = +25°C320550Quiescent Supply CurrentIQTA = -40°C to +85°C320700µA
Short-Circuit Output CurrentISCOutput shorted to GND60mA
VOUT Adjust Range±300mV
Long-Term Output Drift50ppm/kh
TEMP PINVoltage OutputVTEMPTA = +25°C630mV
Temperature SensitivityTCVTEMP2.1mV/°C
MAX873/MAX875/MAX876
Low-Power, Low-Drift, +2.5V/+5V/+10V
Precision Voltage References
Typical Operating Characteristics(VIN= +5V for VOUT= +2.5V, VIN= +15V for VOUT= +10V, IOUT= 0, TA= +25°C, unless otherwise noted.)
OUTPUT VOLTAGE vs. TEMPERATURE
(VOUT = 2.5V)
MAX873/75/76 toc01
TEMPERATURE (°C)
OUTPUT VOLTAGE (V)
THREE TYPICAL PARTS
OUTPUT VOLTAGE vs. TEMPERATURE
(VOUT = 10V)
MAX873/75/76 toc02
TEMPERATURE (°C)
OUTPUT VOLTAGE (V)
THREE TYPICAL PARTS
LOAD REGULATION vs.
SOURCE CURRENT (VOUT = 2.5V)
MAX873/75/76 toc03
SOURCE CURRENT (mA)
OUTPUT VOLTAGE CHANGE (mV)
TA = -40°C
TA = +125°C
TA = +25°C
LOAD REGULATION
vs. SOURCE CURRENT (VOUT = 10V)
MAX873/75/76 toc04
SOURCE CURRENT (mA)
OUTPUT VOLTAGE CHANGE (mV)
TA = +25°C
TA = +125°C
TA = -40°C
LOAD REGULATION
vs. SINK CURRENT (VOUT = 2.5V)
MAX873/75/76 toc05
SINK CURRENT (mA)
OUTPUT VOLTAGE CHANGE (mV)
TA = +25°C
TA = +125°C
TA = -40°C
LOAD REGULATION
vs. SINK CURRENT (VOUT = 10V)
MAX873/75/76 toc06
SINK CURRENT (mA)
OUTPUT VOLTAGE CHANGE (mV)
TA = -40°C
TA = +125°C
TA = +25°C
LINE REGULATION vs. TEMPERATURE
(VOUT = 2.5V)
MAX873/75/76 toc07
OUTPUT VOLTAGE CHANGE (
TA = -40°C
TA = +125°C
TA = +25°C
LINE REGULATION vs. TEMPERATURE
(VOUT = 10V)
MAX873/75/76 toc08
OUTPUT VOLTAGE CHANGE (28321620243640
TA = -40°C
TA = +125°C
TA = +25°C
MINIMUM INPUT-OUTPUT DIFFERENTIAL
vs. SOURCE CURRENT (VOUT = 2.5V)
MAX873/75/76 toc09
DROPOUT VOLTAGE (V)
TA = -40°C
TA = +125°C
TA = +25°C
MAX873/MAX875/MAX876
Low-Power, Low-Drift, +2.5V/+5V/+10V
Precision Voltage References
Typical Operating Characteristics (continued)(VIN= +5V for VOUT= +2.5V, VIN= +15V for VOUT= +10V, IOUT= 0, TA= +25°C, unless otherwise noted.)
MINIMUM INPUT-OUTPUT DIFFERENTIAL
vs. SOURCE CURRENT (VOUT = 10V)
MAX873/75/76 toc10
SOURCE CURRENT (mA)
DROPOUT VOLTAGE (V)
TA = -40°C
TA = +125°C
TA = +25°C
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (VOUT = 2.5V)
MAX873/75/76 toc11
FREQUENCY (kHz)
PSRR (dB)
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (VOUT = 10V)
MAX873/75/76 toc12
FREQUENCY (kHz)
PSRR (dB)
OUTPUT IMPEDANCE vs. FREQUENCY
(VOUT = 2.5V)
MAX873/75/76 toc13
FREQUENCY (kHz)
OUTPUT IMPEDANCE (
SUPPLY CURRENT vs. INPUT VOLTAGE
(VOUT = 2.5V)
MAX873/75/76 toc14
INPUT VOLTAGE (V)
SUPPLY CURRENT (
TA = -40°C
TA = +125°C
TA = +25°C
SUPPLY CURRENT vs. INPUT VOLTAGE
(VOUT = 10V)
MAX873/75/76 toc15
INPUT VOLTAGE (V)
SUPPLY CURRENT (
TA = -40°C
TA = +125°C
TA = +25°C
SUPPLY CURRENT vs. TEMPERATURE
(VOUT = 2.5V)
MAX873/75/76 toc16
TEMPERATURE (°C)
SUPPLY CURRENT (
SUPPLY CURRENT vs. TEMPERATURE
(VOUT = 10V)
MAX873/75/76 toc17
TEMPERATURE (°C)
SUPPLY CURRENT (
TEMP VOLTAGE
vs. TEMPERATURE (VOUT = 2.5V)
MAX873/75/76 toc18
TEMPERATURE (°C)
TEMP VOLTAGE (mV)
MAX873/MAX875/MAX876
Low-Power, Low-Drift, +2.5V/+5V/+10V
Precision Voltage References
Typical Operating Characteristics (continued)(VIN= +5V for VOUT= +2.5V, VIN= +15V for VOUT= +10V, IOUT= 0, TA= +25°C, unless otherwise noted.)
TEMP VOLTAGE
vs. TEMPERATURE (VOUT = 10V)
MAX873/75/76 toc19
TEMPERATURE (°C)
TEMP VOLTAGE (mV)
OUTPUT VOLTAGE
vs. TRIM VOLTAGE (VOUT = 2.5V)
MAX873/75/76 toc20
TRIM VOLTAGE (V)
OUTPUT VOLTAGE (V)
LONG-TERM STABILITY vs. TIME
(VOUT = 2.500V)
MAX873/75/76 toc21
TIME (hours)
OUT
(V)
TWO TYPICAL PARTS
LONG-TERM STABILITY vs. TIME
(VOUT = 10.0V)
MAX873/75/76 toc22
TIME (hours)
OUT
(V)
TWO TYPICAL PARTS
OUTPUT-VOLTAGE NOISE DENSITY
vs. FREQUENCY (VOUT = 2.5V)
MAX873/75/76 toc23
FREQUENCY (Hz)
OUTPUT VOLTAGE-NOISE DENSITY (nV/
10,000
OUTPUT-VOLTAGE NOISE DENSITY
vs. FREQUENCY (VOUT = 10V)
MAX873/75/76 toc24
FREQUENCY (Hz)
OUTPUT VOLTAGE-NOISE DENSITY (nV/
0.1Hz TO 10Hz OUTPUT NOISE
(VOUT = 2.5V)
MAX873/75/76 toc25
1µV/div
1s/div
0.1Hz TO 10Hz OUTPUT NOISE
(VOUT = 10V)MAX873/75/76 toc26
4µV/div
1s/div
