Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsPMICsPMIC - voltage reference Series Adjustable SOIC 8

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 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 3.8µV

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, tempera-

ture 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

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

V+

GND

0.1µF*

OUT

MAX873

MAX875

MAX876

Typical Operating Circuit

Pin Configuration appears at end of data sheet.

PART

PIN-

PACKAGE

OUTPUT

VOLTAGE

(V)

MAX

TEMPCO

(ppm/°C)

INITIAL

ACCURACY

PKG

CODE

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

Denotes a lead-free package.

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

Summary of content (12 pages)

PAGE 1
9-0038; Rev 3; 6/07 Low-Power, Low-Drift, +2.5V/+5V/+10V Precision Voltage References 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.
PAGE 2
MAX873/MAX875/MAX876 Low-Power, Low-Drift, +2.5V/+5V/+10V Precision Voltage References 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 ...........
PAGE 3
Low-Power, Low-Drift, +2.5V/+5V/+10V Precision Voltage References (VIN = +15V, IL = 0mA, CLOAD < 100pF, TA = -40°C to +85°C, unless otherwise noted.
PAGE 4
Typical Operating Characteristics (VIN = +5V for VOUT = +2.5V, VIN = +15V for VOUT = +10V, IOUT = 0, TA = +25°C, unless otherwise noted.) 2.500 2.499 MAX873/75/76 toc02 LOAD REGULATION vs. SOURCE CURRENT (VOUT = 2.5V) 10.001 10.000 9.999 9.998 9.997 9.996 9.995 9.994 THREE TYPICAL PARTS 2.498 -25 0 25 50 75 100 125 0 -0.25 TA = +125°C -50 -25 0 25 50 75 100 -0.50 125 0 5 10 15 20 25 TEMPERATURE (°C) SOURCE CURRENT (mA) LOAD REGULATION vs.
PAGE 5
Low-Power, Low-Drift, +2.5V/+5V/+10V Precision Voltage References MAX873/MAX875/MAX876 Typical Operating Characteristics (continued) (VIN = +5V for VOUT = +2.5V, VIN = +15V for VOUT = +10V, IOUT = 0, TA = +25°C, unless otherwise noted.) -40 TA = +25°C -20 -40 PSRR (dB) PSRR (dB) 1.5 MAX873/75/76 toc12 -20 TA = +125°C 0 MAX873/75/76 toc11 2.0 DROPOUT VOLTAGE (V) 0 MAX873/75/76 toc10 2.5 POWER-SUPPLY REJECTION RATIO vs. FREQUENCY (VOUT = 10V) POWER-SUPPLY REJECTION RATIO vs.
PAGE 6
Typical Operating Characteristics (continued) (VIN = +5V for VOUT = +2.5V, VIN = +15V for VOUT = +10V, IOUT = 0, TA = +25°C, unless otherwise noted.) 600 2.60 TWO TYPICAL PARTS 2.501 2.55 VOUT (V) 700 2.502 MAX873/75/76 toc20 800 2.65 OUTPUT VOLTAGE (V) MAX873/75/76 toc19 900 2.50 2.500 2.45 2.499 500 2.40 400 2.498 2.35 -25 0 25 50 75 100 125 0 0.5 1.0 1.5 2.0 200 400 800 TIME (hours) LONG-TERM STABILITY vs. TIME (VOUT = 10.0V) OUTPUT-VOLTAGE NOISE DENSITY vs.
PAGE 7
Low-Power, Low-Drift, +2.5V/+5V/+10V Precision Voltage References MAX873/MAX875/MAX876 Typical Operating Characteristics (continued) (VIN = +5V for VOUT = +2.5V, VIN = +15V for VOUT = +10V, IOUT = 0, TA = +25°C, unless otherwise noted.) LOAD TRANSIENT (VOUT = 10V, COUT = 0, 0 TO 20mA) LOAD TRANSIENT (VOUT = 2.
PAGE 8
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.) LOAD TRANSIENT (VOUT = 10V, COUT = 1µF, 0 TO -2mA) LOAD TRANSIENT (VOUT = 2.
PAGE 9
Low-Power, Low-Drift, +2.5V/+5V/+10V Precision Voltage References (VIN = +5V for VOUT = +2.5V, VIN = +15V for VOUT = +10V, IOUT = 0, TA = +25°C, unless otherwise noted.) TURN-ON TRANSIENT (VOUT = 10V, COUT = 0) TURN-ON TRANSIENT (VOUT = 10V, COUT = 1µF) MAX873/75/76 toc39 MAX873/75/76 toc40 VIN 5V/div VIN 5V/div GND GND VOUT 5V/div VOUT 5V/div GND GND 100µs/div 200µs/div Pin Description PIN NAME FUNCTION 1, 8 I.C. Internally Connected. Do not connect externally.
PAGE 10
MAX873/MAX875/MAX876 Low-Power, Low-Drift, +2.5V/+5V/+10V Precision Voltage References Temp Output The MAX873/MAX875/MAX876 provide a temperature output proportional to die temperature. TEMP can be calculated from the following formula: TEMP (V) = TJ (°K) x n where TJ = the die temperature, n = the temperature multiplier, n = VTEMP (at TJ = T0 ) ≅ 1.9mV / °K T0 TA = the ambient temperature. Self-heating affects the die temperature and conversely, the TEMP output.
PAGE 11
Low-Power, Low-Drift, +2.5V/+5V/+10V Precision Voltage References In a data converter application, the reference voltage of the converter must stay within a certain limit to keep the error in the data converter smaller than the resolution limit through the operating temperature range.
PAGE 12
Package Information (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) DIM A A1 B C e E H L N E H INCHES MILLIMETERS MAX MIN 0.069 0.053 0.010 0.004 0.014 0.019 0.007 0.010 0.050 BSC 0.150 0.157 0.228 0.244 0.016 0.050 MAX MIN 1.35 1.75 0.10 0.25 0.35 0.49 0.19 0.25 1.27 BSC 3.80 4.00 5.80 6.20 0.40 SOICN .EPS MAX873/MAX875/MAX876 Low-Power, Low-Drift, +2.