Home

ANALOG DEVICES ADR5045 handbook

1. Table 2 Parameter Symbol Conditions Min Typ Max Unit OUTPUT VOLTAGE Vour ln 100 pA Grade A 2 044 2 048 2 052 V Grade B 2 046 2 048 2 050 V INITIAL ACCURACY VotRR ln 100 pA Grade A 4 096 4 096 mV 0 2 Grade B 2 048 42 048 mV 0 1 TEMPERATURE COEFFICIENT TCVour 40 C lt Ta lt 125 Grade A 10 100 10 75 OUTPUT VOLTAGE CHANGE vs lin AVR ln 50 pA to 1 mA 40 C lt Ta lt 125 C 0 4 1 75 mV 1 to 15 mA 409 lt Ta lt 125 C 4 8 mV DYNAMIC OUTPUT IMPEDANCE AVr Alr ln 50 pA to 15 mA 0 2 Q MINIMUM OPERATING CURRENT lin Ta 25 C 50 HA 0 C lt Ta lt 125 C 60 uA VOLTAGE NOISE en lin 100 pA 0 14HZ to TO HZ3 7 E HV rms MM IN 10 210 10 2 0 uV rms TURN ON SETTLING TIME tr Cioap 0 pF 28 us OUTPUT VOLTAGE HYSTERESIS AVour Hys In 1 mA 40 ppm Guaranteed by design ADR5041 ELECTRICAL CHARACTERISTICS In 50 pA to 15 mA Ta 25 C unless otherwise noted Table 3 Parameter Symbol Conditions Min Typ Max Unit OUTPUT VOLTAGE Vout lin 100 pA Grade A 2 495 2 500 2 505 V Grade B 2 4975 2 500 2 5025 V INITIAL ACCURACY Voerr ln 100 pA Grade A 5 5 mV 0 2 Grade B 2 5 42 5 mV 0 1 TEMPERATURE COEFFICIENT TCVour 40 C lt Ta lt 125 Grade A 10 100 ppm C Grade B 10 75 ppm C OUTPUT VOLTAGE CHANGE vs lin AVR ln 50 pA to 1 mA 40 lt Ta lt 125 C 0 5 1 8
2. 10us DIV Figure 12 ADR5045 Transient Response 1Ous DIV Figure 13 ADR5045 Transient Response 25 10mV DIV 250 2504A 10mV DIV 2 5mA 2 5 20mV DIV 06526 011 06526 012 06526 016 ADR5040 ADR5041 ADR5043 ADR5044 ADR5045 10k 10k 5 100 5 100 u ly 1504A E EH w ES 10 a 10 i C 1pF lin 1 1 0 1 0 1 100 1k 10k 100k 1M 2 100 1k 10k 100k 1 g FREQUENCY Hz 8 FREQUENCY Hz 8 Figure 14 ADR5041 Output Impedance vs Frequency Figure 17 ADR5045 Output Impedance vs Frequency NOISE nVN Hz NOISE nVNHz i 1 10 100 1k 10k 2 FREQUENCY Hz 8 FREQUENCY Hz 8 Figure 15 ADR5041 Voltage Noise Density Figure 18 ADR5045 Voltage Noise Density REVERSE CURRENT uA 06526 002 REVERSE VOLTAGE V Figure 16 ADR504x Reve
3. ORDERING GUIDE Output Initial Tempco Voltage Accuracy Industrial Temperature Package Package Ordering Model V mV ppm C Range Description Option Quantity Branding ADR5040AKSZ R2 2 048 4 096 100 40 C to 125 3 Lead SC70 KS 3 250 R2J ADR5040AKSZ REEL 2 048 4 096 100 40 C to 125 3 Lead SC70 KS 3 10 000 R2J ADR5040AKSZ REEL7 2 048 4 096 100 40 C to 125 C 3 Lead SC70 KS 3 3 000 R2J ADR5040ARTZ R2 2 048 4 096 100 40 C to 125 3 Lead SOT 23 3 RT 3 250 R2J ADR5040ARTZ REEL 2 048 4 096 100 40 C to 125 3 Lead SOT 23 3 RT 3 10 000 R2J ADR5040ARTZ REEL7 2 048 4 096 100 40 C to 125 3 Lead SOT 23 3 RT 3 3 000 R2J ADR5040BKSZ R2 2 048 2 048 75 40 C to 125 C 3 Lead SC70 KS 3 250 R2L ADR5040BKSZ REEL7 2 048 2 048 75 40 C to 125 C 3 Lead SC70 KS 3 3 000 R2L ADR5040BRTZ R2 2 048 2 048 75 40 C to 125 C 3 Lead SOT 23 3 RT 3 250 R2L ADR5040BRTZ REEL7 2 048 2 048 75 40 C to 125 3 Lead SOT 23 3 RT 3 3 000 R2L Rev A Page 13 of 16 ADR5040 ADR5041 ADR5043 ADR5044 ADR5045 Output Initial Tempco Voltage Accuracy Industrial Temperature Package Package Ordering Model V mV ppm C Range Description Option Quantity Branding ADR5041AKSZ R2 2 500 5 100 40 C to 125 C 3 Lead SC70 KS 3 250 R2N ADR5041AKSZ REEL 2 500 5 100 40 C to 125 C 3 Lead SC70 KS 3 10 000 R2N ADR5041AKSZ REEL7 2 5
4. 06526 022 V GND OPTIONAL Figure 22 Adjustable Voltage Source 1 1 Programmable Current Source By using just a few ultrasmall and inexpensive parts it is possible to build a programmable current source as shown in Figure 23 The constant voltage on the gate of the transistor sets the current through the load Varying the voltage on the gate changes the current The AD5247 is a digital potentiometer with digital interface and the AD8601 is a precision rail to rail input op amp Each incremental step of the digital potentiometer increases or decreases the voltage at the noninverting input of the op amp Therefore this voltage varies with respect to the reference voltage Vpp ADR5040 ADR5041 ADR5043 ADR5044 AD5247 ADR5045 xi V Figure 23 Programmable Current Source NAL 06526 023 Rev A Page 12 of 16 ADR5040 ADR5041 ADR5043 ADR5044 ADR5045 OUTLINE DIMENSIONS 0 10 MAX s 0 65 BSC 1 10 0 80 TRIS 0 25 SEATING 10 0 10 COPLANARITY PEANE 111505 0 ALL DIMENSIONS COMPLIANT WITH EIAJ SC70 Figure 24 3 Lead Thin Shrink Small Outline Transistor Package SC70 KS 3 Dimensions shown in millimeters 0 100 0 003 1 n SEATING PLANE 1 COMPLIANT TO JEDEC STANDARDS 236 Figure 25 3 Lead Small Outline Transistor Package SOT 23 3 RT 3 Dimensions shown in millimeters 092707 A
5. Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device This is a stress rating only functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied Exposure to absolute maximum rating conditions for extended periods may affect device reliability UM Unit 3 Lead SC70 KS 580 5 1774 C W 3 Lead SOT 23 RT 270 102 C W ESD CAUTION ESD electrostatic discharge sensitive device Charged devices and circuit boards can discharge without detection Although this product features patented or proprietary protection circuitry damage may occur on devices subjected to high energy ESD Therefore proper ESD precautions should be taken to avoid performance degradation or loss of functionality Rev Page 6 of 16 ADR5040 ADR5041 ADR5043 ADR5044 ADR5045 TYPICAL PERFORMANCE CHARACTERISTICS Ta 25 C Im 100 HA unless otherwise noted 6 IR 1504A 4 2 r 5 E o o Qo 2 2 B7 r 5 gt gt 4 6 15 40 25 10 5 20 35 50 65 80 95 110 125 TEMPERATURE C 8 40 25 10 5 20 35 50 65 80 95 110 125 TEMPERATURE C 06526 003 06526 005 Figure 2 ADR5041 Vour Change vs Temperature Figure 5 ADR5045 Vour Change vs
6. Temperature REVERSE VOLTAGE CHANGE mV REVERSE VOLTAGE CHANGE mV 0 5 10 15 20 5 IsHunt mA mA Figure 3 ADR5041 Reverse Voltage Change vs Figure 6 ADR5045 Reverse Voltage Change vs 1V DIV 2VIDIV 06526 007 10ys DIV 06526 010 10 s DIV Figure 4 ADR5041 Start Up Characteristics Figure 7 ADR5045 Start Up Characteristics Rev A Page 7 of 16 ADR5040 ADR5041 ADR5043 ADR5044 ADR5045 Veen 2V DIV Vg AC COUPLED VGEN VGEN AC COUPLED AC COUPLED 10ps DIV Figure 8 ADR5041 Load Transient Response 1 250pA 10 10 s DIV Figure 9 ADR5041 Transient Response 10ps DIV Figure 10 ADR5041 Transient Response 25 gt amp 2 ul gt 25 gt a gt 3 M lt gt 250 2 ul gt 250 gt a gt 5 9 4 o gt 42 5mA gt amp gt ul gt 2 5mA 8 gt gt 5 9 ex lt 4 gt 06526 013 Rev A Page 8 of 16 100mA 25 100kQ 40ps DIV Figure 11 ADR5045 Load Transient Response
7. Lead SOT 23 3 RT 3 3 000 R32 17 RoHS Compliant Part Rev A Page 14 of 16 ADR5040 ADR5041 ADR5043 ADR5044 ADR5045 NOTES Rev A Page 15 of 16 ADR5040 ADR5041 ADR5043 ADR5044 ADR5045 NOTES TN Purchase of licensed PC components of Analog Devices or one of its sublicensed Associated Companies conveys a license for the purchaser under the Philips Patent Rights to use these components an system provided that the system conforms to the Standard Specification as defined by Philips 2007 Analog Devices Inc All rights reserved Trademarks and ANALOG registered trademarks are the property of their respective owners 006526 0 12 07 DEVICES www analog com Rev A Page 16 of 16
8. Pin Configuration ss General Description coiere eti ee E AIDE Revision HIStory evict essed es sip ele Specifications octets tmt EE ADR5040 Electrical Characteristics ees ADR5041 Electrical Characteristics ess ADR5043 Electrical Characteristics sss ADR5044 Electrical Characteristics eese REVISION HISTORY 12 07 Rev 0 to Rev A Changes to Features ettet eee Changes to Initial Accuracy and Temperature Coefficient Parameters in Table 2 Through Table 6 ss Updated Outline Dimensions d Changes to Ordering Guide sse 1 07 Revision 0 Initial Version ADR5045 Electrical Characteristics ees 6 Absolute Maximum 7 Thermal Resistance sanese 7 ESD Cauti n de RE RE EYE 7 Typical Performance Characteristics eee 8 Terminologyz pete reins 11 Theory Of Operation ss cssssiersscsaseecssesseondsesiensdssstnecssssiesndseabesisdannes 12 Applications 12 Outline DIMENSIONS inssin 14 Ordering Guide er EN ms 14 Rev A Page 2 of 17 ADR5040 ADR5041 ADR5043 ADR5044 ADR5045 SPECIFICATIONS ADR5040 ELECTRICAL CHARACTERISTICS In 50 pA to 15 mA Ta 25 C unless otherwise noted
9. 00 5 100 40 C to 125 C 3 Lead SC70 KS 3 3 000 R2N ADR5041ARTZ R2 2 500 5 100 40 C to 125 3 Lead SOT 23 3 RT 3 250 R2N ADR5041ARTZ REEL 2 500 5 100 40 C to 125 3 Lead SOT 23 3 RT 3 10 000 R2N ADR5041ARTZ REEL7 2 500 5 100 40 C to 125 3 Lead SOT 23 3 RT 3 3 000 R2N ADR5041BKSZ R2 2 500 2 5 75 40 C to 125 C 3 Lead SC70 KS 3 250 R2Q ADR5041BKSZ REEL7 2 500 2 5 75 40 C to 125 C 3 Lead SC70 KS 3 3 000 R2Q ADR5041BRTZ R2 2 500 2 5 75 40 C to 125 3 Lead SOT 23 3 RT 3 250 R2Q ADR5041BRTZ REEL7 2 500 2 5 75 40 C to 125 3 Lead SOT 23 3 RT 3 3 000 R2Q ADR5043AKSZ R2 3 0 6 100 40 C to 125 3 Lead SC70 KS 3 250 R2S ADR5043AKSZ REEL 3 0 6 100 40 C to 125 C 3 Lead SC70 KS 3 10 000 R2S ADR5043AKSZ REEL7 3 0 6 100 40 C to 125 C 3 Lead SC70 KS 3 3 000 R2S ADR5043ARTZ R2 3 0 6 100 40 C to 125 3 Lead SOT 23 3 RT 3 250 R2S ADR5043ARTZ REEL 3 0 6 100 40 C to 125 3 Lead SOT 23 3 RT 3 10 000 R2S ADR5043ARTZ REEL7 3 0 6 100 40 C to 125 3 Lead SOT 23 3 RT 3 3 000 R2S ADR5043BKSZ R2 3 0 3 75 40 C to 125 3 Lead SC70 KS 3 250 R2U ADR5043BKSZ REEL7 3 0 3 75 40 C to 125 3 Lead SC70 KS 3 3 000 R2U ADR5043BRTZ R2 3 0 3 75 40 C to 125 3 Lead SOT 23 3 RT 3 250 R2U ADR5043BRTZ REEL7 3 0 3 75 40 C to 125 3 Lead SOT 23 3 RT 3 3 000 R2U ADR5044AKSZ R2 4 096 8 192 100 40 C to 125 C 3 Lead SC70 KS 3 250 R2W ADR5044AKSZ REEL 4
10. 096 8 192 100 40 C to 125 C 3 Lead SC70 KS 3 10 000 R2W ADR5044AKSZ REEL7 4 096 8 192 100 AAO to 125 C 3 lead 5 70 KS 3 3 000 R2W ADR5044ARTZ R2 4 096 41 92 100 3 40 C 125 3 Lead 507 2373 250 R2W ADR5044ARTZ REEL 4 096 8 192 100 40 C to 1 C 3 Lead SOT 23 3 RES 10 000 R2W ADR5044ARTZ REEL7 4 096 8 192 100 40 C to 125 3 Lead SOT 23 3 RT 3 3 000 R2W ADR5044BKSZ R2 4 096 4 096 75 40 C to 125 3 Lead SC70 KS 3 250 R2Y ADR5044BKSZ REEL7 4 096 4 096 75 40 C to 125 3 Lead SC70 KS 3 3 000 R2Y ADR5044BRTZ R2 4 096 4 096 75 40 C to 125 3 Lead SOT 23 3 RT 3 250 R2Y ADR5044BRTZ REEL7 4 096 4 096 75 40 C to 125 3 Lead SOT 23 3 RT 3 3 000 R2Y ADR5045AKSZ R2 5 0 10 100 40 C to 125 3 Lead SC70 KS 3 250 R30 ADR5045AKSZ REEL 5 0 10 100 40 C to 125 C 3 Lead SC70 KS 3 10 000 R30 ADR5045AKSZ REEL7 5 0 10 100 40 C to 125 3 Lead SC70 KS 3 3 000 R30 ADR504SARTZ R2 5 0 10 100 40 C to 125 3 Lead SOT 23 3 RT 3 250 R30 ADR5045ARTZ REEL 5 0 10 100 40 C to 125 3 Lead SOT 23 3 RT 3 10 000 R30 ADR5045ARTZ REEL7 5 0 10 100 40 C to 125 3 Lead SOT 23 3 RT 3 3 000 R30 ADR5045BKSZ R2 5 0 5 75 40 C to 125 3 Lead SC70 KS 3 250 R32 ADR5045BKSZ REEL7 5 0 5 75 40 C to 125 C 3 Lead SC70 KS 3 3 000 R32 ADR5045BRTZ R2 5 0 5 75 40 C to 125 3 Lead SOT 23 3 RT 3 250 R32 ADR5045BRTZ REEL7 5 0 5 75 40 C to 125 3
11. 100 pA 10 Hz to 10 kHz 180 rms TURN ON SETTLING TIME tr Cioap 0 UF 42 us OUTPUT VOLTAGE HYSTERESIS AVour Hys In 1 mA 40 ppm Guaranteed by design ADR5044 ELECTRICAL CHARACTERISTICS In 50 uA to 15 mA T4 25 C unless otherwise noted Table 5 Parameter Symbol Conditions Min Typ Max Unit OUTPUT VOLTAGE Vour lin 100 pA Grade A 4 088 4 096 4 104 V Grade B 4 092 4 096 4 100 V INITIAL ACCURACY Voerr lin 100 pA Grade A 8 192 8 192 mV 0 2 Grade B 4 096 4 096 0 1 Rev A Page 4 of 16 ADR5040 ADR5041 ADR5043 ADR5044 ADR5045 Parameter Symbol Conditions Min Typ Max Unit TEMPERATURE COEFFICIENT TCVour 40 C lt Ta lt 125 C Grade A 10 100 Grade 10 75 OUTPUT VOLTAGE CHANGE vs lin AVR lIn 50 pA to 1 mA 40 C lt Ta lt 125 0 7 3 mV 1 mA to 15 mA 40 C lt TA lt 125 4 8 mV DYNAMIC OUTPUT IMPEDANCE AVa Alg ln 50 pA to 15 mA 0 2 MINIMUM OPERATING CURRENT lin Ta 25 C 50 HA 40 C lt Ta lt 125 C 60 HA VOLTAGE NOISE en lin 100 pA 0 1 Hz to 10 Hz 5 4 rms In 100 pA 10 Hz to 10 kHz 240 rms TURN ON SETTLING TIME tr 0 UF 56 us OUTPUT VOLTAGE HYSTERESIS AVour Hys In 1 mA 40 ppm 1 Guaranteed by design ADR5045 ELECTRICAL CHARACTERISTICS In 50 pA to 15 mA Ta 25 C unless otherwise noted Table 6 Parameter Symbol Co
12. ANALOG DEVICES Precision Micropower Shunt Mode Voltage References ADR5040 ADR5041 ADR5043 ADR5044 ADR5045 FEATURES Ultracompact SC70 and SOT 23 packages Low temperature coefficient 75 ppm C maximum Pin compatible with LM4040 LM4050 Initial accuracy 0 1 No external capacitor required Wide operating current range 50 pA to 15 mA Extended temperature range 40 C to 125 C APPLICATIONS Portable battery powered equipment Automotives Power supplies Data acquisition systems Instrumentation and process control Energy management GENERAL DESCRIPTION Designed for space critical applications the ADR5040 ADR5041 ADR5043 ADRS044 A DR5045 are high precision shunt voltage references housediin ulttasmall 5670 and SOT 23 packages These voltage references are multipurpose easy to use references that can be used in a vast array of applications They feature low temperature drift an initial accuracy of better than 0 1 and fast settling time Available in output voltages of 2 048 V 2 5 V 3 0 V 4 096 V and 5 0 V the advanced design of the ADR5040 ADR5041 ADR5043 ADR5044 ADR5045 eliminates the need for compensation by an external capacitor yet the references are stable with any capacitive load The minimum operating current increases from 50 uA to a maximum of 15 mA This low operating current and ease of use make these references ideally suited for handheld battery powered applications This family of refe
13. ION The ADR504x family uses the band gap concept to produce a stable low temperature coefficient voltage reference suitable for high accuracy data acquisition components and systems The devices use the physical nature of a silicon transistor base emitter voltage in the forward biased operating region All such transistors have approximately a 2 mV C temperature coefficient making them unsuitable for direct use as a low temperature coefficient reference Extrapolation of the temperature charac teristic of any one of these devices to absolute zero with the collector current proportional to the absolute temperature however reveals that its Var approaches approximately the silicon band gap voltage Therefore if a voltage develops with an opposing temperature coefficient to sum the Var a zero temperature coefficient reference results APPLICATIONS INFORMATION The ADR5040 ADR5041 ADR5043 ADR5044 ADR5045 are a series of precision shunt voltage references They are designed to operate without an external capacitor between the positive and negative terminals If a bypass capacitor is used to filter the supply the references remain stable For a stable voltage all shunt voltage references require an external bias resistor Reis between the supply voltage and the reference see Figure 19 The Rams sets the cugrentjthateflows through the load 11 and the WW IN Because the load and the supply voltage can vary the Rsusfieeds
14. mV 1 mA to 15 mA 40 C lt Ta lt 125 4 8 mV Rev A Page 3 of 16 ADR5040 ADR5041 ADR5043 ADR5044 ADR5045 Parameter Symbol Conditions Min Typ Max Unit DYNAMIC OUTPUT IMPEDANCE AVe AlR lIn 50 pA to 15 mA 0 2 Q MINIMUM OPERATING CURRENT lin Ta 25 C 50 yA 40 lt Ta lt 125 C 60 HA VOLTAGE NOISE en lin 100 pA 0 1 Hz to 10 Hz 3 2 rms lin 100 pA 10 Hz to 10 kHz 150 uV rms TURN ON SETTLING TIME tr Cioap 0 35 us OUTPUT VOLTAGE HYSTERESIS AVour Hys 1 mA 40 ppm 1 Guaranteed by design ADR5043 ELECTRICAL CHARACTERISTICS In 50 pA to 15 mA Ta 25 C unless otherwise noted Table 4 Parameter Symbol Conditions Min Typ Max Unit OUTPUT VOLTAGE Vour ln 100 pA Grade A 2 994 3 000 3 006 V Grade B 2 997 3 000 3 003 V INITIAL ACCURACY Voerr lin 100 pA Grade A 6 6 mV 0 2 Grade B 3 3 mV 0 1 TEMPERATURE COEFFICIENT TCVour 409 lt TA lt 125 Grade A ST 10 100 1 0 75 ppm C OUTPUT VOLTAGE CHANGE vs lin AVR ln 50 pA to 1 mA 40 C lt Ta lt 125 0 7 2 2 mV In 1 to 15 mA 40 lt Ta lt 125 C 4 8 mV DYNAMIC OUTPUT IMPEDANCE AVa Alg ln 50 pA to 15 mA 0 2 MINIMUM OPERATING CURRENT lin Ta 25 C 50 yA 40 C lt Ta lt 125 60 uA VOLTAGE NOISE en lin 100 pA 0 1 Hz to 10 Hz 4 3 rms lin
15. nditions Min Typ Max Unit OUTPUT VOLTAGE Vout ln 100 pA Grade A 1 4990 5000 5010 V Grade A 4 095 p 5005 v INITIAL ACCURACY Vosa iy 100 pA 10 10 mV 0 2 Grade B 5 5 mV 0 1 TEMPERATURE COEFFICIENT TCVour 40 C lt Ta lt 125 Grade A 10 100 Grade 10 75 OUTPUT VOLTAGE CHANGE vs lin AVR ln 50 pA to 1 mA 40 C lt Ta lt 125 C 0 8 4 mV 1 mA to 15 mA 40 lt Ta lt 125 C 4 8 mV DYNAMIC OUTPUT IMPEDANCE AVr Alr ln 50 pA to 15 mA 0 2 Q MINIMUM OPERATING CURRENT lin Ta 25 50 HA 40 C lt Ta lt 125 60 HA VOLTAGE NOISE en lin 100 pA 0 1 Hz to 10 Hz 6 6 rms In 100 pA 10 Hz to 10 kHz 280 rms TURN ON SETTLING TIME tr 0 UF 70 us OUTPUT VOLTAGE HYSTERESIS AVour Hys In 1 mA 40 ppm Guaranteed by design Rev A Page 5 of 16 ADR5040 ADR5041 ADR5043 ADR5044 ADR5045 ABSOLUTE MAXIMUM RATINGS Ratings apply at 25 C unless otherwise noted Table 7 Parameter Rating Reverse Current 25 mA Forward Current 20 mA Storage Temperature Range 65 C to 150 C Extended Temperature Range 40 to 125 C Junction Temperature Range 65 C to 150 C Lead Temperature Soldering 60 sec 300 C THERMAL RESISTANCE is specified for the worst case conditions that is a device soldered in a circuit board for surface mount packages Table 8 Thermal Resistance
16. ng that the same bias current flows through all the shunt references in series Figure 21b shows three ADR5045 devices stacked together to give 15 V Reus is calculated in the same manner as before Parts of different voltages can also be added together that is an ADR5041 and an ADR5045 be added together to give an output of 7 5 V or 7 5 V as desired Note however that the initial accuracy error is the sum of the errors of all the stacked parts as are the temperature coefficient and output voltage change vs input current Vpp RBlAs 15V ADR5045 15V ADR5045 ADR5045 8 8 Figure 21 15 V Output with Stacked ADR5045 Devices Rev A Page 11 of 16 ADR5040 ADR5041 ADR5043 ADR5044 ADR5045 Adjustable Precision Voltage Source The ADR5040 ADR5041 ADR5043 ADR5044 ADR5045 combined with a precision low input bias op amp such as the AD8610 can be used to output a precise adjustable voltage Figure 22 illustrates the implementation of this application using the ADR5040 ADR5041 ADR5043 ADR5044 ADR5045 The output of the op amp Vour is determined by the gain of the circuit which is completely dependent on the resistors and R2 Vour 1 R2 R1 Vrzr An additional capacitor C1 in parallel with R2 can be added to filter out high frequency noise The value of C1 is dependent on the value of R2 VREF O Vout Vrer 1 R2 R1 ADR5040 ADR5041 ADR5043 ADR5044 ADR5045
17. rences has been characterized over the extended temperature range of 40 C to 125 C Rev Information fumished 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 that may result from its use Specifications subject to change without notice No license is granted by implication or otherwise under any patent or patent rights of Analog Devices Trademarks and registered trademarks are the property of their respective owners PIN CONFIGURATION ADR5040 ADR5041 ADR5043 ADR5044 ADR5045 V NC V NOTES 1 NC NO CONNECT 2 PIN 3 MUST BE LEFT FLOATING OR CONNECTED TO GROUND Figure 1 3 Lead SC70 KS and 3 Lead SOT 23 RT 06526 001 Table 1 Selectign Table Temperature Coefficient Part Voltage V Accuracy ppm C ADR5040A 2 048 0 2 100 ADR5040B 2 048 0 1 75 ADRSOMA 2 5 0 2 100 ADR5041B 2 5 0 1 75 ADR5043A 3 0 0 2 100 ADR5043B 3 0 0 1 75 ADR5044A 4 096 0 2 100 ADR5044B 4 096 0 1 75 ADR5045A 5 0 0 2 100 ADR5045B 5 0 0 1 75 One Technology Way P O Box 9106 Norwood MA 02062 9106 U S A Tel 781 329 4700 www analog com Fax 781 461 3113 2007 Analog Devices Inc All rights reserved ADR5040 ADR5041 ADR5043 ADR5044 ADR5045 TABLE OF CONTENTS Features te Applications eoe oe IRURE RR RR IU
18. rse Characteristics and Minimum Operating Current Rev A Page 9 of 16 ADR5040 ADR5041 ADR5043 ADR5044 ADR5045 TERMINOLOGY Temperature Coefficient The change in output voltage with respect to operating temperature changes It is normalized by an output voltage of 25 C This parameter is expressed in ppm C and is determined by the following equation rcv PE Vour T Vor T x106 1 C Voyp 25 C x T T where Vour 25 C Vour at 25 C Vovr at Temperature 1 Vour T2 Vour at Temperature 2 1 1 Thermal Hysteresis The change in output voltage after the device is cycled through temperatures ranging from 25 C to 40 C then to 125 C and back to 25 C This is common in precision reference and is caused by thermal mechanical package stress Changes in envi ronmental storage temperature board mounting temperature and the operating temperature are some of the factors that can contribute to thermal hysteresis The following equation expresses a typical value from a sample of parts put through such a cycle uvs Vour 25 C Vour 05 10 OUT x10 Vour 25 C Vour ys ppm where Vour 25 C Vourat 25 C Vour rc Vovr at 25 C after a temperature cycle from 25 C to 409 then to 125 C and back to 25 C NAL Rev Page 10 of 16 ADR5040 ADR5041 ADR5043 ADR5044 ADR5045 THEORY OF OPERAT
19. to bethosen based on the following considerations e Rais must be small enough to supply the minimum Incurrent to the ADR5040 ADR5041 ADR5043 ADR5044 ADR5045 even when the supply voltage is at its minimum value and the load current is at its maximum value e Ras must be large enough so that Im does not exceed 15 mA when the supply voltage is at its maximum value and the load current is at its minimum value Given these conditions Rss is determined by the supply voltage Vs the ADR5040 ADR5041 ADR5043 ADR5044 ADR5045 load and operating current I and and the ADR5040 ADR5041 ADR5043 ADR5044 ADR5045 output voltage Vour R 5 OUT 3 BIAS I ne Vout IL ADR5040 ADR5041 ADR5043 ADR5044 ADR5045 Figure 19 Shunt Reference 06526 019 Precision Negative Voltage Reference The ADR5040 ADR5041 ADR5043 ADR5044 ADR5045 are suitable for applications where a precise negative voltage is desired Figure 20 shows the ADR5045 configured to provide a negative output Caution should be exercised in using a low temperature sensitive resistor to avoid errors from the resistor 06526 020 Vcc Figure 20 Negative Precision Reference Configuration Stacking theADR504x Outputs Multiple ADR504x partsleari e stacked together to allow the user to obtain a desired higher voltage Figure 21a shows three ADR5045 devices configured to give 15 V The bias resistor Raus is chosen using Equation 3 noti

ANALOG DEVICES ADR5045 handbook

Contents

Download Pdf Manuals

Related Search

Related Contents