ISL21090BFB825Z-TK

DATASHEET ISL21090 FN6993 Rev 5.00 February 27, 2013 Ultra Low Noise, Precision Voltage Reference The ISL21090 is a ultra low noise, high DC accuracy precision voltage reference with wide input voltage range. The ISL21090 uses the new Intersil Advanced Bipolar technology to achieve sub 1.0µVP-P (1.25V option) 0.1Hz to 10Hz noise with an initial voltage accuracy of 0.02% (2.5V option). The ISL21090 offers 1.25V, 2.5V, 5.0V and 7.5V output voltage options with 7ppm/°C temperature coefficient and also provides excellent line and load regulation. These devices are offered in an 8 Ld SOIC package. The ISL21090 is ideal for high-end instrumentation, data acquisition and processing applications requiring high DC precision where low noise performance is critical. Features • Reference output voltage option - 1.25V, 2.5V, 5.0V and 7.5V • Initial accuracy: - ISL21090-12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±0.03% - ISL21090-25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±0.02% - ISL21090-50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±0.025% - ISL21090-75 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±0.035% • Output voltage noise (0.1Hz to 10Hz) . . . . . . . . . . . . 1.0µVP-P typ (1.25V option) • Supply current . . . . . . . . . . . . . . . . . . . . 750µA (1.25V option) Applications • Temperature coefficient . . . . . . . . . . . . . . . . . . 7ppm/°C max • Output current capability . . . . . . . . . . . . . . . . . . . . . . . . 20mA • High-end instrumentation • Precision voltage sources for data acquisition system, industrial control, communication infrastructure • Line regulation . . . . . . . . . . . . . . . . . . .6ppm/V (1.25V option) • Load regulation . . . . . . . . . . . . . . 2.5ppm/mA (1.25V option) • Process control and instrumentations • Operating temperature range. . . . . . . . . . . .-40°C to +125°C • Active source for sensors Related Literature See AN1764, “ISL21090XXEV1Z User’s Guide” VIN 2 10µF 0.1µF 3 4 DNC DNC VIN DNC COMP GND VDD SERIAL CLOCK CHIP SELECT SERIAL DATA I/O VOUT TRIM 2.5010 8 7 2.5005 6 2.5000 5 0.1µF VREF SCLK OUTxS CSb OUTxF SDIO 2.4995 2.4990 DACOUTx GND DAC FIGURE 1. ISL21090 TYPICAL APPLICATION DIAGRAM FN6993 Rev 5.00 February 27, 2013 TYPICAL TEMPERATURE COEFFICIENT CURVE FOR 10 UNITS VREF VOUT (V) 1 2.4985 2.4980 -55 -35 -15 5 25 45 65 85 105 125 TEMPERATURE (°C) FIGURE 2. VOUT vs TEMPERATURE (2.5V OPTION) Page 1 of 20 145 ISL21090 Pin Configuration ISL21090 (8 LD SOIC) TOP VIEW 1 DNC DNC VIN DNC 8 7 2 3 4 COMP 6 VOUT GND 5 TRIM Pin Descriptions PIN NUMBER PIN NAME DESCRIPTION 1, 7, 8 DNC Do Not Connect 2 VIN Input Voltage Connection 3 COMP 4 GND Ground Connection 5 TRIM Voltage Reference Trim input 6 VOUT Voltage Reference Output Compensation and Noise Reduction Capacitor Ordering Information PART NUMBER (Notes 1, 2, 3) PART MARKING VOUT OPTION (V) GRADE (%) TEMPCO (ppm/°C) TEMP RANGE (°C) PACKAGE TAPE & REEL (Pb-Free) PKG. DWG. # ISL21090BFB812Z-TK 21090 BFZ12 1.25 0.03 7 -40 to +125 8 Ld SOIC M8.15E ISL21090BFB825Z-TK 21090 BFZ25 2.5 0.02 7 -40 to +125 8 Ld SOIC M8.15E ISL21090BFB850Z-TK 21090 BFZ50 5.0 0.025 7 -40 to +125 8 Ld SOIC M8.15E ISL21090BFB875Z-TK 21090 BFZ75 7.5 0.035 7 -40 to +125 8 Ld SOIC M8.15E NOTES: 1. Please refer to TB347 for details on reel specifications. 2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. 3. For Moisture Sensitivity Level (MSL), please see device information page for ISL21090B12, ISL21090B25, ISL21090B50, ISL21090B75. For more information on MSL please see Tech Brief TB363. FN6993 Rev 5.00 February 27, 2013 Page 2 of 20 ISL21090 Absolute Maximum Ratings Thermal Information Max Voltage VIN to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to +40V VOUT to GND (10s). . . . . . . . . . . . . . . . . . . . . . . . . . . . .-0.5V to VOUT + 0.5V Voltage on any Pin to Ground . . . . . . . . . . . . . . . . . . . -0.5V to +VOUT + 0.5V Voltage on DNC pins . . . . . . . . . . . . . . . No connections permitted to these pins Input Voltage Slew Rate (Max) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.1V/µs ESD Ratings Human Body Model (Tested per JESD22-A114F) . . . . . . . . . . . . . . . . 3kV Machine Model (Tested per JESD22-A115-C) . . . . . . . . . . . . . . . . . . 200V Charged Device Model (Tested per JESD22-C110D) . . . . . . . . . . . . . 2kV Latch-up (Tested per JESD-78B; Class 2, Level A) . . . . . . . . . . . . . . . at +125°C Thermal Resistance (Typical) JA (°C/W) JC (°C/W) 8 Ld SOIC Package (Notes 4, 5) . . . . . . . . . 110 60 Continuous Power Dissipation (TA = +125°C) . . . . . . . . . . . . . . . . .217mW Maximum Junction Temperature (TJMAX). . . . . . . . . . . . . . . . . . . . . .+150°C Storage Temperature Range. . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C Recommended Operating Conditions Temperature Range (Industrial) . . . . . . . . . . . . . . . . . . . . .-40°C to +125°C CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and result in failures not covered by warranty. NOTES: 4. JA is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details. 5. For JC, the “case temp” location is taken at the package top center. 6. Post-reflow drift for the ISL21090 devices can exceed 100µV to 1.0mV based on experimental results with devices on FR4 double sided boards. The system engineer must take this into account when considering the reference voltage after assembly. Electrical Specifications VIN = 5V (1.25V option), IOUT = 0, CL = 0.1µF and CC = 0.01µF, unless otherwise specified. Boldface limits apply over the operating temperature range, -40°C to +125°C. PARAMETER DESCRIPTION CONDITIONS MIN (Note 7) TYP VOUT Output Voltage VIN = 5V, VOA VOUT Accuracy @ TA = +25°C (Note 6) VOUT = 1.25V Output Voltage Temperature Coefficient (Note 8) ISL21090 B grade VIN Input Voltage Range VOUT = 1.25V IIN Supply Current VOUT /VIN Line Regulation VIN = 3.7V to 36V, VOUT = 1.25V VOUT/IOUT Load Regulation Sourcing: 0mA ≤ IOUT ≤ 20mA Dropout Voltage (Note 9) VOUT = 1.25V @ 10mA 1.7 TC VOUT VD MAX (Note 7) 1.25 -0.03 UNIT V +0.03 % 7 ppm/°C 36 V 0.750 1.28 mA 6 17 ppm/V 2.5 17 ppm/mA 2.15 V 3.7 ISC+ Short Circuit Current TA = +25°C, VOUT tied to GND 53 mA tR Turn-on Settling Time 90% of final value, CL = 1.0µF, CC = open 150 µs Ripple Rejection f = 120Hz 90 dB Voltage Noise 0.1Hz  f 10Hz, VOUT = 1.25V 1.0 µVP-P Vn Broadband Voltage Noise 10Hz  f 1kHz, VOUT = 1.25V 1.2 µVRMS en Noise Voltage Density f = 1kHz, VOUT = 1.25V 25 nV/Hz Long Term Stability TA = +25°C 20 ppm enp-p VOUT/t FN6993 Rev 5.00 February 27, 2013 Page 3 of 20 ISL21090 Electrical Specifications temperature range, -40°C to +125°C. PARAMETER VIN = 5V (2.5V option), IOUT = 0 unless otherwise specified. Boldface limits apply over the operating DESCRIPTION CONDITIONS VOUT Output Voltage VIN = 5V VOA VOUT Accuracy @ TA = +25°C All VOUT options Output Voltage Temperature Coefficient ISL21090 B grade VIN Input Voltage Range VOUT = 2.5V IIN Supply Current VOUT /VIN Line Regulation VOUT/IOUT Load Regulation TC VOUT MIN (Note 7) TYP MAX (Note 7) UNIT 2.5 -0.02 V +0.02 % 7 ppm/°C 36 V 0.930 1.28 mA VIN = 3.7V to 36V, VOUT = 2.5V 8 18 ppm/V Sourcing: 0mA ≤ IOUT ≤ 20mA 2.5 17 ppm/mA Sinking: -10mA ≤ IOUT ≤ 0mA 2.5 17 ppm/mA 1.7 V 3.7 VD Dropout Voltage (Note 9) VOUT = 2.5V @ 10mA 1.1 ISC+ Short Circuit Current TA = +25°C, VOUT tied to GND 55 mA ISC- Short Circuit Current TA = +25°C, VOUT tied to VIN -61 mA tR Turn-on Settling Time 90% of final value, CL = 1.0µF, CC = open 150 µs Ripple Rejection f = 120Hz 90 dB Noise Voltage 0.1Hz  f 10Hz, VOUT = 2.5V 1.9 µVP-P Vn Broadband Voltage Noise 10Hz  f 1kHz, VOUT = 2.5V 1.6 µVRMS en Noise Voltage Density f = 1kHz, VOUT = 2.5V 50 nV/Hz Long Term Stability TA = +25°C 20 ppm enp-p VOUT/t Electrical Specifications temperature range, -40°C to +125°C. PARAMETER VIN = 10V (5.0V option), IOUT = 0 unless otherwise specified. Boldface limits apply over the operating DESCRIPTION CONDITIONS VOUT Output Voltage VIN = 10V, VOA VOUT Accuracy @ TA = +25°C (Note 6) VOUT = 5.0V TC VOUT MIN (Note 7) TYP MAX (Note 7) 5.0 0.025 UNIT V 0.025 % 7 ppm/°C 36 V 0.930 1.33 mA 8 18 ppm/V Output Voltage Temperature Coefficient ISL21090 B grade (Note 8) VIN Input Voltage Range IIN Supply Current VOUT /VIN Line Regulation VIN = 7V to 36V, VOUT = 5.0V VOUT/IOUT Load Regulation Sourcing: 0mA ≤ IOUT ≤ 20mA 2.5 17 ppm/mA Sinking: -10mA ≤ IOUT ≤ 0mA 2.5 17 ppm/mA 1.7 V VOUT = 5.0V 7 VD Dropout Voltage (Note 9) VOUT = 5.0V @ 10mA 1.1 ISC+ Short Circuit Current TA = +25°C, VOUT tied to GND 61 mA ISC- Short Circuit Current TA = +25°C, VOUT tied to VIN -75 mA tR Turn-on Settling Time 90% of final value, CL = 1.0µF, CC = open 150 µs Ripple Rejection f = 120Hz 90 dB Output Voltage Noise 0.1Hz  f 10Hz, VOUT = 5.0V 4.2 µVP-P Vn Broadband Voltage Noise 10Hz  f 1kHz, VOUT = 5.0V 3.2 µVRMS en Noise Voltage Density f = 1kHz, VOUT = 5.0V 100 nV/Hz Long Term Stability TA = +25°C 20 ppm enp-p VOUT/t FN6993 Rev 5.00 February 27, 2013 Page 4 of 20 ISL21090 Electrical Specifications temperature range, -40°C to +125°C. PARAMETER VIN = 15V (7.5V option), IOUT = 0 unless otherwise specified. Boldface limits apply over the operating DESCRIPTION CONDITIONS VOUT Output Voltage VIN = 15V, VOA VOUT Accuracy @ TA = +25°C (Note 6) VOUT = 7.5V Output Voltage Temperature Coefficient (Note 8) ISL21090 B grade VIN Input Voltage Range VOUT = 7.5V IIN Supply Current VOUT /VIN Line Regulation VOUT/IOUT Load Regulation TC VOUT VD MIN (Note 7) TYP MAX (Note 7) UNIT 7.5 0.035 V 0.035 % 7 ppm/°C 36 V 0.940 1.30 mA VIN = 9V to 36V, VOUT = 7.5V 2.3 18 ppm/V Sourcing: 0mA ≤ IOUT ≤ 20mA 2.5 17 ppm/mA Sinking: -10mA ≤ IOUT ≤ 0mA 9 17 ppm/mA 1.06 1.8 V 9 Dropout Voltage (Note 9) VOUT = 7.5V @ 10mA ISC+ Short Circuit Current TA = +25°C, VOUT tied to GND 56 mA ISC- Short Circuit Current TA = +25°C, VOUT tied to VIN -69 mA tR Turn-on Settling Time 90% of final value, CL = 1.0µF, CC = open 150 µs Ripple Rejection f = 120Hz 90 dB Output Voltage Noise 0.1Hz  f 10Hz, VOUT = 7.5V 6.2 µVP-P Vn Broadband Voltage Noise 10Hz  f 1kHz, VOUT = 7.5V 4.8 µVRMS en Noise Voltage Density f = 1kHz, VOUT = 7.5V 150 nV/Hz Long Term Stability TA = +25°C 20 ppm enp-p VOUT/t NOTES: 7. Compliance to datasheet limits is assured by one or more methods: production test, characterization and/or design. 8. Over the specified temperature range. Temperature coefficient is measured by the box method whereby the change in VOUT is divided by the temperature range; in this case, -40°C to +125°C = +165°C. 9. Dropout Voltage is the minimum VIN - VOUT differential voltage measured at the point where VOUT drops 1mV from VIN = nominal at TA = +25°C. FN6993 Rev 5.00 February 27, 2013 Page 5 of 20 ISL21090 Typical Performance Curves (ISL21090-1.25V) 900 1200 850 1100 1000 UNIT 1 700 +125°C 900 UNIT 2 750 IIN (µA) IIN (µA) 800 UNIT 3 650 +25°C 800 700 600 600 500 550 3.7 400 3.7 8.7 13.7 18.7 23.7 VIN (V) 28.7 33.7 -40°C 13.7 18.7 33.7 1.2503 1.2502 1.2502 1.2501 VOUT (V) UNIT 1 1.2501 1.2500 UNIT 3 1.2499 UNIT 2 1.2498 +25°C 1.2500 1.2499 1.2498 -40°C 1.2497 +125°C 1.2496 1.2497 1.2495 1.2496 3.7 8.7 13.7 18.7 23.7 28.7 33.7 38.7 1.2494 3.7 8.7 13.7 18.7 FIGURE 5. LINE REGULATION, THREE UNITS 28.7 33.7 FIGURE 6. LINE REGULATION, THREE TEMPERATURES 3 2.0 2 1.5 AMPLITUDE (mV) 1 CL = 10nF 0 23.7 VIN (V) VIN (V) AMPLITUDE (mV) 28.7 FIGURE 4. IIN vs VIN, THREE TEMPERATURES 1.2503 -1 -2 -3 -4 23.7 VIN (V) FIGURE 3. IIN vs VIN, THREE UNITS VOUT (V) 8.7 1.0 0.5 CL = 100nF 0 -0.5 -1.0 -1.5 -2.0 0 10 20 30 40 50 60 70 80 90 100 TIME (µs) FIGURE 7. LINE TRANSIENT WITH 10nF LOAD (VIN = ±500mV) FN6993 Rev 5.00 February 27, 2013 0 10 20 30 40 50 60 70 80 90 100 TIME (µs) FIGURE 8. LINE TRANSIENT WITH 100nF LOAD (VIN = ±500mV) Page 6 of 20 ISL21090 Typical Performance Curves (ISL21090-1.25V) (Continued) 40 30 32 16 AMPLITUDE (mV) 24 VOUT (PPM) 100nF 20 +25°C +125°C 8 0 -8 -16 10 0 -10 -20 -40°C -24 -25 -20 -15 -10 SOURCING ILOAD (mA) 1µF -5 -30 0 0 6 5 5 VOUT (V) VOUT (V) 2 1000 1200 3 2 1 1 CL = 0.1µF 0 0 50 CL = 1µF 0 -1 100 150 200 250 300 350 400 450 500 550 0 50 100 150 200 250 300 350 400 450 500 550 TIME (µs) TIME (µs) FIGURE 11. TURN ON TIME WITH 0.1µF 100 FIGURE 12. TURN ON TIME WITH 1µF 0 CL = 1nF 100nF CL = 10nF 10 -20 1 -40 PSRR (dB) ZOUT (Ω) 800 VIN 4 VIN 3 0.1 CL = 10µF 0.01 CL = 1µF 0.001 0.0001 600 FIGURE 10. LOAD TRANSIENT (ILOAD = ±1mA) 6 -1 400 TIME (µs) FIGURE 9. LOAD REGULATION, THREE TEMPERATURE 4 200 100 1k 10k 100k 1M FREQUENCY (Hz) FIGURE 13. ZOUT vs FREQUENCY (COMP = 0.01µF) FN6993 Rev 5.00 February 27, 2013 -80 -100 CL = 100nF 10 1µF -60 10M -120 10 100 1k 10k 100k FREQUENCY (Hz) 1M 10M FIGURE 14. PSRR AT DIFFERENT CAPACITIVE LOADS Page 7 of 20 ISL21090 Typical Performance Curves (ISL21090-1.25V) (Continued) -30 X = 1s/DIV Y = 0.5µV/DIV CURRENT (mA) -35 +125°C -40 -45 +25°C -50 -55 -40°C -60 -65 3.7 8.7 13.7 18.7 23.7 28.7 33.7 VIN (V) FIGURE 15. SHORT CIRCUIT TO GND FIGURE 16. VOUT vs NOISE, 0.1Hz TO 10Hz 1.2502 +25°C 1.2500 VOUT (V) 1.2498 -40°C 1.2496 1.2494 1.2492 +85°C 1.2490 3.7 8.7 13.7 18.7 23.7 28.7 33.7 VIN (V) FIGURE 17. DROPOUT WITH -10mA LOAD FN6993 Rev 5.00 February 27, 2013 Page 8 of 20 ISL21090 Typical Performance Curves (ISL21090-2.5) 1300 1000 1200 980 UNIT 3 1100 IIN (µA) IIN (µA) 960 940 UNIT 1 920 900 800 900 UNIT 2 700 19 600 4 880 4 9 14 24 VIN (V) 29 34 39 FIGURE 18. IIN vs VIN, THREE UNITS -40°C 9 14 19 34 39 +25°C 2.500000 2.499800 VOUT (V) 2.500190 2.500090 2.499990 UNIT 2 UNIT 3 2.499890 2.499600 +125°C 2.499400 -40°C 2.499200 2.499000 2.499790 2.499690 3 6 9 12 15 18 21 24 27 30 33 36 2.498800 4 39 9 14 19 VIN (V) FIGURE 20. LINE REGULATION, THREE UNITS 30 30 20 20 10 CL = 1nF 0 24 VIN (V) 29 34 39 FIGURE 21. LINE REGULATION, THREE TEMPERATURES AMPLITUDE (mV) AMPLITUDE (mV) 29 2.500200 UNIT 1 2.500290 -10 10 CL = 100nF 0 -10 -20 -20 -30 24 VIN (V) FIGURE 19. IIN vs VIN, THREE TEMPERATURES 2.500390 VOUT (V) +125°C +25°C 1000 0 10 20 30 40 50 60 TIME (µs) 70 80 90 100 FIGURE 22. LINE TRANSIENT WITH 1nF LOAD (VIN = ±500mV) FN6993 Rev 5.00 February 27, 2013 -30 0 10 20 30 40 50 60 70 80 90 100 TIME (µs) FIGURE 23. LINE TRANSIENT WITH 100nF LOAD (VIN = ±500mV) Page 9 of 20 ISL21090 Typical Performance Curves (ISL21090-2.5) (Continued) 6 12 8 4 AMPLITUDE (mV) +25°C VOUT (PPM) 4 0 -40°C -4 -8 +125°C CL = NO LOAD 2 0 -2 CL = 100nF -12 -16 -25 -20 -15 -10 -5 0 5 10 ILOAD (mA) (SOURCING) 15 -6 20 0 20 60 100 120 FIGURE 25. LOAD TRANSIENT (ILOAD = ±1mA) 6 5 5 4 VIN VOUT (V) 3 2 CL = 0.1µF 1 80 TIME (µs) 6 4 VOUT (V) 40 (SINKING) FIGURE 24. LOAD REGULATION, THREE TEMPERATURES VIN 3 2 CL = 1µF 1 0 0 -1 -1 0 50 100 150 200 250 300 350 400 0 50 100 150 TIME (µs) 250 300 350 400 FIGURE 27. TURN-ON TIME WITH 1µF 0 1000 100 -20 CL = NO LOAD CL = 100nF -40 PSRR (dB) CL = 10nF CL = 100nF 10 1 CL = 1nF CL = 10nF -60 CL = 1nF -80 -100 0.1 0.01 10 200 TIME (µs) FIGURE 26. TURN-ON TIME WITH 0.1µF ZOUT () CL = 1µF -4 -120 100 1k 10k 100k FREQUENCY (Hz) FIGURE 28. ZOUT vs FREQUENCY FN6993 Rev 5.00 February 27, 2013 1M 10M -140 10 CL = NO LOAD 100 1k 10k 100k 1M FREQUENCY (Hz) FIGURE 29. PSRR AT DIFFERENT CAPACITIVE LOADS Page 10 of 20 10M ISL21090 -30 90 -35 80 -40°C -40 CURRENT (mA) CURRENT (mA) Typical Performance Curves (ISL21090-2.5) (Continued) +125°C -45 +25°C -50 -55 -40°C -60 -65 3 8 13 70 60 +25°C 50 40 18 23 VIN (V) 28 33 30 38 +125°C 3 8 2.5005 18 23 28 33 38 VIN (V) FIGURE 31. SHORT-CIRCUIT TO VIN FIGURE 30. SHORT-CIRCUIT TO GND 2.5010 13 X = 10s/DIV Y = 1µV/DIV TYPICAL TEMPERATURE COEFFICIENT CURVE FOR 10 UNITS VOUT (V) 2.5000 2.4995 2.4990 2.4985 2.4980 -55 -35 -15 5 25 45 65 85 105 125 145 TEMPERATURE (°C) FIGURE 32. VOUT vs TEMPERATURE, 10 UNITS 2.5000 FIGURE 33. VOUT vs NOISE, 0.1Hz TO 10Hz 50 +25°C 40 2.4998 30 20 +85°C PPM VOUT (V) 2.4996 2.4994 10 0 2.4992 -10 2.4990 -20 -40°C 2.4988 0 5 10 15 20 VIN (V) 25 30 FIGURE 34. DROPOUT WITH -10mA LOAD FN6993 Rev 5.00 February 27, 2013 35 40 -30 0 500 1000 1500 TIME (Hrs) 2000 2500 3000 FIGURE 35. LONG TERM STABILITY Page 11 of 20 ISL21090 Typical Performance Curves (ISL21090-5.0) 1150 1300 1100 1200 UNIT 1 1100 UNIT 2 1000 800 900 7 12 17 22 VIN (V) 27 32 600 7 37 22 VIN (V) 27 32 37 +25°C 5.00050 5.00050 5.00040 5.00000 UNIT 2 4.99950 VOUT (V) 5.00030 VOUT (V) 17 5.00100 UNIT 1 5.00060 5.00020 5.00010 5.00000 4.99900 -40°C 4.99850 4.99800 4.99990 4.99980 7 12 17 22 VIN (V) 27 32 4.99700 37 7 12 17 22 VIN (V) 27 32 37 FIGURE 39. LINE REGULATION, THREE TEMPERATURES 30 20 20 AMPLITUDE (mV) 30 10 CL = 1nF 0 +125°C 4.99750 UNIT 3 FIGURE 38. LINE REGULATION, THREE UNITS AMPLITUDE (mV) 12 FIGURE 37. IIN vs VIN, THREE TEMPERATURES 5.00070 4.99970 -40°C 700 UNIT 3 FIGURE 36. IIN vs VIN, THREE UNITS -10 -20 -30 +25°C 900 950 850 +125°C 1000 IIN (µA) IIN (µA) 1050 10 CL = 100nF 0 -10 -20 0 10 20 30 40 50 60 70 80 90 100 TIME (µs) FIGURE 40. LINE TRANSIENT WITH 1nF LOAD (VIN = ±500mV) FN6993 Rev 5.00 February 27, 2013 -30 0 10 20 30 40 50 60 TIME (µs) 70 80 90 100 FIGURE 41. LINE TRANSIENT WITH 100nF LOAD (VIN = ±500mV) Page 12 of 20 ISL21090 Typical Performance Curves (ISL21090-5.0) (Continued) 10 80 8 +25°C 0 6 AMPLITUDE (mV) VOUT (PPM) 40 -40 -80 -120 -40°C +125°C -160 -200 CL = 100nF 4 CL = 1µF 2 0 -2 -4 -6 -8 -240 -20 -15 (SOURCING) -10 -5 ILOAD (mA) 0 -10 5 10 (SINKING) 0 FIGURE 42. LOAD REGULATION, THREE TEMPERATURES 60 80 140 160 180 200 10 VIN 6 4 CL = 0.1µF 2 VIN 8 VOUT (V) 8 6 4 CL = 1µF 2 0 0 0 50 100 150 200 250 300 350 -2 400 0 50 100 150 FIGURE 44. TURN-ON TIME WITH 0.1µF 250 300 350 400 FIGURE 45. TURN-ON TIME WITH 1µF 0 1000 CL = 0 CL = 1nF -20 100 CL = 0 1 CL = 1nF PSRR (dB) CL = 10nF 10 CL = 100nF 0.1 0.01 200 TIME (µs) TIME (µs) ZOUT () 100 120 TIME (µs) 12 10 VOUT (V) 40 FIGURE 43. LOAD TRANSIENT (ILOAD = ±1mA) 12 -2 20 -40 CL = 100nF -60 CL = 10nF -80 -100 10 100 1k 10k 100k FREQUENCY (Hz) FIGURE 46. ZOUT vs FREQUENCY FN6993 Rev 5.00 February 27, 2013 1M 10M -120 10 100 1k 10k 100k 1M 10M FREQUENCY (Hz) FIGURE 47. PSRR AT DIFFERENT CAPACITIVE LOADS Page 13 of 20 ISL21090 Typical Performance Curves (ISL21090-5.0) (Continued) -20 100 CURRENT (mA) CURRENT (mA) -40 +125°C -50 +25°C -60 -70 -80 -40°C 7 12 80 70 +125°C 50 40 30 17 22 VIN (V) 27 32 20 37 7 12 17 22 VIN (V) 27 32 37 FIGURE 49. SHORT-CIRCUIT TO VIN 5 5.10 4 5.05 3 2 5.00 1 VOUT(V) OUTPUT NOISE VOLTAGE (µV) +25°C 60 FIGURE 48. SHORT-CIRCUIT TO GND 0 -1 4.95 4.90 -2 -3 -40°C +25°C +125°C 4.85 -4 -5 -40°C 90 -30 0 1 2 3 4 5 6 7 8 TIME (s) FIGURE 50. VOUT vs NOISE, 0.1Hz TO 10Hz FN6993 Rev 5.00 February 27, 2013 9 10 4.80 6.00 6.10 6.20 6.30 6.40 6.50 6.60 6.70 6.80 6.90 7.00 VIN (V) FIGURE 51. DROPOUT WITH -10mA LOAD Page 14 of 20 ISL21090 Typical Performance Curves (ISL21090-7.5) 1.4 1.3 1.3 UNIT 1 1.2 1.1 IIN (mA) IIN (mA) 1.2 UNIT 2 1.0 1.1 +25°C +125°C 1.0 9.0 9.0 8.0 UNIT 3 8.0 9 12 15 18 21 24 VIN (V) 27 7.0 30 33 36 FIGURE 52. IIN vs VIN, THREE UNITS 5 2 3 VOUT (PPM) VOUT (PPM) UNIT 2 -1 -2 -3 -4 15 18 21 24 VIN (V) 27 30 33 36 +25°C -1 -3 -5 -7 -40°C +125°C -9 -11 UNIT 3 -5 -13 9 12 15 18 21 24 VIN (V) 27 30 33 -15 36 20 20 AMPLITUDE (mV) 30 10 CL = 1nF -10 -20 -30 12 15 18 21 24 27 30 33 36 FIGURE 55. LINE REGULATION, THREE TEMPERATURES 30 0 9 VIN (V) FIGURE 54. LINE REGULATION, THREE UNITS AMPLITUDE (mV) 12 1 UNIT 1 0 -6 9 FIGURE 53. IIN vs VIN, THREE TEMPERATURES 3 1 -40°C 10 CL = 100nF 0 -10 -20 0 10 20 30 40 50 60 TIME (µs) 70 80 90 100 FIGURE 56. LINE TRANSIENT WITH 1nF LOAD (VIN = ±500mV) FN6993 Rev 5.00 February 27, 2013 -30 0 10 20 30 40 50 60 TIME (µs) 70 80 90 100 FIGURE 57. LINE TRANSIENT WITH 100nF LOAD (VIN = ±500mV) Page 15 of 20 ISL21090 Typical Performance Curves (ISL21090-7.5) (Continued) 200 8 6 100 AMPLITUDE (mV) VOUT (PPM) 150 +25°C 50 0 +125°C -50 -10 CL = 100nF 2 CL = 1µF 0 -2 -4 -6 -40°C -100 -20 -15 (SOURCING) 4 -8 -5 ILOAD (mA) 0 -10 5 10 (SINKING) 0 FIGURE 58. LOAD REGULATION, THREE TEMPERATURES 18 16 16 VOUT (V) VOUT (V) 8 CL = 0.1µF 4 80 140 160 180 200 VIN 10 8 6 CL = 1µF 4 2 2 0 0 -2 -2 0 50 100 150 200 250 300 350 400 0 50 100 150 TIME (µs) FIGURE 60. TURN-ON TIME WITH 0.1µF 0 CL = 1nF PSRR (dB) 1 CL = 0 CL = 100nF 0.1 100 1K 10K 100K FREQUENCY (Hz) FIGURE 62. ZOUT vs FREQUENCY FN6993 Rev 5.00 February 27, 2013 300 350 400 CL = 1nF -20 CL = 10nF CL = 10nF 10 0.01 10 200 250 TIME (µs) FIGURE 61. TURN-ON TIME WITH 1µF 100 ZOUT () 100 120 TIME (µs) 12 10 6 60 14 VIN 12 40 FIGURE 59. LOAD TRANSIENT (ILOAD = ±1mA) 18 14 20 -40 -60 CL = 100nF CL = 0 -80 -100 1M 10M -120 10 100 1K 10K 100K 1M FREQUENCY (Hz) FIGURE 63. PSRR AT DIFFERENT CAPACITIVE LOADS Page 16 of 20 10M ISL21090 Typical Performance Curves (ISL21090-7.5) (Continued) 100 -30 -35 90 -40 80 +125°C -50 +25°C CURRENT (mA) CURRENT(mA) -45 -55 -60 -65 -70 -40°C -75 -80 -40°C 9 12 15 18 21 24 VIN (V) 27 30 33 70 +125°C 50 40 30 36 +25°C 60 9 12 18 21 24 VIN (V) 27 30 33 36 FIGURE 65. SHORT-CIRCUIT TO VIN 5 7.5 4 7.4995 3 7.499 2 7.4985 1 7.498 VOUT(V) OUTPUT NOISE VOLTAGE (µV) FIGURE 64. SHORT-CIRCUIT TO GND 15 0 -1 +25°C 7.4975 7.497 7.4965 -2 -3 7.496 -4 7.4955 7.495 -5 0 1 2 3 4 5 6 TIME (s) 7 8 FIGURE 66. VOUT vs NOISE, 0.1Hz TO 10Hz FN6993 Rev 5.00 February 27, 2013 9 10 -40°C 8.3 8.4 8.5 8.6 8.7 VIN (V) +125°C 8.8 8.9 FIGURE 67. DROPOUT WITH -10mA LOAD Page 17 of 20 9 ISL21090 Device Operation Turn-On Time Precision Bandgap Reference Normal turn-on time is typically 150µs, as shown in Figure 27. The circuit designer must take this into account when looking at power-up delays or sequencing. The ISL21090 uses a bandgap architecture and special trimming circuitry to produce a temperature compensated, precision voltage reference with high input voltage capability and moderate output current drive. Low noise performance is achieved using optimized biasing techniques. Key features for precision low noise portable applications, such as handheld meters and instruments, are supply current (900µA) and noise (0.1Hz to 10Hz bandwidth) 1.0µVP-P to 6.2µVP-P. Data Converters in particular can utilize the ISL21090 as an external voltage reference. Low power DAC and ADC circuits will realize maximum resolution with lowest noise. The device maintains output voltage during conversion cycles with fast response, although it is helpful to add an output capacitor, typically 1μF. In the case of the 1.25V option, a 0.01µF capacitor must be added to the COMP (pin 3) for stabilization purposes, and a minimum of 0.1µF capacitor must be added at the output. Applications Information Board Mounting Considerations For applications requiring the highest accuracy, the board mounting location should be reviewed. The device uses a plastic SOIC package, which subjects the die to mild stresses when the printed circuit (PC) board is heated and cooled, which slightly changes the shape. Because of these die stresses, placing the device in areas subject to slight twisting can cause degradation of reference voltage accuracy. It is normally best to place the device near the edge of a board, or on the shortest side, because the axis of bending is most limited in that location. Mounting the device in a cutout also minimizes flex. Obviously, mounting the device on flexprint or extremely thin PC material will likewise cause loss of reference accuracy. Board Assembly Considerations Some PC board assembly precautions are necessary. Normal output voltage shifts of 100µV to 500µV can be expected with Pb-free reflow profiles or wave solder on multi-layer FR4 PC boards. Precautions should be taken to avoid excessive heat or extended exposure to high reflow or wave solder temperatures. Temperature Coefficient The limits stated for temperature coefficient (Tempco) are governed by the method of measurement. The overwhelming standard for specifying the temperature drift of a reference is to measure the reference voltage at two temperatures, take the total variation, (VHIGH – VLOW), and divide by the temperature extremes of measurement (THIGH – TLOW). The result is divided by the nominal reference voltage (at T = +25°C) and multiplied by 106 to yield ppm/°C. This is the “Box” method for specifying temperature coefficient. Output Voltage Adjustment The output voltage can be adjusted above and below the factory-calibrated value via the trim terminal. The trim terminal is the negative feedback divider point of the output op amp. The positive input of the amplifier is about 1.216V, and in feedback, so will be the trim voltage. The trim terminal has a 5000Ω resistor to ground internally, and in the case of the 2.5V output version, there is a feedback resistor of approximately 5000Ω from VOUT to trim. The suggested method to adjust the output is to connect a very high value external resistor directly to the trim terminal and connect the other end to the wiper of a potentiometer that has a much lower total resistance and whose outer terminals connect to VOUT and ground. If a 1MΩ resistor is connected to trim, the output adjust range will be ±6.3mV. It is important to minimize the capacitance on the trim terminal to preserve output amplifier stability. It is also best to connect the series resistor directly to the trim terminal, to minimize that capacitance and also to minimize noise injection. Small trim adjustments will not disturb the factory-set temperature coefficient of the reference, but trimming near the extreme values can. Noise Performance and Reduction The output noise voltage in a 0.1Hz to 10Hz bandwidth is typically 1.9µVP-P (VOUT = 2.5V). The noise measurement is made with a bandpass filter. The filter is made of a 1-pole high-pass filter, with a corner frequency at 0.1Hz, and a 2-pole low-pass filter, with a corner frequency (3dB) at 9.9Hz, to create a filter with a 9.9Hz bandwidth. Noise in the 10Hz to 1kHz bandwidth is approximately 1.6µVRMS (VOUT = 2.5V), with 0.1µF capacitance on the output. This noise measurement is made with a 2 decade bandpass filter. The filter is made of a 1-pole high-pass filter with a corner frequency at 10Hz of the center frequency, and 1-pole low-pass filter with a corner frequency at 1kHz. Load capacitance up to 10µF can be added but will result in only marginal improvements in output noise and transient response. FN6993 Rev 5.00 February 27, 2013 Page 18 of 20 ISL21090 Revision History The revision history provided is for informational purposes only and is believed to be accurate, but not warranted. Please go to web to make sure you have the latest revision. DATE REVISION CHANGE February 6, 2013 FN6993.5 Electrical Spec Table on page 3 - Noise Voltage Density changed Typ from “35.4” to “25” Removed Sinking: -10mA ≤ IOUT ≤ 0mA and ISC- Short Circuit Current Added Long Term Stability to options 2.5V, 5V and 7.5V on pages 4 and 5 Updated Figure 9 on page 7 by removing ILOAD (mA) and Sinking and x-axis numbering changed from “-25 to 15” to “-25 to 0’. Removed Figure which was titled “Short Circuit to VIN” January 9, 2013 FN6993.4 Added 7.5V option to Ordering Information table on page 2. Added 7.5V option “Electrical Specifications” table to page 5. Added 7.5V Typical Performance Curves section on page 15. August 22, 2012 FN6993.3 Added 5.0V option “Typical Performance Curves” table to page 12. Removed 7.5V and 10V option Electrical Specs May 1, 2012 FN6993.2 Added 5.0V option “Electrical Specifications” table to page 5. Added 7.5V option “Electrical Specifications” table to page 5. Added 10.0V option “Electrical Specifications” table to page 5. March 5, 2012 FN6993.1 Added 1.25V option “Electrical Specifications” table to page 3. Added 1.25V Typical Performance Curves section on page 6. Changed MIN limit for VIN 2.5V option on page 4. June 8, 2011 FN6993.0 Initial Release About Intersil Intersil Corporation is a leader in the design and manufacture of high-performance analog, mixed-signal and power management semiconductors. The company's products address some of the fastest growing markets within the industrial and infrastructure, personal computing and high-end consumer markets. For more information about Intersil or to find out how to become a member of our winning team, visit our website and career page at www.intersil.com. For a complete listing of Applications, Related Documentation and Related Parts, please see the respective product information page. Also, please check the product information page to ensure that you have the most updated datasheet: ISL21090B12, ISL21090B25, ISL21090B50, ISL21090B75 To report errors or suggestions for this datasheet, please go to: www.intersil.com/askourstaff Reliability reports are available from our website at: http://rel.intersil.com/reports/search.php © Copyright Intersil Americas LLC 2011-2013. All Rights Reserved. All trademarks and registered trademarks are the property of their respective owners. For additional products, see www.intersil.com/en/products.html Intersil products are manufactured, assembled and tested utilizing ISO9001 quality systems as noted in the quality certifications found at www.intersil.com/en/support/qualandreliability.html Intersil products are sold by description only. Intersil may modify the circuit design and/or specifications of products at any time without notice, provided that such modification does not, in Intersil's sole judgment, affect the form, fit or function of the product. Accordingly, the reader is cautioned to verify that datasheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries 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 Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com FN6993 Rev 5.00 February 27, 2013 Page 19 of 20 ISL21090 Package Outline Drawing M8.15E 8 LEAD NARROW BODY SMALL OUTLINE PLASTIC PACKAGE Rev 0, 08/09 4 4.90 ± 0.10 A DETAIL "A" 0.22 ± 0.03 B 6.0 ± 0.20 3.90 ± 0.10 4 PIN NO.1 ID MARK 5 (0.35) x 45° 4° ± 4° 0.43 ± 0.076 1.27 0.25 M C A B SIDE VIEW “B” TOP VIEW 1.75 MAX 1.45 ± 0.1 0.25 GAUGE PLANE C SEATING PLANE 0.10 C 0.175 ± 0.075 SIDE VIEW “A 0.63 ±0.23 DETAIL "A" (1.27) (0.60) NOTES: (1.50) (5.40) 1. Dimensions are in millimeters. Dimensions in ( ) for Reference Only. 2. Dimensioning and tolerancing conform to AMSE Y14.5m-1994. 3. Unless otherwise specified, tolerance : Decimal ± 0.05 4. Dimension does not include interlead flash or protrusions. Interlead flash or protrusions shall not exceed 0.25mm per side. 5. The pin #1 identifier may be either a mold or mark feature. 6. Reference to JEDEC MS-012. TYPICAL RECOMMENDED LAND PATTERN FN6993 Rev 5.00 February 27, 2013 Page 20 of 20