19-2639; Rev 2; 7/04
+10V Precision Voltage Reference
General Description
The MAX674 is a precision voltage reference that is
pretrimmed to within ±0.15% of 10V. 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.
♦
Pretrimmed to +10V, ±0.15%
♦
Excellent Temperature Stability: 12ppm/°C
♦
Low Noise: 20µV
P-P
♦
Low Supply Current: 1.4mA (max)
♦
Short-Circuit Protected
♦
Load Regulation 0.001%/mA
♦
Pin-for-Pin Compatible with REF01
Features
MAX674
Applications
A/D Converters
D/A Converters
Digital Voltmeters
Voltage Regulators
Threshold Detectors
MAX674CPA
MAX674CSA
MAX674EPA
MAX674ESA
PART
Ordering Information
INITIAL
PIN-
TEMPCO
ERROR
TEMP RANGE
PACKAGE (ppm/°C)
(mV)
0°C to +70°C
0°C to +70°C
8 PDIP
8 Narrow
SO
12
12
15
15
15
15
15
15
-40°C to +85°C 8 PDIP
-40°C to +85°C
8 Narrow
SO
Ordering Information continued at end of data sheet.
Pin Configurations
Typical Operating Circuit
15V
TOP VIEW
2
V
IN
V
OUT
N.C.
V
IN
N.C.
1
2
8
7
N.C.
N.C.
6
OUTPUT
MAX674
3
6
5
V
OUT
TRIM
MAX674
TRIM
GND
4
5
R
P
10kΩ
GND 4
SO/DIP
Pin Configurations continued at end of data sheet.
REFERENCE WITH TRIMMED OUTPUT
________________________________________________________________
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.
+10V Precision Voltage Reference
MAX674
ABSOLUTE MAXIMUM RATINGS
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
MAX674C ............................................................0°C to +70°C
MAX674E .........................................................-40°C to +85°C
MAX674M ......................................................-55°C to +125°C
Dice Junction Temperature (T
J
) ........................-65°C to +150°C
Output Short-Circuit Duration
(to Ground or V
IN
)......................................................Indefinite
Lead Temperature (soldering, 60s) .................................+300°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
(V
IN
= +15V, T
A
= +25°C, unless otherwise noted.)
PARAMETER
Output Voltage Tolerance
Output Voltage Temperature
Coefficient (Note 1)
Output Adjustment Range
Line Regulation (Note 2)
Load Regulation (Note 2)
Turn-On Settling Time
Quiescent Supply Current
Noise (Note 3)
Sink Current
Short-Circuit Current
t
ON
I
Q
e
N(P-P)
I
S
I
SC
V
OUT
= 0V
TCV
O
V
TRIM
SYMBOL
I
L
= 0mA
MAX674CTV/CPA/CSA
MAX674ETV/EJA/EPA/ESA
MAX674MTV/MJA
Rp = 10
V
IN
= 13V to 33V
I
L
= 0 to 10mA
To ±0.1% of final value
No load
0.1Hz to 10Hz
0.3
±300
±600
0.006
0.001
5
750
20
0.5
30
1400
30
0.01
0.002
CONDITIONS
MIN
TYP
MAX
±15
12
15
20
mV
%/V
%/mA
µs
µA
µV
P-P
mA
mA
ppm/°C
UNITS
mV
Note 1:
Temperature coefficient is measured by the “box” method, i.e., the maximum
∆V
OUT
is divided by
∆T.
Note 2:
Line and load regulation specifications include the effect of self-heating.
Note 3:
Guaranteed by design for MAX674CPA, MAX674CSA, MAX674EPA, MAX674ESA; sample tested for all other grades and
packages.
2
_______________________________________________________________________________________
+10V Precision Voltage Reference
MAX674
Output Adjustment
The MAX674 trim terminal can be used to adjust the
output voltage over a 10V ±300mV range. This feature
allows system errors to be trimmed by setting the refer-
ence to a voltage other than 10V such as 10.240V for
binary applications (see the
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
100mV of output adjustment from its initial value.
Typical Operating Characteristics
(T
A
= +25°C, unless otherwise noted.)
LINE REGULATION
vs. FREQUENCY
MAX674 toc01
MAX674 OUTPUT WIDEBAND
NOISE vs. BANDWIDTH (0.1Hz
TO FREQUENCY INDICATED)
MAX674 toc02
MAXIMUM LOAD CURRENT
vs. INPUT VOLTAGE
SHORT-CIRCUIT PROTECTION
MAX674 toc03
76
66
LINE REGULATION (dB)
56
46
36
26
16
6
10
100
1k
10k
100k
V
IN
= 15V
T
A
= +25°C
10,000
V
IN
= 15V
T
A
= +25°C
OUTPUT NOISE (µV
P-P
)
35
MAXIMUM LOAD CURRENT (mA)
30
25
20
15
10
5
1000
500mW MAXIMUM
DISSIPATION
100
T
A
= +25°C
10
1M
10
100
1k
10k
100k
1M
FREQUENCY (Hz)
FREQUENCY (Hz)
0
10
15
20
INPUT VOLTAGE (V)
25
30
MAXIMUM LOAD CURRENT
vs. TEMPERATURE
MAX674 toc04
OUTPUT CHANGE DUE TO
THERMAL SHOCK
PERCENT CHANGE IN OUTPUT VOLTAGE (%)
V
IN
= 15V
0.030
0.025
0.020
0.015
0.010
0.005
0
DEVICE IMMERSED
IN +75°C OIL BATH
-10
0
10
20
30
40
50
60
T
A
= T
A
=
+25°C +75°C
MAX674 toc05
30
V
IN
= 15V
MAXIMUM LOAD CURRENT (mA)
25
20
15
10
5
0
-60 -40 -20 0
0.035
20 40 60 80 100 120 140
TEMPERATURE (°C)
TIME (s)
_______________________________________________________________________________________
3
+10V Precision Voltage Reference
MAX674
Typical Applications
1.1mA
2
V
IN
V
OUT
6
+
15V
2
V
IN
V
OUT
6
+10V
10kΩ
MAX674
9V
TRIM
GND
4
9V
-
5
100kΩ
10.000V
MAX674
TRIM
GND
4
5
10kΩ
+15V
-10V
-15V
MAX400
Figure 3. ±10V Reference
Figure 2. Precision Calibration Standard
15V
2
V
IN
V
OUT
6
MAX674
TRIM
GND
4
I
OUT
VOLTAGE COMPLIANCE 25V TO +110V
5
I
OUT
=
R
10.0V
+ 1mA
R
Figure 4. Current Source
4
_______________________________________________________________________________________
+10V Precision Voltage Reference
Pin Configurations (continued)
TOP VIEW
N.C.
N.C.
8
1
7
N.C.
Chip Topography
V
IN
2
6
V
OUT
MAX674
V
IN
2
MAX674
3
4
GROUND
(CASE)
5
6 V
OUT
0.57”
1.45mm
TRIM
N.C.
5
TO-99 METAL CAN
4
0.78”
1.98mm
GND
TRIM
N.C.
V
IN
N.C.
1
2
8
7
N.C.
N.C.
V
OUT
TRIM
MAX674
3
6
5
GND 4
Ordering Information (continued)
PART
MAX674CTV*
MAX674ETV*
MAX674EJA*
INITIAL
PIN-
TEMPCO
ERROR
TEMP RANGE
PACKAGE (ppm/°C)
(mV)
0°C to +70°C
8 TO-99
12
15
15
20
20
15
15
15
15
15
CERDIP
-40°C to +85°C 8 TO-99
-40°C to +85°C 8 CERDIP
MAX674MTV* -55°C to +125°C 8 TO-99
MAX674MJA* -55°C to +125°C 8 CERDIP
*Contact
factory for availability. Not recommended for new
designs.
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.
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