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 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.
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
Applications
12-Bit ADCs and DACs
Digital Multimeters
Portable Data-Acquisition Systems
Low-Power Test Equipment
0.1µF*
V+
Typical Operating Circuit
IN
MAX873
MAX875
MAX876
OUT
+2.5V (MAX873)
+5.0V (MAX875)
+10.0V (MAX876)
*OPTIONAL
GND
Pin Configuration appears at end of data sheet.
0V
Ordering Information/Selector Guide
PART
MAX873AESA+
MAX873BESA+
MAX875AESA+
MAX875BESA+
MAX876AESA+
PIN-
PACKAGE
8 SO
8 SO
8 SO
8 SO
8 SO
OUTPUT
VOLTAGE
(V)
2.500
2.500
5.000
5.000
10.000
MAX
TEMPCO
(ppm/°C)
7
20
7
20
7
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
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.
________________________________________________________________
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 (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
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.
ELECTRICAL CHARACTERISTICS—MAX873
(V
IN
= +5V, I
L
= 0mA, C
LOAD
< 100pF, T
A
= -40°C to +85°C, unless otherwise noted.)
PARAMETER
Output Voltage
Output-Voltage Drift
(Note 1)
Output-Noise Voltage
Line Regulation
SYMBOL
V
OUT
TCV
OUT
e
n
T
A
= +25°C
MAX873A
MAX873B
T
A
= +25°C
V
IN
= 4.5V to 18V
I
L
= 0 to 10mA
(source)
Load Regulation
I
L
= 0 to -1mA (sink)
Quiescent Supply Current
Short-Circuit Output Current
V
OUT
Adjust Range
Long-Term Output Drift
TEMP PIN
Voltage Output
Temperature Sensitivity
V
TEMP
TCV
TEMP
T
A
= +25°C
570
1.9
mV
mV/°C
I
Q
I
SC
T
A
= +25°C
T
A
= -40°C to +85°C
Output shorted to GND
0.1Hz to 10Hz
10Hz to 1kHz
T
A
= +25°C
T
A
= -40°C to +85°C
T
A
= +25°C
T
A
= -40°C to +85°C
T
A
= +25°C
T
A
= -40°C to +85°C
CONDITIONS
MAX873A (0.06%)
MAX873B (0.10%)
MIN
2.4985
2.4975
TYP
2.5000
2.5000
2
5
3.8
6.8
1
2
3
3
100
150
300
300
60
±100
50
4.0
6
15
20
900
1900
450
600
µA
mA
mV
ppm/kh
ppm/mA
MAX
2.5015
2.5025
7
20
UNITS
V
ppm/°C
µV
P-P
µV
RMS
ppm/V
ELECTRICAL CHARACTERISTICS—MAX875
(V
IN
= +15V, I
L
= 0mA, C
LOAD
< 100pF, T
A
= -40°C to +85°C, unless otherwise noted.)
PARAMETER
Output Voltage
Output Voltage Drift
(Note 1)
Output-Noise Voltage
Line Regulation
SYMBOL
V
OUT
TCV
OUT
e
n
T
A
= +25°C
MAX875A
MAX875B
T
A
= +25°C
V
IN
= 7V to 18V
0.1Hz to 10Hz
10Hz to 1kHz
T
A
= +25°C
T
A
= -40°C to +85°C
CONDITIONS
MAX875A (0.04%)
MAX875B (0.06%)
MIN
4.998
4.997
TYP
5.000
5.000
2
5
9
14.5
1
2
4.0
6
MAX
5.002
5.003
7
20
UNITS
V
ppm/°C
µV
P-P
µV
RMS
ppm/V
2
_______________________________________________________________________________________
Low-Power, Low-Drift, +2.5V/+5V/+10V
Precision Voltage References
ELECTRICAL CHARACTERISTICS—MAX875 (continued)
(V
IN
= +15V, I
L
= 0mA, C
LOAD
< 100pF, T
A
= -40°C to +85°C, unless otherwise noted.)
PARAMETER
SYMBOL
I
L
= 0 to 10mA
(source)
Load Regulation
I
L
= 0 to -1mA (sink)
Quiescent Supply Current
Short-Circuit Output Current
V
OUT
Adjust Range
Long-Term Output Drift
TEMP PIN
Voltage Output
Temperature Sensitivity
V
TEMP
TCV
TEMP
T
A
= +25°C
630
2.1
mV
mV/°C
I
Q
I
SC
T
A
= +25°C
T
A
= -40°C to +85°C
Output shorted to GND
CONDITIONS
T
A
= +25°C
T
A
= -40°C to +85°C
T
A
= +25°C
T
A
= -40°C to +85°C
MIN
TYP
3
3
100
150
320
320
60
±300
50
MAX
15
20
900
1900
550
700
µA
mA
mV
ppm/kh
ppm/mA
UNITS
MAX873/MAX875/MAX876
ELECTRICAL CHARACTERISTICS—MAX876
(V
IN
= +15V, I
L
= 0mA, C
LOAD
< 100pF, T
A
= -40°C to +85°C, unless otherwise noted.)
PARAMETER
Output Voltage
Output Voltage Drift
(Note 1)
Output-Noise Voltage
Line Regulation
SYMBOL
V
OUT
TCV
OUT
e
n
T
A
= +25°C
MAX876A
MAX876B
T
A
= +25°C
V
IN
= 12V to 18V
I
L
= 0 to 10mA
(source)
Load Regulation
I
L
= 0 to -1mA (sink)
Quiescent Supply Current
Short-Circuit Output Current
V
OUT
Adjust Range
Long-Term Output Drift
TEMP PIN
Voltage Output
Temperature Sensitivity
V
TEMP
TCV
TEMP
T
A
= +25°C
630
2.1
mV
mV/°C
I
Q
I
SC
T
A
= +25°C
T
A
= -40°C to +85°C
Output shorted to GND
0.1Hz to 10Hz
10Hz to 1kHz
T
A
= +25°C
T
A
= -40°C to +85°C
T
A
= +25°C
T
A
= -40°C to +85°C
T
A
= +25°C
T
A
= -40°C to +85°C
CONDITIONS
MAX876A (0.03%)
MAX876B (0.05%)
MIN
9.997
9.995
TYP
10.000
10.000
2
5
18
29
1
1
1
1
100
150
320
340
60
±600
50
4.0
6
15
20
900
1900
550
700
µA
mA
mV
ppm/kh
ppm/mA
MAX
10.003
10.005
7
20
UNITS
V
ppm/°C
µV
P-P
µV
RMS
ppm/V
Note 1:
Temperature coefficient is defined as maximum
∆V
OUT
divided by maximum
∆T
of the temperature range.
_______________________________________________________________________________________
3
Low-Power, Low-Drift, +2.5V/+5V/+10V
Precision Voltage References
MAX873/MAX875/MAX876
Typical Operating Characteristics
(V
IN
= +5V for V
OUT
= +2.5V, V
IN
= +15V for V
OUT
= +10V, I
OUT
= 0, T
A
= +25°C, unless otherwise noted.)
OUTPUT VOLTAGE vs. TEMPERATURE
(V
OUT
= 2.5V)
MAX873/75/76 toc01
OUTPUT VOLTAGE vs. TEMPERATURE
(V
OUT
= 10V)
MAX873/75/76 toc02
LOAD REGULATION vs.
SOURCE CURRENT (V
OUT
= 2.5V)
MAX873/75/76 toc03
2.502
10.003
10.002
10.001
OUTPUT VOLTAGE (V)
10.000
9.999
9.998
9.997
9.996
9.995
0.50
OUTPUT VOLTAGE CHANGE (mV)
2.501
OUTPUT VOLTAGE (V)
0.25
T
A
= +25°C
0
T
A
= -40°C
2.500
2.499
THREE TYPICAL PARTS
2.498
-50
-25
0
25
50
75
100
125
TEMPERATURE (°C)
-0.25
T
A
= +125°C
-0.50
0
5
10
15
20
25
30
SOURCE CURRENT (mA)
9.994
9.993
-50
THREE TYPICAL PARTS
-25
0
25
50
75
100
125
TEMPERATURE (°C)
LOAD REGULATION
vs. SOURCE CURRENT (V
OUT
= 10V)
MAX873/75/76 toc04
LOAD REGULATION
vs. SINK CURRENT (V
OUT
= 2.5V)
MAX873/75/76 toc05
LOAD REGULATION
vs. SINK CURRENT (V
OUT
= 10V)
MAX873/75/76 toc06
0.50
OUTPUT VOLTAGE CHANGE (mV)
T
A
= +25°C
0.25
T
A
= +125°C
0
1.00
OUTPUT VOLTAGE CHANGE (mV)
0.75
0.50
T
A
= +125°C
0.25
0
T
A
= -40°C
-0.25
-0.50
T
A
= +25°C
2.0
OUTPUT VOLTAGE CHANGE (mV)
1.5
T
A
= -40°C
1.0
0.5
0
-0.5
-1.0
T
A
= +25°C
T
A
= +125°C
-0.25
T
A
= -40°C
-0.50
0
5
10
15
20
25
30
SOURCE CURRENT (mA)
0
0.5
1.0
SINK CURRENT (mA)
1.5
2.0
0
0.5
1.0
SINK CURRENT (mA)
1.5
2.0
LINE REGULATION vs. TEMPERATURE
(V
OUT
= 2.5V)
MAX873/75/76 toc07
LINE REGULATION vs. TEMPERATURE
(V
OUT
= 10V)
MAX873/75/76 toc08
MINIMUM INPUT-OUTPUT DIFFERENTIAL
vs. SOURCE CURRENT (V
OUT
= 2.5V)
MAX873/75/76 toc09
100
300
250
T
A
= +125°C
200
150
100
50
0
T
A
= -40°C
2.5
OUTPUT VOLTAGE CHANGE (µV)
80
T
A
= -40°C
60
T
A
= +125°C
40
OUTPUT VOLTAGE CHANGE (µV)
DROPOUT VOLTAGE (V)
2.0
T
A
= +125°C
1.5
T
A
= +25°C
1.0
T
A
= -40°C
20
T
A
= +25°C
0
0
5
10
15
20
25
30
35
40
INPUT VOLTAGE (V)
T
A
= +25°C
0.5
12
16
20
24
28
32
36
40
0
4
8
12
16
20
INPUT VOLTAGE (V)
SOURCE CURRENT (mA)
4
_______________________________________________________________________________________
Low-Power, Low-Drift, +2.5V/+5V/+10V
Precision Voltage References
Typical Operating Characteristics (continued)
(V
IN
= +5V for V
OUT
= +2.5V, V
IN
= +15V for V
OUT
= +10V, I
OUT
= 0, T
A
= +25°C, unless otherwise noted.)
MAX873/MAX875/MAX876
MINIMUM INPUT-OUTPUT DIFFERENTIAL
vs. SOURCE CURRENT (V
OUT
= 10V)
MAX873/75/76 toc10
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (V
OUT
= 2.5V)
MAX873/75/76 toc11
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (V
OUT
= 10V)
-20
-40
PSRR (dB)
-60
-80
MAX873/75/76 toc12
2.5
0
-20
-40
PSRR (dB)
-60
-80
-100
-120
0
DROPOUT VOLTAGE (V)
2.0
T
A
= +125°C
1.5
T
A
= +25°C
1.0
T
A
= -40°C
-100
-120
0.001
0.5
0
4
8
12
16
20
SOURCE CURRENT (mA)
-140
0.001
0.01
0.1
1
10
100
1000
0.01
0.1
1
10
100
1000
FREQUENCY (kHz)
FREQUENCY (kHz)
OUTPUT IMPEDANCE vs. FREQUENCY
(V
OUT
= 2.5V)
MAX873/75/76 toc13
SUPPLY CURRENT vs. INPUT VOLTAGE
(V
OUT
= 2.5V)
MAX873/75/76 toc14
SUPPLY CURRENT vs. INPUT VOLTAGE
(V
OUT
= 10V)
350
SUPPLY CURRENT (µA)
300
250
200
150
100
50
0
0
5
10
15
20
25
30
35
40
T
A
= -40°C
T
A
= +25°C
T
A
= +125°C
MAX873/75/76 toc15
100
400
350
SUPPLY CURRENT (µA)
300
250
200
150
100
T
A
= -40°C
T
A
= +25°C
T
A
= +125°C
400
OUTPUT IMPEDANCE (Ω)
10
1
0.1
0.01
50
0.001
0.01
0.1
1
10
100
1000
FREQUENCY (kHz)
0
0
5
10
15
20
25
30
35
40
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
SUPPLY CURRENT vs. TEMPERATURE
(V
OUT
= 2.5V)
MAX873/75/76 toc16
SUPPLY CURRENT (µA)
SUPPLY CURRENT (µA)
325
350
MAX873/75/76 toc17
700
TEMP VOLTAGE (mV)
325
300
600
300
275
275
500
250
-50
-25
0
25
50
75
100
125
TEMPERATURE (°C)
250
-50
-25
0
25
50
75
100
125
TEMPERATURE (°C)
400
-50
-25
0
25
50
75
100
125
TEMPERATURE (°C)
_______________________________________________________________________________________
MAX873/75/76 toc18
350
SUPPLY CURRENT vs. TEMPERATURE
(V
OUT
= 10V)
375
800
TEMP VOLTAGE
vs. TEMPERATURE (V
OUT
= 2.5V)
5
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
