ISL60002 ® Data Sheet August 1, 2006 Precision Low Power FGA™ Voltage References FN8082.7 Features • Reference Voltages . . . 1.024V, 1.2V, 1.25V, 1.8V, 2.048V, 2.5V and 3.3V The ISL60002 FGA™ voltage references are very high precision analog voltage references fabricated in Intersil's proprietary Floating Gate Analog technology and feature low supply voltage operation at ultra-low 400nA operating current. • Absolute Initial Accuracy Options. . . . . . ±1.0mV, ±2.5mV, and ±5.0mV • Supply Voltage Range - ISL60002-10, -11, -12, -18, -20, -25 . . . . . . 2.7V to 5.5V - ISL60002-33 . . . . . . . . . . . . . . . . . . . . . . . . 3.5V to 5.5V Additional features include guaranteed initial accuracy as low as ±1.0mV, @ 20ppm/°C temperature coefficient and long-term stability of <<10ppm/√1kHrs. The initial accuracy and thermal stability performance of the ISL60002 family plus the low supply voltage and 400nA power consumption eliminates the need to compromise thermal stability for reduced power consumption making it an ideal companion to high resolution, low power data conversion systems. • Ultra-Low Supply Current. . . . . . . . . . . . . . . . . . 350nA typ • Low 20ppm/°C Temperature Coefficient • 10ppm/√1kHrs. Long Term Stability • ISOURCE and ISINK = 7mA • ISOURCE and ISINK = 20mA for ISL60002-33 only • ESD Protection. . . . . . . . . . . . . 5kV (Human Body Model) • Standard 3 Ld SOT-23 Packaging • Operating Temperature Range - ISL60002-10, -11, -12, -18, -20, -25 . . . . -40°C to +85°C - ISL60002-33 . . . . . . . . . . . . . . . . . . . . . -40°C to +105°C • Pb-Free Plus Anneal Available (RoHS Compliant) Applications • High Resolution A/Ds and D/As • Digital Meters • Bar Code Scanners • Mobile Communications • PDA’s and Notebooks • Medical Systems Typical Application VIN = +3.0V 0.1µF VIN 10µF VOUT 0.001µF * ISL60002 GND REF IN Serial Bus ENABLE SCK SDAT 16 TO 24-BIT A/D CONVERTER *Also see Figure 101 in Applications Information. 1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc. FGA is a trademark of Intersil Corporation. Copyright Intersil Americas Inc. 2004-2006. All Rights Reserved All other trademarks mentioned are the property of their respective owners. ISL60002 Table of Contents Typical Application......................................................................................................................................................................... 1 Pinout ............................................................................................................................................................................................ 3 Pin Descriptions ............................................................................................................................................................................ 3 Ordering Information ..................................................................................................................................................................... 3 Absolute Maximum Ratings........................................................................................................................................................... 4 Electrical Specifications ISL60002-10, VOUT = 1.024V .................................................................................................................................................. 4 ISL60002-11, VOUT = 1.200V .................................................................................................................................................. 4 ISL60002-12, VOUT = 1.250V .................................................................................................................................................. 4 ISL60002-18, VOUT = 1.800V .................................................................................................................................................. 5 ISL60002-20, VOUT = 2.048V .................................................................................................................................................. 5 ISL60002-25, VOUT = 2.500V .................................................................................................................................................. 5 ISL60002-33, VOUT = 3.300V .................................................................................................................................................. 5 Common Electrical Specifications ISL60002 -10, -11, -12, -18, -20, and -25 ................................................................................................................................. 6 Typical Performance Characteristic Curves ISL60002, VOUT = 1.024V ....................................................................................................................................................... 7 ISL60002, VOUT = 1.20V ......................................................................................................................................................... 10 ISL60002, VOUT = 1.25V ......................................................................................................................................................... 13 ISL60002, VOUT = 1.8V ........................................................................................................................................................... 16 ISL60002, VOUT = 2.048V ....................................................................................................................................................... 19 ISL60002, VOUT = 2.50V ......................................................................................................................................................... 22 ISL60002, VOUT = 3.3V ........................................................................................................................................................... 25 Applications Information ................................................................................................................................................................ 28 Typical Application Circuits............................................................................................................................................................ 30 Packaging Information................................................................................................................................................................... 31 2 FN8082.7 August 1, 2006 ISL60002 Pinout Pin Descriptions ISL60002 (3 LD SOT-23) TOP VIEW PIN NAME GND DESCRIPTION Ground Connection VIN 1 VIN 3 GND VOUT Power Supply Input Connection Voltage Reference Output Connection VOUT 2 Ordering Information PART MARKING PART NUMBER VOUT (V) GRADE TEMP. RANGE (°C) PACKAGE ISL60002BIH310Z-TK (Note) DFB 1.024 ±1.0mV, 20ppm/°C -40 to +85 3 Ld SOT-23 (Pb-free) ISL60002CIH310Z-TK (Note) DFC 1.024 ±2.5mV, 20ppm/°C -40 to +85 3 Ld SOT-23 (Pb-free) ISL60002DIH310Z-TK (Note) DFD 1.024 ±5.0mV, 20ppm/°C -40 to +85 3 Ld SOT-23 (Pb-free) ISL60002BIH311Z-TK (Note) APM 1.200 ±1.0mV, 20ppm/°C -40 to +85 3 Ld SOT-23 (Pb-free) ISL60002CIH311Z-TK (Note) AOH 1.200 ±2.5mV, 20ppm/°C -40 to +85 3 Ld SOT-23 (Pb-free) ISL60002DIH311Z-TK (Note) AOY 1.200 ±5.0mV, 20ppm/°C -40 to +85 3 Ld SOT-23 (Pb-free) ISL60002BIH312-TK AIL 1.250 ±1.0mV, 20ppm/°C -40 to +85 3 Ld SOT-23 ISL60002BIH312Z-TK (Note) AOM 1.250 ±1.0mV, 20ppm/°C -40 to +85 3 Ld SOT-23 (Pb-free) ISL60002CIH312-TK AIN 1.250 ±2.5mV, 20ppm/°C -40 to +85 3 Ld SOT-23 ISL60002CIH312Z-TK (Note) AOS 1.250 ±2.5mV, 20ppm/°C -40 to +85 3 Ld SOT-23 (Pb-free) ISL60002DIH312-TK AIP 1.250 ±5.0mV, 20ppm/°C -40 to +85 3 Ld SOT-23 ISL60002DIH312Z-TK (Note) APA 1.250 ±5.0mV, 20ppm/°C -40 to +85 3 Ld SOT-23 (Pb-free) ISL60002BIH318Z-TK (Note) DEO 1.800 ±1.0mV, 20ppm/°C -40 to +85 3 Ld SOT-23 (Pb-free) ISL60002CIH318Z-TK (Note) DEP 1.800 ±2.5mV, 20ppm/°C -40 to +85 3 Ld SOT-23 (Pb-free) ISL60002DIH318Z-TK (Note) DEQ 1.800 ±5.0mV, 20ppm/°C -40 to +85 3 Ld SOT-23 (Pb-free) ISL60002BIH320Z-TK (Note) DEY 2.048 ±1.0mV, 20ppm/°C -40 to +85 3 Ld SOT-23 (Pb-free) ISL60002CIH320Z-TK (Note) DEZ 2.048 ±2.5mV, 20ppm/°C -40 to +85 3 Ld SOT-23 (Pb-free) ISL60002DIH320Z-TK (Note) DFA 2.048 ±5.0mV, 20ppm/°C -40 to +85 3 Ld SOT-23 (Pb-free) ISL60002BIH325-TK AIK 2.500 ±1.0mV, 20ppm/°C -40 to +85 3 Ld SOT-23 ISL60002BIH325Z-TK (Note) AON 2.500 ±1.0mV, 20ppm/°C -40 to +85 3 Ld SOT-23 (Pb-free) ISL60002CIH325-TK AIM 2.500 ±2.5mV, 20ppm/°C -40 to +85 3 Ld SOT-23 ISL60002CIH325Z-TK (Note) AOT 2.500 ±2.5mV, 20ppm/°C -40 to +85 3 Ld SOT-23 (Pb-free) ISL60002DIH325-TK AIO 2.500 ±5.0mV, 20ppm/°C -40 to +85 3 Ld SOT-23 ISL60002DIH325Z-TK (Note) APB 2.500V ±5.0mV, 20ppm/°C -40 to +85 3 Ld SOT-23 (Pb-free) ISL60002BAH333Z-TK (Note) AOP 3.300V ±1.0mV, 20ppm/°C -40 to +105 3 Ld SOT-23 (Pb-free) ISL60002CAH333Z-TK (Note) AOU 3.300V ±2.5mV, 20ppm/°C -40 to +105 3 Ld SOT-23 (Pb-free) ISL60002DAH333Z-TK (Note) APC 3.300V ±5.0mV, 20ppm/°C -40 to +105 3 Ld SOT-23 (Pb-free) *Add "TK" suffix for tape and reel. NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate termination finish, which are 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 FN8082.7 August 1, 2006 ISL60002 Absolute Maximum Ratings Recommended Operating Conditions Storage Temperature Range . . . . . . . . . . . . . . . . . -65°C to + 150°C Max Voltage VIN to Gnd. . . . . . . . . . . . . . . . . . . . . . . -0.5V to +6.5V Max Voltage VOUT to Gnd*: ISL60002, VOUT = 1.25V. . . . . . . . . . . . . . . . . . . . . -0.5V to +2.25V ISL60002, VOUT = 2.50V. . . . . . . . . . . . . . . . . . . . . -0.5V to +3.50V Voltage on “DNC” pins . . . . No connections permitted to these pins. Lead Temperature, Soldering*(Note 5) . . . . . . . . . . . . . . . . . +225°C *Maximum duration = 10s Temperature Range (Industrial) . . . . . . . . . . . . . . . . .-40°C to +85°C Temperature Range (3.3V version) . . . . . . . . . . . . .-40°C to +105°C ESD Ratings MIL-STD-883, Method 3014. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .≥5kV CAUTION: Absolute Maximum Ratings are limits which may result in impaired reliability and/or permanent damage to the device. These are stress ratings provided for information only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification are not implied. For guaranteed specifications and test conditions, see Electrical Specifications. The guaranteed specifications apply only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under the listed test conditions. Electrical Specifications ISL60002-10, VOUT = 1.024V (Additional specifications on page 6, “Common Electrical Specifications”) Operating Conditions: VIN = 3.0V, IOUT = 0mA, COUT = 0.001µF, TA = -40 to +85°C, unless otherwise specified. SYMBOL VOUT VOA VIN PARAMETER CONDITIONS MIN Output Voltage VOUT Accuracy (Note 5) TYP MAX 1.024 UNITS V TA = +25°C ISL60002B10 -1.0 +1.0 mV ISL60002C10 -2.5 +2.5 mV ISL60002D10 -5.0 +5.0 mV 2.7 5.5 V Input Voltage Range Electrical Specifications ISL60002-11, VOUT = 1.200V (Additional specifications on page 6, “Common Electrical Specifications”) Operating Conditions: VIN = 3.0V, IOUT = 0mA, COUT = 0.001µF, TA = -40 to +85°C, unless otherwise specified. SYMBOL VOUT VOA VIN PARAMETER CONDITIONS MIN Output Voltage VOUT Accuracy (Note 5) TYP MAX 1.200 UNITS V TA = +25°C ISL60002B11 -1.0 +1.0 mV ISL60002C11 -2.5 +2.5 mV ISL60002D11 -5.0 +5.0 mV 2.7 5.5 V Input Voltage Range Electrical Specifications ISL60002-12, VOUT = 1.250V (Additional specifications on page 6, “Common Electrical Specifications”) Operating Conditions: VIN = 3.0V, IOUT = 0mA, COUT = 0.001µF, TA = -40 to +85°C, unless otherwise specified. SYMBOL VOUT VOA VIN PARAMETER CONDITIONS MIN Output Voltage VOUT Accuracy (Note 5) Input Voltage Range 4 TYP MAX 1.250 UNITS V TA = +25°C ISL60002B12 -1.0 +1.0 mV ISL60002C12 -2.5 +2.5 mV ISL60002D12 -5.0 +5.0 mV 2.7 5.5 V FN8082.7 August 1, 2006 ISL60002 Electrical Specifications ISL60002-18, VOUT = 1.800V (Additional specifications on page 6, “Common Electrical Specifications”) Operating Conditions: VIN = 3.0V, IOUT = 0mA, COUT = 0.001µF, TA = -40 to +85°C, unless otherwise specified. SYMBOL VOUT VOA VIN PARAMETER CONDITIONS MIN Output Voltage VOUT Accuracy (Note 5) TYP MAX 1.800 UNITS V TA = +25°C ISL60002B18 -1.0 +1.0 mV ISL60002C18 -2.5 +2.5 mV ISL60002D18 -5.0 +5.0 mV 2.7 5.5 V Input Voltage Range Electrical Specifications ISL60002-20, VOUT = 2.048V (Additional specifications on page 6, “Common Electrical Specifications”) Operating Conditions: VIN = 3.0V, IOUT = 0mA, COUT = 0.001µF, TA = -40 to +85°C, unless otherwise specified. SYMBOL VOUT VOA VIN PARAMETER CONDITIONS MIN Output Voltage VOUT Accuracy (Note 5) TYP MAX 2.048 UNITS V TA = +25°C ISL60002B20 -1.0 +1.0 mV ISL60002C20 -2.5 +2.5 mV ISL60002D20 -5.0 +5.0 mV 2.7 5.5 V Input Voltage Range Electrical Specifications ISL60002-25, VOUT = 2.500V (Additional specifications on page 6, “Common Electrical Specifications”) Operating Conditions: VIN = 3.0V, IOUT = 0mA, COUT = 0.001µF, TA = -40 to +85°C, unless otherwise specified. SYMBOL VOUT VOA VIN PARAMETER CONDITIONS MIN Output Voltage VOUT Accuracy (Note 5) TYP MAX 2.500 UNITS V TA = +25°C ISL60002B25 -1.0 +1.0 mV ISL60002C25 -2.5 +2.5 mV ISL60002D25 -5.0 +5.0 mV 2.7 5.5 V MAX UNITS Input Voltage Range Electrical Specifications ISL60002-33, VOUT = 3.300V Operating Conditions: VIN = 5.0V, IOUT = 0mA, COUT = 0.001µF, TA = -40 to +105°C, unless otherwise specified. SYMBOL VOUT VOA TC VOUT PARAMETER CONDITIONS MIN Output Voltage VOUT Accuracy (Note 5) TYP 3.300 V TA = +25°C ISL60002B33 -1.0 1.0 mV ISL60002C33 -2.5 2.5 mV ISL60002D33 -5.0 5.0 mV 20 ppm/°C 5.5 V 350 700 nA Output Voltage Temperature Coefficient (Note 1) VIN Input Voltage Range IIN Supply Current ∆VOUT/∆VIN Line Regulation +3.5V ≤ VIN ≤ +5.5V 80 200 µV/V ∆VOUT/∆IOUT Load Regulation 0mA ≤ ISOURCE ≤ 20mA 25 100 µV/mA -20mA ≤ ISINK ≤ 0mA 50 150 µV/mA 5 3.5 FN8082.7 August 1, 2006 ISL60002 Electrical Specifications ISL60002-33, VOUT = 3.300V (Continued) Operating Conditions: VIN = 5.0V, IOUT = 0mA, COUT = 0.001µF, TA = -40 to +105°C, unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS ∆VOUT/∆t Long Term Stability (Note 4) TA = +25°C 10 ppm/√1 kHrs ∆VOUT/∆TA Thermal Hysteresis (Note 2) ∆TA = +145°C 100 ppm ISC Short Circuit Current (Note 3) TA = +25°C 50 VN Output Voltage Noise 0.1Hz ≤ f ≤ 10Hz 30 80 mA µVP-P Common Electrical Specifications ISL60002 -10, -11, -12, -18, -20, and -25 Operating Conditions: VIN = 3.0V, IOUT = 0mA, COUT = 0.001µF, TA = -40 to +85°C, unless otherwise specified SYMBOL TC VOUT PARAMETER CONDITIONS MIN TYP MAX UNITS 20 ppm/°C 350 900 nA Output Voltage Temperature Coefficient (Note 1) IIN Supply Current ∆VOUT/∆VIN Line Regulation +2.7V ≤ VIN ≤ +5.5V 80 250 µV/V ∆VOUT/∆IOUT Load Regulation 0mA ≤ ISOURCE ≤ 7mA 25 100 µV/mA -7mA ≤ ISINK ≤ 0mA 50 150 µV/mA ∆VOUT/∆t Long Term Stability (Note 4) TA = +25°C 10 ppm/√1 kHrs ∆VOUT/∆TA Thermal Hysteresis (Note 2) ∆TA = +125°C 100 ppm ISC Short Circuit Current (Note 3) TA = +25°C 50 VN Output Voltage Noise 0.1Hz ≤ f ≤ 10Hz 30 80 mA µVP-P NOTES: 1. Over the specified temperature range. Temperature coefficient is measured by the box method whereby the change in VOUT is divided by the temperature range: (-40°C to +85°C = +125°C, or -40°C to +105°C = +145°C for the ISL60002-33). 2. Thermal Hysteresis is the change in VOUT measured @ TA = +25°C after temperature cycling over a specified range, ∆TA, VOUT is read initially at TA = +25°C for the device under test. The device is temperature cycled and a second VOUT measurement is taken at +25°C. The difference between the initial VOUT reading and the second VOUT reading is then expressed in ppm. For ∆TA = +125°C, the device under is cycled from +25°C to +85°C to -40°C to +25°C, and for ∆TA = +145°C, the device under is cycled from +25°C to +105°C to -40°C to +25°C 3. Guaranteed by device characterization and/or correlation to other device tests. 4. FGA™ voltage reference long term drift is a logarithmic characteristic. Changes that occur after the first few hundred hours of operation are significantly smaller with time, asymptotically approaching zero beyond 2000 hours. Because of this decreasing characteristic, long-term drift is specified in ppm/√1kHr. 5. Pb-free manufacturing can result in solder reflow temperatures exceeding the +225°C absolute maximum. Exposing the device to this reflow temperature will not damage it or cause any functional issues and the device will operate normally. The high reflow temperature may result in a permanent shift in output voltage of 500µV to 1.0mV depending on the temperature and exposure time. If possible, using a reduced reflow temperature in production will result in the best possible output voltage accuracy. 6 FN8082.7 August 1, 2006 ISL60002 Typical Performance Characteristic Curves ISL60002, VOUT = 1.024V VIN = 3.0V, IOUT = 0mA, TA = +25°C unless otherwise specified 700 500 600 450 400 403nA 400 327nA 300 +25°C 224nA 300 -40°C 250 200 200 100 150 100 2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5 0 2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5 VIN (V) VIN (V) FIGURE 2. IIN vs VIN OVER TEMPERATURE 150 1.0244 125 1.0242 ∆VO (µV) (NORMALIZED TO VIN = 3.0V) 1.0243 403nA 1.0241 1.024 327nA 1.0239 224nA 1.0238 1.0237 100 75 -40°C 50 25 0 -25 +85°C +25°C -50 -75 -100 -125 1.0236 2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5 VIN (V) -150 2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5 VIN (V) FIGURE 3. LINE REGULATION (3 REPRESENTATIVE UNITS) FIGURE 4. LINE REGULATION OVER TEMPERATURE 1.025 1.0248 UNIT 2 1.0246 1.02442 VOUT (V) VOUT (V) FIGURE 1. IIN vs VIN (3 REPRESENTATIVE UNITS) (NORMALIZED TO 1.024V AT VIN = 3V) +85°C 350 IIN (nA) IIN (nA) 500 UNIT 3 1.0242 1.024 UNIT 1 1.0238 1.0236 1.0234 1.0232 1.023 -40 -15 10 35 60 85 TEMPERATURE (°C) FIGURE 5. VOUT vs TEMPERATURE NORMALIZED to +25°C 7 FN8082.7 August 1, 2006 ISL60002 Typical Performance Characteristic Curves ISL60002, VOUT = 1.024V (Continued) VIN = 3.0V, IOUT = 0mA, TA = +25°C unless otherwise specified CL = 500pF CL = 0pF ∆V = 0.3V 50mV/DIV 50mV/DIV ∆V = 0.3V ∆V = -0.3V ∆V = -0.3V 1ms/DIV 1ms/DIV FIGURE 6. LINE TRANSIENT RESPONSE FIGURE 7. NO LOAD LINE TRANSIENT RESPONSE 0.6 0.5 +85°C 0.4 0.3 ∆VOUT (mV) 0.2 +25°C 0.1 0 -40°C -0.1 -0.2 -0.3 -0.4 -0.5 -0.6 -7 -6 -5 SINKING -4 -3 -2 -1 0 1 2 OUTPUT CURRENT 3 4 5 6 7 SOURCING FIGURE 8. LOAD REGULATION ∆IL = 7mA 500mV/DIV 500mV/DIV ∆IL = 50µA ∆IL = -50µA ∆IL = -7mA 2ms/DIV FIGURE 9. LOAD TRANSIENT RESPONSE 8 1ms/DIV FIGURE 10. LOAD TRANSIENT RESPONSE FN8082.7 August 1, 2006 ISL60002 Typical Performance Characteristic Curves ISL60002, VOUT = 1.024V (Continued) VIN = 3.0V, IOUT = 0mA, TA = +25°C unless otherwise specified 3.2 3.2 2.8 2.4 VIN AND VOUT (V) 2 1.6 402nA 1.2 0.8 327nA 0.4 2 1.6 0 2 0.8 0.4 0 4 327nA 1.2 224nA 6 TIME (ms) 8 10 12 0 2 4 6 TIME (ms) 8 10 12 FIGURE 12. TURN-ON TIME (+25°C) FIGURE 11. TURN-ON TIME (+25°C) 160 NO LOAD 140 120 ZOUT (Ω) VIN AND VOUT (V) 2.4 0 VIN 2.8 VIN 1nF LOAD 100 80 10nF LOAD 60 40 100nF LOAD 20 0 1 10 100 1k FREQUENCY (Hz) 10k 100k FIGURE 13. ZOUT vs FREQUENCY 9 FN8082.7 August 1, 2006 ISL60002 Typical Performance Characteristic Curves ISL60002, VOUT = 1.20V VIN = 3.0V, IOUT = 0mA, TA = +25°C unless otherwise specified 700 500 450 600 IIN (nA) 500 400 340nA 300 270nA IIN (nA) 450nA 400 +85°C 350 +25°C 300 -40°C 250 200 200 100 150 0 2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5 100 2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5 VIN (V) VIN (V) FIGURE 14. IIN vs VIN (3 REPRESENTATIVE UNITS) FIGURE 15. IIN vs VIN OVER TEMPERATURE 1.2006 UNIT 2 1.2004 VOUT (V) 1.2002 1.2 UNIT 3 UNIT 1 1.1998 1.1996 1.1994 -40 -15 10 35 60 85 TEMPERATURE (°C) 1.2001 150 1.20008 125 1.20006 1.20004 340nA 1.20002 1.2 270nA 1.19998 1.19996 1.19994 450nA 1.19992 ∆VO (µV) (NORMALIZED TO VIN = 3.0V) VOUT (V) (NORMAILIZED TO 1.25V at VIN = 3V) FIGURE 16. VOUT vs TEMPERATURE NORMALIZED to +25°C 100 +85°C 75 50 +25°C 25 0 -25 -40°C -50 -75 -100 -125 1.1999 2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5 VIN (V) FIGURE 17. LINE REGULATION (3 REPRESENTATIVE UNITS) 10 -150 2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5 VIN FIGURE 18. LINE REGULATION OVER TEMPERATURE FN8082.7 August 1, 2006 ISL60002 Typical Performance Characteristic Curves ISL60002, VOUT = 1.20V (Continued) VIN = 3.0V, IOUT = 0mA, TA = +25°C unless otherwise specified 100mV/DIV CL = 500pF 100mV/DIV CL = 0nF ∆VIN = 0.30V ∆VIN = -0.30V 1ms/DIV 1ms/DIV FIGURE 19. LINE TRANSIENT RESPONSE FIGURE 20. LINE TRANSIENT RESPONSE 0 0.60 -10 0.50 -20 NO LOAD 0.30 -50 10nF LOAD -60 100nF LOAD -70 ∆VOUT (mV) 1nF LOAD -40 25°C 0.20 0.10 -40°C 0.00 -0.10 -0.20 -80 -0.30 -90 -0.40 -0.50 1 10 100 1k 10k 100k 1M -0.60 -7 FREQUENCY (Hz) -6 -5 -4 SINKING -3 -2 -1 0 1 2 3 OUTPUT CURRENT (mA) 4 5 6 7 SOURCING FIGURE 22. LOAD REGULATION 200mV/DIV FIGURE 21. PSRR vs CAPACITIVE LOAD 50mV/DIV PSRR (dB) 85°C 0.40 -30 -100 ∆VIN = 0.30V ∆VIN = -0.30V IL = -50µA IL = 50µA IL = -7mA 200µs/DIV FIGURE 23. LOAD TRANSIENT RESPONSE 11 IL = 7mA 500µs/DIV FIGURE 24. LOAD TRANSIENT RESPONSE FN8082.7 August 1, 2006 ISL60002 Typical Performance Characteristic Curves ISL60002, VOUT = 1.20V (Continued) VIN = 3.0V, IOUT = 0mA, TA = +25°C unless otherwise specified 160 3.2 1nF LOAD NO LOAD 140 VIN 120 2 100 ZOUT (Ω) 2.4 1.6 1.2 10nF LOAD 80 60 340nA 0.8 40 0.4 20 0 0 2 4 6 TIME (ms) 8 10 0 12 100nF LOAD 1 FIGURE 25. TURN-ON TIME (+25°C) 10 100 1k FREQUENCY (Hz) 10k 100k FIGURE 26. ZOUT vs FREQUENCY 10µV/DIV VIN and VOUT (V) 2.8 10s/DIV FIGURE 27. VOUT NOISE 12 FN8082.7 August 1, 2006 ISL60002 Typical Performance Characteristic Curves ISL60002, VOUT = 1.25V VIN = 3.0V, IOUT = 0mA, TA = +25°C unless otherwise specified 460 700 650 440 UNIT 3 (570nA) 600 +85°C 420 400 500 IIN (nA) IIN (nA) 550 450 UNIT 2 (380nA) 400 +25°C 380 -40°C 360 350 340 UNIT 1 (260nA) 300 320 250 200 2.5 3.0 3.5 4.0 4.5 5.0 300 2.5 5.5 3.0 3.5 4.0 4.5 5.0 5.5 VIN (V) VIN (V) FIGURE 28. IIN vs VIN (3 REPRESENTATIVE UNITS) FIGURE 29. IIN vs VIN OVER TEMPERATURE 1.2510 1.2508 UNIT 2 1.2506 VOUT (V) 1.2504 UNIT 3 1.2502 UNIT 1 1.25 1.2498 1.2496 1.2494 1.2492 1.249 -40 -15 10 35 60 85 TEMPERATURE (°C) FIGURE 30. VOUT vs TEMPERATURE NORMALIZED TO +25°C 50 1.25025 UNIT 1 (260nA) 1.2502 1.25015 UNIT33(570nA) (570nA) UNIT 1.2501 UNIT 2 (380nA) 1.25005 1.25 1.24995 1.2499 2.5 3.0 3.5 4.0 4.5 5.0 5.5 VIN (V) FIGURE 31. LINE REGULATION (3 REPRESENTATIVE UNITS) 13 ∆VO (µV) (NORMALIZED TO VIN = 3.0V) VOUT (V) NORMAILIZED TO 1.25V AT VIN = 3V 1.2503 25 -40°C +25°C +85°C 0 -25 2.5 3.0 3.5 4.0 4.5 5.0 5.5 VIN (V) FIGURE 32. LINE REGULATION OVER TEMPERATURE FN8082.7 August 1, 2006 ISL60002 Typical Performance Characteristic Curves ISL60002, VOUT = 1.25V (Continued) VIN = 3.0V, IOUT = 0mA, TA = +25°C unless otherwise specified CL = 1nF 100mV/DIV 100mV/DIV CL = 0nF 1ms/DIV 1ms/DIV FIGURE 34. LINE TRANSIENT RESPONSE FIGURE 33. LINE TRANSIENT RESPONSE 0.30 0 -10 NO LOAD 0.20 +85°C ∆VOUT (mV) -20 -30 1nF LOAD -40 -50 +25°C 0.10 -40°C 10nF LOAD 0.00 -60 100nF LOAD -70 -80 1 10 100 1k 10k 100k 1M -0.10 -7 FREQUENCY (Hz) -6 -5 -4 SINKING -3 -2 -1 0 1 2 3 OUTPUT CURRENT (mA) 4 5 6 7 SOURCING FIGURE 36. LOAD REGULATION 200mV/DIV FIGURE 35. PSRR vs CAPACITIVE LOAD 50mV/DIV PSRR (dB) ∆VIN = 0.30V ∆VIN = -0.30V ∆VIN = 0.30V ∆VIN = -0.30V IL = 50µA IL = -50µA IL = -7mA 100µs/DIV FIGURE 37. LOAD TRANSIENT RESPONSE 14 IL = 7mA 500µs/DIV FIGURE 38. LOAD TRANSIENT RESPONSE FN8082.7 August 1, 2006 ISL60002 Typical Performance Characteristic Curves ISL60002, VOUT = 1.25V (Continued) VIN = 3.0V, IOUT = 0mA, TA = +25°C unless otherwise specified 180 3.0 NO LOAD VIN 160 120 ZOUT (Ω) 2.0 1.5 1nF LOAD 100 80 60 1.0 380nA 100nF LOAD 40 0.5 0 -1 10nF LOAD 140 20 0 1 3 5 TIME (ms) 7 9 1 11 10 100 1k 10k 1M FREQUENCY (Hz) FIGURE 39. TURN-ON TIME (+25°C) FIGURE 40. ZOUT vs FREQUENCY 10µV/DIV VIN AND VOUT (V) 2.5 10s/DIV FIGURE 41. VOUT NOISE 15 FN8082.7 August 1, 2006 ISL60002 Typical Performance Curves ISL60002, VOUT = 1.8V VIN = 3.0V, IOUT = 0mA, TA = +25°C unless otherwise specified 700 500 600 450 400 500 400 330nA 300 240nA +25°C 300 -40°C 250 200 200 100 150 0 2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5 100 2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5 VIN (V) VIN (V) FIGURE 42. IIN vs VIN (3 REPRESENTATIVE UNITS) FIGURE 43. IIN vs VIN OVER TEMPERATURE 150 1.8002 125 1.80015 1.8001 1.80005 400nA 1.8 240nA 1.79995 330nA 1.7999 1.79985 ∆VO (µV) (NORMALIZED TO VIN = 3.0V) VOUT (µV) (NORMALIZED TO 1.80V AT VIN = 3V) +85°C 350 IIN (nA) IIN (nA) 400nA 100 75 -40°C 50 25 0 -25 +85°C -50 +25°C -75 -100 -125 -150 2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5 1.7998 2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5 VIN (V) VIN (V) FIGURE 44. LINE REGULATION (3 REPRESENTATIVE UNITS) FIGURE 45. LINE REGULATION OVER TEMPERATURE CL = 500pF CL = 500pF ∆V = 0.3V 50mV/DIV 50mV/DIV ∆V = 0.3V ∆V = -0.3V ∆V = -0.3V 1ms/DIV 1ms/DIV FIGURE 46. LINE TRANSIENT RESPONSE FIGURE 47. NO LOAD LINE TRANSIENT RESPONSE 16 FN8082.7 August 1, 2006 ISL60002 Typical Performance Curves ISL60002, VOUT = 1.8V (Continued) VIN = 3.0V, IOUT = 0mA, TA = +25°C unless otherwise specified 0.8 0 +85°C 0.6 -10 NO LOAD -20 +25°C 0.4 -30 PSRR (dB) 0.2 ∆VOUT (mV) -40 1nF LOAD -50 -60 10nF LOAD -70 -80 -40°C 0 -0.2 -0.4 100nF LOAD -0.6 -90 -0.8 -100 1 10 100 1k 10k 100k -10 -8 -6 SINKING 1G FREQUENCY (Hz) -4 -2 0 2 4 OUTPUT CURRENT 6 8 10 SOURCING FIGURE 49. LOAD REGULATION FIGURE 48. PSRR vs CAPACITIVE LOAD ∆IL = 10mA 500mV/DIV 500mV/DIV ∆IL = 50µA ∆IL = -50µA ∆IL = -10mA 2ms/DIV 1ms/DIV FIGURE 50. LOAD TRANSIENT RESPONSE FIGURE 51. LOAD TRANSIENT RESPONSE 3.2 3.2 VIN AND VOUT (V) VIN AND VOUT (V) 2.4 2 400nA 1.6 330nA 1.2 240nA 2.4 2 1.6 0.8 0.4 0.4 0 2 4 6 TIME (ms) 8 FIGURE 52. TURN-ON TIME (+25°C) 17 10 12 330nA 1.2 0.8 0 VIN 2.8 VIN 2.8 0 0 2 4 6 TIME (ms) 8 10 12 FIGURE 53. TURN-ON TIME (+25°C) FN8082.7 August 1, 2006 ISL60002 Typical Performance Curves ISL60002, VOUT = 1.8V (Continued) VIN = 3.0V, IOUT = 0mA, TA = +25°C unless otherwise specified 160 1nF LOAD 140 NO LOAD 100 5mV/DIV ZOUT (Ω) 120 100nF LOAD 80 60 10nF LOAD 40 20 0 1 10 100 1k 10k FREQUENCY (Hz) FIGURE 54. ZOUT vs FREQUENCY 18 100k 1ms/DIV FIGURE 55. VOUT NOISE FN8082.7 August 1, 2006 ISL60002 Typical Performance Curves ISL60002, VOUT = 2.048V VIN = 3.0V, IOUT = 0mA, TA = +25°C unless otherwise specified 700 500 600 450 400 500 +25°C +85°C 405nA IIN (nA) IIN (nA) 350 400 325nA 300 228nA 300 -40°C 250 200 200 100 150 100 2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5 0 2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5 VIN (V) VIN (V) FIGURE 57. IIN vs VIN OVER TEMPERATURE 2.0484 2.0483 2.0482 228nA ∆VO (µV) NORMALIZED TO VIN = 3.0V) VOUT (V) (NORMALIZED TO 2.048V AT VIN = 3V) FIGURE 56. IIN vs VIN (3 REPRESENTATIVE UNITS) 325nA 2.0481 2.048 405nA 2.0479 2.0478 2.0477 2.0476 2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5 200 175 -40°C 150 125 100 +25°C 75 50 +85°C 25 0 -25 -50 -75 -100 -125 -150 2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5 VIN (V) VIN (V) FIGURE 58. LINE REGULATION (3 REPRESENTATIVE UNITS) FIGURE 59. LINE REGULATION OVER TEMPERATURE 2.0484 2.0483 2.0482 VOUT (V) 2.0481 UNIT 2 2.048 2.0479 UNIT 1 2.0478 2.0477 UNIT 3 2.0476 2.0475 2.0474 -40 -15 10 35 60 85 TEMPERATURE (°C) FIGURE 60. VOUT vs TEMPERATURE NORMALIZED to +25°C 19 FN8082.7 August 1, 2006 ISL60002 Typical Performance Curves ISL60002, VOUT = 2.048V (Continued) VIN = 3.0V, IOUT = 0mA, TA = +25°C unless otherwise specified CL = 0pF CL = 500pF ∆V = 0.3V 50mV/DIV 50mV/DIV ∆V = 0.3V ∆V = -0.3V ∆V = -0.3V 1ms/DIV 1ms/DIV FIGURE 61. LINE TRANSIENT RESPONSE FIGURE 62. NO LOAD LINE TRANSIENT RESPONSE 1.4 1.2 1 ∆VOUT (mV) 0.8 0.6 0.4 0.2 +85°C +25°C -40°C 0 -0.2 -0.4 -0.6 -7 -6 -5 SINKING -4 -3 -2 -1 0 1 2 3 OUTPUT CURRENT 4 5 6 7 SOURCING FIGURE 63. LOAD REGULATION ∆IL = 7mA 500mV/DIV 500mV/DIV ∆IL = 50µA ∆IL = -50µA ∆IL = -7mA 2ms/DIV FIGURE 64. LOAD TRANSIENT RESPONSE 20 2ms/DIV FIGURE 65. LOAD TRANSIENT RESPONSE FN8082.7 August 1, 2006 ISL60002 Typical Performance Curves ISL60002, VOUT = 2.048V (Continued) VIN = 3.0V, IOUT = 0mA, TA = +25°C unless otherwise specified 3.2 3.2 VIN 2.8 VIN AND VOUT (V) 2 405nA 325nA 1.6 228nA 1.2 0.8 2.4 2 325nA 1.6 1.2 0.8 0.4 0.4 0 2 4 6 TIME (ms) 8 10 0 12 0 2 FIGURE 66. TURN-ON TIME (+25°C) 4 6 TIME (ms) 8 10 12 FIGURE 67. TURN-ON TIME (+25°C) 160 NO LOAD 140 120 ZOUT (Ω) VIN AND VOUT (V) 2.4 0 VIN 2.8 10nF LOAD 1nF LOAD 100 80 60 40 100nF LOAD 20 0 1 10 100 1k FREQUENCY (Hz) 10k 100k FIGURE 68. ZOUT vs FREQUENCY 21 FN8082.7 August 1, 2006 ISL60002 Typical Performance Characteristic Curves ISL60002, VOUT = 2.50V VIN = 3.0V, IOUT = 0mA, TA = +25°C unless otherwise specified 600 460 550 440 500 420 +85°C UNIT 3 (570nA) 400 IIN (nA) IIN (nA) 450 400 UNIT 2 (380nA) 350 -40°C 360 300 340 UNIT 1 (260nA) 250 200 2.5 +25°C 380 3.0 3.5 320 4.0 4.5 5.0 300 2.5 5.5 3.0 3.5 4.0 4.5 5.0 5.5 VIN (V) VIN (V) FIGURE 69. IIN vs VIN (3 REPRESENTATIVE UNITS) FIGURE 70. IIN vs VIN OVER TEMPERATURE 2.502 2.5015 UNIT 2 UNIT 1 VOUT (V) 2.501 2.5005 UNIT 3 2.5 2.4995 2.499 2.4985 -40 -15 10 35 60 85 TEMPERATURE (°C) FIGURE 71. VOUT vs TEMPERATURE NORMALIZED TO +25°C 200 UNIT 2 2.50012 UNIT 1 ∆VO (µV) 2.50008 2.50004 UNIT 3 2.50000 2.49996 2.49992 2.5 3.0 3.5 4.0 4.5 5.0 5.5 VIN (V) FIGURE 72. LINE REGULATION (3 REPRESENTATIVE UNITS) 22 (NORMALIZED TO VIN = 3.0V) VOUT (V) NORMAILIZED TO 2.50V AT VIN = 3V 2.50016 150 -40°C +25°C 100 +85°C 50 0 -50 -100 2.5 3.0 3.5 4.0 4.5 5.0 5.5 VIN (V) FIGURE 73. LINE REGULATION OVER TEMPERATURE FN8082.7 August 1, 2006 ISL60002 Typical Performance Characteristic Curves ISL60002, VOUT = 2.50V (Continued) VIN = 3.0V, IOUT = 0mA, TA = +25°C unless otherwise specified CL = 1nF 100mV/DIV 100mV/DIV CL = 0nF ∆VIN = 0.30V ∆VIN = -0.30V ∆VIN = 0.30V ∆VIN = -0.30V 1ms/DIV 1ms/DIV FIGURE 74. LINE TRANSIENT RESPONSE FIGURE 75. LINE TRANSIENT RESPONSE 0.20 0 -10 NO LOAD ∆VOUT (mV) +85°C -30 1nF LOAD -40 -50 0.10 +25°C -40°C 0.00 10nF LOAD -60 100nF LOAD -70 -80 1 10 100 1k 10k 100k 1M -0.10 -7 FREQUENCY (Hz) -6 -5 -4 SINKING -3 -2 -1 0 1 2 3 OUTPUT CURRENT (mA) 4 5 6 7 SOURCING FIGURE 77. LOAD REGULATION 200mV/DIV FIGURE 76. PSRR vs CAPACITIVE LOAD 50mV/DIV PSRR (dB) -20 IL = -50µA IL = 50µA IL = -7mA 200µs/DIV FIGURE 78. LOAD TRANSIENT RESPONSE 23 IL = 7mA 500µs/DIV FIGURE 79. LOAD TRANSIENT RESPONSE FN8082.7 August 1, 2006 ISL60002 Typical Performance Characteristic Curves ISL60002, VOUT = 2.50V (Continued) VIN = 3.0V, IOUT = 0mA, TA = +25°C unless otherwise specified 3.5 200 1nF LOAD 3.0 NO LOAD 150 2.5 ZOUT (Ω) 2.0 1.5 10nF LOAD 100 1.0 50 100nF LOAD 0.5 0 -1 1 3 5 7 9 0 11 1 TIME (ms) 10 100 1k 10k 100k FREQUENCY (Hz) FIGURE 80. TURN-ON TIME (+25°C) FIGURE 81. ZOUT vs FREQUENCY 10µV/DIV VIN AND VOUT (V) IIN = 380nA 10s/DIV FIGURE 82. VOUT NOISE 24 FN8082.7 August 1, 2006 ISL60002 Typical Performance Characteristic Curves ISL60002, VOUT = 3.3V VIN = 3.0V, IOUT = 0mA, TA = +25°C unless otherwise specified 400 600 550 380 500 85°C 400 450nA 360 360nA 340 IIN (nA) IIN (nA) 450 350 300 240nA 250 25°C -40°C 320 300 200 280 150 100 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 260 3.5 5.5 3.7 3.9 4.1 4.3 VIN (V) FIGURE 83. IIN vs VIN (3 REPRESENTATIVE UNITS) 4.5 4.7 VIN (V) 4.9 5.1 5.3 5.5 FIGURE 84. IIN vs VIN OVER TEMPERATURE 3.3008 3.3006 UNIT 1 3.3004 UNIT 3 VOUT (V) 3.3002 3.3 UNIT 2 3.2998 3.2996 3.2994 3.2992 3.299 -40 -15 10 35 60 85 TEMPERATURE (°C) 3.3002 150 3.30015 125 ∆VO (µV) (NORMALIZED TO VIN = 5.0V) VOUT (V) (NORMAILIZED TO 3.30V AT VIN =5V) FIGURE 85. VOUT vs TEMPERATURE NORMALIZED TO +25°C 3.3001 3.30005 450nA 3.3 240nA 3.29995 3.2999 360nA 3.29985 3.2998 3.29975 3.2997 3.5 100 75 50 +85°C -40°C 25 0 -25 -50 +25°C -75 -100 -125 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 VIN (V) FIGURE 86. LINE REGULATION (3 REPRESENTATIVE UNITS) 25 5.5 -150 3.5 3.7 3.9 4.1 4.3 4.5 4.7 VIN (V) 4.9 5.1 5.3 5.5 FIGURE 87. LINE REGULATION OVER TEMPERATURE FN8082.7 August 1, 2006 ISL60002 Typical Performance Characteristic Curves ISL60002, VOUT = 3.3V (Continued) VIN = 3.0V, IOUT = 0mA, TA = +25°C unless otherwise specified CL = 1nF 100mV/DIV 100mV/DIV CL = 0nF ∆VIN = 0.30V ∆VIN = -0.30V ∆VIN = 0.30V ∆VIN = -0.30V 1ms/DIV 1ms/DIV FIGURE 88. LINE TRANSIENT RESPONSE FIGURE 89. LINE TRANSIENT RESPONSE 0 NO LOAD -10 -20 PSRR (dB) -30 1nF LOAD -40 -50 10nF LOAD -60 100nF LOAD -70 -80 -90 -100 1 10 100 1k 10k FREQUENCY (Hz) 100k 1M FIGURE 90. PSRR vs CAPACITIVE LOAD 0.60 1.00 0.50 0.80 0.40 0.20 0.40 +25°C 0.10 ∆VOUT (mV) ∆VOUT (mV) 0.30 -40°C 0.00 +85°C 0.60 +85°C -0.10 -0.20 0.20 +25°C -40°C 0.00 -0.20 -0.40 -0.30 -0.60 -0.40 -0.50 -0.60 -7 -6 -5 SINKING -0.80 -4 -3 -2 -1 0 1 2 3 OUTPUT CURRENT (mA) 4 5 6 7 SOURCING FIGURE 91. LOAD REGULATION ISOURCE-ISINK = ±7mA 26 -1.00 -20 -18-16-14-12-10 -8 -6 -4 -2 0 2 4 6 8 10 12 14 16 18 20 SOURCING SINKING OUTPUT CURRENT (mA) FIGURE 92. LOAD REGULATION ISOURCE-ISINK = ±20mA FN8082.7 August 1, 2006 ISL60002 Typical Performance Characteristic Curves ISL60002, VOUT = 3.3V (Continued) 1V/DIV 200mV/DIV VIN = 3.0V, IOUT = 0mA, TA = +25°C unless otherwise specified IL = -50µA IL = 50µA IL = -1mA 200µs/DIV 200µs/DIV 1V/DIV FIGURE 94. LOAD TRANSIENT RESPONSE 1V/DIV FIGURE 93. LOAD TRANSIENT RESPONSE IL = -7mA IL = 7mA IL = -20mA 200µs/DIV IL = 20mA 200µs/DIV FIGURE 95. LOAD TRANSIENT RESPONSE FIGURE 96. LOAD TRANSIENT RESPONSE 160 5 120 ZOUT (Ω) 4 3 360nA 2 10nF LOAD 100 80 60 40 1 0 1nF LOAD NO LOAD 140 VIN VIN and VOUT (V) IL = 1mA 100nF LOAD 20 0 2 4 6 TIME (ms) 8 FIGURE 97. TURN-ON TIME (+25°C) 27 10 12 0 1 10 100 1k FREQUENCY (Hz) 10k 100k FIGURE 98. ZOUT vs FREQUENCY FN8082.7 August 1, 2006 ISL60002 Applications Information VIN = +3.0V 10µF FGA Technology The ISL60002 series of voltage references use the floating gate technology to create references with very low drift and supply current. Essentially the charge stored on a floating gate cell is set precisely in manufacturing. The reference voltage output itself is a buffered version of the floating gate voltage. The resulting reference device has excellent characteristics which are unique in the industry: very low temperature drift, high initial accuracy, and almost zero supply current. Also, the reference voltage itself is not limited by voltage bandgaps or zener settings, so a wide range of reference voltages can be programmed (standard voltage settings are provided, but customer-specific voltages are available). The process used for these reference devices is a floating gate CMOS process, and the amplifier circuitry uses CMOS transistors for amplifier and output transistor circuitry. While providing excellent accuracy, there are limitations in output noise level and load regulation due to the MOS device characteristics. These limitations are addressed with circuit techniques discussed in other sections. Nanopower Operation Reference devices achieve their highest accuracy when powered up continuously, and after initial stabilization has taken place. This drift can be eliminated by leaving the power on continuously. The ISL60002 is the first high precision voltage reference with ultra low power consumption that makes it possible to leave power on continuously in battery operated circuits. The ISL60002 consumes extremely low supply current due to the proprietary FGA technology. Supply current at room temperature is typically 350nA which is 1 to 2 orders of magnitude lower than competitive devices. Application circuits using battery power will benefit greatly from having an accurate, stable reference which essentially presents no load to the battery. In particular, battery powered data converter circuits that would normally require the entire circuit to be disabled when not in use can remain powered up between conversions as shown in Figure 99. Data acquisition circuits providing 12 to 24 bits of accuracy can operate with the reference device continuously biased with no power penalty, providing the highest accuracy and lowest possible long term drift. Other reference devices consuming higher supply currents will need to be disabled in between conversions to conserve battery capacity. Absolute accuracy will suffer as the device is biased and requires time to settle to its final value, or, may not actually settle to a final value as power on time may be short. 28 VIN 0.01µF VOUT ISL60002 GND 0.001µF–0.01µF REF IN SERIAL BUS ENABLE SCK SDAT 12 to 24-BIT A/D CONVERTER FIGURE 99. Board Mounting Considerations For applications requiring the highest accuracy, board mounting location should be reviewed. Placing the device in areas subject to slight twisting can cause degradation of the accuracy of the reference voltage due to die stresses. It is normally best to place the device near the edge of a board, or the shortest side, as the axis of bending is most limited at that location. Obviously mounting the device on flexprint or extremely thin PC material will likewise cause loss of reference accuracy. Noise Performance and Reduction The output noise voltage in a 0.1Hz to 10Hz bandwidth is typically 30µVP-P. This is shown in the plot in the Typical Performance Curves. The noise measurement is made with a bandpass filter 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 at 12.6Hz to create a filter with a 9.9Hz bandwidth. Noise in the 10kHz to 1MHz bandwidth is approximately 400µVP-P with no capacitance on the output, as shown in Figure 100. These noise measurements are made with a 2 decade bandpass filter made of a 1 pole highpass filter with a corner frequency at 1/10 of the center frequency and 1-pole low-pass filter with a corner frequency at 10 times the center frequency. Figure 100 also shows the noise in the 10kHz to 1MHz band can be reduced to about 50µVP-P using a 0.001µF capacitor on the output. Noise in the 1kHz to 100kHz band can be further reduced using a 0.1µF capacitor on the output, but noise in the 1Hz to 100Hz band increases due to instability of the very low power amplifier with a 0.1µF capacitance load. For load capacitances above 0.001µF the noise reduction network shown in Figure 101 is recommended. This network reduces noise significantly over the full bandwidth. As shown in Figure 100, noise is reduced to less than 40µVP-P from 1Hz to 1MHz using this network with a 0.01µF capacitor and a 2kΩ resistor in series with a 10µF capacitor. FN8082.7 August 1, 2006 ISL60002 400 3.5 350 CL = 0.001µF 300 CL = 0.1µF CL = 0.01µF & 10µF + 2kΩ 3.0 VIN 2.5 VIN AND VOUT (V) NOISE VOLTAGE (µVP-P) CL = 0 250 200 150 2.0 580nA 1.5 100 1.0 50 0.5 280nA 380nA 0 1 10 100 1k 10k 100k 0 -1 1 3 5 TIME (ms) 7 9 11 7 9 11 FIGURE 100. NOISE REDUCTION 3.5 VIN = 3.0V VIN 3.0 0.1µF VIN VO 2.5 ISL60002 GND 2kΩ 0.01µF 10µF VIN AND VOUT (V) 10µF 2.0 580nA 280nA 1.5 1.0 380nA FIGURE 101. 0.5 Turn-On Time The ISL60002 devices have ultra-low supply current and thus the time to bias up internal circuitry to final values will be longer than with higher power references. Normal turn-on time is typically 7ms. This is shown in Figure 102. Since devices can vary in supply current down to >300nA, turn-on time can last up to about 12ms. Care should be taken in system design to include this delay before measurements or conversions are started. 29 0 -1 1 3 5 TIME (ms) FIGURE 102. TURN-ON TIME 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. FN8082.7 August 1, 2006 ISL60002 Typical Application Circuits VIN = 5.0V R = 200Ω 2N2905 VIN ISL60002 VOUT VOUT = 2.50V 2.5V/50mA 0.001µF GND FIGURE 103. PRECISION 2.5V 50mA REFERENCE 2.7 - 5.5V 10µF 0.1µF VIN VOUT ISL60002, VOUT = 2.50V GND 0.001µF VCC RH VOUT X9119 + SDA 2-WIRE BUS VOUT SCL VSS – (BUFFERED) RL FIGURE 104. 2.5V FULL SCALE LOW-DRIFT 10-BIT ADJUSTABLE VOLTAGE SOURCE +2.7-5.5V 0.1µF 10µF VIN VOUT ISL60002 + VOUT SENSE – LOAD GND FIGURE 105. KELVIN SENSED LOAD 30 FN8082.7 August 1, 2006 ISL60002 Packaging Information 3-Lead, SOT-23, Package Code H3 0.007 (0.20) B 0.0003 (0.08) 0.093 (2.35) BSC 0.046 (1.18) BSC B 0.055 (1.40) 0.047 (1.20) CL 4X 0.35 H A-B D 0.35 C A-B D 2X N/2 TIPS 1 0.075 (1.90) BSC 2 12° REF. TYP. 0.120 (3.04) 0.110 (2.80) 0.034 (0.88) 0.047 (1.02) 0.038 (0.95) BSC Parting Line Seating Plane 0.10 R MIN. 0.20 in 0.10 R MIN. 0.0004 (0.01) 0.0040 (0.10) SEATING PLANE 0.035 (0.89) 0.044 (1.12) .024 (0.60) .016 (0.40) 0–8°C 0.575 REF. NOTES: 1. All dimensions in inches (in parentheses in millimeters). 2. Package dimensions exclude molding flash. 3. Die and die paddle is facing down towards seating plane. 4. This part is compliant with JEDEC Specification TO-236AB. 5. Dimensioning and tolerances per ASME, Y14.5M-1994. All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems. Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets 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 31 FN8082.7 August 1, 2006