19-2639; Rev 2; 7/04 +10V Precision Voltage Reference The MAX674 is a precision voltage reference that is pretrimmed to within ±0.15% of 10V. The reference features 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. Features ♦ Pretrimmed to +10V, ±0.15% ♦ Excellent Temperature Stability: 12ppm/°C ♦ Low Noise: 20µVP-P ♦ Low Supply Current: 1.4mA (max) ♦ Short-Circuit Protected ♦ Load Regulation 0.001%/mA ♦ Pin-for-Pin Compatible with REF01 Ordering Information Applications A/D Converters D/A Converters PART TEMP RANGE Digital Voltmeters INITIAL PINTEMPCO ERROR PACKAGE (ppm/°C) (mV) Voltage Regulators MAX674CPA 0°C to +70°C 8 PDIP 12 15 Threshold Detectors MAX674CSA 0°C to +70°C 8 Narrow SO 12 15 15 15 15 15 MAX674EPA -40°C to +85°C 8 PDIP MAX674ESA -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 VIN VOUT N.C. 1 VIN 2 N.C. 8 N.C. 7 N.C. 3 6 VOUT GND 4 5 TRIM MAX674 6 OUTPUT MAX674 TRIM GND SO/DIP Pin Configurations continued at end of data sheet. 5 RP 10kΩ 4 REFERENCE WITH TRIMMED OUTPUT ________________________________________________________________ Maxim Integrated Products 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. 1 MAX674 General Description MAX674 +10V Precision Voltage Reference 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 (TJ) ........................-65°C to +150°C Output Short-Circuit Duration (to Ground or VIN)......................................................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 (VIN = +15V, TA = +25°C, unless otherwise noted.) PARAMETER SYMBOL Output Voltage Tolerance CONDITIONS MIN TYP IL = 0mA Output Voltage Temperature Coefficient (Note 1) TCVO Output Adjustment Range VTRIM MAX UNITS ±15 mV MAX674CTV/CPA/CSA 12 MAX674ETV/EJA/EPA/ESA 15 MAX674MTV/MJA Rp = 10 ppm/°C 20 ±300 ±600 mV Line Regulation (Note 2) VIN = 13V to 33V 0.006 0.01 %/V Load Regulation (Note 2) IL = 0 to 10mA 0.001 0.002 %/mA Turn-On Settling Time Quiescent Supply Current Noise (Note 3) Sink Current Short-Circuit Current tON IQ eN(P-P) To ±0.1% of final value µs No load 750 1400 µA 0.1Hz to 10Hz 20 30 µVP-P IS ISC 5 0.3 VOUT = 0V 0.5 mA 30 mA 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 MAX674CPA, MAX674CSA, MAX674EPA, MAX674ESA; sample tested for all other grades and packages. 2 _______________________________________________________________________________________ +10V Precision Voltage Reference 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 reference 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. Typical Operating Characteristics (TA = +25°C, unless otherwise noted.) MAX674 OUTPUT WIDEBAND NOISE vs. BANDWIDTH (0.1Hz TO FREQUENCY INDICATED) 46 36 26 1000 100 35 MAX674 toc03 VIN = 15V TA = +25°C OUTPUT NOISE (µVP-P) 56 SHORT-CIRCUIT PROTECTION 30 25 500mW MAXIMUM DISSIPATION 20 15 10 16 5 TA = +25°C 6 0 10 10k 100k 1M 10 100 1k 10k 100k 10 1M 15 MAXIMUM LOAD CURRENT vs. TEMPERATURE 30 VIN = 15V 25 20 25 30 INPUT VOLTAGE (V) FREQUENCY (Hz) OUTPUT CHANGE DUE TO THERMAL SHOCK 20 15 10 5 0 0.035 MAX674 toc05 1k FREQUENCY (Hz) PERCENT CHANGE IN OUTPUT VOLTAGE (%) 100 MAX674 toc04 10 MAXIMUM LOAD CURRENT (mA) LINE REGULATION (dB) 66 10,000 MAXIMUM LOAD CURRENT (mA) VIN = 15V TA = +25°C MAXIMUM LOAD CURRENT vs. INPUT VOLTAGE MAX674 toc02 76 MAX674 toc01 LINE REGULATION vs. FREQUENCY VIN = 15V 0.030 0.025 TA = TA = +25°C +75°C 0.020 0.015 0.010 DEVICE IMMERSED IN +75°C OIL BATH 0.005 0 -60 -40 -20 0 20 40 60 80 100 120 140 TEMPERATURE (°C) -10 0 10 20 30 40 50 60 TIME (s) _______________________________________________________________________________________ 3 MAX674 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. Output Adjustment +10V Precision Voltage Reference MAX674 Typical Applications 15V 1.1mA 2 2 VIN VIN VOUT 6 VOUT + 6 +10V 10kΩ MAX674 MAX674 TRIM 9V 5 100kΩ 10.000V 10kΩ TRIM GND GND 4 4 5 9V +15V -10V -15V - MAX400 Figure 3. ±10V Reference Figure 2. Precision Calibration Standard 15V 2 VIN VOUT 6 IOUT = MAX674 R TRIM 10.0V + 1mA R 5 GND 4 IOUT VOLTAGE COMPLIANCE 25V TO +110V Figure 4. Current Source 4 _______________________________________________________________________________________ +10V Precision Voltage Reference Chip Topography VIN TOP VIEW 2 N.C. N.C. 1 VIN 2 N.C. 6 8 7 VOUT N.C. 6 VOUT MAX674 0.57” 1.45mm 3 5 4 GROUND (CASE) TRIM 5 TRIM TO-99 METAL CAN 4 N.C. 1 8 N.C. VIN 2 7 N.C. N.C. 3 6 VOUT GND 4 5 TRIM 0.78” 1.98mm GND MAX674 CERDIP Ordering Information (continued) PART MAX674CTV* TEMP RANGE 0°C to +70°C INITIAL PINTEMPCO ERROR PACKAGE (ppm/°C) (mV) 8 TO-99 12 15 MAX674ETV* -40°C to +85°C 8 TO-99 15 15 MAX674EJA* -40°C to +85°C 8 CERDIP 15 15 MAX674MTV* -55°C to +125°C 8 TO-99 20 15 MAX674MJA* -55°C to +125°C 8 CERDIP 20 15 *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. MAX674 Pin Configurations (continued)