MAX6176B [MAXIM]
High-Precision Voltage References with Temperature Sensor; 高精度电压基准，带有温度传感器
| 型号： | MAX6176B |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | High-Precision Voltage References with Temperature Sensor |
| 文件： | 总15页 (文件大小：420K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-3249; Rev 0; 5/04
High-Precision Voltage References with
Temperature Sensor
General Description
Features
+ 2V) to +40V Supply Voltage Range
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.
♦ Wide (V
OUT
♦ Excellent Temperature Stability: 3ppm/°C (max)
♦ Tight Initial Accuracy: 0.05% (max)
♦ Low Noise: 3.8µV
(typ at 2.5V Output)
P-P
♦ 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
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
space-critical applications.
♦ No External Capacitors Required for Stability
♦ Short-Circuit Protected
Typical Operating Circuit
(V
+ 2V) TO 40V INPUT
OUT
IN
REFERENCE
OUTPUT
OUT
*
*
*
The MAX6173–MAX6177 are available in an 8-pin SO
package and operate over the automotive (-40°C to
+125°C) temperature range.
MAX6173–MAX6177
TEMP
TRIM
GND
*OPTIONAL.
Applications
A/D Converters
D/A Converters
Digital Voltmeters
Voltage Regulators
Threshold Detectors
Pin Configuration appears at end of data sheet.
Ordering Information/Selector Guide
PIN-
PACKAGE
OUTPUT
VOLTAGE (V)
TEMPERATURE COEFFICIENT
(ppm/°C) -40°C TO +125°C
INITIAL
ACCURACY (%)
PART
TEMP RANGE
-40°C to +125°C
MAX6173AASA
MAX6173BASA
MAX6174AASA
MAX6174BASA
MAX6175AASA
MAX6175BASA
MAX6176AASA
MAX6176BASA
MAX6177AASA
MAX6177BASA
8 SO
8 SO
8 SO
8 SO
8 SO
8 SO
8 SO
8 SO
8 SO
8 SO
2.500
2.500
4.096
4.096
5.000
5.000
10.000
10.000
3.300
3.300
3
10
3
0.06
0.10
0.06
0.10
0.06
0.10
0.05
0.10
0.06
0.10
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
10
3
10
3
10
3
10
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
High-Precision Voltage References with
Temperature Sensor
ABSOLUTE MAXIMUM RATINGS
IN to GND...............................................................-0.3V to +42V
Operating Temperature Range ........................-40°C to +125°C
OUT, TRIM, TEMP to GND...........................-0.3V to (V + 0.3V)
Output Short Circuit to GND.....................................................5s
Junction Temperature .....................................................+150°C
Storage Temperature Range ............................-65°C to +150°C
Lead Temperature (soldering, 10s) ................................+300°C
IN
Continuous Power Dissipation (T = +70°C)
A
8-Pin SO (derate 5.9mW/°C above +70°C) ..................471mW
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—MAX6173 (V
= 2.5V)
A
OUT
(V = +5V, T = -40°C to +125°C, unless otherwise noted. Typical values are at T = +25°C.) (Note 1)
IN
A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
OUTPUT
MAX6173A (0.06%)
MAX6173B (0.1%)
2.4985
2.4975
3
2.5
2.5
6
2.5015
2.5025
Output Voltage
V
No load, T = +25°C
V
OUT
A
Output Adjustment Range
∆V
R = 10kΩ
POT
%
TRIM
Output-Voltage
Temperature Coefficient
(Note 2)
MAX6173AASA
MAX6173BASA
1.5
3
3
TCV
T = -40°C to +125°C
A
ppm/°C
OUT
10
T
T
= +25°C
0.6
0.8
2
5
A
Line Regulation (Note 3)
∆V
/ ∆V
4.5V ≤ V ≤ 40V
ppm/V
OUT
IN
IN
= -40°C to +125°C
= +25°C
10
A
T
T
T
T
10
A
A
A
A
Sourcing:
0 ≤ I
≤ 10mA
OUT
= -40°C to +125°C
= +25°C
2
15
∆V
/
OUT
Load Regulation (Note 3)
ppm/mA
∆I
OUT
50
90
60
3
500
900
Sinking:
-0.6mA ≤ I
≤ 0
OUT
= -40°C to +125°C
OUT shorted to GND
OUT shorted to IN
Output Short-Circuit
Current
I
mA
ppm
ppm
SC
Temperature Hysteresis
(Note 4)
∆V
/
OUT
cycle
120
50
∆V
/
OUT
time
Long-Term Stability
DYNAMIC
1000 hours at T = +25°C
A
f = 0.1Hz to 10Hz
f = 10Hz to 1kHz
3.8
6.8
µV
P-P
Noise Voltage
e
OUT
µV
RMS
Turn-On Settling Time
INPUT
t
To V
= 0.1% of final value, C = 50pF
OUT
150
µs
R
OUT
Supply Voltage Range
V
Guaranteed by line regulation test
4.5
40.0
450
600
V
IN
T
A
T
A
= +25°C
300
Quiescent Supply Current
I
No load
µA
IN
= -40°C to +125°C
TEMP OUTPUT
TEMP Output Voltage
V
570
1.9
mV
TEMP
TEMP Temperature
Coefficient
TC
mV/°C
TEMP
2
_______________________________________________________________________________________
High-Precision Voltage References with
Temperature Sensor
ELECTRICAL CHARACTERISTICS—MAX6177 (V
= 3.3V)
OUT
(V = +10V, T = -40°C to +125°C, unless otherwise noted. Typical values are at T = +25°C.) (Note 1)
IN
A
A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
OUTPUT
MAX6177A (0.06%)
MAX6177B (0.1%)
3.2980
3.2967
3
3.3
3.3
6
3.3020
3.3033
Output Voltage
V
No load, T = +25°C
V
OUT
A
Output Adjustment Range
∆V
R = 10kΩ
POT
%
TRIM
MAX6177AASA
MAX6177BASA
1.5
3
3
Output-Voltage
Temperature Coefficient
(Note 2)
TCV
T = -40°C to +125°C
A
ppm/°C
OUT
10
T
T
= +25°C
0.6
0.8
2
5
A
∆V
∆V
/
/
OUT
Line Regulation (Note 3)
Load Regulation (Note 3)
Output Short-Circuit Current
5.3V ≤ V ≤ 40V
ppm/V
IN
IN
= -40°C to +125°C
= +25°C
10
A
T
T
T
T
10
A
A
A
A
Sourcing:
0 ≤ I
≤ 10mA
OUT
= -40°C to +125°C
= +25°C
2
15
∆V
∆I
ppm/
mA
OUT
OUT
50
90
60
3
500
900
Sinking:
-0.6mA ≤ I
≤ 0
OUT
= -40°C to +125°C
OUT shorted to GND
OUT shorted to IN
I
mA
ppm
ppm
SC
Temperature Hysteresis
(Note 4)
∆V
cycle
/
OUT
120
50
∆V
OUT
time
/
Long-Term Stability
DYNAMIC
1000 hours at T = +25°C
A
f = 0.1Hz to 10Hz
f = 10Hz to 1kHz
5
µV
P-P
Noise Voltage
e
OUT
9.3
180
µV
RMS
Turn-On Settling Time
INPUT
t
To V
= 0.1% of final value, C = 50pF
OUT
µs
R
OUT
Supply Voltage Range
V
Guaranteed by line regulation test
5.3
40.0
500
650
V
IN
T
A
A
= +25°C
320
Quiescent Supply Current
I
No load
µA
IN
T
= -40°C to +125°C
TEMP OUTPUT
TEMP Output Voltage
V
630
2.1
mV
TEMP
TEMP Temperature
Coefficient
TC
mV/°C
TEMP
_______________________________________________________________________________________
3
High-Precision Voltage References with
Temperature Sensor
ELECTRICAL CHARACTERISTICS—MAX6174 (V
= 4.096V)
OUT
(V = +10V, T = -40°C to +125°C, unless otherwise noted. Typical values are at T = +25°C.) (Note 1)
IN
A
A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
OUTPUT
MAX6174A (0.06%)
MAX6174B (0.1%)
4.0935
4.0919
3
4.096 4.0985
4.096 4.1001
6
Output Voltage
V
No load, T = +25°C
V
%
OUT
A
Output Adjustment Range
∆V
R
POT
= 10kΩ
TRIM
MAX6174AASA
MAX6174BASA
1.5
3
3
10
5
Output-Voltage Temperature
Coefficient (Note 2)
TCV
T
= -40°C to +125°C
ppm/°C
OUT
A
T
T
= +25°C
0.6
0.8
2
A
A
∆V
/
OUT
Line Regulation (Note 3)
Load Regulation (Note 3)
Output Short-Circuit Current
6.1V ≤ V ≤ 40V
ppm/V
IN
∆V
IN
= -40°C to +125°C
= +25°C
10
10
15
500
900
T
T
T
T
A
A
A
A
Sourcing:
0 ≤ I
≤ 10mA
OUT
= -40°C to +125°C
= +25°C
2
∆V
∆I
/
OUT
OUT
ppm/mA
50
90
60
3
Sinking:
-0.6mA ≤ I
≤ 0
OUT
= -40°C to +125°C
OUT shorted to GND
OUT shorted to IN
I
mA
SC
Temperature Hysteresis
(Note 4)
∆V
cycle
/
/
OUT
120
50
ppm
ppm
∆V
OUT
time
Long-Term Stability
DYNAMIC
1000 hours at T = +25°C
A
f = 0.1Hz to 10Hz
f = 10Hz to 1kHz
7
µV
P-P
Noise Voltage
e
OUT
11.5
200
µV
RMS
Turn-On Settling Time
INPUT
t
To V
= 0.1% of final value, C = 50pF
OUT
µs
R
OUT
Supply Voltage Range
V
Guaranteed by line regulation test
6.1
40.0
500
650
V
IN
T
A
T
A
= +25°C
320
Quiescent Supply Current
I
No load
µA
IN
= -40°C to +125°C
TEMP OUTPUT
TEMP Output Voltage
V
630
2.1
mV
TEMP
TEMP Temperature
Coefficient
TC
mV/°C
TEMP
4
_______________________________________________________________________________________
High-Precision Voltage References with
Temperature Sensor
ELECTRICAL CHARACTERISTICS—MAX6175 (V
= 5.0V)
OUT
(V = +15V, T = -40°C to +125°C, unless otherwise noted. Typical values are at T = +25°C.) (Note 1)
IN
A
A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
OUTPUT
MAX6175A (0.06%)
MAX6175B (0.1%)
4.9970
4.9950
3
5.0
5.0
6
5.0030
5.0050
Output Voltage
V
No load, T = +25°C
V
OUT
A
Output Adjustment Range
∆V
R
POT
= 10kΩ
%
TRIM
Output-Voltage
Temperature Coefficient
(Note 2)
MAX6175AASA
MAX6175BASA
1.5
3
3
TCV
T
A
= -40°C to +125°C
ppm/°C
OUT
10
T
T
T
T
T
T
= +25°C
0.6
0.8
2
5
A
A
A
A
A
A
∆V
∆V
/
/
OUT
Line Regulation (Note 3)
Load Regulation (Note 3)
Output Short-Circuit Current
7V ≤ V ≤ 40V
ppm/V
IN
IN
= -40°C to +125°C
= +25°C
10
10
Sourcing:
0 ≤ I
≤ 10mA
OUT
= -40°C to +125°C
= +25°C
2
15
∆V
∆I
OUT
ppm/mA
OUT
50
90
60
3
500
900
Sinking:
-0.6mA ≤ I
≤ 0
OUT
= -40°C to +125°C
OUT shorted to GND
OUT shorted to IN
I
mA
ppm
ppm
SC
Temperature Hysteresis
(Note 4)
∆V
cycle
/
OUT
120
50
∆V
OUT
time
/
Long-Term Stability
DYNAMIC
1000 hours at T = +25°C
A
f = 0.1Hz to 10Hz
f = 10Hz to 1kHz
9
µV
P-P
Noise Voltage
e
OUT
14.5
230
µV
RMS
Turn-On Settling Time
INPUT
t
To V
= 0.1% of final value, C = 50pF
OUT
µs
R
OUT
Supply Voltage Range
V
Guaranteed by line regulation test
7.0
40.0
550
700
V
IN
T
A
T
A
= +25°C
320
Quiescent Supply Current
I
No load
µA
IN
= -40°C to +125°C
TEMP OUTPUT
TEMP Output Voltage
V
630
2.1
mV
TEMP
TEMP Temperature
Coefficient
TC
mV/°C
TEMP
_______________________________________________________________________________________
5
High-Precision Voltage References with
Temperature Sensor
ELECTRICAL CHARACTERISTICS—MAX6176 (V
= 10V)
OUT
(V = +15V, T = -40°C to +125°C, unless otherwise noted. Typical values are at T = +25°C.) (Note 1)
IN
A
A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
OUTPUT
MAX6176A (0.05%)
MAX6176B (0.1%)
9.9950
9.9900
3
10.0 10.0050
10.0 10.0100
6
Output Voltage
V
No load, T = +25°C
V
OUT
A
Output Adjustment Range
∆V
R
POT
= 10kΩ
%
TRIM
Output-Voltage
Temperature Coefficient
(Note 2)
MAX6176AASA
MAX6176BASA
1.5
3
3
TCV
T
A
= -40°C to +125°C
ppm/°C
OUT
10
T
T
= +25°C
0.6
0.8
2
5
A
∆V
∆V
/
OUT
Line Regulation (Note 3)
12V ≤ V ≤ 40V
ppm/V
IN
IN
= -40°C to +125°C
= +25°C
10
A
T
T
T
T
10
A
A
A
A
Sourcing:
0 ≤ I
≤ 10mA
OUT
= -40°C to +125°C
= +25°C
= -40°C to +125°C
2
15
∆V
∆I
/
OUT
Load Regulation (Note 3)
ppm/mA
OUT
50
90
60
3
500
900
Sinking:
-0.6mA ≤ I
≤ 0
OUT
OUT shorted to GND
OUT shorted to IN
Output Short-Circuit
Current
I
mA
ppm
ppm
SC
Temperature Hysteresis
(Note 4)
∆V
cycle
/
/
OUT
120
50
∆V
OUT
time
Long-Term Stability
DYNAMIC
1000 hours at T = +25°C
A
f = 0.1Hz to 10Hz
f = 10Hz to 1kHz
18
29
µV
P-P
Noise Voltage
e
OUT
µV
RMS
Turn-On Settling Time
INPUT
t
To V
= 0.1% of final value, C = 50pF
OUT
400
µs
R
OUT
Supply Voltage Range
V
Guaranteed by line regulation test
12.0
40.0
550
700
V
IN
T
A
T
A
= +25°C
340
Quiescent Supply Current
I
No load
µA
IN
= -40°C to +125°C
TEMP OUTPUT
TEMP Output Voltage
V
630
2.1
mV
TEMP
TEMP Temperature
Coefficient
TC
mV/°C
TEMP
Note 1: All devices are 100% production tested at T = +25°C and guaranteed by design over T = T
to T
, as specified.
MAX
A
A
MIN
Note 2: Temperature coefficient is defined as ∆V
divided by the temperature range.
OUT
Note 3: Line and load regulation specifications do not include the effects of self-heating.
Note 4: Thermal hysteresis is defined as the change in +25°C output voltage before and after cycling the device from T
to T
.
MIN
MAX
6
_______________________________________________________________________________________
High-Precision Voltage References with
Temperature Sensor
Typical Operating Characteristics
(V = +5V for V
IN
= +2.5V, V = +15V for V
= +10V, I
= 0, T = +25°C, unless otherwise noted.)
OUT
IN
OUT
OUT A
OUTPUT VOLTAGE vs. TEMPERATURE
(V = 2.5V)
OUTPUT VOLTAGE vs. TEMPERATURE
(V = 10V)
LOAD REGULATION vs.
SOURCE CURRENT (V
= 2.5V)
OUT
OUT
OUT
2.502
2.501
2.500
2.499
2.498
10.003
10.002
10.001
10.000
9.999
9.998
9.997
9.996
9.995
9.994
9.993
0.50
0.25
0
T
= -40°C
A
T
= +25°C
A
-0.25
-0.50
T
= +125°C
A
THREE TYPICAL PARTS
THREE TYPICAL PARTS
-50 -25
0
25
50
75 100 125
-50 -25
0
25
50
75 100 125
0
5
10
15
20
25
30
TEMPERATURE (°C)
TEMPERATURE (°C)
SOURCE CURRENT (mA)
LOAD REGULATION
LOAD REGULATION
vs. SOURCE CURRENT (V
LOAD REGULATION
vs. SINK CURRENT (V
= 2.5V)
= 10V)
OUT
vs. SINK CURRENT (V
= 10V)
OUT
OUT
1.00
0.75
0.50
0.50
0.25
0
2.0
1.5
1.0
T
= +25°C
A
T
= -40°C
A
T
A
= +25°C
T
= +125°C
A
T
= +125°C
A
T
= +125°C
A
0.25
0
0.5
0
T
= +25°C
A
T
= -40°C
A
-0.25
-0.50
T
= -40°C
-0.25
A
-0.5
-0.50
-1.0
0
0.5
1.0
SINK CURRENT (mA)
1.5
2.0
0
5
10
15
20
25
30
0
0.5
1.0
1.5
2.0
SOURCE CURRENT (mA)
SINK CURRENT (mA)
MINIMUM INPUT-OUTPUT DIFFERENTIAL
vs. SOURCE CURRENT (V = 2.5V)
LINE REGULATION vs. TEMPERATURE
(V = 2.5V)
LINE REGULATION vs. TEMPERATURE
(V = 10V)
OUT
OUT
OUT
100
300
250
200
150
100
50
2.5
2.0
1.5
1.0
0.5
80
60
40
20
T
= +125°C
A
T
= -40°C
A
T
= +125°C
= +25°C
A
T
= -40°C
A
T
= +125°C
A
T
A
T
= -40°C
A
T
= +25°C
A
T
= +25°C
A
0
0
0
5
10 15 20 25 30 35 40
INPUT VOLTAGE (V)
12
16
20
24
28
32
36
40
0
4
8
12
16
20
INPUT VOLTAGE (V)
SOURCE CURRENT (mA)
_______________________________________________________________________________________
7
High-Precision Voltage References with
Temperature Sensor
Typical Operating Characteristics (continued)
(V = +5V for V
IN
= +2.5V, V = +15V for V
= +10V, I
= 0, T = +25°C, unless otherwise noted.)
OUT
IN
OUT
OUT A
MINIMUM INPUT-OUTPUT DIFFERENTIAL
POWER-SUPPLY REJECTION RATIO
POWER-SUPPLY REJECTION RATIO
vs. SOURCE CURRENT (V
= 10V)
vs. FREQUENCY (V
= 2.5V)
vs. FREQUENCY (V
= 10V)
OUT
OUT
OUT
2.5
2.0
1.5
1.0
0.5
0
0
-20
-40
-20
T
A
= +125°C
-40
-60
-60
T
A
= +25°C
= -40°C
-80
-80
-100
-120
-140
T
A
-100
-120
0
4
8
12
16
20
0.001 0.01
0.1
1
10
100 1000
0.001 0.01
0.1
1
10
100 1000
SOURCE CURRENT (mA)
FREQUENCY (kHz)
FREQUENCY (kHz)
OUTPUT IMPEDANCE vs. FREQUENCY
SUPPLY CURRENT vs. INPUT VOLTAGE
(V = 2.5V)
SUPPLY CURRENT vs. INPUT VOLTAGE
(V = 10V)
(V
OUT
= 2.5V)
OUT
OUT
400
350
300
250
200
150
100
50
400
350
300
250
200
150
100
50
100
10
T
= +125°C
T
= +125°C
A
A
T
= +25°C
A
1
T
= +25°C
A
T
= -40°C
A
0.1
T
= -40°C
A
0.01
0.001
0
0
0.01
0.1
1
10
100
1000
0
5
10 15 20 25 30 35 40
INPUT VOLTAGE (V)
0
5
10 15 20 25 30 35 40
INPUT VOLTAGE (V)
FREQUENCY (kHz)
SUPPLY CURRENT vs. TEMPERATURE
TEMP VOLTAGE
SUPPLY CURRENT vs. TEMPERATURE
(V
OUT
= 10V)
vs. TEMPERATURE (V
= 2.5V)
(V
OUT
= 2.5V)
OUT
375
350
325
300
275
250
800
700
600
500
400
350
325
300
275
250
-50 -25
0
25
50
75 100 125
-50 -25
0
25
50
75 100 125
-50 -25
0
25
50
75 100 125
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
8
_______________________________________________________________________________________
High-Precision Voltage References with
Temperature Sensor
Typical Operating Characteristics (continued)
(V = +5V for V
IN
= +2.5V, V = +15V for V
= +10V, I
= 0, T = +25°C, unless otherwise noted.)
OUT
IN
OUT
OUT A
TEMP VOLTAGE
vs. TEMPERATURE (V
OUTPUT VOLTAGE
vs. TRIM VOLTAGE (V
LONG-TERM STABILITY vs. TIME
(V = 2.500V)
= 10V)
= 2.5V)
OUT
OUT
OUT
900
800
700
600
500
400
2.65
2.502
2.501
2.500
2.499
2.498
TWO TYPICAL PARTS
2.60
2.55
2.50
2.45
2.40
2.35
-50 -25
0
25
50
75 100 125
0
0.5
1.0
1.5
2.0
2.5
0
200
400
600
800
1000
TEMPERATURE (°C)
TRIM VOLTAGE (V)
TIME (hours)
OUTPUT-VOLTAGE NOISE DENSITY
OUTPUT-VOLTAGE NOISE DENSITY
LONG-TERM STABILITY vs. TIME
vs. FREQUENCY (V = 10V)
vs. FREQUENCY (V
= 2.5V)
OUT
(V
OUT
= 10.0V)
OUT
10,000
1000
100
1000
10.002
10.001
10.000
9.999
TWO TYPICAL PARTS
100
9.998
0.1
1
10
FREQUENCY (Hz)
100
1000
0.1
1
10
FREQUENCY (Hz)
100
1000
0
200
400
600
800
1000
TIME (hours)
0.1Hz TO 10Hz OUTPUT NOISE
(V = 2.5V)
0.1Hz TO 10Hz OUTPUT NOISE
(V = 10V)
OUT
OUT
MAX6173 toc25
MAX6173 toc26
1µV/div
4µV/div
1s/div
1s/div
_______________________________________________________________________________________
9
High-Precision Voltage References with
Temperature Sensor
Typical Operating Characteristics (continued)
(V = +5V for V
IN
= +2.5V, V = +15V for V
= +10V, I = 0, T = +25°C, unless otherwise noted.)
OUT A
OUT
IN
OUT
LOAD TRANSIENT
LOAD TRANSIENT
= 2.5V, C = 0, 0 TO 20mA)
(V
OUT
= 10V, C
= 0, 0 TO 20mA)
OUT
MAX6173 toc28
(V
OUT
OUT
MAX6173 toc27
20mA
20mA
I
OUT
I
OUT
0
0
V
V
OUT
OUT
AC-COUPLED
1V/div
AC-COUPLED
1V/div
10µs/div
10µs/div
LOAD TRANSIENT
LOAD TRANSIENT
(V
OUT
= 2.5V, C
= 1µF, 0 TO +20mA)
(V
OUT
= 10V, C
= 1µF, 0 TO 20mA)
OUT
MAX6173 toc30
OUT
MAX6173 toc29
20mA
20mA
I
OUT
I
OUT
0
0
V
V
OUT
OUT
AC-COUPLED
50mV/div
AC-COUPLED
100mV/div
200µs/div
100µs/div
LOAD TRANSIENT
LOAD TRANSIENT
(V
OUT
= 2.5V, C
= 0, 0 TO -2mA)
(V
OUT
= 10V, C
= 0, 0 TO -2mA)
OUT
MAX6173 toc32
OUT
MAX6173 toc31
0
0
I
OUT
I
OUT
-2mA
-2mA
V
V
OUT
OUT
AC-COUPLED
200mV/div
AC-COUPLED
20mV/div
40µs/div
200µs/div
10 ______________________________________________________________________________________
High-Precision Voltage References with
Temperature Sensor
Typical Operating Characteristics (continued)
(V = +5V for V
IN
= +2.5V, V = +15V for V
= +10V, I
= 0, T = +25°C, unless otherwise noted.)
A
OUT
IN
OUT
OUT
LOAD TRANSIENT
= 2.5V, C = 1µF, 0 TO -2mA)
LOAD TRANSIENT
(V
OUT
(V
OUT
= 10V, C
= 1µF, 0 TO -2mA)
OUT
MAX6173 toc34
OUT
MAX6173 toc33
0
0
I
OUT
I
OUT
-2mA
-2mA
V
V
OUT
OUT
AC-COUPLED
20mV/div
AC-COUPLED
5mV/div
400µs/div
400µs/div
LINE TRANSIENT
LINE TRANSIENT
(V
= 2.5V)
(V
OUT
= 10V)
OUT
MAX6173 toc35
MAX6173 toc36
5.5V
15.5V
V
IN
V
IN
1V/div
14.5V
4.5V
V
V
OUT
OUT
AC-COUPLED
200mV/div
AC-COUPLED
200mV/div
C
= 0
OUT
10µs/div
2µs/div
TURN-ON TRANSIENT
TURN-ON TRANSIENT
= 2.5V, C = 1µF)
(V
OUT
= 2.5V, C
= 0)
OUT
MAX6173 toc37
(V
OUT
OUT
MAX6173 toc38
V
IN
2V/div
V
IN
2V/div
GND
GND
V
OUT
1V/div
V
OUT
1V/div
GND
C
= 0
OUT
GND
10µs/div
40µs/div
______________________________________________________________________________________ 11
High-Precision Voltage References with
Temperature Sensor
Typical Operating Characteristics (continued)
(V = +5V for V
IN
= +2.5V, V = +15V for V
IN
= +10V, I
= 0, T = +25°C, unless otherwise noted.)
OUT
OUT
OUT A
TURN-ON TRANSIENT
TURN-ON TRANSIENT
(V = 10V, C = 1µF)
OUT
(V
OUT
= 10V, C
= 0)
OUT
OUT
MAX6173 toc39
MAX6173 toc40
V
IN
V
5V/div
IN
5V/div
GND
GND
V
V
OUT
OUT
5V/div
5V/div
GND
GND
100µs/div
200µs/div
Pin Description
PIN
1, 8
2
NAME
I.C.
FUNCTION
Internally Connected. Do not connect externally.
Positive Power-Supply Input
IN
Temperature Proportional Output Voltage. TEMP generates an output voltage proportional to the die
temperature.
3
4
5
TEMP
GND
TRIM
Ground
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
7
OUT
N.C.
Output Voltage
No Connection. Not internally connected.
Use the following formula to calculate the change in
output voltage from its preset value:
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 volt-
ages. These devices feature a proprietary temperature-
coefficient curvature-correction circuit and laser-trimmed
thin-film resistors that result in a very low 3ppm/°C tem-
perature coefficient and excellent 0.05% initial accuracy.
The MAX6173–MAX6177 draw 340µA of supply current
and source 30mA or sink 2mA of load current.
∆V
= 2 x (V
- V
) x k
TRIM (open)
OUT
TRIM
where:
V
V
= 0V to V
TRIM
OUT
= V
(nominal) / 2 (typ)
TRIM (open)
OUT
k = 6% (typ)
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).
Trimming the Output Voltage
Trim the factory-preset output voltage on the
MAX6173–MAX6177 by placing a resistive divider net-
work between OUT, TRIM, and GND.
As the TRIM voltage changes from V
to GND, the
OUT
output voltage changes accordingly. Set R2 to 1MΩ or
less. Currents through resistors R1 and R2 add to the
quiescent supply current.
12 ______________________________________________________________________________________
High-Precision Voltage References with
Temperature Sensor
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.
Temp Output
The MAX6173–MAX6177 provide a temperature output
proportional to die temperature. TEMP can be calculated
from the following formula:
TEMP (V) = T (°K) x n
J
Supply Current
The MAX6173–MAX6177 consume 320µA (typ) of qui-
escent supply current. This improved efficiency
reduces power dissipation and extends battery life.
where T = the die temperature,
J
n = the temperature multiplier,
V
(at T = T )
J 0
TEMP
n =
≅1.9mV/°K
Thermal Hysteresis
T
0
Thermal hysteresis is the change in the output voltage
at T = +25°C before and after the device is cycled
A
T = the ambient temperature.
A
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.
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 T ≈ T .
J
A
Turn-On Time
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.
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.
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.
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
10,000
1000
100
8-BIT
TEMPERATURE
10
10-BIT
COEFFICIENT
(ppm/°C)
12-BIT
1
14-BIT
16-BIT
0.1
18-BIT
20-BIT
100
0.01
1
10
OPERATING TEMPERATURE RANGE (T
- T ) (°C)
MAX MIN
Figure 1. Temperature Coefficient vs. Operating Temperature Range for a 1 LSB Maximum Error
______________________________________________________________________________________ 13
High-Precision Voltage References with
Temperature Sensor
Temperature Coefficient vs. Operating
( V
OUT
+ 2V) TO 40V INPUT
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
IN
REFERENCE
OUTPUT
OUT
temperature range (T
- T
) with the converter
MIN
MAX
*
MAX6173–MAX6177
resolution as a parameter. The graph assumes the ref-
erence-voltage temperature coefficient as the only
parameter affecting accuracy.
MAX5436
50kΩ
POTENTIOMETER
TEMP
TRIM
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.
GND
*OPTIONAL.
Figure 2. Applications Circuit Using the MAX5436 Potrntiometer
Pin Configuration
Chip Information
TRANSISTOR COUNT: 429
PROCESS: BiCMOS
TOP VIEW
I.C.*
IN
1
2
3
4
8
7
6
5
I.C.*
N.C.
OUT
TRIM
MAX6173–
MAX6177
TEMP
GND
SO
*INTERNALLY CONNECTED. DO NOT CONNECT.
14 ______________________________________________________________________________________
High-Precision Voltage References with
Temperature Sensor
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.)
INCHES
MILLIMETERS
DIM
A
MIN
MAX
0.069
0.010
0.019
0.010
MIN
1.35
0.10
0.35
0.19
MAX
1.75
0.25
0.49
0.25
0.053
0.004
0.014
0.007
N
A1
B
C
e
0.050 BSC
1.27 BSC
E
0.150
0.228
0.016
0.157
0.244
0.050
3.80
5.80
0.40
4.00
6.20
1.27
E
H
H
L
VARIATIONS:
INCHES
1
MILLIMETERS
DIM
D
MIN
MAX
0.197
0.344
0.394
MIN
4.80
8.55
9.80
MAX
5.00
N
8
MS012
AA
TOP VIEW
0.189
0.337
0.386
D
8.75 14
10.00 16
AB
D
AC
D
C
A
B
0∞-8∞
e
A1
L
FRONT VIEW
SIDE VIEW
PROPRIETARY INFORMATION
TITLE:
PACKAGE OUTLINE, .150" SOIC
APPROVAL
DOCUMENT CONTROL NO.
REV.
1
21-0041
B
1
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.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 15
© 2004 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.
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