19-2561; Rev 2; 7/04 +5V Precision Voltage Reference The MAX675 is a precision voltage reference that is pretrimmed to within ±0.15% of 5V. 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 +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 Applications Ordering Information A/D Converters D/A Converters PART INITIAL PINTEMPCO ERROR PACKAGE (ppm/°C) (mV) TEMP RANGE Digital Voltmeters Voltage Regulators MAX675CPA 0°C to +70°C 8 PDIP Threshold Detectors MAX675CSA 0°C to +70°C 8 Narrow SO MAX675EPA -40°C to +85°C 8 PDIP MAX675ESA -40°C to +85°C 8 Narrow SO 12 7 12 7 15 7 15 7 Ordering Information continued at end of data sheet. Pin Configurations Typical Operating Circuit 15V TOP VIEW 2 VIN N.C. 1 8 N.C. 7 N.C. 3 6 VOUT GND 4 5 TRIM VIN 2 TEMP MAX675 VOUT OUTPUT MAX675 3 TEMP TRIM GND SO/DIP 6 5 RP 10kΩ 4 REFERENCE WITH TRIMMED OUTPUT Pin Configurations continued at end of data sheet. ________________________________________________________________ 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 MAX675 General Description MAX675 +5V 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 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 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 Output Voltage Temperature Coefficient (Note 1) Output Adjustment Range CONDITIONS MIN TYP IL = 0mA TCVO VTRIM MAX UNITS ±7 mV MAX675CTV/CPA/CSA 12 MAX675ETV/EJA/EPA/ESA 15 MAX675MTV/MJA 20 Rp = 10 ±150 ±300 ppm/°C 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 750 1400 µA 10 15 µVP-P Turn-On Settling Time Quiescent Supply Current Noise (Note 3) Sink Current tON IQ eN(P-P) To ±0.1% of final value 5 No load 0.1Hz to 10Hz IS 0.3 µs 0.5 mA Short-Circuit Current ISC VOUT = 0V 30 mA Current Temperature Voltage Output VT (Note 4) 630 mV 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. 2 _______________________________________________________________________________________ +5V Precision Voltage Reference MAX675 Output Adjustment The MAX675 trim terminal can be used to adjust the output 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 applications (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. 880 TEMP VOLTAGE OUTPUT (mV) 830 780 730 680 630 580 530 Temperature Voltage Output 480 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). 430 -60 -40 -20 0 20 40 60 80 100 120 140 TEMPERATURE (°C) Figure 2. MAX675 Temperature Voltage Output vs. Temperature Output Voltage = 2.1(T + 273)mV where T = Temperature in °C Typical Operating Characteristics (TA = +25°C, unless otherwise noted.) MAX675 OUTPUT WIDEBAND NOISE vs. BANDWIDTH (0.1Hz TO FREQUENCY INDICATED) OUTPUT NOISE (µVP-P) LINE REGULATION (dB) 56 46 36 26 1000 100 16 35 MAX675 toc03 66 10,000 MAXIMUM LOAD CURRENT (mA) VIN = 15V TA = +25°C MAXIMUM LOAD CURRENT vs. INPUT VOLTAGE MAX675 toc02 76 MAX675 toc01 LINE REGULATION vs. FREQUENCY SHORT-CIRCUIT PROTECTION 30 25 500mW MAXIMUM DISSIPATION 20 15 10 5 TA = +25°C 6 0 10 10 100 1k 10k FREQUENCY (Hz) 100k 1M 10 100 1k 10k FREQUENCY (Hz) 100k 1M 5 10 15 20 25 INPUT VOLTAGE (V) _______________________________________________________________________________________ 3 Typical Operating Characteristics (continued) (TA = +25°C, unless otherwise noted.) OUTPUT CHANGE DUE TO THERMAL SHOCK 25 20 15 10 5 0.035 MAX675 toc05 VIN = 15V PERCENT CHANGE IN OUTPUT VOLTAGE (%) 30 MAX675 toc04 MAXIMUM LOAD CURRENT vs. TEMPERATURE MAXIMUM LOAD CURRENT (mA) MAX675 +5V Precision Voltage Reference 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 0 -60 -40 -20 0 0 -10 20 40 60 80 100 120 140 10 20 30 40 50 60 TIME (s) TEMPERATURE (°C) Typical Applications 15V 1.1mA 3 TEMP 2 2 VIN VIN VOUT 6 VOUT + 6 +5V 10kΩ MAX675 MAX675 3 TRIM 5 100kΩ 10kΩ TEMP 5.000V TRIM GND GND 4 4 9V 4 +15V 2 6 3 4 -15V 5kΩ - Figure 3. Precision Calibration Standard 5 MAX400 Figure 4. ±5V Reference _______________________________________________________________________________________ -5V +5V Precision Voltage Reference 2 2 VIN VIN VOUT VOUT 6 5.11kΩ TRIM IOUT = MAX675 3 TEMP R TRIM VREF 9.09kΩ 6 5.0V + 1mA R 5 MAX675 TEMP 3 1.5kΩ ±5% 3 + 4 6 4 200kΩ 4 -15V *UP TO 10 FEET OF SHIELDED 4-CONDUCTOR CABLE. VOLTAGE COMPLIANCE -25V TO +8V Figure 5. Current Source VOUT (10mV/°C) * GND IOUT - 7 MAX400 5 GND 2 50kΩ 1.5kΩ Figure 6. Precision Temperature Transducer with Remote Sensor Chip Topography Pin Configurations (continued) VIN 2 TOP VIEW 6 VOUT N.C. N.C. 0.57” 1.45mm VIN 2 5 3 4 TEMP GND 0.78” 1.98mm TRIM TEMP N.C. 6 VOUT MAX675 3 5 4 GROUND (CASE) N.C. 1 TRIM 8 N.C. 7 N.C. 3 6 VOUT GND 4 5 TRIM VIN 2 MAX675CTV* 7 TO-99 METAL CAN Ordering Information PART 8 1 INITIAL PINTEMPCO ERROR TEMP RANGE PACKAGE (ppm/°C) (mV) 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 TEMP MAX675 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. MAX675 +15V 15V