MAXIM MAX873, MAX875, MAX876 Technical data

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 3.8µV

RMS

, 9µV

RMS

, and 18µV

RMS

,
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.

Applications

12-Bit ADCs and DACs

Digital Multimeters

Portable Data-Acquisition Systems

Low-Power Test Equipment

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: 3.8µV

P-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

MAX873/MAX875/MAX876

Low-Power, Low-Drift, +2.5V/+5V/+10V

Precision Voltage References

________________________________________________________________

Maxim Integrated Products

1

19-0038; Rev 3; 6/07

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.

Ordering Information/Selector Guide

+2.5V (MAX873)
+5.0V (MAX875)

+10.0V (MAX876)

*OPTIONAL

IN

V+

0V

GND

0.1µF*
OUT

MAX873
MAX875
MAX876

Typical Operating Circuit

Pin Configuration appears at end of data sheet.

+

Denotes a lead-free package.

Note: All devices are specified over the -40°C to +85°C operating temperature range.

OUTPUT

VOLTAGE

(V)

PIN­PACKAGE

PART

MAX873AESA+ 8 SO 2.500 7 ± 0.06 S8-4

MAX873BESA+ 8 SO 2.500 20 ± 0.10 S8-4

MAX875AESA+ 8 SO 5.000 7 ± 0.04 S8-4

MAX875BESA+ 8 SO 5.000 20 ± 0.06 S8-4

MAX876AESA+ 8 SO 10.000 7 ± 0.03 S8-4

MAX876BESA+ 8 SO 10.000 20 ± 0.05 S8-4

MAX
TEMPCO
(ppm/°C)

INITIAL

ACCURACY

%

PKG

CODE

MAX873/MAX875/MAX876

Low-Power, Low-Drift, +2.5V/+5V/+10V
Precision Voltage References

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

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 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 (T

A

= +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 (T

J

) ...............................................+150°C

ELECTRICAL CHARACTERISTICS—MAX873

(VIN= +5V, IL= 0mA, C

LOAD

< 100pF, TA= -40°C to +85°C, unless otherwise noted.)

ELECTRICAL CHARACTERISTICS—MAX875

(VIN= +15V, IL= 0mA, C

LOAD

< 100pF, TA= -40°C to +85°C, unless otherwise noted.)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Output Voltage V

Output-Voltage Drift
(Note 1)

Output-Noise Voltage e

Line Regulation VIN = 4.5V to 18V

Load Regulation

Quiescent Supply Current I

Short-Circuit Output Current I

V

Adjust Range ±100 mV

OUT

Long-Term Output Drift 50 ppm/kh

TEMP PIN

Voltage Output V

Temperature Sensitivity TCV

OUT

TCV

TEMPTA

TA = +25°C

MAX873A 2 7

OUT

MAX873B 5 20

TA = +25°C

n

IL = 0 to 10mA
(source)

I

= 0 to -1mA (sink)

L

TA = +25°C 300 450

Q

TA = -40°C to +85°C 300 600

Output shorted to GND 60 mA

SC

= +25°C 570 mV

TEMP

MAX873A (0.06%) 2.4985 2.5000 2.5015

MAX873B (0.10%) 2.4975 2.5000 2.5025

0.1Hz to 10Hz 3.8 µV

10Hz to 1kHz 6.8 µV

TA = +25°C 1 4.0

T

= -40°C to +85°C 2 6

A

TA = +25°C 3 15

= -40°C to +85°C 3 20

T

A

TA = +25°C 100 900

T

= -40°C to +85°C 150 1900

A

1.9 mV/°C

V

ppm/°C

P-P

RMS

ppm/V

ppm/mA

µA

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Output Voltage V

Output Voltage Drift
(Note 1)

Output-Noise Voltage e

Line Regulation VIN = 7V to 18V

MAX875A (0.04%) 4.998 5.000 5.002

MAX875B (0.06%) 4.997 5.000 5.003

0.1Hz to 10Hz 9 µV

10Hz to 1kHz 14.5 µV

TA = +25°C 1 4.0

= -40°C to +85°C 2 6

T

A

TCV

OUT

OUT

n

TA = +25°C

MAX875A 2 7

MAX875B 5 20

TA = +25°C

V

ppm/°C

P-P

RMS

ppm/V

MAX873/MAX875/MAX876

Low-Power, Low-Drift, +2.5V/+5V/+10V

Precision Voltage References

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS—MAX875 (continued)

(VIN= +15V, IL= 0mA, C

LOAD

< 100pF, TA= -40°C to +85°C, unless otherwise noted.)

ELECTRICAL CHARACTERISTICS—MAX876

(VIN= +15V, IL= 0mA, C

LOAD

< 100pF, TA= -40°C to +85°C, unless otherwise noted.)

Note 1: Temperature coefficient is defined as maximum ∆V

OUT

divided by maximum ∆T of the temperature range.

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Load Regulation

Quiescent Supply Current I

Short-Circuit Output Current I

V

Adjust Range ±300 mV

OUT

Long-Term Output Drift 50 ppm/kh

TEMP PIN

Voltage Output V

Temperature Sensitivity TCV

IL = 0 to 10mA
(source)

I

TA = +25°C 320 550

Q

TA = -40°C to +85°C 320 700

Output shorted to GND 60 mA

SC

TEMPTA

TEMP

= 0 to -1mA (sink)

L

= +25°C 630 mV

TA = +25°C 3 15

T

= -40°C to +85°C 3 20

A

TA = +25°C 100 900

= -40°C to +85°C 150 1900

T

A

2.1 mV/°C

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Output Voltage V

Output Voltage Drift
(Note 1)

Output-Noise Voltage e

Line Regulation VIN = 12V to 18V

Load Regulation

Quiescent Supply Current I

Short-Circuit Output Current I

V

Adjust Range ±600 mV

OUT

Long-Term Output Drift 50 ppm/kh

TEMP PIN

Voltage Output V

Temperature Sensitivity TCV

OUT

TCV

OUT

n

Q

SC

TEMPTA

TEMP

TA = +25°C

MAX876A 2 7

MAX876B 5 20

TA = +25°C

IL = 0 to 10mA
(source)

I

= 0 to -1mA (sink)

L

TA = +25°C 320 550

TA = -40°C to +85°C 340 700

Output shorted to GND 60 mA

= +25°C 630 mV

MAX876A (0.03%) 9.997 10.000 10.003

MAX876B (0.05%) 9.995 10.000 10.005

0.1Hz to 10Hz 18 µV

10Hz to 1kHz 29 µV

TA = +25°C 1 4.0

= -40°C to +85°C 1 6

T

A

TA = +25°C 1 15

= -40°C to +85°C 1 20

T

A

TA = +25°C 100 900

= -40°C to +85°C 150 1900

T

A

2.1 mV/°C

ppm/mA

µA

V

ppm/°C

P-P

RMS

ppm/V

ppm/mA

µA

MAX873/MAX875/MAX876

Low-Power, Low-Drift, +2.5V/+5V/+10V
Precision Voltage References

4 _______________________________________________________________________________________

Typical Operating Characteristics

(VIN= +5V for V

OUT

= +2.5V, VIN= +15V for V

OUT

= +10V, I

OUT

= 0, TA= +25°C, unless otherwise noted.)

2.498

2.500

2.499

2.501

2.502

OUTPUT VOLTAGE vs. TEMPERATURE

(V

OUT

= 2.5V)

MAX873/75/76 toc01

TEMPERATURE (°C)

OUTPUT VOLTAGE (V)

-50 25 50-25 0 75 100 125

THREE TYPICAL PARTS

9.993

9.998

9.995

10.001

9.999

9.996

10.002

9.997

9.994

10.000

10.003

OUTPUT VOLTAGE vs. TEMPERATURE

(V

OUT

= 10V)

MAX873/75/76 toc02

TEMPERATURE (°C)

OUTPUT VOLTAGE (V)

-50 25 50-25 0 75 100 125

THREE TYPICAL PARTS

0.50

0.25

0

-0.25

-0.50
015510 202530

LOAD REGULATION vs.

SOURCE CURRENT (V

OUT

= 2.5V)

MAX873/75/76 toc03

SOURCE CURRENT (mA)

OUTPUT VOLTAGE CHANGE (mV)

TA = -40°C

TA = +125°C

TA = +25°C

0.50

0.25

0

-0.25

-0.50
015510 202530

LOAD REGULATION

vs. SOURCE CURRENT (V

OUT

= 10V)

MAX873/75/76 toc04

SOURCE CURRENT (mA)

OUTPUT VOLTAGE CHANGE (mV)

TA = +25°C

TA = +125°C

TA = -40°C

1.00

0.75

0.50

0.25

-0.25

0

-0.50

01.00.5 1.5 2.0

LOAD REGULATION

vs. SINK CURRENT (V

OUT

= 2.5V)

MAX873/75/76 toc05

SINK CURRENT (mA)

OUTPUT VOLTAGE CHANGE (mV)

TA = +25°C

TA = +125°C

TA = -40°C

2.0

1.5

1.0

0.5

-0.5

0

-1.0

01.00.5 1.5 2.0

LOAD REGULATION

vs. SINK CURRENT (V

OUT

= 10V)

MAX873/75/76 toc06

SINK CURRENT (mA)

OUTPUT VOLTAGE CHANGE (mV)

TA = -40°C

TA = +125°C

TA = +25°C

0

60

20

40

80

100

LINE REGULATION vs. TEMPERATURE

(V

OUT

= 2.5V)

MAX873/75/76 toc07

INPUT VOLTAGE (V)

OUTPUT VOLTAGE CHANGE (µV)

020255 1015 303540

TA = -40°C

TA = +125°C

TA = +25°C

0

150

50

100

200

250

300

LINE REGULATION vs. TEMPERATURE

(V

OUT

= 10V)

MAX873/75/76 toc08

INPUT VOLTAGE (V)

OUTPUT VOLTAGE CHANGE (µV)

12 28 3216 20 24 36 40

TA = -40°C

TA = +125°C

TA = +25°C

0.5

1.5

1.0

2.0

2.5

MINIMUM INPUT-OUTPUT DIFFERENTIAL

vs. SOURCE CURRENT (V

OUT

= 2.5V)

MAX873/75/76 toc09

SOURCE CURRENT (mA)

DROPOUT VOLTAGE (V)

0121648 20

TA = -40°C

TA = +125°C

TA = +25°C