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MAX6173–MAX6177
High-Precision Voltage References with
Temperature Sensor
General Description
The MAX6173–MAX6177 are low-noise, high-precision
voltage references. The 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 ±0.06%
initial accuracy. The MAX6173–MAX6177 provide a
TEMP output where the output voltage is proportional
to the die temperature, making the devices suitable for
a wide variety of temperature-sensing applications. The
devices also provide a TRIM input, allowing fine trimming
of the output voltage with a resistive divider network. Low
temperature drift and low noise make the devices ideal for
use with high-resolution A/D or D/A converters.
The MAX6173–MAX6177 provide accurate preset +2.5V,
+3.3V, +4.096V, +5.0V, and +10V reference voltages
and accept input voltages up to +40V. The devices draw
320μA (typ) of supply current and source 30mA or sink
2mA of load current. The MAX6173–MAX6177 use bandgap technology for low-noise performance and excellent
accuracy. The MAX6173–MAX6177 do not require an
output bypass capacitor for stability, and are stable with
capacitive loads up to 100μF. Eliminating the output
bypass capacitor saves valuable board area in spacecritical applications.
Benefits and Features
●● Wide (VOUT + 2V) to +40V Supply Voltage Range
●● Excellent Temperature Stability: 3ppm/°C (max)
●● Tight Initial Accuracy: 0.05% (max)
●● Low Noise: 3.8μVP-P (typ at 2.5V Output)
●● Sources up to 30mA Output Current
●● Low Supply Current: 450μA (max at +25°C)
●● Linear Temperature Transducer Voltage Output
●● +2.5V, +3.3V, +4.096V, +5.0V, or +10V Output
Voltages
●● Wide Operating Temperature Range: -40°C to
+125°C
●● No External Capacitors Required for Stability
●● Short-Circuit Protected
●● AEC-Q100 Qualified (Refer to Ordering Info Section
for /V parts)
Typical Operating Circuit
(VOUT + 2V) TO 40V INPUT
IN
The MAX6173–MAX6177 are available in an 8-pin SO
package and operate over the automotive (-40°C to
+125°C) temperature range.
Applications
●● ADCs
●● DACs
●● Digital Voltmeters
●● Automotive
●● Voltage Regulators
●● Threshold Detectors
Pin Configuration and Ordering Information appears at end
of data sheet.
19-3249; Rev 11; 4/19
*
MAX6173–MAX6177
TEMP
*OPTIONAL.
REFERENCE
OUTPUT
OUT
*
TRIM
GND
*
MAX6173–MAX6177
High-Precision Voltage References with
Temperature Sensor
Absolute Maximum Ratings
IN to GND...............................................................-0.3V to +42V
OUT, TRIM, TEMP to GND.........................-0.3V to (VIN + 0.3V)
Output Short-Circuit to GND.................................................... 5s
Continuous Power Dissipation (TA = +70°C) (Note1)
8-Pin SO (derate 7.6mW/°C above +70°C)..................606mW
Operating Temperature Range.......................... -40°C to +125°C
Junction Temperature.......................................................+150°C
Storage Temperature Range............................. -65°C to +150°C
Lead Temperature (soldering, 10s).................................. +300°C
Soldering Temperature (reflow)........................................+260°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.
Package Thermal Characteristics (Note 1)
8 SO
PACKAGE CODE
S8+4
Outline Number
21-0041
Land Pattern Number
90-0096
Thermal Resistance, Single-Layer Board
Junction to Ambient - θJA
170
Junction to Case - θJC
40
Thermal Resistance, Multi-Layer Board
Junction to Ambient - θJA
132°C/W
Junction to Case - θJC
38°C/W
8 SO
PACKAGE CODE
S8+22
Outline Number
21-0041
Land Pattern Number
90-0096
Thermal Resistance, Single-Layer Board
Junction to Ambient - θJA
170°C/W
Junction to Case - θJC
40°C/W
Thermal Resistance, Multi-Layer Board
Junction to Ambient - θJA
132°C/W
Junction to Case - θJC
38°C/W
For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”,
“#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing
pertains to the package regardless of RoHS status.
Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board.
For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial.
www.maximintegrated.com
Maxim Integrated │ 2
MAX6173–MAX6177
High-Precision Voltage References with
Temperature Sensor
Electrical Characteristics—MAX6173 (VOUT = 2.5V)
(VIN = +5V, TA = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
MAX6173A (0.06%)
2.4985
2.5
2.5015
MAX6173B (0.1%)
2.4975
2.5
2.5025
±3
±6
UNITS
OUTPUT
Output Voltage
VOUT
No load, TA = +25°C
Output Adjustment Range
∆VTRIM
RPOT = 10kΩ
Output-Voltage
Temperature Coefficient
(Note 3)
TCVOUT
TA = -40°C to
+125°C
Line Regulation (Note 4)
DVOUT/DVIN
Load Regulation (Note 4)
Output Short-Circuit
Current
DVOUT/DIOUT
ISC
Temperature Hysteresis
(Note 5)
DVOUT/
cycle
Long-Term Stability
DVOUT/
time
1.5
3
MAX6173BASA
3
10
Sourcing:
0 ≤ IOUT ≤ 10mA
Sinking:
-0.6mA ≤ IOUT ≤ 0
OUT shorted to GND
%
MAX6173AASA
TA = +25°C
4.5V ≤ VIN ≤ 40V
0.6
5
TA = -40°C to +125°C
0.8
10
TA = +25°C
2
10
TA = -40°C to +125°C
2
15
TA = +25°C
50
500
90
900
TA = -40°C to +125°C
60
OUT shorted to IN
V
ppm/°C
ppm/V
ppm/mA
mA
3
120
ppm
1000 hours at TA = +25°C
50
ppm
f = 0.1Hz to 10Hz
3.8
f = 10Hz to 1kHz
6.8
To VOUT = 0.1% of final value, COUT = 50pF
150
DYNAMIC
Noise Voltage
Turn-On Settling Time
INPUT
Supply Voltage Range
Quiescent Supply Current
eOUT
tR
VIN
Guaranteed by line regulation test
IIN
No load
TEMP OUTPUT
TEMP Output Voltage
TEMP Temperature
Coefficient
www.maximintegrated.com
TA = +25°C
4.5
µVP-P
µVRMS
µs
40.0
300
TA = -40°C to +125°C
450
600
V
µA
VTEMP
570
mV
TCTEMP
1.9
mV/°C
Maxim Integrated │ 3
MAX6173–MAX6177
High-Precision Voltage References with
Temperature Sensor
Electrical Characteristics—MAX6177 (VOUT = 3.3V)
(VIN = +10V, TA = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
MAX6177A (0.06%)
3.2980
3.3
3.3020
MAX6177B (0.1%)
3.2967
3.3
3.3033
±3
±6
UNITS
OUTPUT
Output Voltage
VOUT
No load, TA = +25°C
Output Adjustment Range
∆VTRIM
RPOT = 10kΩ
Output-Voltage
Temperature Coefficient
(Note 3)
TCVOUT
TA = -40°C to
+125°C
Line Regulation (Note 4)
DVOUT/DVIN
Load Regulation (Note 4)
Output Short-Circuit
Current
DVOUT/DIOUT
ISC
Temperature Hysteresis
(Note 5)
DVOUT/
cycle
Long-Term Stability
DVOUT/
time
1.5
3
MAX6177BASA
3
10
Sourcing:
0 ≤ IOUT ≤ 10mA
Sinking:
-0.6mA ≤ IOUT ≤ 0
OUT shorted to GND
%
MAX6177AASA
TA = +25°C
5.3V ≤ VIN ≤ 40V
0.6
5
TA = -40°C to +125°C
0.8
10
TA = +25°C
2
10
TA = -40°C to +125°C
2
15
TA = +25°C
50
500
90
900
TA = -40°C to +125°C
60
OUT shorted to IN
ppm/°C
ppm/V
ppm/mA
mA
3
1000 hours at TA = +25°C
V
120
ppm
50
ppm
DYNAMIC
Noise Voltage
Turn-On Settling Time
eOUT
tR
f = 0.1Hz to 10Hz
5
f = 10Hz to 1kHz
9.3
µVRMS
µVP-P
To VOUT = 0.1% of final value, COUT = 50pF
180
µs
INPUT
Supply Voltage Range
VIN
Guaranteed by line regulation test
Quiescent Supply Current
IIN
No load
TEMP OUTPUT
TEMP Output Voltage
TEMP Temperature
Coefficient
www.maximintegrated.com
TA = +25°C
5.3
40.0
320
TA = -40°C to +125°C
500
650
V
µA
VTEMP
630
mV
TCTEMP
2.1
mV/°C
Maxim Integrated │ 4
MAX6173–MAX6177
High-Precision Voltage References with
Temperature Sensor
Electrical Characteristics—MAX6174 (VOUT = 4.096V)
(VIN = +10V, TA = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
MAX6174A (0.06%)
4.0935
4.096
4.0985
MAX6174B (0.1%)
4.0919
4.096
4.1001
±3
±6
UNITS
OUTPUT
Output Voltage
VOUT
No load, TA = +25°C
Output Adjustment Range
DVTRIM
RPOT = 10kΩ
Output-Voltage Temperature
Coefficient (Note 3)
TCVOUT
TA = -40°C to +125°C
Line Regulation (Note 4)
DVOUT/
DVIN
6.1V ≤ VIN ≤ 40V
Load Regulation (Note 4)
DVOUT/
DIOUT
Output Short-Circuit Current
ISC
Temperature Hysteresis
(Note 5)
DVOUT/
cycle
Long-Term Stability
DVOUT/
time
1.5
3
MAX6174BASA
3
10
Sourcing:
0 ≤ IOUT ≤ 10mA
Sinking:
-0.6mA ≤ IOUT ≤ 0
OUT shorted to GND
%
MAX6174AASA
TA = +25°C
0.6
5
TA = -40°C to +125°C
0.8
10
TA = +25°C
2
10
TA = -40°C to +125°C
2
15
TA = +25°C
50
500
90
900
TA = -40°C to +125°C
60
OUT shorted to IN
ppm/°C
ppm/V
ppm/mA
mA
3
1000 hours at TA = +25°C
V
120
ppm
50
ppm
DYNAMIC
Noise Voltage
Turn-On Settling Time
INPUT
Supply Voltage Range
Quiescent Supply Current
eOUT
tR
f = 0.1Hz to 10Hz
7
f = 10Hz to 1kHz
11.5
To VOUT = 0.1% of final value, COUT = 50pF
200
VIN
Guaranteed by line regulation test
IIN
No load
TEMP OUTPUT
TEMP Output Voltage
TEMP Temperature
Coefficient
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VTEMP
TCTEMP
TA = +25°C
TA = -40°C to +125°C
6.1
TA = +25°C
µVP-P
µVRMS
µs
40.0
320
TA = -40°C to +125°C
500
650
475
630
300
785
1130
2.1
V
µA
mV
mV/°C
Maxim Integrated │ 5
MAX6173–MAX6177
High-Precision Voltage References with
Temperature Sensor
Electrical Characteristics—MAX6175 (VOUT = 5.0V)
(VIN = +15V, TA = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
MAX6175A (0.06%)
4.9970
5.0
5.0030
MAX6175B (0.1%)
4.9950
5.0
5.0050
±3
±6
UNITS
OUTPUT
Output Voltage
VOUT
No load, TA = +25°C
Output Adjustment Range
DVTRIM
RPOT = 10kΩ
Output-Voltage Temperature
Coefficient (Note 3)
TCVOUT
TA = -40°C to +125°C
Line Regulation (Note 4)
DVOUT/
DVIN
7V ≤ VIN ≤ 40V
Load Regulation (Note 4)
DVOUT/
DIOUT
Output Short-Circuit Current
ISC
Temperature Hysteresis
(Note 5)
DVOUT/
cycle
Long-Term Stability
DVOUT/
time
1.5
3
MAX6175BASA
3
10
Sourcing:
0 ≤ IOUT ≤ 10mA
Sinking:
-0.6mA ≤ IOUT ≤ 0
OUT shorted to GND
%
MAX6175AASA
TA = +25°C
0.6
5
TA = -40°C to +125°C
0.8
10
TA = +25°C
2
10
TA = -40°C to +125°C
2
15
TA = +25°C
50
500
90
900
TA = -40°C to +125°C
60
OUT shorted to IN
ppm/°C
ppm/V
ppm/mA
mA
3
1000 hours at TA = +25°C
V
120
ppm
50
ppm
DYNAMIC
Noise Voltage
Turn-On Settling Time
INPUT
Supply Voltage Range
Quiescent Supply Current
eOUT
tR
f = 0.1Hz to 10Hz
9
f = 10Hz to 1kHz
14.5
To VOUT = 0.1% of final value, COUT = 50pF
230
VIN
Guaranteed by line regulation test
IIN
No load
TEMP OUTPUT
TEMP Output Voltage
TEMP Temperature
Coefficient
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VTEMP
TCTEMP
TA = +25°C
TA = -40°C to +125°C
7.0
TA = +25°C
µVP-P
µVRMS
µs
40.0
320
TA = -40°C to +125°C
550
700
475
630
300
785
1130
2.1
V
µA
mV
mV/°C
Maxim Integrated │ 6
MAX6173–MAX6177
High-Precision Voltage References with
Temperature Sensor
ELECTRICAL CHARACTERISTICS—MAX6176 (VOUT = 10V)
(VIN = +15V, TA = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
MAX6176A (0.05%)
9.9950
10.0
10.0050
MAX6176B (0.1%)
9.9900
10.0
10.0100
±3
±6
UNITS
OUTPUT
Output Voltage
VOUT
No load, TA = +25°C
Output Adjustment Range
DVTRIM
RPOT = 10kΩ
Output-Voltage
Temperature Coefficient
(Note 3)
TCVOUT
TA = -40°C to +125°C
Line Regulation (Note 4)
DVOUT/
DVIN
12V ≤ VIN ≤ 40V
Load Regulation (Note 4)
DVOUT/
DIOUT
Output Short-Circuit
Current
ISC
Temperature Hysteresis
(Note 5)
DVOUT/
cycle
Long-Term Stability
DVOUT/
time
1.5
3
MAX6176BASA
3
10
Sourcing:
0 ≤ IOUT ≤ 10mA
Sinking:
-0.6mA ≤ IOUT ≤ 0
OUT shorted to GND
%
MAX6176AASA
TA = +25°C
0.6
5
TA = -40°C to +125°C
0.8
10
TA = +25°C
2
10
TA = -40°C to +125°C
2
15
TA = +25°C
50
500
90
900
TA = -40°C to +125°C
60
OUT shorted to IN
V
ppm/°C
ppm/V
ppm/mA
mA
3
120
ppm
1000 hours at TA = +25°C
50
ppm
f = 0.1Hz to 10Hz
18
f = 10Hz to 1kHz
29
To VOUT = 0.1% of final value, COUT = 50pF
400
DYNAMIC
Noise Voltage
Turn-On Settling Time
INPUT
Supply Voltage Range
Quiescent Supply Current
eOUT
tR
VIN
Guaranteed by line regulation test
IIN
No load
TEMP OUTPUT
TEMP Output Voltage
TEMP Temperature
Coefficient
Note
Note
Note
Note
TA = +25°C
12.0
µVP-P
µVRMS
µs
40.0
340
TA = -40°C to +125°C
550
700
V
µA
VTEMP
630
mV
TCTEMP
2.1
mV/°C
2: All devices are 100% production tested at TA = +25°C and guaranteed by design over TA = TMIN to TMAX, as specified.
3: Temperature coefficient is defined as ∆VOUT divided by the temperature range.
4: Line and load regulation specifications do not include the effects of self-heating.
5: Thermal hysteresis is defined as the change in +25°C output voltage before and after cycling the device from TMAX to TMIN.
www.maximintegrated.com
Maxim Integrated │ 7
MAX6173–MAX6177
High-Precision Voltage References with
Temperature Sensor
Typical Operating Characteristics
(VIN = +5V for VOUT = +2.5V, VIN = +15V for VOUT = 4.096V and VOUT = +10V, IOUT = 0, TA = +25°C, unless otherwise noted.)
4.097
10.001
4.096
4.0955
50
75
100
TEMPERATURE (°C)
0
25
50
75
TEMPERATURE (∞C)
LOAD REGULATION vs.
SOURCE CURRENT (VOUT = 2.5V)
LOAD REGULATION vs.
SOURCE CURRENT (VOUT = 4.096V)
TA = -40°C
0.25
TA = +25°C
0
-0.25
TA = +125°C
0
5
10
15
20
25
-50
TA = +125°C
TA = +25°C
0.25
0
TA = -40°C
-0.25
-0.25
5
10
15
20
25
SOURCE CURRENT (mA)
LOAD REGULATION
vs. SINK CURRENT (VOUT = 4.096V)
0.5
0.2
TA = +25°C
-0.1
-0.2
-0.3
0
0.5
1.0
1.5
SINK CURRENT (mA)
www.maximintegrated.com
2.0
-0.5
CLOAD = NO LOAD
0
0.5
1
1.5
SINK CURRENT (mA)
0
25
50
75
100
125
2
0.25
TA = +125°C
0
-0.25
TA = -40°C
0
5
10
15
20
25
30
SOURCE CURRENT (mA)
LOAD REGULATION
vs. SINK CURRENT (VOUT = 10V)
toc5b
0.3
0
-25
TA = +25°C
-0.50
30
0.4
0.1
-50
0.50
0
0
THREE TYPICAL PARTS
LOAD REGULATION
vs. SOURCE CURRENT (VOUT = 10V)
toc3b
-0.4
-0.50
9.993
TEMPERATURE (°C)
TA = +25°C
-0.5
OUTPUT VOLTAGE CHANGE (mV)
MAX6173 toc05
OUTPUT VOLTAGE CHANGE (mV)
0.50
125
COUT = 0
LOAD REGULATION
vs. SINK CURRENT (VOUT = 2.5V)
0.75
100
0.25
SOURCE CURRENT (mA)
1.00
-25
0.5
30
9.994
CLOAD = NO LOAD
OUTPUT VOLTAGE CHANGE (mV)
OUTPUT VOLTAGE CHANGE (mV)
125
9.996
MAX6173 toc04
25
9.997
2.0
1.5
MAX6173 toc06
0
9.998
OUTPUT VOLTAGE CHANGE (mV)
-25
OUTPUT VOLTAGE CHANGE (mV)
-50
4.094
9.999
9.995
4.0945
0.50
-0.50
10.000
4.0965
4.095
THREE TYPICAL PARTS
OUTPUT VOLTAGE vs. TEMPERATURE
(VOUT = 10V)
MAX6173 toc02
10.002
2.499
2.498
10.003
4.0975
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
2.500
toc1b
4.098
MAX6173 toc01
2.501
MAX6173 toc03
OUTPUT VOLTAGE (V)
2.502
OUTPUT VOLTAGE
vs. TEMPERATURE (VOUT = 4.096V)
OUTPUT VOLTAGE vs. TEMPERATURE
(VOUT = 2.5V)
TA = -40°C
1.0
TA = +125°C
0.5
0
TA = +25°C
-0.5
-1.0
0
0.5
1.0
1.5
2.0
SINK CURRENT (mA)
Maxim Integrated │ 8
MAX6173–MAX6177
High-Precision Voltage References with
Temperature Sensor
Typical Operating Characteristics (continued)
(VIN = +5V for VOUT = +2.5V, VIN = +15V for VOUT = 4.096V and VOUT = +10V, IOUT = 0, TA = +25°C, unless otherwise noted.)
TA = +125°C
40
20
TA = +25°C
0
0
5
10
15
20
25
30
35
20
0
MAX6173 toc09
1.5
TA = +25°C
1.0
0.5
4
8
12
CLOAD = NO LOAD
0
10
2.0
TA = -40°C
1.5
TA = +25°C
TA = +125°C
16
0.5
20
0
4
16
50
TA = +25°C
12
16
20
2.5
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (VOUT = 10V)
-100
32
36
40
MINIMUM INPUT-OUTPUT DIFFERENTIAL
vs. SOURCE CURRENT (VOUT = 10V)
TA = -40°C
1.5
TA = +25°C
1.0
0
-10
TA = +125°C
0
4
8
12
16
20
-60
PSRR vs. FREQUENCY
toc12a
VOUT = 4.096V
-20
-30
PSRR (dB)
PSRR (dB)
-80
28
2.0
0.5
20
-40
-60
24
SOURCE CURRENT (mA)
-20
-40
MAX6173 toc08
100
INPUT VOLTAGE (V)
MAX6173 toc12
0
MAX6173 toc11
-20
PSRR (dB)
12
TA = -40°C
150
SOURCE CURRENT (mA)
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (VOUT = 2.5V)
-40
-50
-60
-70
-80
-80
-100
-100
-90
-120
-140
0.001
8
TA = +125°C
200
0
40
toc9a
SOURCE CURRENT (mA)
0
20
30
INPUT VOLTAGE (V)
1.0
TA = +125°C
0
TA = +125°C
-40
2.5
DROPOUT VOLTAGE (V)
DROPOUT VOLTAGE (V)
TA = -40°C
TA = +100°C
250
MINIMUM INPUT-OUTPUT DIFFERENTIAL
vs. SOURCING CURRENT (VOUT = 4.096V)
MINIMUM INPUT-OUTPUT DIFFERENTIAL
vs. SOURCE CURRENT (VOUT = 2.5V)
2.0
TA = +25°C
-20
INPUT VOLTAGE (V)
2.5
TA = -10°C
40
-60
40
TA = -40°C
60
MAX6173 toc10
60
300
LINE REGULATION vs. TEMPERATURE
(VOUT = 10V)
TA = +65°C
80
OUTPUT VOLTAGE CHANGE (µV)
TA = -40°C
toc7b
DROPOUT VOLTAGE (V)
80
LINE REGULATION
vs. TEMPERATURE (VOUT = 4.096V)
100
OUTPUT VOLTAGE VARIATION ( V)
MAX6173 toc07
OUTPUT VOLTAGE CHANGE (µV)
100
LINE REGULATION vs. TEMPERATURE
(VOUT = 2.5V)
-110
0.01
0.1
1
10
FREQUENCY (kHz)
www.maximintegrated.com
100
1000
-120
0.001
0.01
0.1
1
10
FREQUENCY (kHz)
100
1000
-120
0.001
0.01
0.1
1
10
FREQUENCY (kHz)
100
1000
Maxim Integrated │ 9
MAX6173–MAX6177
High-Precision Voltage References with
Temperature Sensor
Typical Operating Characteristics (continued)
(VIN = +5V for VOUT = +2.5V, VIN = +15V for VOUT = 4.096V and VOUT = +10V, IOUT = 0, TA = +25°C, unless otherwise noted.)
0.1
10
1
0.1
1
10
100
0.001
0.001
1000
0.01
0.1
1
10
FREQUENCY (kHz)
MAX6173 toc14
300
TA = +25°C
250
TA = -40°C
200
150
300
200
150
0
15
20
25
30
35
TA = +25°C
250
50
10
40
0
5
275
0
25
50
75
TEMPERATURE (°C)
www.maximintegrated.com
100
125
1000
SUPPLY CURRENT vs. INPUT VOLTAGE
(VOUT = 10V)
TA = +125°C
TA = +25°C
200
TA = -40°C
150
100
0
5
10
15
20
25
30
35
40
375
SUPPLY CURRENT vs. TEMPERATURE
(VOUT = 10V)
COUT = 0
350
350
325
300
250
-25
100
INPUT VOLTAGE (V)
275
-50
0.1
1
10
FREQUENCY (kHz)
250
0
40
SUPPLY CURRENT (µA)
300
250
35
toc16b
375
MAX6173 toc16
325
15
20
25
30
INPUT VOLTAGE (V)
SUPPLY CURRENT
vs. TEMPERATURE (VOUT = 4.096V)
SUPPLY CURRENT (μA)
SUPPLY CURRENT (µA)
350
10
0.01
50
COUT = 0
INPUT VOLTAGE (V)
SUPPLY CURRENT vs. TEMPERATURE
(VOUT = 2.5V)
400
300
50
5
toc14b
350
100
0
0.1
350
100
0
1
0.001
0.001
1000
400
SUPPLY CURRENT ( A)
SUPPLY CURRENT (µA)
350
10
SUPPLY CURRENT
vs. INPUT VOLTAGE (VOUT = 4.096)
SUPPLY CURRENT vs. INPUT VOLTAGE
(VOUT = 2.5V)
TA = +125°C
100
SUPPLY CURRENT (µA)
0.01
toc13c
COUT = 1µF
0.01
FREQUENCY (kHz)
400
100
0.01
0.01
0.001
toc13b
COUT = 0
MAX6173 toc15
1
OUTPUT IMPEDANCE
vs. FREQUENCY (VOUT = 4.096V)
OUTPUT IMPEDANCE (Ω)
10
100
OUTPUT IMPEDANCE (Ω)
MAX6173 toc13
OUTPUT IMPEDANCE (Ω)
100
OUTPUT IMPEDANCE
vs. FREQUENCY (VOUT = 4.096V)
MAX6173 toc17
OUTPUT IMPEDANCE vs. FREQUENCY
(VOUT = 2.5V)
325
300
275
-50
-25
0
25
50
75
TEMPERATURE (°C)
100
125
250
-50
-25
0
25
50
75
100
125
TEMPERATURE (°C)
Maxim Integrated │ 10
MAX6173–MAX6177
High-Precision Voltage References with
Temperature Sensor
Typical Operating Characteristics (continued)
(VIN = +5V for VOUT = +2.5V, VIN = +15V for VOUT = 4.096V and VOUT = +10V, IOUT = 0, TA = +25°C, unless otherwise noted.)
600
400
TEMPERATURE (°C)
0
25
50
75
TEMPERATURE (°C)
OUTPUT VOLTAGE
vs. TRIM VOLTAGE (VOUT = 2.5V)
OUTPUT VOLTAGE
vs. TRIM VOLTAGE (VOUT = 4.096V)
0
25
50
75
100
125
MAX6173 toc20
-25
2.60
2.55
2.50
2.45
-25
100
toc20b
1.0
1.5
2.0
4.3
LONG-TERM STABILITY
vs. TIME (VOUT = 4.096V)
4.098
TWO TYPICAL PARTS
toc21b
4.1
4
3.9
3.8
1
2
TRIM VOLTAGE (V)
3
4
TWO TYPICAL PARTS
10.001
VOUT (V)
VOUT (V)
10.000
4.096
9.999
0
200
400
600
TIME (hours)
www.maximintegrated.com
800
1000
9.998
75
100
125
TWO TYPICAL PARTS
0
0
200
400
600
TIME (hours)
800
1000
200
400
600
800
1000
TIME (hours)
LONG-TERM STABILITY vs. TIME
(VOUT = 10.0V)
4.097
4.0955
50
2.500
2.498
0
4.0975
4.0965
25
2.499
3.7
10.002
COUT = 0
0
2.501
4.2
3.5
2.5
-25
LONG-TERM STABILITY vs. TIME
(VOUT = 2.500V)
2.502
OUTPUT VOLTAGE-NOISE DENSITY (nV/√Hz)
0.5
-50
4.4
TRIM VOLTAGE (V)
4.095
400
125
3.6
0
600
TEMPERATURE (°C)
4.5
2.40
2.35
-50
VOUT (V)
-50
700
500
500
2.65
OUTPUT VOLTAGE (V)
700
MAX6173 toc22
400
800
800
MAX6173 toc21
500
900
OUTPUT-VOLTAGE NOISE DENSITY
vs. FREQUENCY (VOUT = 2.5V)
1000
100
MAX6173 toc23
TEMP VOLTAGE (mV)
600
TEMP VOLTAGE
vs. TEMPERATURE (VOUT = 10V)
COUT = 0
TEMP VOLTAGE (mV)
MAX6173 toc18
700
toc18b
900
OUTPUT VOLTAGE CHANGE (V)
TEMP VOLTAGE (mV)
800
TEMP VOLTAGE
vs. TEMPERATURE (VOUT = 4.096V)
MAX6173 toc19
TEMP VOLTAGE
vs. TEMPERATURE (VOUT = 2.5V)
0.1
1
10
100
FREQUENCY (Hz)
1000
Maxim Integrated │ 11
MAX6173–MAX6177
High-Precision Voltage References with
Temperature Sensor
Typical Operating Characteristics (continued)
(VIN = +5V for VOUT = +2.5V, VIN = +15V for VOUT = 4.096V and VOUT = +10V, IOUT = 0, TA = +25°C, unless otherwise noted.)
1000
100
10
0.1
1
10
100
1000
1000
100
10
1
10000 100000
0.1
1
FREQUENCY (Hz)
100
1000
10000 100000
0.1Hz to 10Hz OUTPUT VOLTAGE NOISE
(VOUT = 4.096V, COUT = 0)
toc24b
6
4
2
0
-2
-4
-6
10,000
1000
100
0.1
1
FREQUENCY (Hz)
OUTPUT VOLTAGE NOISE (μVP-P)
OUTPUT VOLTAGE NOISE (μVP-P)
6
10
OUTPUT-VOLTAGE NOISE DENSITY
vs. FREQUENCY (VOUT = 10V)
MAX6173 toc24
COUT = 1µF
OUTPUT VOLTAGE-NOISE DENSITY (nV/√Hz)
COUT = 0
OUTPUT VOLTAGE-NOISE DENSITY
vs. FREQUENCY (VOUT = 4.096V) toc23c
INPUT VOLTAGE-NOISE DENSITY (nV/√Hz)
INPUT VOLTAGE-NOISE DENSITY (nV/√Hz)
OUTPUT VOLTAGE-NOISE DENSITY
vs. FREQUENCY (VOUT = 4.096V) toc23b
0.1Hz TO 10Hz OUTPUT NOISE
(VOUT = 2.5V)
0.1Hz to 10Hz OUTPUT VOLTAGE NOISE
(VOUT = 4.096V, COUT = 1µF) toc24c
2
0
-2
-4
4s/div
0.1Hz TO 10Hz OUTPUT NOISE
(VOUT = 10V)
MAX6173 toc25
MAX6173 toc26
1µV/div
1s/div
www.maximintegrated.com
1000
4
-6
4s/div
10
100
FREQUENCY (Hz)
4µV/div
1s/div
Maxim Integrated │ 12
MAX6173–MAX6177
High-Precision Voltage References with
Temperature Sensor
Typical Operating Characteristics (continued)
(VIN = +5V for VOUT = +2.5V, VIN = +15V for VOUT = 4.096V and VOUT = +10V, IOUT = 0, TA = +25°C, unless otherwise noted.)
LOAD TRANSIENT
(VOUT = 2.5V, COUT = 1µF, 0 TO +20mA)
LOAD TRANSIENT
(VOUT = 2.5V, COUT = 0, 0 TO 20mA)
MAX6173 toc28
MAX6173 toc27
20mA
20mA
IOUT
IOUT
0
0
VOUT
AC-COUPLED
50mV/div
VOUT
AC-COUPLED
1V/div
200µs/div
10µs/div
LOAD TRANSIENT
(VOUT = 4.096V, COUT = 0, 0 TO 20mA)
LOAD TRANSIENT
(VOUT = 4.096V, COUT = 1μF, 0 TO 20mA)
toc28b
toc28c
20mA
20mA
IOUT
10mA/div
0
IOUT
10mA/div
0
ACCOUPLED
1V/div
VOUT
10μs/div
ACCOUPLED
10mV/div
VOUT
100μs/div
LOAD TRANSIENT
(VOUT = 10V, COUT = 1µF, 0 TO 20mA)
LOAD TRANSIENT
(VOUT = 10V, COUT = 0, 0 TO 20mA)
MAX6173 toc30
MAX6173 toc29
20mA
IOUT
20mA
0
IOUT
0
VOUT
AC-COUPLED
100mV/div
VOUT
AC-COUPLED
1V/div
10µs/div
www.maximintegrated.com
100µs/div
Maxim Integrated │ 13
MAX6173–MAX6177
High-Precision Voltage References with
Temperature Sensor
Typical Operating Characteristics (continued)
(VIN = +5V for VOUT = +2.5V, VIN = +15V for VOUT = 4.096V and VOUT = +10V, IOUT = 0, TA = +25°C, unless otherwise noted.)
LOAD TRANSIENT
(VOUT = 2.5V, COUT = 0, 0 TO -2mA)
LOAD TRANSIENT
(VOUT = 4.096V, COUT = 0, ISINK = 0 TO -2mA)
MAX6173 toc31
toc31b
0
IOUT
0
ISINK
-2mA
VOUT
AC-COUPLED
200mV/div
-2mA
VOUT
ACCOUPLED
200mV/div
40µs/div
100μs/div
LOAD TRANSIENT
(VOUT = 10V, COUT = 0, 0 TO -2mA)
LOAD TRANSIENT
(VOUT = 2.5V, COUT = 1µF, 0 TO -2mA)
MAX6173 toc32
MAX6173 toc33
0
0
IOUT
IOUT
-2mA
-2mA
VOUT
AC-COUPLED
20mV/div
VOUT
AC-COUPLED
20mV/div
200µs/div
400µs/div
LOAD TRANSIENT
(VOUT = 4.096V, COUT = 1μF, ISINK = 0 TO -2mA)
LOAD TRANSIENT
(VOUT = 10V, COUT = 1µF, 0 TO -2mA)
toc33b
MAX6173 toc34
0
0
IOUT
ISINK
-2mA
-2mA
VOUT
ACCOUPLED
50mV/div
100μs/div
www.maximintegrated.com
VOUT
AC-COUPLED
5mV/div
400µs/div
Maxim Integrated │ 14
MAX6173–MAX6177
High-Precision Voltage References with
Temperature Sensor
Typical Operating Characteristics (continued)
(VIN = +5V for VOUT = +2.5V, VIN = +15V for VOUT = 4.096V and VOUT = +10V, IOUT = 0, TA = +25°C, unless otherwise noted.)
LINE TRANSIENT
(VOUT = 4.096V, COUT = 0)
LINE TRANSIENT
(VOUT = 4.096V, COUT = 1µF
toc34b
VIN
VOUT
0.5V/div
ACCOUPLED
(14.5V TO
15.5V)
VIN
ACCOUPLED
50mV/div
VOUT
100μs/div
toc34c
0.5V/div
ACCOUPLED
(14.5V TO
15.5V)
ACCOUPLED
20mV/div
200μs/div
LINE TRANSIENT
(VOUT = 2.5V)
MAX6173 toc35
LINE TRANSIENT
(VOUT = 10V)
5.5V
MAX6173 toc36
4.5V
15.5V
VIN
1V/div
14.5V
VOUT
AC-COUPLED
200mV/div
VOUT
AC-COUPLED
200mV/div
VIN
COUT = 0
10µs/div
2µs/div
TURN-ON TRANSIENT
(VOUT = 2.5V, COUT = 0)
TURN-ON TRANSIENT
(VOUT = 2.5V, COUT = 1µF)
MAX6173 toc37
MAX6173 toc38
VIN
2V/div
VIN
2V/div
GND
GND
VOUT
1V/div
VOUT
1V/div
GND
GND
10µs/div
www.maximintegrated.com
40µs/div
Maxim Integrated │ 15
MAX6173–MAX6177
High-Precision Voltage References with
Temperature Sensor
Typical Operating Characteristics (continued)
(VIN = +5V for VOUT = +2.5V, VIN = +15V for VOUT = 4.096V and VOUT = +10V, IOUT = 0, TA = +25°C, unless otherwise noted.)
TURN-ON TRANSIENT
TURN-ON TRANSIENT
(VOUT = 4.096V, COUT = 0)
(VOUT = 4.096V, COUT = 1µF)
toc38b
10V/div
VIN
VOUT
2V/div
200μs/div
VIN
10V/div
VOUTP
2V/div
100µs/div
TURN-ON TRANSIENT
(VOUT = 10V, COUT = 1µF)
TURN-ON TRANSIENT
(VOUT = 10V, COUT = 0)
MAX6173 toc40
MAX6173 toc39
VIN
5V/div
VIN
5V/div
100µs/div
www.maximintegrated.com
toc38c
GND
GND
VOUT
5V/div
VOUT
5V/div
GND
GND
200µs/div
Maxim Integrated │ 16
MAX6173–MAX6177
High-Precision Voltage References with
Temperature Sensor
Pin Description
PIN
NAME
1, 8
I.C.
Internally Connected. Do not connect externally.
FUNCTION
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.
Detailed Description
The MAX6173–MAX6177 precision voltage references
provide accurate preset +2.5V, +3.3V, +4.096V, +5.0V,
and +10V reference voltages from up to +40V input voltages. These devices feature a proprietary temperaturecoefficient 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 MAX6173–MAX6177 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 MAX6173–
MAX6177 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:
where:
∆VOUT = 2 x (VTRIM - VTRIM (open)) x k
VTRIM = 0V to VOUT
VTRIM (open) = VOUT (nominal)/2 (typ)
k = ±6% (typ)
www.maximintegrated.com
For example, use a 50kΩ potentiometer (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 1MΩ or
less. Currents through resistors R1 and R2 add to the
quiescent supply current.
Temp Output
The MAX6173–MAX6177 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
V TEMP (at TJ = T0 )
≅ 1.9mV / °K
T0
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.
Maxim Integrated │ 17
MAX6173–MAX6177
High-Precision Voltage References with
Temperature Sensor
Applications Information
Turn-On Time
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 MAX6173–MAX6177 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 (undershoot) and improves
the circuit’s transient response. Place output capacitors
as close to the devices as possible for best performance.
Supply Current
The MAX6173–MAX6177 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 thermal hysteresis value
is 120ppm.
The MAX6173–MAX6177 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 MAX6173–MAX6177 feature a short-circuit-protected
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 circuiting the output
to the input.
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 resolution limit
through the operating temperature range. Figure 1 shows
the maximum allowable reference-voltage 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 reference-voltage temperature coefficient as the only parameter affecting accuracy.
In reality, the absolute static accuracy of a data converter
is dependent on the combination of many parameters
such as integral nonlinearity, differential nonlinearity, offset error, gain error, as well as voltage-reference changes.
10,000
1000
100
TEMPERATURE
COEFFICIENT
(ppm/°C)
8-BIT
10
10-BIT
12-BIT
1
14-BIT
16-BIT
0.1
18-BIT
0.01
1
10
OPERATING TEMPERATURE RANGE (TMAX - TMIN) (°C)
20-BIT
100
Figure 1. Temperature Coefficient vs. Operating Temperature Range for a 1 LSB Maximum Error
www.maximintegrated.com
Maxim Integrated │ 18
MAX6173–MAX6177
High-Precision Voltage References with
Temperature Sensor
Pin Configuration
( VOUT + 2V) TO 40V INPUT
TOP VIEW
IN
OUT
*
REFERENCE
OUTPUT
I.C.*
1
IN
2
TEMP
3
+
MAX6173–
MAX6177
GND 4
MAX6173–MAX6177
8
I.C.*
7
N.C.
6
OUT
5
TRIM
SO
TEMP
TRIM
*INTERNALLY CONNECTED. DO NOT CONNECT.
MAX5436
50kΩ
POTENTIOMETER
GND
Chip Information
PROCESS: BiCMOS
*OPTIONAL.
Package Information
Figure 2. Applications Circuit Using the MAX5436 Potentiometer
For the latest package outline information and land patterns
(footprints), go to www.maximintegrated.com/packages. Note
that a “+”, “#”, or “-” in the package code indicates RoHS status
only. Package drawings may show a different suffix character, but
the drawing pertains to the package regardless of RoHS status.
PACKAGE
TYPE
PACKAGE
CODE
OUTLINE
NO.
LAND PATTERN
NO.
8 SO
S8+4
21-0041
90-0096
8 SO
S8+22
21-0041
90-0096
Ordering Information/Selector Guide
PINPACKAGE
MAX6173AASA+
-40°C to +125°C
8 SO
MAX6173BASA+
-40°C to +125°C
8 SO
MAX6173BASA/V+T -40°C to +125°C
8 SO
MAX6174AASA+
-40°C to +125°C
8 SO
MAX6174BASA+
-40°C to +125°C
8 SO
MAX6174BASA/V+
-40°C to +125°C
8 SO
MAX6174BASA/V+T -40°C to +125°C
8 SO
MAX6175AASA+
-40°C to +125°C
8 SO
MAX6175BASA+
-40°C to +125°C
8 SO
MAX6175BASA/V+
-40°C to +125°C
8 SO
MAX6176AASA+
-40°C to +125°C
8 SO
MAX6176BASA+
-40°C to +125°C
8 SO
MAX6177AASA+
-40°C to +125°C
8 SO
MAX6177BASA+
-40°C to +125°C
8 SO
+Denotes a lead(Pb)-free/RoHS-compliant package.
/V denotes an automotive qualified part
PART
TEMP RANGE
www.maximintegrated.com
OUTPUT
VOLTAGE (V)
2.500
2.500
2.500
4.096
4.096
4.096
4.096
5.000
5.000
5.000
10.000
10.000
3.300
3.300
TEMPERATURE COEFFICIENT
(ppm/°C) -40°C TO +125°C
3
10
3
3
10
10
10
3
10
10
3
10
3
10
INITIAL
ACCURACY (%)
0.06
0.10
0.06
0.06
0.10
0.10
0.10
0.06
0.10
0.10
0.05
0.10
0.06
0.10
Maxim Integrated │ 19
MAX6173–MAX6177
High-Precision Voltage References with
Temperature Sensor
Revision History
REVISION
NUMBER
REVISION
DATE
PAGES
CHANGED
0
6/04
Initial release
1
2/11
Added automotive grade part, lead-free information, and soldering
temperature
1, 2
2
3/14
Updated package code in Package Information
14
3
6/14
Updated Ordering Information, Electrical Characteristics, and Typical
Operating Characteristics
4
9/14
Updated Typical Operating Characteristics
7–14
5
9/14
Updated Typical Operating Characteristics
7–15
6
12/17
Added AEC statement to Benefits and Features section
1
7
3/18
Updated Ordering Informaiton table
18
8
3/18
Updated Absolute Maximum Ratings section and Electrical Characteristics table
2–6
9
3/18
Updated Absolute Maximum Ratings section
10
10/18
Update Applications, Package Thermal Characteristics, Package Information,
and Ordering Information/Selector Guide
11
4/19
Updated General Description section
DESCRIPTION
—
1, 4, 5, 8
2
1, 2, 18
1
For pricing, delivery, and ordering information, please visit Maxim Integrated’s online storefront at https://www.maximintegrated.com/en/storefront/storefront.html.
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses
are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits)
shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.
© 2019 Maxim Integrated Products, Inc. │ 20
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