ANALOG DEVICES +5V Precision Voltage Reference (Guaranteed Long-Term Stability) REF-05 FEATURES 5 Volt Output e Guaranteed Long-Term Stability penne n eee eens 100ppm/1000 Hrs Max Excellent Temperature Stability ....... 8.5ppm/ C Max Low Noise ........... 0050 e cece eee eens 15uVp-p Max e Low Supply Current .............---60 eee 1.4mA Max e Wide Input Voltage Range ...............--- 7V to 40V High Load-Driving Capability ...............+..- 20mA e Short-Circuit Proof Processed Per MIL-STD-883 PIN CONNECTIONS & ORDERING INFORMATION N.C. 8 N.C. 1 TNC TO-99 (J-Suffix) VIN 2 6 VouT REF-05AJ/883 REF-05BJ/883 TEMP 3 5 TRIM GROUND CASE GENERAL DESCRIPTION The REF-05 precision voltage reference provides a stable +5V output which can be adjusted over a +6% range with minimal effect on temperature stability. Long-term drift is guaranteed SIMPLIFIED SCHEMATIC at 100ppm/1000 hrs. maximum. Single-supply operation over an input voltage range of 7V to 40V, low current drain of 1mA, and excellent temperature stability are achieved with an improved bandgap design. Low cost, low noise, and low power make the REF-05 an excellent choice whenever a stable voltage reference is required. Applications include D/A and A/D converters, portable instrumentation, and digital volt- meters. The versatility of the REF-05 is enhanced by its use as a monolithic temperature transducer. For +10V Precision Voltage References see the REF-10 data sheet. LONG-TERM DRIFT PLOT (Average of 20 Devices) 40 20 a -20 40 PPM DRIFT -60 -BO -100 -120 -140 0 20 40 60 80 100 120 140 160 180 DAYS ELAPSED ~o INPUT 2 R15 aig b__-_0 OUTPUT 6 R3 R12 = 6.1ki2 q a4 a3 = 18k Ro So TRIM on RS 02 020 = 1.23V 5 Ri 3 TEMP R10 R11 = 2k R2 GROUND 4 REV. B Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. One Technology Way, P.O. Box 9106, Norwood, MA 02062-3106, U.S.A. Tel: 617/329-4700 Fax: 617/326-8703 Twx: 710/394-6577 Telex: 924491 Cable: ANALOG NORWOODMASSREF-05 ABSOLUTE MAXIMUM RATINGS (Note 1) Input Voltage PREF-O5A, Bo... ccccccecseeecceeceectcesceceesoeeveesoreseesssesseeanesnees 40V Output Short-Circuit Duration (to Ground OF V4)) .eseseeceseceeseeseeeeteeneeseeeeneatetsersseens Indefinite Storage Temperature Range ..................0 -65C to +150C Lead Temperature (Soldering, 60 S@C) ......... eee +300C Operating Temperature Range REF-O5A, REF-O5B ..........ccccceessereseteteens 55C to +125C PACKAGE TYPE 8,, (NOTE 2) Gr UNITS TO-99 (J) 170 24 C NOTES: 1. Derate at 7.1mW/C above 80C ambient temperature for TO-99 (J) package. 2. @.,, is specified for worst case mounting conditions, i.e., Bin is specified for device in socket for TO package. ELECTRICAL CHARACTERISTICS at Vix = + 15V, Ta = 25C, unless otherwise noted. REF-05A REF-05B PARAMETER SYMBOL CONDITIONS MIN TYP MAX MIN TYP MAX UNITS Output Voltage Vo [L=0 4.985 5.0 5.015 4.975 5.0 5.025 Vv Output Adjustment Range AVerim Rp= 10k +3 +6 _ +3 +6 - % Output Voltage Noise np-p 0.1Hz to 10Hz (Note 1) 10 15 _ 10 15 BVp-p Long-Term Stability (Note 1) - 65 100 _ 65 100 ppm/1kHrs Line Regulation (Note 2) Vin = 8V to 33V 0.006 0.010 0.006 0.010 %/V Load Regulation (Note 2) IL =0to 10mA 0.005 0.010 0.006 0.010 %/MA Turn-On Settling Time ton To +0.1% of final value _ 5 _ _ 5 _- us Quiescent Supply Current Isy No Load _ 1 1.4 - 1 1.4 mA Load Current Ile 10 21 - 10 21 _ mA Sink Current Ig (Note 7) ~0.3 -0.5 _ -0.3 -0.5 _ mA Short-Circuit Current Isc Vo=0 15 30 60 15 30 60 mA Temperature Voltage Output Vy (Note 3) _ 630 _ _ 630 _ mV ELECTRICAL CHARACTERISTICS at Vi, = + 15V, -55C < Ta < + 125C and I, = OmA, unless otherwise noted. REF-05A REF-05B PARAMETER SYMBOL CONDITIONS MIN TYP MAX MIN TYP MAX UNITS Output Voltage Change with -65C < Tas +125 0.06 A - . . y Temperature (Notes 4 & 5) AVor 55C <Ta 125C 0.15 0.18 0.45 Yo Output Voltage _ 8.5 _ Temperature Coefficient TCVo (Note 6) 8 10 2 ppm/*C Change in Vo Temperature Coefficient with Output Rp = 10kn. _ 0.7 _ _ 0.7 _ ppm/% Adjustment Line Regulation -5C < Tg = +125C _ 0.009 .01 _ . . y (Viy = 8V to 33V) (Note 2) 55C <Ta, 0.015 0.009 0.015 %o/V Load Regulation 55C < Ta = +125 _ 007 0.012 _ 0. . (I = 0 to 8mA) (Note 2) 56C <Ta Cc 0.00 009 0.015 %/mA Temperature Voltage Output 24 . _ Temperature Coefficient TOVy (Note 3) 2 mv i t Suppl Quiescent Supply Isy No Load _ 1.6 2.0 _ 1.6 20 ma Current NOTES: 1. Sample tested. Long-term stability is tested with power applied continuously. Line and Load Regulation specifications include the effect of self heating. Limit current in or out of pin 3 to 50nA and capacitance on pin 3 to 30pF. AVo7 is defined as the absolute difference between the maximum output voltage and the minimum output voltage over the specified temperature range expressed as a percentage of 5V. Vv -V AVor= MAX MIN]. 490 2. 3. AVot Specification applied trimmed to +5V or untrimmed. TCVo is defined as AVo7 divided by the temperature range, i.e., During sink current test the device meets the output voltage specified. REV. BREF-05 OUTPUT ADJUSTMENT The REF-05 trim terminal can be used to adjust the output voltage over a 5V +300mvV range. This feature allows the system designer to trim system errors by setting the refer- ence to a voltage other than 5V. Of course, the output can also be set to exactly 5V or to 5.12V for binary applications. OUTPUT ADJUSTMENT CIRCUIT Adjustment of the output does not significantly affect the temperature performance of the device. Typically the tem- perature coefficient change is 0.7ppm/C for 100mV of output adjustment. BURN-IN CIRCUIT +18V +15V L Vin 2 Vo 6 VIN REF-05 REF-05 o temp TRIM 10k GND GND 4 LL -18V TYPICAL PERFORMANCE CHARACTERISTICS OUTPUT WIDEBAND NOISE vs BANDWIDTH (0.1Hz LINE REGULATION OUTPUT CHANGE DUE TO TO FREQUENCY INDICATED) vs FREQUENCY THERMAL SHOCK 10,000 0.0031 0.01 w o t - > 8 = a 0.031 2 > & 1000 = x > < 2 2 > 6 a - or F > a < < 5 5 5 z 2 2 031 8 w # we Qo E 100 2 w g > = 10 2 3 5 - a E 2 3 31 z # DEVICE IMMERSED 10 10.0 IN 75C OIL BATH 1 10k 100k 100M 10 100 1k 10k 100k im 10 100 k -10 0 1 2 30 40 50 60 FREQUENCY (Hz) FREQUENCY (Hz) TIME (SEC) REV. BREF-05 PRECISION TEMPERATURE TRANSDUCER WITH REMOTE SENSOR o ey RESISTOR VALUES ; TCVoyr SLOPE (S) 10mVv/C 100mv/* C 10mv/F I: TEMPERATURE -55C to -55C to -67F to VIN 6 Vrer Aa Re RANGE +126C +125C +257F Yo WAN OUTPUT VOLTAGE -0.55V to ~.5V to 0.67V to REF-05 | RANGE +1.25V +12.5V +2.57V Lo s R 2 . . i TRIM es sak 7 Vout ZERO-SCALE ov @orc ov@oc OV @ OF R, For op-05 6 o Ra (+1% resistor) 9.09kn. 16kN 7.5kn 3 V5k, 75% 3 Rp1 (+ 1% resistor) 1.5k0 1.82kN 1.21k2 TEMP |-*~~W 4 GND + Rpp (Potentiometer) 2000 500n 2000 * 8 Ry (+ 1% resistor) 5.11k0 84.5k0 8.25kN by For 125C operation, the op amp output must be able to swing to + 12.5V; * up TO 10 FEET OF SHIELDED _L 6 increase V\, to + 18V from + 15V if necessary. 4-CONDUCTOR CABLE. = -15V TYPICAL TEMPERATURE VOLTAGE REFERENCE STACK WITH EXCELLENT OUTPUT vs TEMPERATURE (REF-05A) LINE REGULATION 80 Two REF-10s and one REF-05 can be stacked to yield 5V, 15V and 25V outputs. An additional advantage is near-perfect line #90 regulation of the 5V and 15V outputs. A 27V to 55V input 3 7a0 change produces an output change which is less than the 5 730 noise voltage of the devices. A load bypass resistor (Rg) oa . 2 680 provides a path for the supply current (Isy) of the 15V 8 aso regulator. 2 580 In general, any number of REF-10s and REF-05s can be 3 stacked this way. For example, ten devices will yield ten B30 outputs in 5V or 10V steps. The line voltage can range from #80 100V to 130V, however, care must be taken to ensure that the 430 total load currents do not exceed the maximum usable -60 -40 -20 0 2 40 6&0 80 100 120 140 . TEMPERATURE (C) current (typically 21mA)}. 27V TO 55V TEMPERATURE CONTROLLER fe V+ (12V TO 32V} VIN 6 9 Vo O 25.000V REF-10 | TRIM 5 eg, 10k. reese rccc 4 GND 4 | 2 | 4 | vin. |g] 819.22 5 Vo MAA, I neatinc | VIN 6 | ELEMENT REF-05 4g] R313 Yo ~ 15.000 tT | GNO | REF-10 (SEE NOTE 1) | TRIM S $ we 10kK2 b= -|---- - --4 2 GND 7 RS, 2.22 v 4 WA 'N Yo 6 5.000V REF-05 > >R NOTES: Tam 10k82 3 bake 1, REF-02 SHOULD BE THERMALLY CONNECTED GND ] TO SUBSTANCE BEING HEATED. 4 2. NUMBERS IN PARENTHESES ARE FOR A. # SETPOINT TEMPERATURE OF 60C. tL 3. R3= RWR2RG = -4- REV. BREF-05 TYPICAL PERFORMANCE CHARACTERISTICS NORMALIZED LOAD MAXIMUM LOAD CURRENT vs INPUT VOLTAGE w or SHORT CIRCUIT PROTECTION Q So REGULATION (Al, = 10mA) vs TEMPERATURE NORMALIZED LINE REGULATION vs TEMPERATURE q 3 ~ fe 1.2 S 12 25 500mW MAXIMUM g a DISSIPATION = x waa O41 = 20 o Oo t 2 g g 1.0 = 1.0 Oo 5 = 2 = @ 09 = o9 5 ww a = 10 x a x q 08 w 0.8 3 Ta = 25C 3 < a _ 5 0.7 0.7 0 0.6 06 5 10 15 20 25 -60 -40 -20 0 20 40 60 80 100 120 140 60-40 -20 0 20 40 60 80 100 120 140 INPUT VOLTAGE (VOLTS) TEMPERATURE (C} TEMPERATURE (C) LINE REGULATION MAXIMUM LOAD CURRENT QUIESCENT CURRENT vs SUPPLY VOLTAGE vs TEMPERATURE vs TEMPERATURE 0.03 30 1.3 ~. V4 Tn =25C <q 25 ~ = 12 = A E < LL s = MN E g 5 A = 0.02 Z 20 zu oa 3 & 2 MR & i 2 o NN 2 1.0 < E g q 3 Vin = 15V 2 A & 9.01 = 10 8 09 Z NY 3 a Pp q 5 08 VIN = 15V 0.0 0 07 |_| 5 10 15 20 25 30 60-40 -20 0 20 40 60 80 100 120 140 60-40 -20 0 20 40 60 80 100 120 140 tNPUT VOLTAGE (VOLTS) TEMPERATURE (C) TEMPERATURE (C} TYPICAL APPLICATIONS +5V REFERENCE +2.5V REFERENCE "3 +5V Vot, +2.5V 2 2 Vin 5 VIN Vo > O +5V vo J R1, 5.6kQ REF-05 Of 5= | REF-06 L AAA oe 3 5 10k T Veer = 5V oS TRIMF_O 4 R2 GND Oks GND 5.6kK2 4 4 O.1KF HBV - 2 A 2 6 oP-02 B =- 4 5k oP-02 O -5V WA + L Vo-1-2.5V -9V = J Ry Ra = Vor" Ry +A (nee} Yo-- BUR (rer) BV 1*Ry 1*R2 REV. BREF-05 PRECISION CURRENT SOURCE A current source with 35V output compliance and excellent output impedance can be obtained using this circuit. REF-05 keeps the line voltage and power dissipation constant in device Q); the only important error consideration at room temperature is the negative supply rejection of the op amp. The typical 3uV/V PSRR of the OP-02E will create a 20ppm change (3nV/V X 35V/5V) in output current over a 35V range. For example, a 5mA current source can be built (R = 1k) with 350M2 output impedance. Rn = 35V 0 20 x 10-6 x 5mA +50V ie v 6 IN Yo REF-05 GND 2 4 Vin Vo ; ae im @ 2 (TRIM FOR CALIBRATION) GND 4 R * | 7 |: 6 OP-O2E Vg =0 TO 35V + OQ 4 = SV fF lot -5V CURRENT SOURCE +15V i vin Vo FE REF-05 3 5 -F TRIM F-O Sa lout * 5.0 +1mA * GND 7 v lout VOLTAGE COMPLIANCE: -25V TO +8V SUPPLY BYPASSING For best results, itis recommended that the power supply pin is bypassed with a 0.1F disc ceramic capacitor. CURRENT SINK lout 2 Vin REF-05 > 5 TRIM f#O 2A lout = S2Y +1ma 2 R GND 4 4 -15V VOLTAGE COMPLIANCE: -8V TO 25V BATTERY-OPERATED D/A CONVERTER REFERENCE MSB 2 B1 B2 B3 B4 BS B6 B7 BB v g| 5.00k2 Vo ANA VRi+) lo - For 01 5 DAC-08 AF REF-05 [-O Vat) 'o HO Ego vV Cc Vic GND +9V Fe IM D/A CONVERTER REFERENCE 5.0k2 +15V 5.0k2 +15V 2 B1 B2 83 B4 BS BG B7 BB VIN - Eg or Vol. DAC-08 oP.02 Oo uF =~ | Rer-o5 [-O + GND fon = = +15V 15V 165V B1 B2 B83 B84 BS B6 B7 BS E POS. FULL-SCALE-1LSB 1 1 14 1 #1 #14 #14 #1 += 244.960 ZERO-SCALE 100 0 0 0 0 0 0.000 NEG. FULL-SCALE+1LSB 0 0 0 0 0 0 0 1. -4.960 NEG. FULL-SCALE 60 0 0 00 0 0 0 -5.000 REV. B a