LT6004IMS8

LT6003/LT6004/LT6005 1.6V, 1µA Precision Rail-to-Rail Input and Output Op Amps FEATURES ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ DESCRIPTION The LT®6003/LT6004/LT6005 are single/dual/quad op amps designed to maximize battery life and performance for portable applications. These amplifiers operate on supplies as low as 1.6V and are fully specified and guaranteed over temperature on 1.8V, 5V and ±8V supplies while only drawing 1µA maximum quiescent current. The ultralow supply current and low operating voltage are combined with excellent amplifier specifications; input offset voltage of 500µV maximum with a typical drift of only 1µV/°C, input bias current of 90pA maximum, open loop gain of 100,000 and the ability to drive 500pF capacitive loads, making the LT6003/LT6004/LT6005 amplifiers ideal when excellent performance is required in battery powered applications. The single LT6003 is available in the 5-pin TSOT-23 and tiny 2mm × 2mm DFN packages. The dual LT6004 is available in the 8-pin MSOP and 3mm × 3mm DFN packages. The quad LT6005 is available in the 16-pin TSSOP and 5mm × 3mm DFN packages. These devices are specified over the commercial, industrial and automotive temperature ranges. , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Wide Supply Range: 1.6V to 16V Low Supply Current: 1µA/Amplifier Max Low Input Bias Current: 90pA Max Low Input Offset Voltage: 500µV Max Low Input Offset Voltage Drift: 1µV/°C CMRR: 100dB PSRR: 95dB AVOL Driving 20kΩ Load: 100,000 Min Capacitive Load Handling: 500pF Specified from –40°C to 125°C Tiny 2mm × 2mm DFN Package APPLICATIONS ■ ■ ■ ■ Portable Gas Monitors Battery- or Solar-Powered Systems Low Voltage Signal Processing Micropower Active Filters TYPICAL APPLICATION Micropower Oxygen Sensor SUPPLY CURRENT PER AMPLIFIER (µA) 10M 1% 100k 1% OXYGEN SENSOR CITY TECHNOLOGY 4OX(2) 100k 1% 2.5 AV = 1 VCM = 0.5V 2.0 TA = 125°C Start-Up Characteristics Supply Current vs Supply Voltage 1.6V 1.5 LT6003 VOUT = 1V IN AIR ISUPPLY = 0.95µA 1.0 TA = 85°C TA = 25°C 100Ω 1% 0.5 TA = –55°C 0 0.5 0.7 0.9 1.1 1.3 1.5 1.7 1.9 TOTAL SUPPLY VOLTAGE (V) 2.1 www.citytech.com 600345 TA01a 600345 TA01b 600345f 1 LT6003/LT6004/LT6005 ABSOLUTE MAXIMUM RATINGS (Note 1) Total Supply Voltage (V+ to V–) .................................18V Differential Input Voltage ..........................................18V Input Voltage Below V– ...............................................9V Input Current..........................................................10mA Output Short Circuit Duration (Note 2) ............ Indefinite Operating Temperature Range (Note 3) LT6003C, LT6004C, LT6005C............... –40°C to 85°C LT6003I, LT6004I, LT6005I .................. –40°C to 85°C LT6003H, LT6004H, LT6005H ............ –40°C to 125°C Specified Temperature Range (Note 4) LT6003C, LT6004C, LT6005C................... 0°C to 70°C LT6003I, LT6004I, LT6005I .................. –40°C to 85°C LT6003H, LT6004H, LT6005H ............ –40°C to 125°C Junction Temperature DFN Packages ................................................... 125°C All Other Packages ............................................ 150°C Storage Temperature Range DFN Packages .................................... –65°C to 125°C All Other Packages ............................. –65°C to 150°C Lead Temperature (Soldering, 10 sec.) TSOT, MSOP, TSSOP Packages......................... 300°C PACKAGE/ORDER INFORMATION TOP VIEW +IN 1 –IN 2 – + OUT 3 V+ 4 5 OUT 1 V– 2 +IN 3 – + 4 –IN TOP VIEW 5 V+ ORDER PART NUMBER LT6003CDC LT6003IDC LT6003HDC ORDER PART NUMBER LT6003CS5 LT6003IS5 LT6003HS5 ORDER PART NUMBER 8 V+ TOP VIEW + – DC PART MARKING* LCKF LCKF LCKF S5 PART MARKING* LTCKG LTCKG LTCKG DD PART MARKING* LCCB LCCB LCCB MS8 PART MARKING* LTCBZ LTCBZ LTCBZ DC PACKAGE 4-LEAD (2mm × 2mm) PLASTIC DFN TJMAX = 125°C, θJA = 102°C/W (NOTE 2) EXPOSED PAD (PIN 5) IS V–, MUST BE SOLDERED TO PCB S5 PACKAGE 5-LEAD PLASTIC TSOT-23 TJMAX = 150°C, θJA = 250°C/W TOP VIEW OUT A 1 –IN A 2 +IN A 3 V– 4 – +A 9 7 OUT B – B+ 6 –IN B 5 +IN B DD PACKAGE 8-LEAD (3mm × 3mm) PLASTIC DFN TJMAX = 125°C, θJA = 160°C/W (NOTE 2) EXPOSED PAD (PIN 9) CONNECTED TO V– (PCB CONNECTION OPTIONAL) MS8 PACKAGE 8-LEAD PLASTIC MSOP TJMAX = 150°C, θJA = 250°C/W 2 + – OUT A –IN A +IN A V– 1 2 3 4 8 7 6 5 V+ OUT B –IN B +IN B LT6004CDD LT6004IDD LT6004HDD ORDER PART NUMBER LT6004CMS8 LT6004IMS8 LT6004HMS8 600345f LT6003/LT6004/LT6005 PACKAGE/ORDER INFORMATION TOP VIEW TOP VIEW OUT A –IN A +IN A V+ +IN B –IN B OUT B NC 1 + 16 OUT D – – ORDER PART NUMBER 16 OUT D + DHC PART MARKING* 6005 6005 6005 GN PART MARKING 6005 6005I 6005H A D 4 + 17 – 13 V– 12 +IN C 11 –IN C 10 OUT C 9 NC C + +IN A V+ +IN B –IN B OUT B NC 3 4 5 6 7 8 7 8 DHC PACKAGE 16-LEAD (5mm × 3mm) PLASTIC DFN TJMAX = 125°C, θJA = 160°C/W (NOTE 2) EXPOSED PAD (PIN 17) CONNECTED TO V–, (PCB CONNECTION OPTIONAL) GN PACKAGE 16-LEAD PLASTIC TSSOP TJMAX = 150°C, θJA = 135°C/W Order Options Tape and Reel: Add #TR Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF Lead Free Part Marking: http://www.linear.com/leadfree/ Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. ELECTRICAL CHARACTERISTICS SYMBOL VOS PARAMETER Input Offset Voltage (LT6003C/I, LT6004C/I, LT6005C/I) The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VS = 1.8V, 0V, VCM = 0.5V; VS = 5V, 0V, VCM = 2.5V, VOUT = half supply, RL to ground, unless otherwise noted. CONDITIONS LT6003S5, LT6004MS8 0°C ≤ TA ≤ 70°C –40°C ≤ TA ≤ 85°C LT6005GN 0°C ≤ TA ≤ 70°C –40°C ≤ TA ≤ 85°C LT6004DD, LT6005DHC 0°C ≤ TA ≤ 70°C –40°C ≤ TA ≤ 85°C LT6003DC 0°C ≤ TA ≤ 70°C –40°C ≤ TA ≤ 85°C ● ● ΔVOS/ΔT IB Input Offset Voltage Drift (Note 5) Input Bias Current (Note 7) S5, MS8, GN DC, DD, DHC VCM = 0.3V, 0°C ≤ TA ≤ 70°C VCM = V+ – 0.3V, 0°C ≤ TA ≤ 70°C VCM = 0.3V, –40°C ≤ TA ≤ 85°C VCM = V+ – 0.3V, –40°C ≤ TA ≤ 85°C VCM = 0V VCM = 0.3V VCM = V+ – 0.3V VCM = 0V IOS Input Offset Current (Note 7) – – 6 B C + + B 5 + 3 – + – – 2 15 –IN D 14 +IN D OUT A –IN A 1 2 A D 15 –IN D 14 +IN D 13 V– 12 +IN C 11 –IN C 10 OUT C 9 NC LT6005CDHC LT6005IDHC LT6005HDHC ORDER PART NUMBER LT6005CGN LT6005IGN LT6005HGN MIN TYP 175 MAX 500 725 950 650 925 1.15 850 1.15 1.4 950 1.3 1.6 5 7 90 140 120 170 1.4 80 80 100 UNITS µV µV µV µV µV mV µV mV mV µV mV mV µV/°C µV/°C pA pA pA pA nA pA pA pA 190 ● ● 290 ● ● 290 ● ● ● ● ● ● ● ● ● ● ● ● 2 2 5 40 5 40 130 5 7 5 600345f 3 LT6003/LT6004/LT6005 ELECTRICAL CHARACTERISTICS SYMBOL en in RIN CIN CMRR PARAMETER Input Noise Voltage Input Noise Voltage Density Input Noise Current Density Input Resistance Input Capacitance Common Mode Rejection Ratio (Note 7) VS = 1.8V VCM = 0V to 0.7V VCM = 0V to 1.8V, S5, MS8, GN VCM = 0V to 1.8V, DC, DD, DHC VS = 5V VCM = 0V to 3.9V VCM = 0V to 5V, S5, MS8, GN VCM = 0V to 5V, DC, DD, DHC Input Offset Voltage Shift (Note 7) VCM = 0V to V+ – 1.1V VCM = 0V to V+, S5, MS8, GN VCM = 0V to V+, DC, DD, DHC Guaranteed by CMRR VS = 1.6V to 6V, VCM = 0.5V, 0°C ≤ TA ≤ 70°C VS = 1.7V to 6V, VCM = 0.5V, –40°C ≤ TA ≤ 85°C Guaranteed by PSRR, 0°C ≤ TA ≤ 70°C –40°C ≤ TA ≤ 85°C VS = 1.8V RL = 20kΩ, VOUT = 0.25V to 1.25V VS = 5V RL = 20kΩ, VOUT = 0.25V to 4.25V VOL VOH ISC Output Swing Low (Notes 6, 8) Output Swing High (Notes 6, 9) Short Circuit Current (Note 8) No Load ISINK = 100µA No Load ISOURCE = 100µA Short to GND 0°C ≤ TA ≤ 70°C –40°C ≤ TA ≤ 85°C Short to V+ 0°C ≤ TA ≤ 70°C –40°C ≤ TA ≤ 85°C IS Supply Current per Amplifier VS = 1.8V 0°C ≤ TA ≤ 70°C –40°C ≤ TA ≤ 85°C VS = 5V 0°C ≤ TA ≤ 70°C –40°C ≤ TA ≤ 85°C GBW SR Gain Bandwidth Product Slew Rate (Note 8) f = 100Hz AV = –1, RF = RG = 1MΩ 0°C ≤ TA ≤ 70°C –40°C ≤ TA ≤ 85°C VOUT = 1.5VP-P (Note 10) ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● (LT6003C/I, LT6004C/I, LT6005C/I) The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VS = 1.8V, 0V, VCM = 0.5V; VS = 5V, 0V, VCM = 2.5V, VOUT = half supply, RL to ground, unless otherwise noted. CONDITIONS 0.1Hz to 10Hz f = 100Hz f = 100Hz Differential Common Mode MIN TYP 3 325 12 10 2000 6 73 63 60 88 72 69 100 80 78 115 90 86 7 0.16 0.23 0 80 78 1.6 1.7 25 15 100 60 150 500 15 110 45 200 2 1.5 0.5 2 1.5 0.5 5 50 240 100 350 95 95 155 1.3 1.8 V+ MAX UNITS µVP-P nV/√Hz fA/√Hz GΩ GΩ pF dB dB dB dB dB dB µV mV mV V dB dB V V V/mV V/mV V/mV V/mV mV mV mV mV mA mA mA mA mA mA 1 1.4 1.6 1.2 1.6 1.9 µA µA µA µA µA µA kHz V/ms V/ms V/ms Hz Input Voltage Range PSRR Power Supply Rejection Ratio Minimum Supply Voltage AVOL Large Signal Voltage Gain (Note 7) 7 0.85 1 ● ● 2 0.55 0.4 0.2 0.8 FPBW Full Power Bandwidth 170 600345f 4 LT6003/LT6004/LT6005 ELECTRICAL CHARACTERISTICS SYMBOL VOS PARAMETER Input Offset Voltage (LT6003H, LT6004H, LT6005H) The ● denotes the specifications which apply over the full specified temperature range of –40°C ≤ TA ≤ 125°C. VS = 1.8V, 0V, VCM = 0.5V; VS = 5V, 0V, VCM = 2.5V, VOUT = half supply, RL to ground, unless otherwise noted. CONDITIONS LT6003S5, LT6004MS8 LT6005GN LT6004DD, LT6005DHC LT6003DC S5, MS8, GN DC, DD, DHC LT6003, VCM = 0.3V, V+ – 0.3V LT6004, LT6005, VCM = 0.3V, V+ – 0.3V LT6003, VCM = 0.3V, V+ – 0.3V LT6004, LT6005, VCM = 0.3V, V+ – 0.3V VS = 1.8V VCM = 0.3V to 0.7V VCM = 0.3V to 1.5V, S5, MS8, GN VCM = 0.3V to 1.5V, DC, DD, DHC VS = 5V VCM = 0.3V to 3.9V VCM = 0.3V to 4.7V, S5, MS8, GN VCM = 0.3V to 4.7V, DC, DD, DHC Input Offset Voltage Shift (Note 7) VCM = 0.3V to V+ – 1.1V VCM = 0.3V to V+ – 0.3V, S5, MS8, GN VCM = 0.3V to V+ – 0.3V, DC, DD, DHC Guaranteed by CMRR VS = 1.7V to 6V, VCM = 0.5V Guaranteed by PSRR VS = 1.8V, RL = 20kΩ, VOUT = 0.4V to 1.25V VS = 5V, RL = 20kΩ, VOUT = 0.4V to 4.25V VOL VOH ISC IS SR Output Swing Low (Notes 6, 8) Output Swing High (Notes 6, 9) Short Circuit Current (Note 8) Supply Current per Amplifier Slew Rate (Note 8) No Load ISINK = 100µA No Load ISOURCE = 100µA Short to GND Short to V+ VS = 1.8V VS = 5V AV = –1, RF = RG = 1MΩ ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● MIN TYP MAX 1.5 1.7 1.9 2.1 UNITS mV mV mV mV µV/°C µV/°C nA nA nA nA dB dB dB dB dB dB ΔVOS/ΔT IB IOS CMRR Input Offset Voltage Drift (Note 5) Input Bias Current (Note 7) Input Offset Current (Note 7) Common Mode Rejection Ratio (Note 7) 2 3 6 8 6 12 2 4 67 57 55 86 68 66 180 1.7 2.2 0.3 76 1.7 4 20 60 275 120 400 0.5 0.5 2.2 2.5 0.2 V+ – 0.3V µV mV mV V dB V V/mV V/mV mV mV mV mV mA mA µA µA V/ms Input Voltage Range PSRR AVOL Power Supply Rejection Ratio Minimum Supply Large Signal Voltage Gain (Note 7) 600345f 5 LT6003/LT6004/LT6005 ELECTRICAL CHARACTERISTICS SYMBOL VOS PARAMETER Input Offset Voltage (LT6003C/I, LT6004C/I, LT6005C/I) The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VS = ±8V, VCM = VOUT = half supply, RL to ground, unless otherwise noted. CONDITIONS LT6003S5, LT6004MS8 0°C ≤ TA ≤ 70°C –40°C ≤ TA ≤ 85°C LT6005GN 0°C ≤ TA ≤ 70°C –40°C ≤ TA ≤ 85°C LT6004DD, LT6005DHC 0°C ≤ TA ≤ 70°C –40°C ≤ TA ≤ 85°C LT6003DC 0°C ≤ TA ≤ 70°C –40°C ≤ TA ≤ 85°C ● ● MIN TYP 185 MAX 600 825 1.05 750 1.05 1.25 950 1.25 1.5 1.05 1.4 1.65 5 7 100 150 90 UNITS µV µV mV µV mV mV µV mV mV mV mV mV µV/°C µV/°C pA pA pA µVP-P nV/√Hz fA/√Hz GΩ GΩ pF dB dB dB 200 ● ● 300 ● ● 300 ● ● ● ● ● ● ● ΔVOS/ΔT IB IOS en in RIN CIN CMRR Input Offset Voltage Drift (Note 5) Input Bias Current Input Offset Current Input Noise Voltage Input Noise Voltage Density Input Noise Current Density Input Resistance Input Capacitance Common Mode Rejection Ratio S5, MS8, GN DC, DD, DHC 0°C ≤ TA ≤ 70°C –40°C ≤ TA ≤ 85°C 0.1Hz to 10Hz f = 100Hz f = 100Hz Differential Common Mode VCM = –8V to 6.9V VCM = –8V to 8V, S5, MS8, GN VCM = –8V to 8V, DC, DD, DHC VCM = –8V to 6.9V VCM = –8V to 8V, S5, MS8, GN VCM = –8V to 8V, DC, DD, DHC Guaranteed by CMRR VS = ±1.1V to ±8V RL = 100kΩ, VOUT = –7.3V to 7.3V No Load ISINK = 100µA No Load ISOURCE = 100µA Short to GND 0°C ≤ TA ≤ 70°C –40°C ≤ TA ≤ 85°C 0°C ≤ TA ≤ 70°C –40°C ≤ TA ≤ 85°C f = 100Hz AV = –1, RF = RG = 1MΩ 0°C ≤ TA ≤ 70°C –40°C ≤ TA ≤ 85°C VOUT = 14VP-P (Note 10) 2 2 7 7 7 3 325 12 10 2000 6 ● ● ● ● ● ● ● ● 92 82 78 120 100 96 15 0.16 0.25 375 1.3 2 8 105 350 10 105 50 195 9 50 240 120 350 Input Offset Voltage Shift µV mV mV V dB V/mV mV mV mV mV mA mA mA µA µA µA kHz V/ms V/ms V/ms Hz Input Voltage Range PSRR AVOL VOL VOH ISC Power Supply Rejection Ratio Large Signal Voltage Gain Output Swing Low (Notes 6, 8) Output Swing High (Notes 6, 9) Short Circuit Current –8 86 ● ● ● ● ● ● ● ● 4 3 1 IS Supply Current per Amplifier 1.25 1.5 1.9 2.2 GBW SR Gain Bandwidth Product Slew Rate (Note 8) 3 ● ● 0.55 0.4 0.2 1.3 FPBW Full Power Bandwidth 30 600345f 6 LT6003/LT6004/LT6005 ELECTRICAL CHARACTERISTICS SYMBOL VOS PARAMETER Input Offset Voltage (LT6003H, LT6004H, LT6005H) The ● denotes the specifications which apply over the full specified temperature range of –40°C ≤ TA ≤ 125°C. VS = ±8V, VCM = VOUT = half supply, RL to ground, unless otherwise noted. CONDITIONS LT6003S5, LT6004MS8 LT6005GN LT6004DD, LT6005DHC LT6003DC S5, MS8, GN DC, DD, DHC LT6003 LT6004, LT6005 LT6003 LT6004, LT6005 VCM = –7.7V to 6.9V VCM = –7.7V to 7.7V, S5, MS8, GN VCM = –7.7V to 7.7V, DC, DD, DHC VCM = –7.7V to 6.9V VCM = –7.7V to 7.7V, S5, MS8, GN VCM = –7.7V to 7.7V, DC, DD, DHC Guaranteed by CMRR VS = ±1.1V to ±8V No Load ISINK = 100µA No Load ISOURCE = 100µA Short to GND AV = –1, RF = RG = 1MΩ ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● MIN TYP MAX 1.6 1.8 2 2.2 UNITS mV mV mV mV µV/°C µV/°C nA nA nA nA dB dB dB ΔVOS/ΔT IB IOS CMRR Input Offset Voltage Drift (Note 5) Input Bias Current Input Offset Current Common Mode Rejection Ratio 2 3 6 8 6 12 2 4 90 78 76 460 1.9 2.5 –7.7 84 60 275 140 400 1 3 0.2 7.7 Input Offset Voltage Shift µV mV mV V dB mV mV mV mV mA µA V/ms Input Voltage Range PSRR VOL VOH ISC IS SR Power Supply Rejection Ratio Output Swing Low (Notes 6, 8) Output Swing High (Note 6) Short Circuit Current Supply Current per Amplifier Slew Rate (Note 8) Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: A heat sink may be required to keep the junction temperature below absolute maximum. This depends on the power supply voltage and how many amplifiers are shorted. The θJA specfied for the DC, DD and DHC packages is with minimal PCB heat spreading metal. Using expanded metal area on all layers of a board reduces this value. Note 3: The LT6003C/LT6004C/LT6005C and LT6003I/LT6004I/LT6005I are guaranteed functional over the temperature range of –40°C to 85°C. The LT6003H/LT6004H/LT6005H are guaranteed functional over the operating temperature range of –40°C to 125°C. Note 4: The LT6003C/LT6004C/LT6005C are guaranteed to meet specified performance from 0°C to 70°C. The LT6003C/LT6004C/LT6005C are designed, characterized and expected to meet specified performance from –40°C to 85°C but are not tested or QA sampled at these temperatures. The LT6003I/LT6004I/LT6005I are guaranteed to meet specified performance from –40°C to 85°C. The LT6003H/LT6004H/LT6005H are guaranteed to meet specified performance from –40°C to 125°C. Note 5: This parameter is not 100% tested. Note 6: Output voltage swings are measured between the output and power supply rails. Note 7: Limits are guaranteed by correlation to VS = 5V tests. Note 8: Limits are guaranteed by correlation to VS = 1.8V tests Note 9: Limits are guaranteed by correlation to VS = ±8V tests Note 10: Full-power bandwidth is calculated from the slew rate: FPBW = SR/πVP-P. 600345f 7 LT6003/LT6004/LT6005 TYPICAL PERFORMANCE CHARACTERISTICS VOS Distribution 35 VS = 5V, 0V VCM = 2.5V 30 MS8 PACKAGE 1377 AMPLIFIERS 25 20 15 10 5 0 –600 20 18 16 PERCENT OF UNITS (%) 14 12 10 8 6 4 2 –400 –200 0 200 400 INPUT OFFSET VOLTAGE (µV) 600 0 –5 –4 –3 –2 –1 0 1 2 3 DISTRIBUTION (µV/°C) 4 5 TC VOS Distribution SUPPLY CURRENT PER AMPLIFIER (µA) VS = 5V, 0V VCM = 2.5V MS8, GN16, SOT23 PACKAGES –40°C TO 85°C 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 Supply Current vs Supply Voltage VCM = 0.5V TA = 125°C PERCENT OF UNITS (%) TA = 85°C TA = 25°C TA = –55°C 0 2 6 8 4 10 12 SUPPLY VOLTAGE (V) 14 16 600345 G01 600345 G02 600345 G03 Change in Input Offset Voltage vs Total Supply Voltage 250 CHANGE IN OFFSET VOLTAGE (µV) 200 OFFSET VOTLAGE (µV) 150 100 50 TA = 25°C 0 –50 TA = 125°C TA = –55°C 300 200 100 0 Input Offset Voltage vs Total Supply Voltage VCM = 0.5V TYPICAL PART INPUT OFFSET VOLTAGE (µV) 100 50 0 –50 –100 –150 –200 –250 –300 0 2 4 6 8 10 12 14 TOTAL SUPPLY VOLTAGE (V) 16 Input Offset Voltage vs Input Common Mode Voltage TA = 25°C TA = –55°C TA = 25°C TA = –55°C TA = 125°C –100 –200 –300 –400 TA = 125°C –100 1 1.5 2.0 2.5 TOTAL SUPPLY VOLTAGE (V) 3.0 600345 G04 VS = 5V, 0V TYPICAL PART 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 INPUT COMMON MODE VOLTAGE (V) 5 60012 G05 600345 G06 Input Bias Current vs Common Mode Voltage 3.0 2.5 INPUT BIAS CURRENT (nA) 2.0 1.5 1.0 0.1 0 –0.1 –0.2 –0.3 –0.4 0 2 1 3 4 COMMON MODE VOLTAGE (V) 5 600345 G07 Output Saturation Voltage vs Load Current (Output High) 1.0 OUTPUT HIGH SATURATION VOLTAGE (V) OUTPUT LOW SATURATION VOLTAGE (V) VS = 5V, 0V INPUT OVERDRIVE = 30mV 1.0 Output Saturation Voltage vs Load Current (Output Low) VS = 5V, 0V INPUT OVERDRIVE = 30mV TA = 125°C TA = –55°C 0.01 TA = 25°C VS = 5V, 0V TA = 125°C 0.1 TA = 85°C TA = –55°C TA = 25°C 0.1 TA = 125°C TA = 25°C TA = –55°C 0.01 0.00001 0.1 0.001 SOURCING LOAD CURRENT (mA) 10 0.001 0.00001 0.001 0.1 SINKING LOAD CURRENT (mA) 10 600345 G09 600345 G08 600345f 8 LT6003/LT6004/LT6005 TYPICAL PERFORMANCE CHARACTERISTICS Output Saturation Voltage vs Input Overdrive 100 OUTPUT SATURATION VOLTAGE (mV) 90 80 70 60 50 40 30 20 10 0 0 5 10 15 20 25 INPUT OVERDRIVE (mV) 30 OUTPUT LOW OUTPUT HIGH OUTPUT SHORT-CIRCUIT CURRENT (mA) VS = ±2.5V NO LOAD 14 12 10 TA = 125°C 8 TA = 25°C 6 4 2 0 0 2 3 1 4 TOTAL SUPPLY VOLTAGE (V) 5 600345 G11 Output Short-Circuit Current vs Total Supply Voltage (Sourcing) OUTPUT SHORT-CIRCIUT CURRENT (mA) VCM = 0.5V OUTPUT SHORTED TO V– 14 12 10 8 6 4 2 0 Output Short-Circuit Current vs Total Supply Voltage (Sinking) VCM = 0.5V OUTPUT SHORTED TO V+ TA = 125°C TA = 25°C TA = –55°C TA = –55°C 0 1 2 3 4 5 600345 G12 TOTAL SUPPLY VOLTAGE (V) 600345 G10 0.1Hz to 10Hz Voltage Noise VS = ± 2.5V TA = 25°C INPUT VOLTAGE NOISE (nV/√Hz) VOLTAGE NOISE (1µV/DIV) 450 Voltage Noise vs Frequency VS = 5V, 0V TA = 25°C CURRENT NOISE (fA/√Hz) 100 Current Noise vs Frequency VS = 5V, 0V TA = 25°C 400 VCM = 4.5V VCM = 2.5V 300 VCM = 4.5V 350 10 VCM = 2.5V 250 0 1 2 3 4567 TIME (SECONDS) 8 9 10 200 1 10 FREQUENCY (Hz) 100 600345 G14 1 1 10 100 FREQUENCY (Hz) 1000 600345 G15 600345 G13 600345f 9 LT6003/LT6004/LT6005 TYPICAL PERFORMANCE CHARACTERISTICS Open-Loop Gain 60 CHANGE IN INPUT OFFSET VOLTAGE (µV) 40 CHANGE IN INPUT OFFSET VOLTAGE (µV) VS = 1.8V, 0V VCM = 0.5V TA = 25°C RL = 1M 20 RL = 100k 0 RL = 20k 30 RL = 100k 20 10 0 –10 –20 –30 –40 0 0.3 0.6 0.9 1.2 OUTPUT VOLTAGE (V) 1.5 1.8 0 1 2 3 4 OUTPUT VOLTAGE (V) 5 600345 G17 600345 G16 Open-Loop Gain CHANGE IN INPUT OFFSET VOLTAGE (µV) VS = 5V, 0V VCM = 0.5V TA = 25°C 120 100 80 60 40 20 0 –20 –40 –60 –80 Open-Loop Gain VS = ±8V TA = 25°C RL = 20k RL = 100k RL = 1M 40 RL = 1M RL = 20k –20 –40 – 100 –8 –6 –4 –2 0 2 4 OUTPUT VOLTAGE (V) 6 8 600345 G18 Gain Bandwidth and Phase Margin vs Total Supply Voltage PHASE –55°C GAIN BANDWIDTH (kHz) 125°C 25°C 125°C, VCM = V+ – 0.5V 5 4 3 2 1 0 0 2 –55°C GAIN 125°C 25°C f = 100Hz (GBW) VCM = HALF SUPPLY EXCEPT WHERE NOTED 16 60 55 50 PHASE MARGIN (DEG) SLEW RATE (V/ms) 45 40 2.5 2.0 1.5 1.0 0.5 3.0 Slew Rate vs Temperature AV = –1 RF = RG = 1M Gain and Phase vs Frequency 120 VCM = 2.5V PHASE VCM = 4.5V 40 PHASE (DEG) GAIN (dB) 60 40 20 0 –20 0.01 VCM = 2.5V VCM = 4.5V GAIN VS = 5V, 0V AV = –1 RF = RG = 1M 0 80 RISING VS = 1.8V, 0V RISING VS = 5V, 0V FALLING VS = 1.8V, 0V FALLING VS = 5V, 0V 4 6 8 10 12 14 TOTAL SUPPLY VOLTAGE (V) 0 –50 –25 25 75 0 50 TEMPERATURE (°C) 100 125 0.1 1 FREQUENCY (kHz) 10 600345 G21 600345 G19 600345 G20 600345f 10 LT6003/LT6004/LT6005 TYPICAL PERFORMANCE CHARACTERISTICS Capacitive Load Handling Overshoot vs Capacitive Load COMMON MODE REJECTION RATIO (dB) VS = 1.8V, 0V 40 VCM = 0.5V RL = 1M 35 OVERSHOOT (%) 30 25 20 15 10 5 0 10 100 1000 CAPACITIVE LOAD (pF) AV = 5 10000 600345 G22 Common Mode Rejection Ratio vs Frequency 120 100 80 60 40 20 0 0.01 VS = ±2.5V TA = 25°C 45 AV = 1 AV = 2 0.1 1 FREQUENCY (kHz) 10 600345 G23 Power Supply Rejection Ratio vs Frequency 100 POWER SUPPLY REJECTION RATIO (dB) 90 80 70 60 50 40 30 20 10 0 0.01 0.1 1 FREQUENCY (kHz) 10 600345 G24 Output Impedance vs Frequency 100 VS = ±2.5V TA = 25°C AV = 10 10 VS = ±2.5V TA = 25°C OUTPUT IMPEDANCE (kΩ) POSITIVE SUPPLY NEGATIVE SUPPLY 1 AV = 1 0.1 0.01 0.1 1 FREQUENCY (kHz) 10 600345 G25 600345f 11 LT6003/LT6004/LT6005 TYPICAL PERFORMANCE CHARACTERISTICS Large-Signal Response 4.5V 1.5V Large-Signal Response 0.5V 0.25V AV = 1 VS = 5V, 0V CL = 100pF RL = 100k 1ms/DIV 600345 G26 AV = 1 VS = 1.8V, 0V CL = 100pF RL = 100k 1ms/DIV 600345 G27 Small-Signal Response VIN Output Saturation Recovery 200mV/DIV 2V/DIV VOUT AV = 1 VS = ±2.5V CL = 50pF RL = 1M 200µs/DIV 600345 G28 AV = –1 VS = ±2.5V RF = RG = 1M 5ms/DIV 600345 G29 600345f 12 LT6003/LT6004/LT6005 SIMPLIFIED SCHEMATIC V+ R4 Q1 Q2 R5 Q14 CM V+ R1 R2 600k +IN Q7 V+ D3 R3 600k –IN Q12 Q13 Q3 Q4 Q5 Q6 C1 COMPLEMENTARY DRIVE GENERATOR OUT Q10 Q11 Q16 Q17 Q8 R6 Q9 R7 600345 SS Q15 V– Figure 1 600345f 13 LT6003/LT6004/LT6005 APPLICATIONS INFORMATION Supply Voltage The positive supply of the LT6003/LT6004/LT6005 should be bypassed with a small capacitor (about 0.01μF) within an inch of the pin. When driving heavy loads, an additional 4.7μF electrolytic capacitor should be used. When using split supplies, the same is true for the negative supply pin. Rail-to-Rail Characteristics The LT6003/LT6004/LT6005 are fully functional for an input signal range from the negative supply to the positive supply. Figure 1 shows a simplified schematic of the amplifier. The input stage consists of two differential amplifiers, a PNP stage Q3/Q6 and an NPN stage Q4/ Q5 that are active over different ranges of the input common mode voltage. The PNP stage is active for common mode voltages, VCM, between the negative supply to approximately 0.9V below the positive supply. As VCM moves closer towards the positive supply, the transistor Q7 will steer Q2’s tail current to the current mirror Q8/Q9, activating the NPN differential pair. The PNP pair becomes inactive for the rest of the input common mode voltage range up to the positive supply. The second stage is a folded cascode and current mirror that converts the input stage differential signals into a single ended output. Capacitor C1 reduces the unity cross frequency and improves the frequency stability without degrading the gain bandwidth of the amplifier. The complementary drive generator supplies current to the output transistors that swing from rail to rail. Input Input bias current (IB) is minimized with cancellation circuitry on both input stages. The cancellation circuitry remains active when VCM is more than 300mV from either rail. As VCM approaches V– the cancellation circuitry turns off and IB is determined by the tail current of Q2 and the beta of the PNP input transistors. As VCM approaches V+ devices in the cancellation circuitry saturate causing IB to increase (in the nanoamp range). Input offset voltage errors due to IB can be minimized by equalizing the noninverting and inverting source impedances. The input offset voltage changes depending on which input stage is active; input offset voltage is trimmed on both input stages, and is guaranteed to be 500μV max in the PNP stage. By trimming the input offset voltage of both input stages, the input offset voltage shift over the entire common mode range (CMRR) is typically 160μV, maintaining the precision characteristics of the amplifier. The input stage of the LT6003/LT6004/LT6005 incorporates phase reversal protection to prevent wrong polarity outputs from occurring when the inputs are driven up to 9V below the negative rail. 600k protective resistors are included in the input leads so that current does not become excessive when the inputs are forced below V– or when a large differential signal is applied. Input current should be limited to 10mA when the inputs are driven above the positive rail. Output The output of the LT6003/LT6004/LT6005 is guaranteed to swing within 100mV of the positive rail and 50mV of the negative rail with no load, over the industrial temperature range. The LT6003/LT6004/LT6005 can typically source 8mA on a single 5V supply. Sourcing current is reduced to 5mA on a single 1.8V supply as noted in the electrical characteristics. However, when sourcing more than 250μA with an output load impedance greater than 20kΩ, a 1μF capacitor in series with a 2k resistor should be placed from the output to ground to insure stability. The normally reverse-biased substrate diode from the output to V– will cause unlimited currents to flow when the output is forced below V–. If the current is transient and limited to 100mA, no damage will occur. 600345f 14 LT6003/LT6004/LT6005 APPLICATIONS INFORMATION Gain The open-loop gain is almost independent of load when the output is sourcing current. This optimizes performance in single supply applications where the load is returned to ground. The typical performance curve of Open-Loop Gain for various loads shows the details. Start-Up and Output Saturation Characteristics Micropower op amps are often not micropower during start-up or during output saturation. This can wreak havoc on limited current supplies, in the worst case there may not be enough supply current available to take the system up to nominal voltages. Unlike the LT6003/LT6004/LT6005, when the output saturates, some op amps may draw excessive current and pull down the supplies, compromising rail-to-rail performance. Figure 2 shows the start-up characteristics of the LT6003/LT6004/LT6005 for three limiting cases. The circuits are shown in Figure 3. One circuit creates a positive offset forcing the output to come up saturated high. Another circuit creates a negative offset forcing the output to come up saturated low, while the last circuit brings the output up at 1/2 supply. In all cases, the supply current is well controlled and is not excessive when the output is on either rail. 1.2 SUPPLY CURRENT PER AMPLIFIER (µA) 1.0 0.8 OUTPUT LOW 0.6 0.4 0.2 0 0 0.5 1 1.5 2 2.5 3 3.5 4 SUPPLY VOLTAGE (V) 4.5 5 TA = 25°C OUTPUT AT VS/2 OUTPUT HIGH 30mV VS VS VS VS/2 + – 30mV + – + – 600345 F03 Output High Output Low Output at VS/2 Figure 3. Circuits for Start-Up Characteristics Adaptive Filter The circuit of Figure 4 shows the LT6005 applied as a micropower adaptive filter, which automatically adjusts the time constant depending on the signal level. Op amp A1 buffers the input onto the RC which has either a 1ms or 20ms time constant depending on the state of switch S1. The signal is then buffered to the output by op amp A2. Op amps A3 and A4 are configured as gain-of-40 difference amplifiers, gaining up the difference between the buffered input voltage and the output. When there is no difference, the outputs of A3 and A4 will be near zero. When a positive signal step is applied to the input, the output of A3 rises. When a negative signal step is applied to the input, the output of A4 rises. These voltages are fed to the LT6700-2 comparator which has a built in 400mV reference. If the input step exceeds 10mV, the output of the difference amplifiers will exceed 400mV and the comparator output (wired in OR gate fashion) falls low. This turns on S1, reducing the time constant and speeding up the settling. The overall effect is that the circuit provides “slow filtering” with “fast settling”. Waveforms are shown in the accompanying photo, for a 100mV input step. The fast 1ms time constant is obvious in the output waveform, while the slow time constant is discernible as the slow ramping sections. That the slow time constant is discernible at all is due to delay time in the difference amplifier and comparator functions. 600345 F02 Figure 2. Start-Up Characteristics 600345f 15 LT6003/LT6004/LT6005 APPLICATIONS INFORMATION 10M VCC A3 1/4 LT6005 A4 1/4 LT6005 10M VCC 10M VS GND 10M LT6700-2 OUTB OUTA VCC 1M 10k A S COMPOUT B S1 VIN 0.1µF ADAPTIVE FILTER IMPROVES INHERENT TRADEOFF OF SETTLING TIME VS NOISE FILTERING. SMALL SIGNAL DC STEPS SETTLE WITH A 20ms TIME CONSTANT, FOR AN 8Hz NOISE BANDWIDTH. LARGE STEP SIGNALS (>10mV) CAUSE S1 TO TURN ON, SPEEDING UP THE TIME CONSTANT TO 1ms, FOR IMPROVED SETTLING. AS THE OUTPUT SETTLES BACK TO WITHIN 10mV, 51 TURNS OFF AGAIN, RESTORING THE 20ms TIME CONSTANT, FOR IMPROVED FILTERING. 600345 F04 Figure 4. Adaptive Filter R1 1M ILOAD 600345 F05 VLOAD LOAD Figure 5. Precision 1.25µA Current Source 16 – + + A1 1/4 LT6005 200k A2 1/4 LT6005 + – + 249k –INB –INA – VS LT6003 – 249k 249k 249k VIN 100mV/DIV VOUT 50mV/DIV VOUT COMPOUT 5V/DIV 2ms/DIV 600345 F04b + – S1: FAIRCHILD FSA1157 VCC = 1.8V TO 5V ICC = 10µA, RISING TO 20µA WITH LARGE SIGNAL VS R2 390k LT1389-1.25 1.25V ILOAD = R1 VS = VLOAD + 2V 600345f LT6003/LT6004/LT6005 PACKAGE DESCRIPTION DC Package 4-Lead Plastic DFN (2mm × 2mm) (Reference LTC DWG # 05-08-1724 Rev A) 1.30 ± 0.05 2.00 ± 0.05 1.35 ±0.05 1.00 ±0.05 PACKAGE OUTLINE 0.25 ± 0.05 0.45 BSC 1.35 REF RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS APPLY SOLDER MASK TO AREAS THAT ARE NOT SOLDEDED R = 0.05 TYP 1.35 ± 0.10 1.00 ± 0.10 R = 0.115 TYP PIN 1 BAR TOP MARK (SEE NOTE 6) 2.00 ± 0.10 (4 SIDES) PIN 1 NOTCH R = 0.20 OR 0.25 × 45° CHAMFER 1 0.23 ± 0.05 0.45 BSC 0.40 ± 0.05 0.200 REF 0.75 ± 0.05 0.70 ± 0.05 4 1.35 REF BOTTOM VIEW—EXPOSED PAD (DC4) DFN 0506 REV A NOTE: 1. DRAWING IS NOT A JEDEC PACKAGE OUTLINE 2. DRAWING NOT TO SCALE 3. ALL DIMENSIONS ARE IN MILLIMETERS 0.00 – 0.05 4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE 5. EXPOSED PAD SHALL BE SOLDER PLATED 6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON THE TOP AND BOTTOM OF PACKAGE S5 Package 5-Lead Plastic TSOT-23 (Reference LTC DWG # 05-08-1635) 0.62 MAX 0.95 REF 2.90 BSC (NOTE 4) 1.22 REF 3.85 MAX 2.62 REF 1.4 MIN 2.80 BSC 1.50 – 1.75 (NOTE 4) PIN ONE RECOMMENDED SOLDER PAD LAYOUT PER IPC CALCULATOR 0.30 – 0.45 TYP 5 PLCS (NOTE 3) 0.95 BSC 0.80 – 0.90 0.20 BSC 1.00 MAX DATUM ‘A’ 0.01 – 0.10 0.30 – 0.50 REF NOTE: 1. DIMENSIONS ARE IN MILLIMETERS 2. DRAWING NOT TO SCALE 3. DIMENSIONS ARE INCLUSIVE OF PLATING 0.09 – 0.20 (NOTE 3) 1.90 BSC S5 TSOT-23 0302 REV B 4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR 5. MOLD FLASH SHALL NOT EXCEED 0.254mm 6. JEDEC PACKAGE REFERENCE IS MO-193 600345f 17 LT6003/LT6004/LT6005 PACKAGE DESCRIPTION DD Package 8-Lead Plastic DFN (3mm × 3mm) (Reference LTC DWG # 05-08-1698) 0.675 ± 0.05 3.5 ± 0.05 1.65 ± 0.05 2.15 ± 0.05 (2 SIDES) PACKAGE OUTLINE 0.25 ± 0.05 0.50 BSC 2.38 ± 0.05 (2 SIDES) RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS R = 0.115 TYP 5 0.38 ± 0.10 8 3.00 ± 0.10 (4 SIDES) PIN 1 TOP MARK (NOTE 6) 1.65 ± 0.10 (2 SIDES) (DD) DFN 1203 0.200 REF 0.75 ± 0.05 4 0.25 ± 0.05 2.38 ± 0.10 (2 SIDES) 1 0.50 BSC 0.00 – 0.05 BOTTOM VIEW—EXPOSED PAD NOTE: 1. DRAWING TO BE MADE A JEDEC PACKAGE OUTLINE M0-229 VARIATION OF (WEED-1) 2. DRAWING NOT TO SCALE 3. ALL DIMENSIONS ARE IN MILLIMETERS 4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE 5. EXPOSED PAD SHALL BE SOLDER PLATED 6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON TOP AND BOTTOM OF PACKAGE MS8 Package 8-Lead Plastic MSOP (Reference LTC DWG # 05-08-1660) 0.889 ± 0.127 (.035 ± .005) 3.00 ± 0.102 (.118 ± .004) (NOTE 3) 0.52 (.0205) REF 8 7 65 5.23 (.206) MIN 3.20 – 3.45 (.126 – .136) 0.254 (.010) DETAIL “A” 0° – 6° TYP 4.90 ± 0.152 (.193 ± .006) 3.00 ± 0.102 (.118 ± .004) (NOTE 4) GAUGE PLANE 0.42 ± 0.038 (.0165 ± .0015) TYP 0.65 (.0256) BSC DETAIL “A” 0.18 (.007) 1 23 4 0.53 ± 0.152 (.021 ± .006) RECOMMENDED SOLDER PAD LAYOUT 1.10 (.043) MAX 0.86 (.034) REF SEATING PLANE NOTE: 1. DIMENSIONS IN MILLIMETER/(INCH) 2. DRAWING NOT TO SCALE 3. DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. MOLD FLASH, PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.152mm (.006") PER SIDE 4. DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS. INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.152mm (.006") PER SIDE 5. LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.102mm (.004") MAX 0.22 – 0.38 (.009 – .015) TYP 0.65 (.0256) BSC 0.127 ± 0.076 (.005 ± .003) MSOP (MS8) 0204 600345f 18 LT6003/LT6004/LT6005 PACKAGE DESCRIPTION DHC Package 16-Lead Plastic DFN (5mm × 3mm) (Reference LTC DWG # 05-08-1706) 5.00 ± 0.10 (2 SIDES) 0.65 ± 0.05 3.50 ± 0.05 3.00 ± 0.10 (2 SIDES) PACKAGE OUTLINE 1.65 ± 0.10 (2 SIDES) PIN 1 NOTCH (DHC16) DFN 1103 R = 0.115 TYP R = 0.20 TYP 9 16 0.40 ± 0.10 1.65 ± 0.05 (2 SIDES) 2.20 ± 0.05 PIN 1 TOP MARK (SEE NOTE 6) 8 0.200 REF 0.75 ± 0.05 4.40 ± 0.10 (2 SIDES) BOTTOM VIEW—EXPOSED PAD 1 0.25 ± 0.05 0.50 BSC 0.25 ± 0.05 0.50 BSC 4.40 ± 0.05 (2 SIDES) RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS 0.00 – 0.05 NOTE: 1. DRAWING PROPOSED TO BE MADE VARIATION OF VERSION (WJED-1) IN JEDEC PACKAGE OUTLINE MO-229 2. DRAWING NOT TO SCALE 3. ALL DIMENSIONS ARE IN MILLIMETERS 4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE 5. EXPOSED PAD SHALL BE SOLDER PLATED 6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON THE TOP AND BOTTOM OF PACKAGE GN Package 16-Lead Plastic SSOP (Narrow .150 Inch) (Reference LTC DWG # 05-08-1641) .189 – .196* (4.801 – 4.978) .015 ± .004 × 45° (0.38 ± 0.10) .007 – .0098 (0.178 – 0.249) .016 – .050 (0.406 – 1.270) .0532 – .0688 (1.35 – 1.75) .004 – .0098 (0.102 – 0.249) .009 (0.229) REF 16 15 14 13 12 11 10 9 .045 ± .005 0° – 8° TYP .008 – .012 (0.203 – 0.305) TYP .0250 (0.635) BSC .229 – .244 (5.817 – 6.198) .150 – .157** (3.810 – 3.988) .254 MIN .150 – .165 NOTE: 1. CONTROLLING DIMENSION: INCHES INCHES 2. DIMENSIONS ARE IN (MILLIMETERS) 3. DRAWING NOT TO SCALE *DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE **DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE 1 23 4 56 7 8 .0165 ± .0015 .0250 BSC RECOMMENDED SOLDER PAD LAYOUT GN16 (SSOP) 0204 600345f Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights. 19 LT6003/LT6004/LT6005 TYPICAL APPLICATION Gain of –50 Ultra Low Power Precision Gas Sensor Amplifier 20k 976k* VS+ 1M 1% 1M 1% 1M 1% VS– 1M 1% N N C1 0.1µF X7R GAIN = –50 VOS = 5µV TYPICAL (INPUT REFERRED), AVERAGED ISUPPLY = 3µA VSUPPLY = ±0.9V TO ±2.7V S1, S2: FAIRCHILD FSA1157 (NC) S3: FAIRCHILD FSA1156 (NO) CONNECT SWITCH GND PINS TO VS– *20M FOR AV = 1000 OXYGEN SENSOR VS+ NULL READ VS– S1, S2 ARE NORMALLY CLOSED (N = LOW). S3 IS NORMALLY OPEN (N = LOW). A1's OUTPUT OFFSET IS STORED ON C1. WHEN A READING IS DESIRED, SWITCHES REVERSE STATE, AND A2 ACTS AS A DIFFERENCE AMPLIFIER FROM THE STORED OFFSET. NULL PHASE SHOULD BE ASSERTED 200ms OR MORE. A2 SETTLES 50ms AFTER READ PHASE IS ASSERTED, WITH WORST CASE ROOM TEMPERATURE DROOP RATE IS 0.8µV/ms DOMINATED BY ANALOG SWITCH LEAKAGE CURRENT. 600345 TA02 RELATED PARTS PART NUMBER DESCRIPTION ® COMMENTS 950µV VOS(MAX), Gain Bandwidth = 200kHz 375µV VOS(MAX), Gain Bandwidth = 2.7kHz Gain of 5 Stable, Gain Bandwidth = 12kHz SOT-23, 800µV VOS(MAX), IS = 55µA(MAX), Gain Bandwidth = 200kHz, Shutdown Pin 120µV VOS(MAX), Gain Bandwidth = 60kHz 600µV VOS(MAX), Gain Bandwidth = 50kHz, Shutdown LT1490A/LT1491A 50µA Dual/Quad Over-The-Top Rail-to-Rail Input and Output Op Amps LT1494/LT1495/ LT1496 LT1672/LT1673/ LT1674 LT1782 LT2178/LT2179 LT6000/LT6001/ LT6002 1.5µA Max Single/Dual/Quad Over-The-Top Precision Rail-to-Rail Input and Output Op Amps 2µA Max, AV ≥ 5, Single/Dual/Quad Over-The-Top Precision Rail-to-Rail Input and Output Op Amps Micropower, Over-The-Top, SOT-23, Rail-to-Rail Input and Output Op Amps 17µA Dual/Quad Single Supply Op Amps 1.8V, 16µA Max Single/Dual/Quad Precision Rail-to-Rail Op Amps Over-The-Top is a registered trademark of Linear Technology Corporation. 20 Linear Technology Corporation (408) 432-1900 ● FAX: (408) 434-0507 ● 1630 McCarthy Blvd., Milpitas, CA 95035-7417 www.linear.com © LINEAR TECHNOLOGY CORPORATION 2006 + B S1 A – A2 1/2 LT6004 VOUT = 500mV IN AIR (DURING READ PHASE) 600345f LT 0906 • PRINTED IN USA + CITY TECHNOLOGY MODEL 40X(2) OXYGEN SENSOR BURNS 100µA IN AIR 20k (~21% O2) A S3 B – A N 100Ω S2 + B – A1 1/2 LT6004