LT6002

LT6000/LT6001/LT6002 Single, Dual and Quad, 1.8V, 13µA Precision Rail-to-Rail Op Amps FEATURES ■ DESCRIPTIO ■ ■ ■ ■ ■ Ideal for Battery-Powered Applications – Low Voltage: 1.8V to 16V Operation – Low Current: 16µA/Amplifier Max – Small Packages: DFN, MSOP, SSOP – Shutdown to 1.5µA Max (LT6000, LT6001DD) Low Offset Voltage: 600µV Max Rail-to-Rail Input and Output Fully Specified on 1.8V and 5V Supplies Operating Temperature Range: –40°C to 85°C Single Available in DFN Dual Available in MSOP and DFN Quad Available in SSOP and DFN APPLICATIO S ■ ■ ■ ■ ■ The LT®6000/LT6001/LT6002 are single, dual and quad precision rail-to-rail input and output operational amplifiers. Designed to maximize battery life in always-on applications, the devices will operate on supplies down to 1.8V while drawing only 13µA quiescient current. The low supply current and low voltage operation is combined with precision specifications; input offset is guaranteed less than 600µV. The performance on 1.8V supplies is fully specified and guaranteed over temperature. A shutdown feature available in the LT6000 and the 10-lead dual LT6001 version can be used to extend battery life by allowing the amplifiers to be switched off during periods of inactivity. The LT6000 is available in a tiny, dual fine pitch leadless DFN package. The LT6001 is available in the 8-pin MSOP package; a 10-lead version with the shutdown feature is available in DFN package. The quad LT6002 is available in the 16-pin SSOP package and the 16-pin DFN package. These devices are specified over the commercial and industrial temperature range. , LTC and LT are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Gas Sensing Portable Instrumentation Battery- or Solar-Powered Systems Low Voltage Signal Processing Micropower Active Filters TYPICAL APPLICATIO OXYGEN SENSOR CITY TECHNOLOGY 40X(2) Micropower Oxygen Sensor 10k 25 Start-Up Characteristics Supply Current vs Supply Voltage SUPPLY CURRENT PER AMPLIFIER (µA) AV = 1 VCM = 0.5V 20 TA = 125°C +VE www.citytech.com VS 200k 20k + – VS 1/2 LT6001 60012 TA01a + – –VE 100Ω 330Ω 1/2 LT6001 + 15 TA = 25°C TA = –55°C VOUT = 1V IN AIR, 0V WITHOUT OXYGEN 330Ω – 10 5 VS = 1.8V ISUPPLY = 145µA IN AIR, 45µA WITHOUT OXYGEN 0 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 TOTAL SUPPLY VOLTAGE (V) 2.0 U 60012 TA01b U U 600012fa 1 LT6000/LT6001/LT6002 ABSOLUTE AXI U RATI GS (Note 1) Junction Temperature (DFN Packages) ................ 125°C Storage Temperature Range .................. –65°C to 150°C Storage Temperature Range DFN Packages ................................... –65°C to 125°C Lead Temperature (Soldering, 10 sec) MSOP, SSOP Packages .................................... 300°C Total Supply Voltage (V+ to V–) .............................. 18V Input Current ..................................................... ±10mA SHDN Pin Voltage (Note 7) ............................... V– to V+ Output Short Current Duration (Note 2) ......... Indefinite Operating Temperature Range (Note 3) ... –40°C to 85°C Specified Temperature Range (Note 4) .... –40°C to 85°C Junction Temperature ........................................... 150°C PACKAGE/ORDER I FOR ATIO TOP VIEW SHDN 1 –IN 2 +IN 3 7 6 V+ 5 V– 4 OUT OUT A IN– A IN+ A V– 1 2 3 4 DCB PACKAGE 6-LEAD (2mm × 3mm) PLASTIC DFN TJMAX = 125°C, θJA = 160°C/W (NOTE 2) EXPOSED PAD (PIN 7) IS CONNECTED TO V– (PIN 5) MS8 PACKAGE 8-LEAD PLASTIC MSOP TJMAX = 150°C, θJA = 250°C/W ORDER PART NUMBER LT6000CDCB LT6000IDCB DCB PART MARKING* LCDM LCDM TOP VIEW ORDER PART NUMBER LT6001CMS8 LT6001IMS8 OUT A IN– A IN+ A V+ IN+ B IN– B OUT B NC 1 2 3 4 5 6 7 8 + –B – +A 16 OUT D – – 15 IN D D+ 14 IN+ D 13 V – + + 12 IN C C– 11 IN– C 10 OUT C 9 NC GN PACKAGE 16-LEAD NARROW PLASTIC SSOP TJMAX = 150°C, θJA = 135°C/W ORDER PART NUMBER LT6002CGN LT6002IGN GN PART MARKING 6002 6002I 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/ *Temperature grades are identified on the shipping container. Consult LTC Marketing for parts specified with wider operating temperature ranges. 600012fa 2 U U W WW U W TOP VIEW TOP VIEW 8 V+ – + – + OUT A 1 IN– A 2 IN+ A 3 V– 4 NC 5 11 10 V+ 9 OUT B 8 IN– B 7 IN+ B 6 SHDN 7 OUT B 6 IN– B 5 IN+ B DD PACKAGE 10-LEAD (3mm ´ 3mm) PLASTIC DFN TJMAX = 125°C, θJA = 160°C/W (NOTE 2) EXPOSED PAD (PIN 11) IS CONNECTED TO V– (PIN 4) MS8 PART MARKING* ORDER PART NUMBER DD PART MARKING* LBVH LBVH 16 OUT D LTBVD LTBVD OUT A IN– A IN+ A V+ IN B IN– B + LT6001CDD LT6001IDD TOP VIEW 1 2 3 4 5 6 7 8 B C A 17 D 15 IN– D 14 IN+ D 13 V – 12 IN+ C 11 IN– C 10 OUT C 9 NC OUT B NC DHC PACKAGE 16-LEAD (5mm ´ 3mm) DFN TJMAX = 125°C, θJA = 160°C/W (NOTE 2) EXPOSED PAD (PIN 17) IS CONNECTED TO V– (PIN 13) ORDER PART NUMBER LT6002CDHC LT6002IDHC DHC PART MARKING* 6002 6002 LT6000/LT6001/LT6002 The ● denotes specifications which apply over the full specified temperature range, otherwise specifications are TA = 25°C. VS = 1.8V, 0V, VCM = VOUT = 0.5V. For the LT6000 and the LT6001DD, VSHDN = V+, unless otherwise noted. SYMBOL VOS PARAMETER Input Offset Voltage CONDITIONS LT6001MS8 0°C ≤ TA ≤ 70°C –40°C ≤ TA ≤ 85°C LT6000DCB, LT6001DD, LT6002GN 0°C ≤ TA ≤ 70°C –40°C ≤ TA ≤ 85°C LT6002DHC 0°C ≤ TA ≤ 70°C –40°C ≤ TA ≤ 85°C VCM = V+ LT6001MS8 VCM = V+ LT6000DCB, LT6001DD, LT6002GN ● ELECTRICAL CHARACTERISTICS MIN ● ● TYP 200 250 ● ● 300 ● ● MAX 600 800 950 750 1000 1200 900 1100 1300 1000 1300 1200 1550 1300 1700 5 UNITS µV µV µV µV µV µV µV µV µV µV µV µV µV µV µV µV/°C nA nA nA nA nA nA µVP-P nV/√Hz fA/√Hz GΩ MΩ pF dB dB dB V dB V 400 ● 500 VCM = V+ LT6002DHC ● 500 ● ● ● ● ● ● ● ∆VOS/∆T IB Input Offset Voltage Drift (Note 5) Input Bias Current IOS Input Offset Current en in RIN CIN CMRR Input Noise Voltage Input Voltage Noise Density Input Current Noise Density Input Resistance Input Capacitance Common Mode Rejection Ratio VCM = 0.5V VCM = 0.5V VCM = V– VCM = V+ VCM = 0.5V VCM = V– VCM = V+ 0.1Hz to 10Hz f = 1kHz f = 1kHz Common Mode (VCM = 0V to 0.6V) Differential VCM = 0V to 0.6V, 0°C ≤ TA ≤ 70°C VCM = 0.1V to 0.6V, –40°C ≤ TA ≤ 85°C VCM = 0V to 1.8V VS = 1.8V to 16V VCM = VO = 0.5V VCM = VO = 0.5V VO = 0.25V to 1.25V RL = 100k to GND RL = 100k to GND RL = 10k to GND RL = 10k to GND Input Overdrive = 30mV No Load ISINK = 100µA Input Overdrive = 30mV No Load ISOURCE = 100µA RL = 10k to GND –5 –5 10 ● ● ● ● ● ● PSRR Input Voltage Range Power Supply Rejection Ratio Minimum Supply Large-Signal Gain 82 82 60 0 86 1.8 25 20 40 25 2 –2 –2 4 0.2 0.2 0.4 1.2 75 25 3.5 25 5 96 96 78 100 10 1 1 2 1.8 AVOL 65 125 ● ● ● ● ● ● ● V/mV V/mV V/mV V/mV 60 200 60 225 250 mV mV mV mV mV VOL Output Swing Low (Note 6) 30 120 30 140 160 VOH Output Swing High (Note 6) 600012fa 3 LT6000/LT6001/LT6002 The ● denotes specifications which apply over the full specified temperature range, otherwise specifications are TA = 25°C. VS = 1.8V, 0V, VCM = VOUT = 0.5V. For the LT6000 and the LT6001DD, VSHDN = V+, unless otherwise noted. SYMBOL ISC PARAMETER Short-Circuit Current CONDITIONS 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 0°C ≤ TA ≤ 70°C –40°C ≤ TA ≤ 85°C VSHDN = 0.3V VSHDN = 1.8V VSHDN = 0V VSHDN = 0.3V (V– ≤ VOUT ≤ V+) MIN 2 1 0.4 0.7 0.4 0.15 TYP 4 MAX UNITS mA mA mA mA mA mA µA µA µA µA nA nA nA V V µs µs kHz kHz kHz V/ms V/ms V/ms kHz ELECTRICAL CHARACTERISTICS ● ● ● ● ● ● ● ● ● ● ● ● 2 IS Supply Current per Amplifier 13 ISHDN Total Supply Current in Shutdown (Note 7) SHDN Pin Current (Note 7) Shutdown Output Leakage Current (Note 7) SHDN Pin Input Low Voltage (Note 7) SHDN Pin Input High Voltage (Note 7) Turn On Time (Note 7) Turn Off Time (Note 7) Gain Bandwidth Product (Note 8) –300 0.8 0 –200 20 16 22 24 1.5 30 VL VH tON tOFF GBW 0.3 1.5V 400 100 32 28 24 9 7 5 2.3 50 SR Slew Rate FPBW Full Power Bandwidth (Note 9) VSHDN = 0V to 1.8V, RL = 10k VSHDN = 1.8V to 0V, RL = 10k Freq = 1kHz 0°C ≤ TA ≤ 70°C –40°C ≤ TA ≤ 85°C AV = –1, VOUT = 0.25V to 1.5V Measure 0.5V to 1.25V, 0°C ≤ TA ≤ 70°C –40°C ≤ TA ≤ 85°C VOUT = 1.25VP-P ● ● ● ● 15 3.8 600012fa 4 LT6000/LT6001/LT6002 The ● denotes specifications which apply over the full specified temperature range, otherwise specifications are TA = 25°C. VS = 5V, 0V, VCM = VOUT = 1/2 Supply. For the LT6000 and the LT6001DD, VSHDN = V+, unless otherwise noted. SYMBOL VOS PARAMETER Input Offset Voltage CONDITIONS LT6001MS8 0°C ≤ TA ≤ 70°C –40°C ≤ TA ≤ 85°C LT6000DCB, LT6001DD, LT6002GN 0°C ≤ TA ≤ 70°C –40°C ≤ TA ≤ 85°C LT6002DHC 0°C ≤ TA ≤ 70°C –40°C ≤ TA ≤ 85°C VCM = V+ LT6001MS8 VCM = V+ LT6000DCB, LT6001DD, LT6002GN ● ● ● ELECTRICAL CHARACTERISTICS MIN TYP 200 MAX 600 800 950 750 1000 1200 900 1100 1300 1000 1300 1200 1550 1300 1700 5 UNITS µV µV µV µV µV µV µV µV µV µV µV µV µV µV µV µV/°C nA nA nA nA nA nA µVP-P nV/√Hz fA/√Hz GΩ MΩ pF dB dB dB 250 ● ● 300 ● ● 400 ● 500 VCM = V+ LT6002DHC ● 500 ● ● ● ● ● ● ● ∆VOS/∆T IB Input Offset Voltage Drift (Note 5) Input Bias Current VCM = VS/2 VCM = VS/2 VCM = V– VCM = V+ VCM = VS/2 VCM = V– VCM = V+ 0.1Hz to 10Hz f = 1kHz f = 1kHz Common Mode (VCM = 0V to 3.8V) Differential VCM = 0V to 3.8V, 0°C ≤ TA ≤ 70°C VCM = 0.1V to 3.8V, –40°C ≤ TA ≤ 85°C VCM = 0V to 5V VS = 1.8V to 16V VCM = VO = 0.5V VO = 0.5V to 4.5V RL = 100k to VS/2 RL = 100k to VS/2 RL = 10k to VS/2 RL = 10k to VS/2 RL = 10k to GND RL = 10k to GND Input Overdrive = 30mV No Load ISINK = 100µA ISINK = 500µA 2 –6 –6 –2 –2 4 0.2 0.2 0.4 1.2 75 25 3.5 25 5 105 105 86 12 1.2 1.2 2.4 IOS Input Offset Current Input Noise Voltage en in RIN CIN CMRR Input Voltage Noise Density Input Current Noise Density Input Resistance Input Capacitance Common Mode Rejection Ratio ● ● ● ● ● ● ● 8.5 90 90 68 0 86 1.8 30 25 16 10 160 80 Input Voltage Range PSRR Power Supply Rejection Ratio Minimum Supply AVOL Large-Signal Gain 5 100 V dB V 60 25 1000 ● ● ● ● ● ● V/mV V/mV V/mV V/mV V/mV V/mV 60 200 300 mV mV mV 600012fa VOL Output Swing Low (Note 6) 30 120 180 5 LT6000/LT6001/LT6002 The ● denotes specifications which apply over the full specified temperature range, otherwise specifications are TA = 25°C. VS = 5V, 0V, VCM = VOUT = 1/2 Supply. For the LT6000 and the LT6001DD, VSHDN = V+, unless otherwise noted. SYMBOL VOH PARAMETER Output Swing High (Note 6) CONDITIONS Input Overdrive = 30mV No Load ISOURCE = 100µA RL = 10k to GND 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 0°C ≤ TA ≤ 70°C –40°C ≤ TA ≤ 85°C VS = ±8V Total Supply Current in Shutdown (Note 7) ISHDN SHDN Pin Current (Note 7) Shutdown Output Leakage Current (Note 7) VL VH tON tOFF GBW SHDN Pin Input Low Voltage (Note 7) SHDN Pin Input High Voltage (Note 7) Turn On Time (Note 7) Turn Off Time (Note 7) Gain Bandwidth Product VSHDN = 0V to 5V, RL = 10k VSHDN = 5V to 0V, RL = 10k Freq = 1kHz 0°C ≤ TA ≤ 70°C –40°C ≤ TA ≤ 85°C AV = –1, VOUT = 0.5V to 4.5V Measure 1V to 4V, 0°C ≤ TA ≤ 70°C –40°C ≤ TA ≤ 85°C VOUT = 4VP-P ● ● ● ● ● ● ● ● ● ● ● ● ● ELECTRICAL CHARACTERISTICS MIN TYP 30 140 160 MAX 60 225 400 UNITS mV mV mV mA mA mA mA mA mA ISC Short-Circuit Current 5 4 3 3.5 2.5 1.5 10 7.5 15 18 24 27 25 34 5 30 µA µA µA µA µA µA nA nA nA V V µs µs kHz kHz kHz V/ms V/ms V/ms kHz 20 ● ● ● ● ● ● ● VSHDN = 0.3V VSHDN = 5V VSHDN = 0V VSHDN = 0.3V (V– ≤ VOUT ≤ V+) 3 –1000 0 –650 20 0.3 4.7 400 100 40 35 30 11 8 6 0.87 60 SR Slew Rate 18 FPBW Full Power Bandwidth (Note 9) 1.4 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 the absolute maximum. This depends on the power supply voltage and how many amplifiers are shorted. The θJA specified for the 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 LT6000C/LT6000I/LT6001C/LT6001I and LT6002C/LT6002I are guaranteed functional over the temperature range of –40°C to 85°C. Note 4: The LT6000C/LT6001C/LT6002C is guaranteed to meet specified performance from 0°C to 70°C. The LT6000C/LT6001C/LT6002C 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 LT6000I/LT6001I/ LT6002I is guaranteed to meet specified performance from –40°C to 85°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: Specifications apply to the LT6000 or the LT6001DD with shutdown. Note 8: Guaranteed by correlation to slew rate at VS = 1.8V and GBW at VS = 5V. Note 9: Full-power bandwidth is calculated from the slew rate: FPBW = SR/πVP-P. 600012fa 6 LT6000/LT6001/LT6002 TYPICAL PERFOR A CE CHARACTERISTICS VOS Distribution 30 25 VS = 5V, 0V VCM = 2.5V MS8 PACKAGE SUPPLY CURRENT PER AMPLIFIER (µA) PERCENT OF UNITS (%) PERCENT OF UNITS (%) 20 15 10 5 0 –600 400 –400 –200 0 200 INPUT OFFSET VOLTAGE (µV) Change in Input Offset Voltage vs Total Supply Voltage 300 CHANGE IN OFFSET VOLTAGE (µV) VCM = 0.5V 250 OFFSET VOLTAGE (µV) 200 100 0 –100 –100 –300 TA = 125°C OFFSET VOLTAGE (µV) 200 150 100 50 0 –50 1 2 1.5 2.5 TOTAL SUPPLY VOLTAGE (V) 3 60012 G35 TA = 25°C TA = 125°C TA = –55°C –100 Input Bias Current vs Common Mode Voltage 12.5 10.0 OUTPUT HIGH SATURATION VOLTAGE (V) 7.5 5.0 2.5 0 –2.5 –5.0 TA = 125°C TA = 25°C TA = 125°C 0.1 TA = –55°C OUTPUT LOW SATURATION VOLTAGE (V) VS = 5V, 0V INPUT BIAS CURRENT (nA) TA = 25°C TA = –55°C 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 COMMON MODE VOLTAGE (V) 60012 G07 UW 600 60012 G01 TC VOS Distribution 20 VS = 5V, 0V 18 VCM = 2.5V MS8, GN16, 16 DD10 PACKAGES 14 –40°C TO 85°C 12 10 8 6 4 2 0 –5 –4 –3 –2 –1 0 1 2 3 DISTRIBUTION (µV/°C) 4 5 Supply Current vs Supply Voltage 35 30 25 20 15 10 TA = –55°C 5 0 0 2 4 6 8 10 12 14 TOTAL SUPPLY VOLTAGE (V) 16 18 VCM = 0.5V TA = 125°C TA = 25°C 20012 G02 600012 G03 Input Offset Voltage vs Total Supply Voltage 400 300 VCM = 0.5V TYPICAL PART 400 300 200 Input Offset Voltage vs Input Common Mode Voltage VS = 5V, 0V TYPICAL PART TA = 125°C 100 TA = 25°C 0 TA = –55°C TA = 25°C TA = –55°C –100 –200 0 2 4 6 8 10 12 14 TOTAL SUPPLY VOLTAGE (V) 16 18 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 INPUT COMMON MODE VOLTAGE (V) 5 600012 G05 60012 G06 Output Saturation Voltage vs Load Current (Output High) 1.0 VS = 5V, 0V INPUT OVERDRIVE = 30mV Output Saturation Voltage vs Load Current (Output Low) 1.0 VS = 5V, 0V INPUT OVERDRIVE = 30mV TA = 25°C TA = 125°C 0.1 TA = –55°C 0.01 0.001 0.01 0.1 1 SOURCING LOAD CURRENT (mA) 10 60012 G08 0.01 0.001 0.01 0.1 1 SINKING LOAD CURRENT (mA) 10 60012 G08 600012fa 7 LT6000/LT6001/LT6002 TYPICAL PERFOR A CE CHARACTERISTICS Output Saturation Voltage vs Input Overdrive 100 OUTPUT SATURATION VOLTAGE (mV) 90 80 70 60 50 40 30 20 10 0 0 5 15 20 25 10 INPUT OVERDRIVE (mV) 30 OUTPUT HIGH OUTPUT LOW OUTPUT SHORT-CIRCUIT CURRENT (mA) 12 10 8 TA = 25°C TA = 125°C TA = –55°C OUTPUT SHORT-CIRCIUT CURRENT (mA) VS = 5V, 0V NO LOAD 0.1Hz to 10Hz Output Voltage Noise VS = ± 2.5V 100 NOISE VOLTAGE (nV/√Hz) 90 VCM = 4.5V 80 VCM = 2.5V INPUT NOISE CURRENT DENSITY (fA/√Hz) NOISE VOLTAGE (500nV/DIV) 0 1 2 3 4567 TIME (SECONDS) Open-Loop Gain 60 CHANGE IN INPUT OFFSET VOLTAGE (µV) CHANGE IN INPUT OFFSET VOLTAGE (µV) CHANGE IN INPUT OFFSET VOLTAGE (µV) 40 20 0 –20 –40 –60 VS = 1.8V, 0V VCM = 0.5V TA = 25°C RL = 10k RL = 100k 0 0.3 0.6 0.9 1.2 OUTPUT VOLTAGE (V) 8 UW 60012 G10 Output Short-Circuit Current vs Total Supply Voltage (Sourcing) 14 VCM = 0.5V OUTPUT SHORTED TO V– 10 Output Short-Circuit Current vs Total Supply Voltage (Sinking) VCM = 0.5V OUTPUT SHORTED TO V+ 8 TA = 125°C 6 TA = 25°C 6 4 2 0 1 4 TOTAL SUPPLY VOLTAGE (V) 2 3 5 60012 G11 4 TA = –55°C 2 0 1 3 2 4 TOTAL SUPPLY VOLTAGE (V) 5 60012 G12 Noise Voltage Density vs Frequency VS = 5V, 0V TA = 25°C 1000 Input Noise Current vs Frequency VS = 5V, 0V TA = 25°C 100 VCM = 4.5V 70 VCM = 2.5V 60 8 9 10 50 1 10 100 FREQUENCY (Hz) 1000 60012 G14 10 1 10 100 FREQUENCY (Hz) 1000 60012 G15 60012 G13 Open-Loop Gain 40 200 VS = 5V, 0V VCM = 2.5V TA = 25°C 150 100 50 0 –50 Open-Loop Gain VS = ±2.5V TA = 25°C RL = 10k 20 0 RL = 10k RL = 100k RL = 100k –20 –100 –150 2 2.5 1.5 1.8 –40 0 1 3 4 2 OUTPUT VOLTAGE (V) 5 60012 G17 – 200 –2.5 –2 –1.5 –1 –0.5 0 0.5 1 1.5 OUTPUT VOLTAGE (V) 60012 G16 20012 G18 600012fa LT6000/LT6001/LT6002 TYPICAL PERFOR A CE CHARACTERISTICS Gain Bandwidth and Phase Margin vs Temperature f = 1kHz PHASE MARGIN VS = 1.8V, 0V VCM = 0.5V VS = 5V, 0V VCM = 2.5V GAIN BANDWIDTH (kHz) SLEW RATE (V/ms) GAIN (dB) 80 VS = 5V, 0V 70 VCM = 2.5V 60 50 VS = 1.8V, 0V 40 VCM = 0.5V 30 GAIN BANDWIDTH 20 10 75 100 0 50 –50 –25 25 TEMPERATURE (°C) Gain Bandwidth and Phase Margin vs Supply Voltage RF = RG = 100k A V = –1 f = 1kHz PHASE MARGIN 70 65 60 55 50 COMMON MODE REJECTION RATIO (dB) OVERSHOOT (%) GAIN BANDWIDTH (kHz) 80 70 60 50 40 30 0 2 6 4 8 10 12 14 16 TOTAL SUPPLY VOLTAGE (V) 18 GAIN BANDWIDTH Power Supply Rejection Ratio vs Frequency 110 COMMON MODE REJECTION RATIO (dB) VS = ±2.5V TA = 25°C 90 70 50 30 OUTPUT IMPEDANCE (kΩ) OUTPUT IMPEDANCE (Ω) POSITIVE SUPPLY NEGATIVE SUPPLY 10 –10 0.01 0.1 1 10 FREQUENCY (kHz) UW 80 75 70 65 60 55 50 45 125 60012 G21 600012 G36 Slew Rate vs Temperature 35 30 25 20 15 10 5 –50 –25 Gain and Phase vs Frequency 70 120 PHASE VCM = 2.5V VCM = 4.5V VCM = 2.5V VCM = 4.5V 100 80 60 60 50 40 30 20 10 0 –10 –20 GAIN VS = 5V, 0V RF = RG = 100k AV = –1 1 10 100 FREQUENCY (kHz) 45 PHASE MARGIN (DEG) AV = –1 RF = RG = 100k RISING VS = 5V, 0V RISING VS = 1.8V, 0V FALLING VS = 1.8V, 0V FALLING VS = 5V, 0V PHASE (DEG) 40 20 0 –20 –40 –60 –80 1000 60012 G19 50 25 75 0 TEMPERATURE (°C) 100 125 –30 0.1 60012 G22 Capacitive Load Handling Overshoot vs Capacitive Load 50 VS = 5V, 0V 45 VCM = 2.5V 40 35 30 25 20 15 10 5 0 10 100 1000 CAPACITIVE LOAD (pF) 10000 60012 G23 Common Mode Rejection Ratio vs Frequency 100 90 80 70 60 50 40 30 0.1 VS = ±2.5V TA = 25°C PHASE MARGIN (DEG) AV = 1 AV = 2 AV = 5 1 10 FREQUENCY (kHz) 100 60012 G24 Output Impedance vs Frequency 10000 VS = ±2.5V TA = 25°C Disabled Output Impedance vs Frequency (LT6000/LT6001DD) 1000 VS = ±2.5V VPIN6(SHDN) = –2.5V 1000 AV = 10 100 100 10 AV = 1 10 1 1 100 60012 G25 0.1 0.01 0.1 1 10 FREQUENCY (kHz) 100 60012 G26 0 0.01 0.1 1 10 FREQUENCY (kHz) 100 60012 G27 600012fa 9 LT6000/LT6001/LT6002 TYPICAL PERFOR A CE CHARACTERISTICS Large-Signal Response 4.5V 1.5V 20mV/DIV 0.5V AV = 1 VS = 5V, 0V CL = 100pF RL = 10k 100µs/DIV Total Supply Current vs SHDN Pin Voltage (LT6001DD) SUPPLY CURRENT BOTH AMPLIFIERS (µA) VS = 1.8V, 0V TA = 125°C SUPPLY CURRENT BOTH AMPLIFIERS (µA) 50 40 30 TA = 25°C TA = –55°C 20 10 0 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 SHDN PIN VOLTAGE (V) 60012 G31 Supply Current vs SHDN Pin Voltage (LT6000) 30 25 SUPPLY CURRENT (µA) 20 15 10 5 0 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 SHDN PIN VOLTAGE (V) 60012 G37 VS = 1.8V, 0V TA = 125°C SUPPLY CURRENT (µA) 10 UW 60012 G28 Large-Signal Response Small-Signal Response 0.25V AV = 1 VS = 1.8V, 0V CL = 100pF RL = 10k 100µs/DIV 60012 G29 AV = 1 VS = ±2.5V CL = 100pF RL = 100k 10µs/DIV 60012 G30 Total Supply Current vs SHDN Pin Voltage (LT6001DD) 60 50 40 TA = 25°C 30 TA = –55°C 20 10 0 –5 –4 –3 –2 –1 0 1 2 3 SHDN PIN VOLTAGE (V) 4 5 VS = ± 5V TA = 125°C Shutdown Response (LT6000/LT6001DD) VSHDN 0V VOUT 0V VIN = 1V AV = 1 VS = 1.8V, 0V RL = 100k 500µs/DIV 60012 G33 60012 G32 Supply Current vs SHDN Pin Voltage (LT6000) 30 25 20 15 10 5 0 –5 –4 –3 –2 –1 0 1 2 3 SHDN PIN VOLTAGE (V) 4 5 TA = 25°C VS = ±5V TA = 125°C TA = 25°C TA = –55°C TA = –55°C 60012 G34 600012fa LT6000/LT6001/LT6002 SI PLIFIED SCHE ATIC V+ R4 Q16 Q17 Q1 Q2 R5 Q14 R8 7M R1 V– V+ Q7 IN+ SHDN V IN– + Q18 Q19 Q20 Q8 R6 APPLICATIO S I FOR ATIO Supply Voltage The positive supply of the LT6000/LT6001/LT6002 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 LT6000/LT6001/LT6002 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 1V 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 U W W UU W CM Q10 R2 30k Q11 Q3 Q4 Q5 Q6 C1 COMPLEMENTARY DRIVE GENERATOR OUT R3 D3 30k Q12 Q13 V– Q9 R7 Q15 V– Figure 1 the rest of the input common mode 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 The input bias current depends on which stage is active. The input bias current polarity depends on the input common mode voltage. When the PNP stage is active, the input bias currents flow out of the input pins. They flow in the opposite direction when the NPN stage is active. The offset error due to the input bias currents can be minimized by equalizing the noninverting and inverting source impedance. 600012fa 11 LT6000/LT6001/LT6002 APPLICATIO S I FOR ATIO 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 600µV max in the PNP stage. By trimming the input offset voltage of both input stages, the input offset voltage over the entire common mode range (CMRR) is typically 400µV, maintaining the precision characteristics of the amplifier. The input stage of the LT6000/LT6001/LT6002 incorporates phase reversal protection to prevent wrong polarity outputs from occurring when the inputs are driven up to 2V below the negative rail. 30k 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 LT6000/LT6001/LT6002 can swing to within 30mV of the positive rail with no load and within 30mV of the negative rail with no load. When monitoring input voltages within 30mV of the positive rail or within 30mV of the negative rail, gain should be taken to keep the output from clipping. The LT6000/LT6001/LT6002 can typically source 10mA on a single 5V supply, sourcing current is reduced to 4mA on a single 1.8V supply as noted in the electrical characteristics. 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. VS 30mV VS 20 SUPPLY CURRENT PER AMPLIFIER (µA) + – Output High 30mV Figure 2. Circuits for Start-Up Characteristics 12 U Start-Up and Output Saturation Characteristics Micropower op amps are often not micropower during start-up characteristics 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. Also, when the output saturates, the part may draw excessive current and pull down the supplies, compromising rail-to-rail performance. Figure 1 shows the start-up characteristics of the LT6000/LT6001/LT6002 for three limiting cases. The circuits are shown in Figure 2. 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. 18 16 14 12 10 8 6 4 2 0 0 0.5 1 1.5 2 2.5 3 3.5 4 SUPPLY VOLTAGE (V) 4.5 5 OUTPUT HIGH OUTPUT AT VS/2 OUTPUT LOW 60012 F01 W UU Figure 1. Start-Up Characteristics VS VS/2 + – Output Low + – 60012 F02 Output at VS/2 600012fa LT6000/LT6001/LT6002 APPLICATIO S I FOR ATIO The LT6000/LT6001/LT6002 outputs can swing to within a respectable 30mV of each rail and draw virtually no excessive supply current. Figure 3 compares the dual LT6001 to a competitive part. Both op amps are in unity gain and their outputs are driven into each rail. The supply current is shown when the op amps are in linear operation and when they are driven into each rail. As can be seen from Figure 3, the supply current of the competitive part increases 3-fold or 5-fold depending on which rail the output goes to whereas the LT6001 draws virtually no excessive current. VS = ±2.5V, AV = 1 COMPETITIVE PART VIN + – 4 3 2 1 0 –1 –2 –3 –3 LT6001 SUPPLY CURRENT PER AMPLIFIER 70 60 50 40 30 20 10 VOUT (V) VOUT –2 –1 0 VIN (V) 1 2 3 60012 F03 Figure 3. VOUT and ICC vs Input Voltage U 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. Shutdown The single LT6000 and the 10-lead dual LT6001 include a shutdown feature that disables the part reducing quiescent current and makes the output high impedance. The devices can be shut down by bringing the SHDN pin within 0.3V of V–. The amplifiers are guaranteed to shut down if the SHDN pin is brought within 0.3V of V–. The exact switchover point will be a function of the supply voltage. See the Typical Performance Characteristics curves Supply Current vs Shutdown Pin Voltage. When shut down the total supply current is about 0.8µA and the output leakage current is 20nA (V– ≤ VOUT ≤ V+). For normal operation the SHDN pin should be tied to V+. It can be left floating, however, parasitic leakage currents over 1µA at the SHDN pin may inadvertently place the part into shutdown. 600012fa W UU ICC (µA) 13 LT6000/LT6001/LT6002 TYPICAL APPLICATIO U Gain of 100 Amplifier (400kHz GBW on 30µA Supply) 0.9V (NiMH) VIN 3 + – 8 1 5 1/2 LT6001 2 + 1/2 LT6001 7 OUT –0.9V (NiMH) 90.9k 10k 6 – 90.9k 60012 TA02a 10k Gain vs Frequency 60 50 40 30 GAIN (dB) 20 10 0 –10 –20 –30 –40 100 1k 10k 100k FREQUENCY (Hz) 1M 60012 TA02b 600012fa 14 LT6000/LT6001/LT6002 PACKAGE DESCRIPTIO U DCB Package 6-Lead Plastic DFN (2mm × 3mm) (Reference LTC DWG # 05-08-1715) 0.70 ± 0.05 PACKAGE OUTLINE 0.25 ± 0.05 0.50 BSC 1.35 ± 0.05 (2 SIDES) RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS 2.00 ± 0.10 (2 SIDES) R = 0.05 TYP R = 0.115 TYP 4 6 0.40 ± 0.10 3.00 ± 0.10 (2 SIDES) PIN 1 BAR TOP MARK (SEE NOTE 6) 3 0.200 REF 0.75 ± 0.05 1 1.65 ± 0.10 (2 SIDES) PIN 1 NOTCH R0.20 OR 0.25 × 45° CHAMFER (DCB6) DFN 0405 3.55 ± 0.05 1.65 ± 0.05 (2 SIDES) 2.15 ± 0.05 0.25 ± 0.05 0.50 BSC 1.35 ± 0.10 (2 SIDES) 0.00 – 0.05 BOTTOM VIEW—EXPOSED PAD NOTE: 1. DRAWING TO BE MADE A JEDEC PACKAGE OUTLINE M0-229 VARIATION OF (TBD) 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 600012fa 15 LT6000/LT6001/LT6002 PACKAGE DESCRIPTIO U MS8 Package 8-Lead Plastic MSOP (Reference LTC DWG # 05-08-1660) 0.889 ± 0.127 (.035 ± .005) 3.20 – 3.45 (.126 – .136) 5.23 (.206) MIN 0.42 ± 0.038 (.0165 ± .0015) TYP 0.65 (.0256) BSC 3.00 ± 0.102 (.118 ± .004) (NOTE 3) 8 7 65 0.52 (.0205) REF RECOMMENDED SOLDER PAD LAYOUT DETAIL “A” 0° – 6° TYP 4.90 ± 0.152 (.193 ± .006) 0.254 (.010) GAUGE PLANE 3.00 ± 0.102 (.118 ± .004) (NOTE 4) 0.53 ± 0.152 (.021 ± .006) DETAIL “A” 0.18 (.007) SEATING PLANE 1 23 4 1.10 (.043) MAX 0.86 (.034) REF 0.65 (.0256) NOTE: BSC 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 0.127 ± 0.076 (.005 ± .003) MSOP (MS8) 0204 600012fa 16 LT6000/LT6001/LT6002 PACKAGE DESCRIPTIO U DD Package 10-Lead (3mm × 3mm) Plastic DFN (Reference LTC DWG # 05-08-1699) 0.675 ± 0.05 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 6 0.38 ± 0.10 10 3.00 ± 0.10 (4 SIDES) PIN 1 TOP MARK (SEE NOTE 6) 5 0.200 REF 0.75 ± 0.05 2.38 ± 0.10 (2 SIDES) BOTTOM VIEW—EXPOSED PAD NOTE: 1. DRAWING TO BE MADE A JEDEC PACKAGE OUTLINE M0-229 VARIATION OF (WEED-2). CHECK THE LTC WEBSITE DATA SHEET FOR CURRENT STATUS OF VARIATION ASSIGNMENT 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 1 1.65 ± 0.10 (2 SIDES) (DD10) DFN 1103 3.50 ± 0.05 1.65 ± 0.05 2.15 ± 0.05 (2 SIDES) 0.25 ± 0.05 0.50 BSC 0.00 – 0.05 600012fa 17 LT6000/LT6001/LT6002 PACKAGE DESCRIPTIO U GN Package 16-Lead Narrow Plastic SSOP (Reference LTC DWG # 05-08-1641) .045 ± .005 .189 – .196* (4.801 – 4.978) 16 15 14 13 12 11 10 9 .009 (0.229) REF .150 – .165 .229 – .244 (5.817 – 6.198) .0165 ± .0015 .150 – .157** (3.810 – 3.988) .0250 BSC 1 23 4 56 7 8 .004 – .0098 (0.102 – 0.249) .254 MIN RECOMMENDED SOLDER PAD LAYOUT .015 ± .004 × 45° (0.38 ± 0.10) .007 – .0098 (0.178 – 0.249) .016 – .050 (0.406 – 1.270) 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 0° – 8° TYP .0532 – .0688 (1.35 – 1.75) .008 – .012 (0.203 – 0.305) TYP .0250 (0.635) BSC GN16 (SSOP) 0204 600012fa 18 LT6000/LT6001/LT6002 PACKAGE DESCRIPTIO U DHC Package 16-Lead (5mm × 5mm) Plastic DFN (Reference LTC DWG # 05-08-1706) 0.65 ± 0.05 3.50 ± 0.05 PACKAGE OUTLINE 0.25 ± 0.05 0.50 BSC 4.40 ± 0.05 (2 SIDES) RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS 5.00 ± 0.10 (2 SIDES) R = 0.20 TYP 3.00 ± 0.10 (2 SIDES) 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 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 1 0.25 ± 0.05 0.50 BSC 1.65 ± 0.10 (2 SIDES) PIN 1 NOTCH (DHC16) DFN 1103 1.65 ± 0.05 2.20 ± 0.05 (2 SIDES) R = 0.115 TYP 9 16 0.40 ± 0.10 0.00 – 0.05 600012fa 19 LT6000/LT6001/LT6002 TYPICAL APPLICATIO 2M VIN FREQUENCY OUT ≈ 7.5Hz/mV • VIN LINEARITY ≈ 5%, VIN 20mV TO 800mV ISUPPLY ≈ 60µA TO 100µA MUX Amplifier 1.8V VIN1 + – LT6000 SHDN VOUT 1.8V VIN2 + – LT6000 SHDN 60012 TA04a INPUT SELECT SN74LVC2604 RELATED PARTS PART NUMBER LT2178/LT2179 LT1490A/LT1491A LT1494/LT1495/LT1496 LT1672/LT1673/LT1674 LT1782 DESCRIPTION 17µA Dual/Quad Single Supply Op Amps 50µA Dual/Quad Over-The-Top Rail-to-Rail Input and Output Op Amps ® 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 Over-The-Top is a registered trademark of Linear Technology Corporation. 600012fa 20 Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 ● FAX: (408) 434-0507 ● – 6 A1 1/2 LT6001 4 + 5 + 1M 3 A2 1/2 LT6001 1 TP0610 1M VREF 8 42.2k VREF 1000pF DIODES: CENTRAL SEMI CMOD3003 ×4 7 0.1µF 2N7002 VS 4.3V TO 20V 0.1µF 42.2k 4 LT1790-4.096 VOUT INPUT SELECT VS = 1.8V 5ms/DIV VIN1 = 250Hz AT 1VP-P VIN2 = 500Hz AT 0.5VP-P INPUT SELECT = 25Hz AT 1.8VP-P www.linear.com – – 1M 2 0.1µF + U Low Power V-to-F Converter VREF VREF 2M 42.2k 1M 3 2M VREF 7 ® LTC 1440 5 2 1 6 8 VOUT 6 1µF 60012 TA03 VREF 1 2 MUX Amplifier Waveforms 60012 TA04b COMMENTS 120µV VOS(MAX), Gain Bandwidth = 60kHz 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 LT 0406 REV A • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 2005