LT1006ACJ8

LT1006 Precision, Single Supply Op Amp FEATURES ■ DESCRIPTIO ■ ■ ■ ■ ■ ■ ■ ■ ■ Single Supply Operation Input Voltage Range Extends to Ground Output Swings to Ground while Sinking Current Guaranteed Offset Voltage: 50µV Max Guaranteed Low Drift: 1.3µV/°C Max Guaranteed Offset Current: 0.5nA Max Guaranteed High Gain 5mA Load Current: 1.5 Million Min 17mA Load Current: 0.8 Million Min Guaranteed Low Supply Current: 520µA Max Supply Current can be Reduced by a Factor of 4 Low Voltage Noise, 0.1Hz to 10Hz: 0.55µVP-P Low Current Noise— Better than OP-07: 0.07pA/√Hz at 10Hz High Input Impedance: 250MΩ Min Minimum Supply Voltage: 2.7V Min The LT ®1006 is the first precision single supply operational amplifier. Its design has been optimized for single supply operation with a full set of specifications at 5V. Specifications at ±15V are also provided. The LT1006 has a low offset voltage of 20µV, drift of 0.2µV/°C, offset current of 120pA, gain of 2.5 million, common mode rejection of 114dB and power supply rejection of 126dB. Although supply current is only 340µA, a novel output stage can source or sink in excess of 20mA while retaining high voltage gain. Common mode input range includes ground to accommodate low ground-referenced inputs from strain gauges or thermocouples, and output can swing to within a few millivolts of ground. If a higher slew rate (in excess of 1V/µs) or micropower operation (supply current down to 90µA) is required, the operating currents can be modified by connecting an external optional resistor to Pin 8. For similar single supply precision dual and quad op amps, please see the LT1013/LT1014 data sheet. For micropower dual and quad op amps, please see the LT1078/LT1079 data sheet. , LTC and LT are registered trademarks of Linear Technology Corporation. APPLICATIO S ■ ■ ■ ■ Low Power Sample-and-Hold Circuits Battery-Powered Precision Instrumentation Strain Gauge Signal Conditioners Thermocouple Amplifiers 4mA to 20mA Current Loop Transmitters Active Filters TYPICAL APPLICATIO 9V LT1006 Single Supply, Micropower Sample and Hold Distribution of Input Offset Voltage 20 18 VS = 5V, 0V TA = 25°C 350 LT1006s TESTED FROM TWO RUNS J AND N PACKAGES 360k 1/4 CD4066 390Ω S3 S4 1/4 CD4066 390Ω 360k UNITS (%) 7 6 OUTPUT 4 20µs 10µs 1mV 250µA 5.0mA 800µA 8 7 2 1/2 CD4066 8 A1 LT1006 6 S1 S2 4 1/2 CD4066 SAMPLE-HOLD COMMAND HIGH = SAMPLE LOW = HOLD LT1006 • TA01 2 – A2 LT1006 – + 3 0.01µF INPUT 0V TO 5V 3 + ACQUISITION TIME HOLD SETTLING TIME S-H OFFSET HOLD SUPPLY CURRENT SAMPLE SUPPLY CURRENT 1kHz SAMPLE RATE CURRENT U 16 14 12 10 8 6 4 2 0 –80 40 80 –40 0 INPUT OFFSET VOLTAGE (µV) LT1006 • G01 U U 1006fa 1 LT1006 ABSOLUTE AXI U RATI GS Supply Voltage ...................................................... ±22V Input Voltage ............... Equal to Positive Supply Voltage Input Voltage ............ 5V Below Negative Supply Voltage Differential Input Voltage ......................................... 30V Output Short-Circuit Duration .......................... Indefinite PACKAGE/ORDER I FOR ATIO TOP VIEW ISY SET (NOTE 3) VOS 1 TRIM –IN 2 +IN 3 4 V– (CASE) 8 – + 7 V+ 6 OUT 5 VOS TRIM (NOTE 4) ORDER PART NUMBER LT1006AMH LT1006MH LT1006ACH LT1006CH +IN 3 V– 4 N8 PACKAGE 8-LEAD PDIP TJMAX = 100°C, θJA = 130°C/W (N8) TJMAX = 150°C, θJA = 200°C/W (S8) J8 PACKAGE 8-LEAD CERDIP TJMAX = 100°C, θJA = 130°C/W H PACKAGE 8-LEAD TO-5 METAL CAN TJMAX = 150°C, θJA = 150°C, θJC = 45°C OBSOLETE PACKAGES Consider the N8 or S8 Package for Alternate Source Consult LTC Marketing for parts specified with wider operating temperature ranges. ELECTRICAL CHARACTERISTICS SYMBOL VOS ∆VOS ∆Time IOS IB en PARAMETER Input Offset Voltage LT1006S8 Long-Term Input Offset Voltage Stability Input Offset Current Input Bias Current Input Noise Voltage Input Noise Voltage Density in Input Noise Current Density Input Resistance Differential Mode Common Mode 0.1Hz to 10Hz fO = 10Hz fO = 1000Hz fO = 10Hz (Note 2) CONDITIONS VS = 5V, VCM = 0V, VOUT = 1.4V, TA = 25°C, unless otherwise noted. MIN LT1006AM/AC TYP MAX 20 0.4 50 MIN LT1006M/C TYP MAX 30 80 0.5 0.7 0.5 15 0.15 10 0.55 32 25 23 22 0.08 100 300 4 32 25 0.9 25 80 400 UNITS µV µV µV/Mo µV/Mo nA nA µVP-P nV/√Hz nV/√Hz pA/√Hz MΩ GΩ LT1006S8 0.12 9 0.55 23 22 0.07 180 400 5 2 + – U U W WW U W (Note 1) Operating Temperature Range LT1006AM/LT1006M (OBSOLETE)....– 55°C to 125°C LT1006AC/LT1006C/LT1006S8 ............... 0°C to 70°C Storage Temperature Range ................. – 65°C to 150°C Lead Temperature (Soldering, 10 sec).................. 300°C TOP VIEW VOS 1 TRIM –IN 2 8 7 6 5 ISY SET (NOTE 3) V+ OUT VOS TRIM (NOTE 4) ORDER PART NUMBER LT1006CN8 LT1006S8 S8 PART MARKING 1006 LT1006AMJ8 LT1006MJ8 LT1006ACJ8 LT1006CJ8 S8 PACKAGE 8-LEAD PLASTIC SO 1006fa LT1006 ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER Input Voltage Range CMRR PSRR AVOL Common Mode Rejection Ratio Power Supply Rejection Ratio Large-Signal Voltage Gain Maximum Output Voltage Swing VCM = 0V to 3.5V CONDITIONS VS = 5V, VCM = 0V, VOUT = 1.4V, TA = 25°C, unless otherwise noted. MIN 3.5 0 100 106 1.0 0.5 LT1006AM/AC TYP MAX 3.8 – 0.3 114 126 2.5 2.0 15 5 220 4.4 4.0 0.4 340 90 2.7 520 2.7 25 10 350 4.0 3.4 0.25 MIN 3.5 0 97 103 0.7 0.3 LT1006M/C TYP MAX 3.8 – 0.3 112 124 2.0 1.8 15 5 220 4.4 4.0 0.4 350 90 570 25 10 350 UNITS V V dB dB V/µV V/µV mV mV mV V V V/µs µA µA V VS = ±2V to ±18V, VO = 0V VO = 0.03V to 4V, RL = 10k VO = 0.03V to 3.5V, RL = 2k Output Low, No Load Output Low, 600Ω to GND Output Low, ISINK = 1mA Output High, No Load Output High, 600Ω to GND 4.0 3.4 0.25 SR IS Slew Rate Supply Current Minimum Supply Voltage RSET = ∞ RSET = 180k Pin 8 to Pin 7 (Note 3) The ● denotes the specifications which apply over the full operating temperature range. VS = 5V, 0V; VCM = 0.1V; VO = 1.4V; –55°C ≤ TA ≤ 125°C, unless otherwise noted. SYMBOL VOS ∆VOS ∆Temp IOS IB AVOL CMRR PSRR PARAMETER Input Offset Voltage Input Offset Voltage Drift Input Offset Current Input Bias Current Large-Signal Voltage Gain Common Mode Rejection Ratio Power Supply Rejection Ratio Maximum Output Voltage Swing IS Supply Current VO = 0.05V to 3.5V, RL = 2k VCM = 0.1V to 3.2V VS = ±2V to ±18V, VO = 0V Output Low, 600Ω to GND Output High, 600Ω to GND CONDITIONS ● ● MIN LT1006AM TYP 40 0.2 0.4 13 MAX 180 1.3 2.0 25 MIN LT1006M TYP 60 0.3 0.5 16 MAX 250 1.8 4.0 40 UNITS µV µV/°C nA nA V/µV dB dB ● ● ● ● ● ● ● ● 0.25 90 100 3.2 0.8 103 117 6 3.8 380 15 0.15 87 97 3.1 630 0.7 102 116 6 3.8 400 18 680 mV V µA 1006fa 3 LT1006 ELECTRICAL CHARACTERISTICS SYMBOL VOS PARAMETER Input Offset Voltage CONDITIONS J8/H Package N8 Package S8 Package J8/H Package N8 Package S8 Package The ● denotes the specifications which apply over the full operating temperature range. VS = 5V, 0V; VCM = 0V; VO = 1.4V; 0°C ≤ TA ≤ 70°C, unless otherwise noted. MIN ● ● ● ● ● ● ● ● LT1006AC TYP 30 MAX 110 MIN LT1006C TYP 45 50 110 0.3 0.5 0.7 0.3 12 MAX 160 190 560 1.8 2.5 3.5 2.5 30 UNITS µV µV µV µV/°C µV/°C µV/°C nA nA V/µV dB dB ∆VOS ∆Temp IOS IB AVOL CMRR PSRR Input Offset Voltage Drift 0.2 1.3 Input Offset Current Input Bias Current Large-Signal Voltage Gain Common Mode Rejection Ratio Power Supply Rejection Ratio Maximum Output Voltage Swing VO = 0.04V to 3.5V, RL = 2k VCM = 0V to 3.4V VS = ± 2V to ±18V, VO = 0V Output Low, 600Ω to GND Output High, 600Ω to GND 0.25 11 0.35 96 101 3.3 1.3 109 120 6 3.9 350 1.2 20 0.25 92 97 13 3.2 570 ● ● ● ● ● ● 1.2 108 118 6 3.9 360 13 620 mV V µA IS Supply Current VS = ±15V, TA = 25°C, unless otherwise noted. SYMBOL VOS IOS IB PARAMETER Input Offset Voltage LT1006S8 Input Offset Current Input Bias Current Input Voltage Range CMRR PSRR AVOL VOUT SR IS Common Mode Rejection Ratio Power Supply Rejection Ratio Large Signal Voltage Gain Maximum Output Voltage Swing Slew Rate Supply Current VCM = +13.5V, –15V VS = ±2V to ±18V, VO = 0V VO = ±10V, RL = 2k VO = ±10V, RL = 600Ω RL = 2k RSET = ∞ RSET = 390Ω Pin 8 to Pin 4 13.5 –15.0 100 106 1.5 0.8 ±13 0.25 1.0 0.1 7.5 13.8 –15.3 117 126 5.0 1.5 ±14 0.4 1.2 360 540 0.5 12.0 13.5 –15.0 97 103 1.2 0.5 ±12.5 0.25 1.0 CONDITIONS MIN LT1006AM/AC TYP MAX 30 100 MIN LT1006M/C TYP MAX 50 100 0.15 8 13.8 –15.3 116 124 4.0 1.0 ±14 0.4 1.2 360 600 180 525 0.9 20 UNITS µV µV nA nA V V dB dB V/µV V/µV V V/µs V/µs µA 1006fa 4 LT1006 ELECTRICAL CHARACTERISTICS SYMBOL VOS ∆VOS ∆Temp IOS IB AVOL CMRR PSRR PARAMETER Input Offset Voltage Input Offset Voltage Drift Input Offset Current Input Bias Current Large-Signal Voltage Gain Common Mode Rejection Ratio Power Supply Rejection Ratio Maximum Output Voltage Swing IS Supply Current CONDITIONS The ● denotes the specifications which apply over the full operating temperature range. VS = ±15V, –55°C ≤ TA ≤ 125°C, unless otherwise noted. MIN ● ● LT1006AM TYP 80 0.5 0.2 9 MAX 320 2.2 2.0 18 MIN LT1006M TYP 110 0.6 0.3 11 MAX 460 2.8 3.0 27 UNITS µV µV/°C nA nA V/µV dB dB V ● ● VO = ±10V, RL = 2k VCM = +13V, –14.9V VS = ± 2V to ±18V, VO = 0V RL = 2k ● ● ● ● ● 0.5 97 100 ±12 1.5 114 117 ±13.8 400 650 0.25 94 97 ±11.5 1.0 113 116 ±13.8 400 750 µA The ● denotes the specifications which apply over the full operating temperature range. VS = ±15V, 0°C ≤ TA ≤ 70°C, unless otherwise noted. SYMBOL VOS PARAMETER Input Offset Voltage CONDITIONS J8/H Package N8 Package S8 Package J8/H Package N8 Package S8 Package ● ● ● ● ● ● ● ● MIN LT1006AC TYP 50 MAX 200 MIN LT1006C TYP 75 80 150 0.6 0.7 1.0 0.25 10 MAX 300 330 730 2.8 3.5 4.5 2 23 UNITS µV µV µV µV/°C µV/°C µV/°C nA nA V/µV dB dB V ∆VOS ∆Temp IOS IB AVOL CMRR PSRR Input Offset Voltage Drift 0.5 2.2 Input Offset Current Input Bias Current Large-Signal Voltage Gain Common Mode Rejection Ratio Power Supply Rejection Ratio Maximum Output Voltage Swing VO = ±10V, RL = 2k VCM = 13V, –15V VS = ± 2V to ±18V, VO = 0V RL = 2k 0.15 8 1 98 101 ±12.5 3 116 120 ±13.9 370 1 15 0.7 94 97 ±11.5 600 ● ● ● ● ● 2.5 114 118 ±13.8 380 660 IS Supply Current µA Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: This parameter is guaranteed by design and is not tested. Note 3: Regular operation does not require an external resistor. In order to program the supply current for low power or high speed operation, connect an external resistor from Pin 8 to Pin 7 or from Pin 8 to Pin 4, respectively. Supply current specifications (for RSET = 180k) do not include current in RSET. Note 4: Optional offset nulling is accomplished with a potentiometer connected between the trim terminals and the wiper to V–. A 10k pot (providing a null range of ±6mV) is recommended for minimum drift of nulled offset voltage with temperature. For increased trim resolution and accuracy, two fixed resistors can be used in conjunction with a smaller potentiometer. For example, two 4.7k resistors tied to Pins 1 and 5, with a 500Ω pot in the middle, will have a null range of ±150µV. 1006fa 5 LT1006 TYPICAL PERFOR A CE CHARACTERISTICS Offset Voltage Drift with Temperature of Representative Units 150 120 90 OFFSET VOLTAGE (µV) VS = 5V, 0V VCM = 0.1V INPUT OFFSET VOLTAGE (µV) RS 1.0 RS 60 30 0 –30 –60 –90 OFFSET VOLTAGE (µV) –120 –150 –50 –25 0.01 50 25 0 75 TEMPERATURE (°C) 100 125 1k Warm-Up Drift 2.0 10M CHANGE IN OFFSET VOLTAGE (µV) VS = 5V, 0V TA = 25°C VOLTAGE GAIN (V/V) VOLTAGE GAIN (V/V) TA = – 55°C TA = 25°C 1M TA = 125°C 1.5 1.0 0.5 LT1006 METAL CAN (H) PACKAGE LT1006 CERDIP (J) PACKAGE 0 0 2 3 1 TIME AFTER POWER ON (MIN) 4 LT1006 • G05 Input Bias Current vs Temperature 18 15 VCM = 0V 0.5 COMMON MODE INPUT VOLTAGE, VS = 5V, 0V (V) 12 VS = 5V, 0V 9 6 3 0 –50 –25 VS = ±15V INPUT OFFSET CURRENT (nA) INPUT BIAS CURRENT (nA) 25 75 0 TEMPERATURE (˚C) 50 6 UW LT1006 • G02 Offset Voltage vs Balanced Source Resistor 10 VS = 5V, 0V, –55°C TO 125°C 500 400 300 200 100 0 VOS vs Common Mode Voltage vs Temperature VS = 5V, 0V – + 1 T = 125°C 1 T = 25°C 2 T = 125°C 1 POSITIVE VOS 2 NEGATIVE VOS 1.0 0 0.4 0.8 COMMON MODE INPUT VOLTAGE (V) 1.4 2 T = 25°C 0.1 VS = ±15V, –55°C TO 125°C –100 –200 –300 –0.4 VS = ±15V, 25°C VS = 5V, 0V, 25°C 3k 10k 30k 100k 300k 1M 3M 10M BALANCED SOURCE RESISTANCE, RS (Ω) LT1006 • G03 LT1006 • G04 Voltage Gain vs Load Resistance, VS = 5V, 0V 10M Voltage Gain vs Load Resistance with VS = ±15V TA = 25°C TA = – 55°C 1M TA = 125°C 100k 100 1k LOAD RESISTANCE TO GROUND (Ω) 10k 100k 100 1k LOAD RESISTANCE TO GROUND (Ω) 10k LT1006 • G06 LT1006 • G07 Input Offset Current vs Temperature 5 4 3 2 1 0 –1 VCM = 0V 0.4 Input Bias Current vs Common Mode Voltage 15 10 5 0 –5 VS = 5V, 0V, T = 125°C VS = ±15V, T = 25°C 0 VS = 5V, 0V, T = 25°C –10 –15 –24 COMMON MODE INPUT VOLTAGE, VS = 15V (V) 0.3 VS = 5V, 0V VS = ±15V 0.2 0.1 100 125 0 –50 –25 50 25 0 75 TEMPERATURE (°C) 100 125 –18 –6 –12 INPUT BIAS CURRENT (nA) LT1006 • G08 LT1006 • G09 LT1006 • G10 1006fa LT1006 TYPICAL PERFOR A CE CHARACTERISTICS 10Hz Voltage Noise Distribution 100 VS = ± 2.5V TA = 25°C 200 UNITS TESTED FROM THREE RUNS 1000 VOLTAGE NOISE DENSITY (nV/√Hz) CURRENT NOISE DENSITY (fA/√Hz) 300 60 100 CURRENT NOISE 40 20 30 VOLTAGE NOISE 1/f CORNER 2Hz 0 16 28 24 20 VOLTAGE NOISE DENSITY (nV/√Hz) 32 10 1 10 100 FREQUENCY (Hz) 1k LT1006 • G12 NOISE VOLTAGE (100nV/DIV) 80 NUMBER OF UNITS Supply Current vs Temperature 500 450 SUPPLY CURRENT (µA) SUPPLY CURRENT (µA) SLEW RATE (V/µs) 400 VS = ±15V 350 VS = 5V, 0V 300 250 –50 –25 50 25 0 75 TEMPERATURE (°C) Output Saturation vs Sink Current vs Temperature 10 V + = 5V TO 30V V – = 0V ISINK = 10mA 1.0 ISINK = 5mA ISINK = 1mA 0.1 ISINK = 100µA ISINK = 10µA ISINK = 0 0.01 –50 –25 0 25 50 75 100 125 5 MAXIMUM OUTPUT VOLTAGE (V) SATURATION VOLTAGE (V) 4 TA = 125°C TA = 25°C COMMON MODE REJECTION RATIO (dB) TEMPERATURE (°C) LT1006 • G17 UW LT1006 • G11 Noise Spectrum TA = 25°C VS = ± 2V TO ±18V 0.1Hz to 10Hz Noise VS = ± 2V TO ±15V TA = 25°C 0 2 4 6 TIME (SEC) 8 10 LT1006 • G13 Reducing Power Dissipation 1000 VS = 5V, 0V SR SLEW RATE (V/µs) Increasing Slew Rate (RSET to V –) 1 10 VS = ±15V OR VS = 5V, 0V 10 SUPPLY CURRENT (mA) ISY* 100 0.1 ISY 1 SR 1 100 125 PIN 8 IS APPROXIMATELY 60mV ABOVE THE NEGATIVE SUPPLY 10 10 5 1 50 CURRENT INJECTED INTO PIN 8 (µA) 0.01 0.5 0.1 100 PIN 8 IS APPROXIMATELY 60mV ABOVE THE NEGATIVE SUPPLY 1k RSET, PIN 8 TO PIN 4 (Ω) 10k LT1006 • G16 0.1 LT1006 • G14 *ISY DOES NOT INCLUDE CURRENT THROUGH RSET LT1006 • G15 Maximum Output Swing vs Load Resistor VS = 5V, 0V Common Mode Rejection Ratio vs Frequency 120 100 80 60 40 20 0 10 100 1k 10k FREQUENCY (Hz) 100k 1M VS = 5V, 0V VS = ±15V TA = 25°C 3 TA = – 55°C 2 1 0 0.01 0.1 1 LOAD RESISTOR (kΩ) 10 LT1006 • G18 LT1006 • G19 1006fa 7 LT1006 TYPICAL PERFOR A CE CHARACTERISTICS Voltage Gain vs Frequency 140 120 VOLTAGE GAIN (dB) 20 PHASE VOLTAGE GAIN (dB) 100 120 PHASE SHIFT (DEGREES) POWER SUPPLY REJECTION RATIO (dB) 100 80 60 40 20 0 –20 0.01 0.1 1 10 100 1k 10k 100k 1M 10M FREQUENCY (Hz) LT1006 • G20 VS = 5V, 0V VS = ±15V Large Transient Response, VS = 5V, 0V 4V 2V 0V 10µs/DIV AV = 1 RL = 4.7k TO 5V INPUT = 0V TO 3.8V Small-Signal Transient Response, VS = 5V, 0V 100mV 0V 20µs/DIV AV = 1 CL = 10pF RL = 600Ω TO GND INPUT = 0V TO 100mV PULSE 8 UW TA = 25°C CL = 10pF 1006 G23 Gain, Phase vs Frequency 80 TA = 25°C VCM = 0V CL = 10pF ±15V GAIN ±15V 120 100 80 60 40 20 Power Supply Rejection Ratio vs Frequency 10 140 160 NEGATIVE SUPPLY POSITIVE SUPPLY 0 5V, 0V 5V, 0V 180 200 –10 0.1 0.3 3 1 FREQUENCY (MHz) 10 LT1006 • G21 0 0.1 VS = ±15V + 1Vp-p SINE WAVE TA = 25°C 1 10 100 1k 10k FREQUENCY (Hz) 100k 1M LT1006 • G22 Large-Signal Transient Response, VS = 5V, 0V Large-Signal Transient Response, VS = ±15V 4V 2V 5V/DIV 0V 10µs/DIV AV = 1 RL = 4.7k TO GROUND INPUT = 0V TO 3.8V 1006 G24 50µs/DIV AV = 1 1006 G25 Small-Signal Transient Response, VCC = ± 2.5V to ±15V 20mV/DIV 1006 G26 2µs/DIV AV = 1 CL = 10pF 1006 G27 1006fa LT1006 APPLICATIO S I FOR ATIO The LT1006 is fully specified for single supply operation, (i.e., when the negative supply is 0V). Input common mode range includes ground; the output swings within a few millivolts of ground. Single supply operation, however, can create special difficulties, both at the input and at the output. The LT1006 has specific circuitry which addresses these problems. At the input, the driving signal can fall below 0V— inadvertently or on a transient basis. If the input is more than a few hundred millivolts below ground, two distinct problems can occur on previous single supply designs, such as the LM124, LM158, OP-20, OP-21, OP-220, OP-221, OP-420: a) When the input is more than a diode drop below ground, unlimited current will flow from the substrate (V– terminal) to the input. This can destroy the unit. On the LT1006, the 400Ω resistors, in series with the input (see Schematic Diagram), protect the devices even when the input is 5V below ground. b) When the input is more than 400mV below ground (at 25°C), the input stage saturates (transistors Q3 and Voltage Follower with Input Exceeding the Negative Common Mode Range (VS = 5V, 0V) 4V 4V 2V 2V 0V 0V 6VP-P INPUT, –1.5V TO 4.5V 1006 TA11a Gain 100 Amplifier 5V R – LT1006 1mV 99R 100mV 600Ω LT1006 • TA02 + U Q4) and phase reversal occurs at the output. This can cause lock-up in servo systems. Due to a unique phase reversal protection circuitry (Q21, Q22, Q27, Q28), the LT1006’s output does not reverse, as illustrated below, even when the inputs are at –1.5V. At the output, the aforementioned single supply designs either cannot swing to within 600mV of ground (OP-20) or cannot sink more than a few microamperes while swinging to ground (LM124, LM158). The LT1006’s all-NPN output stage maintains its low output resistance and high gain characteristics until the output is saturated. In dual supply operations, the output stage is crossover distortion free. Since the output cannot go exactly to ground, but can only approach ground to within a few millivolts, care should be exercised to ensure that the output is not saturated. For example, a 1mV input signal will cause the amplifier to set up in its linear region in the gain 100 configuration shown below, but is not enough to make the amplifier function properly in the voltage follower mode. 4V 2V 0V LM324, LM358, OP-20, OP-21 EXHIBIT OUTPUT PHASE REVERSAL 1006 TA11b W UU LT1006 NO PHASE REVERSAL 1006 TA11c Voltage Follower 5V – LT1006 1mV + OUTPUT SATURATED ≈ 5mV 600Ω LT1006 • TA03 1006fa 9 LT1006 APPLICATIO S I FOR ATIO In automated production testing the output is forced to 1.4V by the test loop; offset voltage is measured with a common mode voltage of zero and the negative supply at zero (Pin 4). Without the test loop, these exact conditions cannot be achieved. The test circuit shown ensures that the output will never saturate even with worst-case offset voltages (– 250µV over the – 55°C to 125°C range). The effective common mode input is 0.3V with respect to the negative supply. As indicated by the common mode rejection specifications the difference is only a few microvolts between the two methods of offset voltage measurement. Test Circuit for Offset Voltage and Offset Drift with Temperature 50k* 4.7V – 100Ω LT1006 V0 + 50k* – 0.3V *RESISTORS MUST HAVE LOW THERMOELECTRIC POTENTIAL. **THIS CIRCUIT IS ALSO USED AS THE BURN-IN CONFIGURATION, WITH SUPPLY VOLTAGES INCREASED TO ± 20V VO = 1000VOS LT1006 • TA04 Comparator Rise Response Time to 10mV, 5mV, 2mV Overdrives 4 4 OUTPUT (V) 2 0 0 INPUT (mV) –100 VS = 5V, 0V 50µs/DIV 1006 TA12a 10 U Low Supply Operation The minimum guaranteed supply voltage for proper operation of the LT1006 is 2.7V. Typical supply current at this voltage is 320µA; therefore, power dissipation is only 860µW. Noise Testing For application information on noise testing and calculations, please see the LT1007 or LT1028 data sheet. Supply Current Programming Connecting an optional external resistor to Pin 8 changes the biasing of the LT1006 in order to increase its speed or to decrease its power consumption. If a higher slew rate is required, connect the external resistor for Pin 8 to Pin 4 [see performance curves for Increasing Slew Rate (RSET to V–)]. For lower power consumption, inject a current into Pin 8 (which is approximately 60mV above V–) as shown on the Reducing Power Dissipation plot. This can be accomplished by connecting RSET to the positive supply, or to save additional power, by obtaining the injected current from a low voltage battery. Comparator Applications The single supply operation of the LT1006 and its ability to swing close to ground while sinking current lends itself to use as a precision comparator with TTL compatible output. Comparator Fall Response Time to 10mV, 5mV, 2mV Overdrives OUTPUT (V) 2 0 0 INPUT (mV) –100 0 VS = 5V, 0V 50µs/DIV 1006 TA12b W UU 1006fa LT1006 TYPICAL APPLICATIO S Platinum RTD Signal Conditioner with Curvature Correction +V V = 5.6V TO 10V 39k 1µ F LM334 1.21k* IK = 100µA 10k* 50k 5°C TRIM 1k** 1k** 1N457 12k* 5k 400°C TRIM 43.2k** +V – + 7 8 0.02V TO 4V OUT = 2°C TO 400°C ±0.25°C LT1006 RP 1k @ 0°C 1µ F 4 1k** 1.21M* RP = ROSEMOUNT 118MF ** = TRW MAR-6 0.1% * = 1% METAL FILM LT1006 • TA05 3.1k* 200k* 100Hz TRIM 220k** TYP 2k + INPUT 0V TO 5V – 120k** 20k TYP 1MHz TRIM 2µF Q5 = 2N3904 * = 1% METAL FILM ** = 1% METAL FILM, SELECTED = 74C14 Q6 CHARGE PUMP U Voltage Controlled Current Source with Ground Referred Input and Output 5V INPUT 3 7 + 0V TO 2V LT1006 2 – 4 6 0.68µF 5V 1k 180k 4 8 7 11 1µ F 12 1µ F 100Ω 14 1/2 LTC1043 17 0.001µF 13 IOUT = 16 VIN 100Ω OPERATES FROM A SINGLE 5V SUPPLY LT1006 • TA06 Micropower 1MHz V/F Converter 9V LM334 2k* VOLTAGE CONTROLLED CURRENT SOURCE 470k 8 47k 12k Q8 2N3906 9V Q1 TRIGGER NC Q7 1 14 12 11 14 ÷100 1 12 11 Q2 + 7 10µF Q3 REFERENCE A1 LT1006 4 74C90 74C90 Q4 LT1004-2.5 LT1004-1.2 OUTPUT 0MHz TO 1MHz 0.33µF 0.01µF 3pF 1N4148 STRAY CAPACITANCE 1000pF (POLYSTYRENE) REFERENCE SWITCH 0.12% LINEARITY 280µA QUIESCENT CURRENT 680µA AT 1MHz LT1006 • TA07 1006fa 11 LT1006 TYPICAL APPLICATIO S Micropower Thermocouple Signal Conditioner with Cold Junction Compensation 4.5V (3AA CELLS) 100k CATALYST RESEARCH CORP MODEL 2736 2.8V TYPE J THERMOCOUPLE 5V 10k 5% 16.2k LT1004 1.235V 4 1/2 LTC1043 7 107k 11 3.2k 12 T1 6250Ω 13 14 17 T1 = YELLOW SPRINGS #44201 ALL RESISTORS = TRW MAR-6 0.1% UNLESS NOTED 100k 1µF 1µF 8 3+ 2 7 6 0V TO 1.000V = 0°C TO 100.0°C ± 0.25°C 51.1k 500Ω 100°C LT1006 1k 0°C 12 U R4 233k* R1 1684* LT1034 1.2V R2 186* 1.8k* R3 RT 56k + – 7 8 0V TO 3V OUT = 0°C TO 60°C ± 0.75°C 5.76M* LT1006 4 5.98k* TOTAL POWER CONSUMPTION ≤ 500µW * = TRW MAR-6 0.1% RT = YELLOW SPRINGS INST. CO MODEL 44007 5k AT 25°C LT1006 • TA08 Linear Thermometer 5V – 4 16 0.001µF LT1006 • TA09 1006fa LT1006 TYPICAL APPLICATIO S ±5V Precision Instrumentation Amplifier 5V 4 DIFFERENTIAL INPUT 12 0.01µF 17 –5V SCHE ATIC DIAGRA V+ 7 9k 9k Q5 1.6k Q13 Q6 Q27 +IN 3 –IN 2 400Ω Q12 400Ω Q22 Q2 Q1 Q21 Q11 2.7k 2.7k Q9 V – 75pF 4 LT1006 • SD01 U + 7 8 5V 3 2 11 C1 1µF (EXTERNAL) C2 1µF + – 8 1 VOUT LT1006 4 –5V 1µF R1 13 14 R2 16 1/2 LTC1043 CMRR > 120dB AT DC CMRR > 120dB AT 60Hz DUAL SUPPLY OR SINGLE 5V GAIN = 1 + R2/R1 VOS ≈ 150µV ∆VOS ≈ 2µV/°C ∆T COMMON MODE INPUT VOLTAGE INCLUDES THE SUPPLIES LT1006 • TA10 W 1.6k Q16 1.6k 100Ω Q14 Q15 Q32 Q3 Q4 J1 Q33 Q37 Q39 28k Q40 V– Q30 Q35 1k Q38 600Ω Q36 Q25 Q28 3.9k 21pF Q26 2.5pF 2.4k 18Ω 6 OUTPUT Q41 Q18 Q29 Q7 Q8 Q10 2k Q19 100pF 15pF Q17 2k 1 TRIM 5 TRIM Q20 1.3k Q23 Q24 2k 30Ω 84k Q44 5.4k 2.5k Q34 8 Q42 4pF Q31 Q43 2k 2k 1006fa W 13 LT1006 PACKAGE DESCRIPTIO U H Package 8-Lead TO-5 Metal Can (.200 Inch PCD) (Reference LTC DWG # 05-08-1320) .335 – .370 (8.509 – 9.398) DIA .305 – .335 (7.747 – 8.509) .040 (1.016) MAX .050 (1.270) MAX GAUGE PLANE .165 – .185 (4.191 – 4.699) REFERENCE PLANE .500 – .750 (12.700 – 19.050) .010 – .045* (0.254 – 1.143) .016 – .021** (0.406 – 0.533) .027 – .045 (0.686 – 1.143) PIN 1 .028 – .034 (0.711 – 0.864) .200 (5.080) TYP .110 – .160 (2.794 – 4.064) INSULATING STANDOFF *LEAD DIAMETER IS UNCONTROLLED BETWEEN THE REFERENCE PLANE AND THE SEATING PLANE .016 – .024 **FOR SOLDER DIP LEAD FINISH, LEAD DIAMETER IS (0.406 – 0.610) H8(TO-5) 0.200 PCD 0801 SEATING PLANE 45°TYP J8 Package 8-Lead CERDIP (Narrow .300 Inch, Hermetic) (Reference LTC DWG # 05-08-1110) CORNER LEADS OPTION (4 PLCS) .405 (10.287) MAX 8 7 6 5 .005 (0.127) MIN .023 – .045 (0.584 – 1.143) HALF LEAD OPTION .045 – .068 (1.143 – 1.650) FULL LEAD OPTION .300 BSC (7.62 BSC) .025 (0.635) RAD TYP 1 2 3 .220 – .310 (5.588 – 7.874) 4 .200 (5.080) MAX .015 – .060 (0.381 – 1.524) .008 – .018 (0.203 – 0.457) 0° – 15° NOTE: LEAD DIMENSIONS APPLY TO SOLDER DIP/PLATE OR TIN PLATE LEADS .045 – .065 (1.143 – 1.651) .014 – .026 (0.360 – 0.660) .100 (2.54) BSC .125 3.175 MIN J8 0801 OBSOLETE PACKAGES 1006fa 14 LT1006 PACKAGE DESCRIPTIO U N8 Package 8-Lead PDIP (Narrow .300 Inch) (Reference LTC DWG # 05-08-1510) .400* (10.160) MAX 8 7 6 5 .255 ± .015* (6.477 ± 0.381) 1 .300 – .325 (7.620 – 8.255) 2 3 4 .130 ± .005 (3.302 ± 0.127) .045 – .065 (1.143 – 1.651) .065 (1.651) TYP .120 (3.048) .020 MIN (0.508) MIN .018 ± .003 (0.457 ± 0.076) N8 1002 .008 – .015 (0.203 – 0.381) +.035 .325 –.015 ( 8.255 +0.889 –0.381 ) .100 (2.54) BSC INCHES MILLIMETERS *THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .010 INCH (0.254mm) NOTE: 1. DIMENSIONS ARE 1006fa 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. 15 LT1006 PACKAGE DESCRIPTIO .050 BSC 8 N N .245 MIN .160 ±.005 .228 – .244 (5.791 – 6.197) 1 2 3 N/2 .030 ±.005 TYP RECOMMENDED SOLDER PAD LAYOUT .010 – .020 × 45° (0.254 – 0.508) .008 – .010 (0.203 – 0.254) 0°– 8° TYP .016 – .050 (0.406 – 1.270) NOTE: 1. DIMENSIONS IN INCHES (MILLIMETERS) 2. DRAWING NOT TO SCALE 3. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm) 16 Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 ● FAX: (408) 434-0507 ● U S8 Package 8-Lead Plastic Small Outline (Narrow .150 Inch) (Reference LTC DWG # 05-08-1610) .189 – .197 (4.801 – 5.004) NOTE 3 7 6 5 .045 ±.005 .150 – .157 (3.810 – 3.988) NOTE 3 N/2 1 2 3 4 .053 – .069 (1.346 – 1.752) .004 – .010 (0.101 – 0.254) .014 – .019 (0.355 – 0.483) TYP .050 (1.270) BSC SO8 0502 1006fa LT/TP 1102 1K REV A • PRINTED IN USA www.linear.com  LINEAR TECHNOLOGY CORPORATION 1988