General Description
The MAX675 is a precision voltage reference that is
pretrimmed to within ±0.15% of 5V. The reference fea-
tures excellent temperature stability (as low as
12.0ppm/°C guaranteed), low current drain and low
noise. It is supplied in the space-saving narrow SO
package, as well as, the standard 8-pin Plastic DIP
package.
Applications
A/D Converters
D/A Converters
Digital Voltmeters
Voltage Regulators
Threshold Detectors
Features
♦Pretrimmed to +5V, ±0.15%
♦Excellent Temperature Stability: 12ppm/°C
♦Low Noise: 10µVP-P
♦Low Supply Current: 1.4mA (max)
♦Short-Circuit Protected
♦Load Regulation 0.001%/mA
♦Pin-for-Pin Compatible with REF02
MAX675
+5V Precision Voltage Reference
________________________________________________________________ Maxim Integrated Products 1
REFERENCE WITH TRIMMED OUTPUT
MAX675
15V
6
5
VOUT
TRIM
VIN
GND
RP
10kΩ
OUTPUT
2
4
3TEMP
Pin Configurations
Ordering Information
VOUT
TRIMGND
1
2
8
7
N.C.
N.C.VIN
TEMP
N.C.
SO/DIP
3
4
6
5
MAX675
TOP VIEW
Typical Operating Circuit
19-2561; Rev 2; 7/04
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.
PART
TEMP RANGE
PIN-
PACKAGE
TEMPCO
(ppm/°C)
INITIAL
ERROR
(mV)
MAX675CPA
0°C to +70°C
8 PDIP 12 7
MAX675CSA
0°C to +70°C
8 Narrow
SO 12 7
MAX675EPA
-40°C to +85°C
8 PDIP 15 7
MAX675ESA
-40°C to +85°C
8 Narrow
SO 15 7
Pin Configurations continued at end of data sheet.
Ordering Information continued at end of data sheet.
MAX675
+5V Precision Voltage Reference
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VIN = +15V, TA= +25°C, unless otherwise noted.)
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.
Note 1: Temperature Coefficient is measured by the “box” method, i.e., the maximum ∆VOUT is divided by ∆T.
Note 2: Line and Load Regulation specifications include the effect of self-heating.
Note 3: Guaranteed by design for MAX675CPA, MAX675CSA, MAX675EPA, MAX675ESA; sample tested for all other grades and
packages.
Note 4: Limit current in or out of pin 3 to 50nA and capacitance on pin 3 to 30pF.
Input Voltage .........................................................................40V
Power Dissipation
TO-99 (TV) (derate at 7.1mW/ C above +80°C)...........500mW
CERDIP (J) (derate at 6.7mW/ C above +75°C) ..........500mW
Plastic DIP (P) (derate at 5.6mW/ C above +36°C) .....500mW
Narrow SO (S) (derate at 5.0mW/ C above +55°C) .....300mW
Storage Temperature Range .............................-65°C to +150°C
Operating Temperature Range
MAX675C............................................................0°C to +70°C
MAX675E .........................................................-40°C to +85°C
MAX675M ......................................................-55°C to +125°C
Dice Junction Temperature (TJ) ........................-65°C to +150°C
Output Short-Circuit Duration
(to Ground or VIN)......................................................Indefinite
Lead Temperature (soldering, 60s) .................................+300°C
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Output Voltage Tolerance IL = 0mA ±7 mV
MAX675CTV/CPA/CSA 12
MAX675ETV/EJA/EPA/ESA 15
Output Voltage Temperature
Coefficient (Note 1) TCVO
MAX675MTV/MJA 20
ppm/°C
Output Adjustment Range VTRIM Rp = 10
±150 ±300
mV
Line Regulation (Note 2) VIN = 18V to 33V
0.006 0.01
%/V
Load Regulation (Note 2) IL = 0 to 10mA
0.001 0.002
%/mA
Turn-On Settling Time tON To ±0.1% of final value 5 µs
Quiescent Supply Current IQNo load
750 1400
µA
Noise (Note 3) eN(P-P) 0.1Hz to 10Hz 10 15
µVP-P
Sink Current IS0.3 0.5 mA
Short-Circuit Current ISC VOUT = 0V 30 mA
Current Temperature Voltage
Output VT(Note 4)
630
mV
MAX675
+5V Precision Voltage Reference
_______________________________________________________________________________________ 3
Output Adjustment
The MAX675 trim terminal can be used to adjust the out-
put voltage over a 5V ±150mV range. This feature allows
system errors to be trimmed by setting the reference to a
voltage other than 5V such as 5.120V for binary applica-
tions (see Typical Operating Circuit). The trim terminal
may, of course, be left open if no adjustment is needed.
Adjustment of the output does not significantly affect the
temperature performance of the device. The temperature
coefficient change is approximately 0.7ppm/°C for each
100mV of output adjustment from its initial value.
Temperature Voltage Output
The MAX675 provides a temperature-dependent output
voltage on the TEMP pin. This voltage is proportional to
the absolute temperature, and has a scale factor of
approximately 2.1mV/°C (Figure 2).
Output Voltage = 2.1(T + 273)mV
where T = Temperature in °C
LINE REGULATION
vs. FREQUENCY
MAX675 toc01
FREQUENCY (Hz)
LINE REGULATION (dB)
100k10k1k100
16
26
36
46
56
66
76
6
10 1M
VIN = 15V
TA = +25°C
MAX675 OUTPUT WIDEBAND
NOISE vs. BANDWIDTH (0.1Hz
TO FREQUENCY INDICATED)
MAX675 toc02
FREQUENCY (Hz)
OUTPUT NOISE (µVP-P)
100k10k1k100
100
1000
10,000
10
10 1M
MAXIMUM LOAD CURRENT
vs. INPUT VOLTAGE
MAX675 toc03
INPUT VOLTAGE (V)
MAXIMUM LOAD CURRENT (mA)
201510
5
10
15
20
25
30
35
0
525
SHORT-CIRCUIT PROTECTION
500mW MAXIMUM
DISSIPATION
TA = +25°C
Typical Operating Characteristics
(TA = +25°C, unless otherwise noted.)
TEMPERATURE (°C)
TEMP VOLTAGE OUTPUT (mV)
1008040 60-20 0 20-40
480
530
580
630
680
730
780
830
880
430
-60 120 140
Figure 2. MAX675 Temperature Voltage Output vs.
Temperature
MAX675
+5V Precision Voltage Reference
4 _______________________________________________________________________________________
MAXIMUM LOAD CURRENT
vs. TEMPERATURE
MAX675 toc04
TEMPERATURE (°C)
MAXIMUM LOAD CURRENT (mA)
120100806040200-20-40
5
10
15
20
25
30
0
-60 140
VIN = 15V
OUTPUT CHANGE DUE TO
THERMAL SHOCK
MAX675 toc05
TIME (s)
PERCENT CHANGE IN OUTPUT VOLTAGE (%)
50403020100
0.005
0.010
0.015
0.020
0.025
0.030
0.035
0
-10 60
DEVICE IMMERSED
IN +75°C OIL BATH
TA =
+25°C
TA =
+75°C
VIN = 15V
Typical Operating Characteristics (continued)
(TA = +25°C, unless otherwise noted.)
Typical Applications
MAX675
1.1mA
6
5
VOUT
TRIM
VIN
GND
100kΩ
+
-
2
4
9V
5.000V
3TEMP
Figure 3. Precision Calibration Standard
MAX675
15V
6
5
VIN
GND
10kΩ
+5V
-5V
2
4
10kΩ
+15V
-15V
MAX400
TEMP
6
4
2
3
5kΩ
VOUT
TRIM
3
Figure 4. ±5V Reference
MAX675
+5V Precision Voltage Reference
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 _____________________ 5
© 2004 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.
Chip Topography
MAX675
15V
6
5
VOUT
TRIM
VIN
GND
R
VOLTAGE COMPLIANCE -25V TO +8V
2
4
IOUT
IOUT = + 1mA
R
5.0V
3TEMP
Figure 5. Current Source
*
50kΩ
200kΩ
1.5kΩ
9.09kΩ
VREF
6
5
TRIM
TEMP
VOUT
VIN
1.5kΩ
±5%
4
*UP TO 10 FEET OF SHIELDED
4-CONDUCTOR CABLE.
GND
2
3
27
4
6
5.11kΩ
+15V
-15V
MAX675
-
+
MAX400
VOUT
(10mV/°C)
3
Figure 6. Precision Temperature Transducer with Remote
Sensor
GND
0.57”
1.45mm
0.78”
1.98mm
4
5TRIM
6VOUT
2
VIN
TEMP
3
Pin Configurations (continued)
VOUT
TRIMGND
1
2
8
7
N.C.
N.C.VIN
TEMP
N.C.
CERDIP
3
4
6
5
MAX675
TOP VIEW
VOUT
VIN
TRIM
N.C.
TEMP
N.C.
N.C.
GROUND
(CASE)
62
8
4
5
1 7
3
MAX675
TO-99 METAL CAN
Ordering Information
PART
TEMP RANGE
PIN-
PACKAGE
TEMPCO
(ppm/°C)
INITIAL
ERROR
(mV)
MAX675CTV*
0°C to +70°C
8 TO-99 12 7
MAX675ETV*
-40°C to +85°C
8 TO-99 15 7
MAX675EJA*
-40°C to +85°C 8 CERDIP
15 7
MAX675MTV*
-55°C to +125°C
8 TO-99 20 7
MAX675MJA*
-55°C to +125°C 8 CERDIP
20 7
*Contact factory for availability. Not recommended for new designs.
