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 3.8µVRMS, 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.
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: 3.8µVP-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
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.
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.
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 (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.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
MAX873A (0.06%) 2.4985 2.5000 2.5015
Output Voltage VOUT TA = +25°C MAX873B (0.10%) 2.4975 2.5000 2.5025 V
MAX873A 2 7
Output-Voltage Drift
(Note 1) TCVOUT MAX873B 5 20 ppm/°C
0.1Hz to 10Hz 3.8 µVP-P
Output-Noise Voltage enTA = +25°C 10Hz to 1kHz 6.8 µVRMS
TA = +25°C 1 4.0
Line Regulation VIN = 4.5V to 18V TA = -40°C to +85°C 2 6 ppm/V
TA = +25°C 3 15
IL = 0 to 10mA
(source) TA = -40°C to +85°C 3 20
TA = +25°C 100 900
Load Regulation
IL = 0 to -1mA (sink) TA = -40°C to +85°C 150 1900
ppm/mA
TA = +25°C 300 450
Quiescent Supply Current IQTA = -40°C to +85°C 300 600 µA
Short-Circuit Output Current ISC Output shorted to GND 60 mA
VOUT Adjust Range ±100 mV
Long-Term Output Drift 50 ppm/kh
TEMP PIN
Voltage Output VTEMP TA = +25°C 570 mV
Temperature Sensitivity TCVTEMP 1.9 mV/°C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
MAX875A (0.04%) 4.998 5.000 5.002
Output Voltage VOUT TA = +25°C MAX875B (0.06%) 4.997 5.000 5.003 V
MAX875A 2 7
Output Voltage Drift
(Note 1) TCVOUT MAX875B 5 20 ppm/°C
0.1Hz to 10Hz 9 µVP-P
Output-Noise Voltage enTA = +25°C 10Hz to 1kHz 14.5 µVRMS
TA = +25°C 1 4.0
Line Regulation VIN = 7V to 18V TA = -40°C to +85°C 2 6 ppm/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
_______________________________________________________________________________________ 3
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.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
MAX876A (0.03%) 9.997 10.000 10.003
Output Voltage VOUT TA = +25°C MAX876B (0.05%) 9.995 10.000 10.005 V
MAX876A 2 7
Output Voltage Drift
(Note 1) TCVOUT MAX876B 5 20 ppm/°C
0.1Hz to 10Hz 18 µVP-P
Output-Noise Voltage enTA = +25°C 10Hz to 1kHz 29 µVRMS
TA = +25°C 1 4.0
Line Regulation VIN = 12V to 18V TA = -40°C to +85°C 1 6 ppm/V
TA = +25°C 1 15
IL = 0 to 10mA
(source) TA = -40°C to +85°C 1 20
TA = +25°C 100 900
Load Regulation
IL = 0 to -1mA (sink) TA = -40°C to +85°C 150 1900
ppm/mA
TA = +25°C 320 550
Quiescent Supply Current IQTA = -40°C to +85°C 340 700 µA
Short-Circuit Output Current ISC Output shorted to GND 60 mA
VOUT Adjust Range ±600 mV
Long-Term Output Drift 50 ppm/kh
TEMP PIN
Voltage Output VTEMP TA = +25°C 630 mV
Temperature Sensitivity TCVTEMP 2.1 mV/°C
Note 1: Temperature coefficient is defined as maximum ∆VOUT divided by maximum ∆T of the temperature range.
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
TA = +25°C 3 15
IL = 0 to 10mA
(source) TA = -40°C to +85°C 3 20
TA = +25°C 100 900
Load Regulation
IL = 0 to -1mA (sink) TA = -40°C to +85°C 150 1900
ppm/mA
TA = +25°C 320 550
Quiescent Supply Current IQTA = -40°C to +85°C 320 700 µA
Short-Circuit Output Current ISC Output shorted to GND 60 mA
VOUT Adjust Range ±300 mV
Long-Term Output Drift 50 ppm/kh
TEMP PIN
Voltage Output VTEMP TA = +25°C 630 mV
Temperature Sensitivity TCVTEMP 2.1 mV/°C
MAX873/MAX875/MAX876
Low-Power, Low-Drift, +2.5V/+5V/+10V
Precision Voltage References
4 _______________________________________________________________________________________
Typical Operating Characteristics
(VIN = +5V for VOUT = +2.5V, VIN = +15V for VOUT = +10V, IOUT = 0, TA= +25°C, unless otherwise noted.)
2.498
2.500
2.499
2.501
2.502
OUTPUT VOLTAGE vs. TEMPERATURE
(VOUT = 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
(VOUT = 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 (VOUT = 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 (VOUT = 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 (VOUT = 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 (VOUT = 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
(VOUT = 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
(VOUT = 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 (VOUT = 2.5V)
MAX873/75/76 toc09
SOURCE CURRENT (mA)
DROPOUT VOLTAGE (V)
0121648 20
TA = -40°C
TA = +125°C
TA = +25°C
MAX873/MAX875/MAX876
Low-Power, Low-Drift, +2.5V/+5V/+10V
Precision Voltage References
_______________________________________________________________________________________
5
Typical Operating Characteristics (continued)
(VIN = +5V for VOUT = +2.5V, VIN = +15V for VOUT = +10V, IOUT = 0, TA= +25°C, unless otherwise noted.)
0.5
1.5
1.0
2.0
2.5
MINIMUM INPUT-OUTPUT DIFFERENTIAL
vs. SOURCE CURRENT (VOUT = 10V)
MAX873/75/76 toc10
SOURCE CURRENT (mA)
DROPOUT VOLTAGE (V)
0121648 20
TA = -40°C
TA = +125°C
TA = +25°C
-140
-100
-120
-60
-80
-20
-40
0
0.001 0.1 10.01 10 100 1000
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (VOUT = 2.5V)
MAX873/75/76 toc11
FREQUENCY (kHz)
PSRR (dB)
-120
-100
-60
-80
-20
-40
0
0.001 0.1 10.01 10 100 1000
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (VOUT = 10V)
MAX873/75/76 toc12
FREQUENCY (kHz)
PSRR (dB)
0.001
0.1
0.01
10
1
100
0.1 10.01 10 100 1000
OUTPUT IMPEDANCE vs. FREQUENCY
(VOUT = 2.5V)
MAX873/75/76 toc13
FREQUENCY (kHz)
OUTPUT IMPEDANCE (Ω)
0
100
50
200
150
250
300
350
400
010155 2025303540
SUPPLY CURRENT vs. INPUT VOLTAGE
(VOUT = 2.5V)
MAX873/75/76 toc14
INPUT VOLTAGE (V)
SUPPLY CURRENT (µA)
TA = -40°C
TA = +125°C
TA = +25°C
0
100
50
200
150
250
300
350
400
010155 2025303540
SUPPLY CURRENT vs. INPUT VOLTAGE
(VOUT = 10V)
MAX873/75/76 toc15
INPUT VOLTAGE (V)
SUPPLY CURRENT (µA)
TA = -40°C
TA = +125°C
TA = +25°C
250
300
275
325
350
-50 -25 0 25 50 75 100 125
SUPPLY CURRENT vs. TEMPERATURE
(VOUT = 2.5V)
MAX873/75/76 toc16
TEMPERATURE (°C)
SUPPLY CURRENT (µA)
250
325
300
275
350
375
-50 -25 0 25 50 75 100 125
SUPPLY CURRENT vs. TEMPERATURE
(VOUT = 10V)
MAX873/75/76 toc17
TEMPERATURE (°C)
SUPPLY CURRENT (µA)
400
600
500
700
800
-50 -25 0 25 50 75 100 125
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
6 _______________________________________________________________________________________
Typical Operating Characteristics (continued)
(VIN = +5V for VOUT = +2.5V, VIN = +15V for VOUT = +10V, IOUT = 0, TA= +25°C, unless otherwise noted.)
400
600
500
800
700
900
-50 -25 0 25 50 75 100 125
TEMP VOLTAGE
vs. TEMPERATURE (VOUT = 10V)
MAX873/75/76 toc19
TEMPERATURE (°C)
TEMP VOLTAGE (mV)
2.35
2.50
2.45
2.40
2.60
2.55
2.65
0 0.5 1.0 1.5 2.0 2.5
OUTPUT VOLTAGE
vs. TRIM VOLTAGE (VOUT = 2.5V)
MAX873/75/76 toc20
TRIM VOLTAGE (V)
OUTPUT VOLTAGE (V)
2.498
2.500
2.499
2.501
2.502
0 200 400 600 800 1000
LONG-TERM STABILITY vs. TIME
(VOUT = 2.500V)
MAX873/75/76 toc21
TIME (hours)
VOUT (V)
TWO TYPICAL PARTS
9.998
10.000
9.999
10.001
10.002
0 200 400 600 800 1000
LONG-TERM STABILITY vs. TIME
(VOUT = 10.0V)
MAX873/75/76 toc22
TIME (hours)
VOUT (V)
TWO TYPICAL PARTS
1000
100
OUTPUT-VOLTAGE NOISE DENSITY
vs. FREQUENCY (VOUT = 2.5V)
MAX873/75/76 toc23
FREQUENCY (Hz)
OUTPUT VOLTAGE-NOISE DENSITY (nV/√Hz)
0.1 100 1000110
10,000
1000
100
OUTPUT-VOLTAGE NOISE DENSITY
vs. FREQUENCY (VOUT = 10V)
MAX873/75/76 toc24
FREQUENCY (Hz)
OUTPUT VOLTAGE-NOISE DENSITY (nV/√Hz)
0.1 100 1000110
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
MAX873/MAX875/MAX876
Low-Power, Low-Drift, +2.5V/+5V/+10V
Precision Voltage References
_______________________________________________________________________________________
7
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)
MAX873/75/76 toc28
IOUT
VOUT
AC-COUPLED
1V/div
0
20mA
10µs/div
LOAD TRANSIENT
(VOUT = 2.5V, COUT = 1µF, 0 TO +20mA)
MAX873/75/76 toc29
IOUT
VOUT
AC-COUPLED
50mV/div
0
20mA
200µs/div
LOAD TRANSIENT
(VOUT = 10V, COUT = 1µF, 0 TO 20mA)
MAX873/75/76 toc30
IOUT
VOUT
AC-COUPLED
100mV/div
0
20mA
100µs/div
LOAD TRANSIENT
(VOUT = 2.5V, COUT = 0, 0 TO -2mA)
MAX873/75/76 toc31
IOUT
VOUT
AC-COUPLED
200mV/div
0
-2mA
40µs/div
LOAD TRANSIENT
(VOUT = 10V, COUT = 0, 0 TO -2mA)
MAX873/75/76 toc32
IOUT
VOUT
AC-COUPLED
20mV/div
0
-2mA
200µs/div
MAX873/MAX875/MAX876
Low-Power, Low-Drift, +2.5V/+5V/+10V
Precision Voltage References
8 _______________________________________________________________________________________
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 = 2.5V, COUT = 1µF, 0 TO -2mA)
MAX873/75/76 toc33
IOUT
VOUT
AC-COUPLED
20mV/div
0
-2mA
400µs/div
LOAD TRANSIENT
(VOUT = 10V, COUT = 1µF, 0 TO -2mA)
MAX873/75/76 toc34
IOUT
VOUT
AC-COUPLED
5mV/div
0
-2mA
400µs/div
LINE TRANSIENT
(VOUT = 2.5V)
MAX873/75/76 toc35
VIN
VOUT
AC-COUPLED
200mV/div
5.5V
4.5V
10µs/div
COUT = 0
LINE TRANSIENT
(VOUT = 10V)
MAX873/75/76 toc36
VIN
1V/div
VOUT
AC-COUPLED
200mV/div
15.5V
14.5V
2µs/div
TURN-ON TRANSIENT
(VOUT = 2.5V, COUT = 0)
MAX873/75/76 toc37
VIN
2V/div
VOUT
1V/div
GND
GND
10µs/div
COUT = 0
TURN-ON TRANSIENT
(VOUT = 2.5V, COUT = 1µF)
MAX873/75/76 toc38
VIN
2V/div
VOUT
1V/div
GND
GND
40µs/div
MAX873/MAX875/MAX876
Low-Power, Low-Drift, +2.5V/+5V/+10V
Precision Voltage References
_______________________________________________________________________________________ 9
Detailed Description
The MAX873/MAX875/MAX876 precision voltage refer-
ences provide accurate preset +2.5V, +5.0V, and +10V
reference voltages from up to +40V input voltages. These
devices feature a proprietary temperature-coefficient
curvature-correction circuit and laser-trimmed thin-film
resistors that result in a very low 3ppm/°C temperature
coefficient and excellent 0.05% initial accuracy. The
MAX873/MAX875/MAX876 draw 340µA of supply current
and source 30mA or sink 2mA of load current.
Trimming the Output Voltage
Trim the factory-preset output voltage on the
MAX873/MAX875/MAX876 by placing a resistive divider
network between OUT, TRIM, and GND.
Use the following formula to calculate the change in
output voltage from its preset value:
∆VOUT = 2 x (VTRIM - VTRIM (open)) x k
where:
VTRIM = 0V to VOUT
VTRIM (open) = VOUT (nominal) / 2 (typ)
k = ±6% (typ)
For example, use a 50kΩpotentiometer (such as the
MAX5436) between OUT, TRIM, and GND with the
potentiometer wiper connected to TRIM (see Figure 2).
As the TRIM voltage changes from VOUT to GND, the
output voltage changes accordingly. Set R2 to 1MΩor
less. Currents through resistors R1 and R2 add to the
quiescent supply current.
Typical Operating Characteristics (continued)
(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)
MAX873/75/76 toc39
VIN
5V/div
VOUT
5V/div
GND
GND
100µs/div
TURN-ON TRANSIENT
(VOUT = 10V, COUT = 1µF)
MAX873/75/76 toc40
VIN
5V/div
VOUT
5V/div
GND
GND
200µs/div
PIN NAME FUNCTION
1, 8 I.C. Internally Connected. Do not connect externally.
2 IN Positive Power-Supply Input
3 TEMP Temperature Proportional Output Voltage. TEMP generates an output voltage proportional to the die
temperature.
4 GND Ground
5 TRIM Output Voltage Trim. Connect TRIM to the center of a voltage-divider between OUT and GND for
trimming. Leave unconnected to use the preset output voltage.
6 OUT Output Voltage
7 N.C. No Connection. Not internally connected.
Pin Description
MAX873/MAX875/MAX876
Low-Power, Low-Drift, +2.5V/+5V/+10V
Precision Voltage References
10 ______________________________________________________________________________________
Temp Output
The MAX873/MAX875/MAX876 provide a temperature
output proportional to die temperature. TEMP can be cal-
culated from the following formula:
TEMP (V) = TJ(°K) x n
where TJ= the die temperature,
n = the temperature multiplier,
TA= the ambient temperature.
Self-heating affects the die temperature and conversely,
the TEMP output. The TEMP equation assumes the output
is not loaded. If device power dissipation is negligible,
then TJ≈TA.
Applications Information
Bypassing/Output Capacitance
For the best line-transient performance, decouple the
input with a 0.1µF ceramic capacitor as shown in the
Typical Operating Circuit
. Place the capacitor as close
to IN as possible. When transient performance is less
important, no capacitor is necessary.
The MAX873/MAX875/MAX876 do not require an output
capacitor for stability and are stable with capacitive
loads up to 100µF. In applications where the load or the
supply can experience step changes, a larger output
capacitor reduces the amount of overshoot (under-
shoot) and improves the circuit’s transient response.
Place output capacitors as close to the devices as pos-
sible for best performance.
Supply Current
The MAX873/MAX875/MAX876 consume 320µA (typ) of
quiescent supply current. This improved efficiency
reduces power dissipation and extends battery life.
Thermal Hysteresis
Thermal hysteresis is the change in the output voltage
at TA= +25°C before and after the device is cycled
over its entire operating temperature range. Hysteresis
is caused by differential package stress appearing
across the bandgap core transistors. The typical ther-
mal hysteresis value is 120ppm.
Turn-On Time
The MAX873/MAX875/MAX876 typically turn on and settle
to within 0.1% of the preset output voltage in 150µs
(2.5V output). The turn-on time can increase up to
150µs with the device operating with a 1µF load.
Short-Circuited Outputs
The MAX873/MAX875/MAX876 feature a short-circuit-pro-
tected output. Internal circuitry limits the output current
to 60mA when short circuiting the output to ground.
The output current is limited to 3mA when short circuit-
ing the output to the input.
nVatTT
TmV K
TEMP J
( )
./==≅°
0
0
19
TEMPERATURE
COEFFICIENT
(ppm/°C)
110 100
16-BIT
14-BIT
12-BIT
10-BIT
8-BIT
0.01
0.1
10
100
1000
1
10,000
18-BIT
20-BIT
OPERATING TEMPERATURE RANGE (TMAX - TMIN) (°C)
Figure 1. Temperature Coefficient vs. Operating Temperature Range for a 1 LSB Maximum Error
MAX873/MAX875/MAX876
Low-Power, Low-Drift, +2.5V/+5V/+10V
Precision Voltage References
______________________________________________________________________________________ 11
Temperature Coefficient vs. Operating
Temperature Range for a
1 LSB Maximum Error
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 resolu-
tion limit through the operating temperature range.
Figure 1 shows the maximum allowable reference-volt-
age temperature coefficient to keep the conversion
error to less than 1 LSB, as a function of the operating
temperature range (TMAX - TMIN) with the converter
resolution as a parameter. The graph assumes the ref-
erence-voltage temperature coefficient as the only
parameter affecting accuracy.
In reality, the absolute static accuracy of a data con-
verter is dependent on the combination of many para-
meters such as integral nonlinearity, differential
nonlinearity, offset error, gain error, as well as voltage-
reference changes.
IN
OUT
GND
*OPTIONAL.
*
( VOUT + 2V) TO 40V INPUT
REFERENCE
OUTPUT
MAX5436
50kΩ
POTENTIOMETER
TRIM
TEMP
MAX873
MAX875
MAX876
Figure 2. Applications Circuit Using the MAX5436 Potentiometer
Chip Information
TRANSISTOR COUNT: 429
PROCESS: BiCMOS
OUT
TRIMGND
*INTERNALLY CONNECTED. DO NOT CONNECT.
1
2
8
7
I.C.*
N.C.IN
TEMP
I.C.*
SO
TOP VIEW
3
4
6
5
MAX873
MAX875
MAX876
Pin Configuration
MAX873/MAX875/MAX876
Low-Power, Low-Drift, +2.5V/+5V/+10V
Precision Voltage References
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
12
____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2007 Maxim Integrated Products is a registered trademark of Maxim Integrated Products, Inc.
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.)
SOICN .EPS
PACKAGE OUTLINE, .150" SOIC
1
1
21-0041 B
REV.DOCUMENT CONTROL NO.APPROVAL
PROPRIETARY INFORMATION
TITLE:
TOP VIEW
FRONT VIEW
MAX
0.010
0.069
0.019
0.157
0.010
INCHES
0.150
0.007
E
C
DIM
0.014
0.004
B
A1
MIN
0.053A
0.19
3.80 4.00
0.25
MILLIMETERS
0.10
0.35
1.35
MIN
0.49
0.25
MAX
1.75
0.050
0.016L0.40 1.27
0.3940.386D
D
MINDIM
D
INCHES
MAX
9.80 10.00
MILLIMETERS
MIN MAX
16 AC
0.337 0.344 AB8.758.55 14
0.189 0.197 AA5.004.80 8
N MS012
N
SIDE VIEW
H 0.2440.228 5.80 6.20
e 0.050 BSC 1.27 BSC
C
HE
eBA1
A
D
0∞-8∞
L
1
VARIATIONS:
Revision History
Pages changed at Rev 3: 1–12