TL070 JFET-INPUT OPERATIONAL AMPLIFIER SLOS121A – NOVEMBER 1993 – REVISED AUGUST 1994 D D D D D D D D D D D, P, OR PW PACKAGE (TOP VIEW) Low Power Consumption Wide Common-Mode and Differential Voltage Ranges Low Input Bias and Offset Currents Output Short-Circuit Protection Low Total Harmonic Distortion 0.003% Typ Low Noise Vn = 18 nV/√Hz Typ at f = 1 kHz High Input Impedance . . . JFET Input Stage Common-Mode Input Voltage Range Includes VCC+ Latch-Up-Free Operation High Slew Rate . . . 13 V/µs Typ N1/COMP IN – IN + VCC – 1 8 2 7 3 6 4 5 COMP VCC + OUT OFFSET N2 symbol N1/COMP COMP IN + + IN – – OUT description OFFSET N2 The JFET-input TL070 operational amplifier is designed as the lower-noise version of the TL080 amplifier with low input bias and offset currents and fast slew rate. The low harmonic distortion and low noise make the TL070 ideally suited for high-fidelity and audio preamplifier applications. This amplifier features JFET inputs (for high input impedance) coupled with bipolar output stages integrated on a single monolithic chip. The TL070C device is characterized for operation from 0°C to 70°C. The TL070I device is characterized for operation from – 40°C to 85°C. The TL070M device is characterized for operation from – 55°C to 125°C. AVAILABLE OPTIONS TA VIOmax AT 25°C PACKAGE SMALL OUTLINE (D) PLASTIC DIP (P) TSSOP (PW) 0°C to 70°C 10 mV TL070CD TL070CP TL070CPW – 40°C to 85°C 10 mV TL070ID TL070IP — – 55°C to 125°C 10 mV TL070MD TL070MP — Copyright 1994, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1 TL070 JFET-INPUT OPERATIONAL AMPLIFIER SLOS121A – NOVEMBER 1993 – REVISED AUGUST 1994 schematic VCC + IN + 64 Ω IN – 128 Ω OUT 64 Ω N1/COMP OFFSET N2 COMP ÌÌÌ ÌÌÌ 1080 Ω 1080 Ω VCC – All component values shown are nominal. COMPONENT COUNT † Transistors Diodes Resistors epi-FET JFET 13 2 10 1 2 † Includes all bias and trim circuitry 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 TL070 JFET-INPUT OPERATIONAL AMPLIFIER SLOS121A – NOVEMBER 1993 – REVISED AUGUST 1994 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage, VCC + (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 V Supply voltage, VCC – . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –18 V Differential input voltage, VID (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 30 V Input voltage, VI (see Notes 1 and 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 15 V Duration of short-circuit current (see Note 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . unlimited Continuous total dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table Operating free-air temperature range, TA: C suffix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C I suffix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 40°C to 85°C M suffix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 55°C to 125°C Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C † Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTES: 1. All voltage values, except differential voltages, are with respect to the midpoint between VCC + and VCC – . 2. Differential voltages are at IN+ with respect to IN –. 3. The magnitude of the input voltage must never exceed the magnitude of the supply voltage or 15 V, whichever is less. 4. The output may be shorted to ground or to either supply. Temperature and/or supply voltages must be limited to ensure that the dissipation rating is not exceeded. DISSIPATION RATING TABLE PACKAGE TA ≤ 25°C POWER RATING DERATING FACTOR D 680 mW 5.8 mW/°C P 680 mW 8.0 mW/°C PW 525 mW 4.2 mW/°C DERATE ABOVE TA 33°C TA = 70°C POWER RATING TA = 85°C POWER RATING TA = 125°C POWER RATING 464 mW 377 mW 145 mW 65°C 640 mW 520 mW 200 mW 70°C 336 mW N/A N/A POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 3 TL070 JFET-INPUT OPERATIONAL AMPLIFIER SLOS121A – NOVEMBER 1993 – REVISED AUGUST 1994 electrical characteristics, VCC ± = ± 15 V (unless otherwise noted) PARAMETER TEST CONDITIONS VIO Input offset voltage VO = 0 0, RS = 50 Ω αVIO Temperature coefficient of input offset voltage VO = 0, RS = 50 Ω IIO Input offset current VO = 0 IIB VICR Input bias current‡ RL ≥ 10 kΩ B1 Unity-gain bandwidth ri 3 10 13 Full range 18 25°C 5 65 25°C ±11 –12 to 15 25°C ±12 ±13.5 VO = ±10 V,, RL ≥ 2 kΩ Input resistance mV 100 pA 10 nA 200 pA 7 nA V V ±10 25°C 25 Full range 15 200 V/mV 25°C 3 25°C 1012 Ω CMRR Common-mode rejection ratio VIC = VICRmin, RS = 50 Ω kSVR Supply voltage rejection ratio (∆VCC ± /∆VIO) VCC = ± 9 V to ± 15 V, RS = 50 Ω VO = 0, 25°C Supply current VO = 0, No load 25°C 1.4 Crosstalk attenuation AVD = 100 25°C 120 ICC VO1/ VO2 UNIT µV/°C ±12 Full range RL ≥ 2 kΩ Large-signal g g differential voltage g amplification MAX Full range Common-mode input voltage range AVD 25°C TYP Full range 25°C VO = 0 Maimum peak output voltage swing TL070C MIN Full range RL = 10 kΩ VOM TA† MHz VO = 0, 25°C 70 100 dB 70 100 dB 2.5 mA dB † All characteristics are measured under open-loop conditions with zero common-mode voltage unless otherwise specified. Full range for TA is 0°C to 70°C. ‡ Input bias currents of a FET-input operational amplifier are normal junction reverse currents, which are temperature sensitive as shown in Figure 5. Pulse techniques must be used that will maintain the junction temperature as close to the ambient temperature as possible. 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 TL070 JFET-INPUT OPERATIONAL AMPLIFIER SLOS121A – NOVEMBER 1993 – REVISED AUGUST 1994 electrical characteristics, VCC ± = ± 15 V (unless otherwise noted) PARAMETER TEST CONDITIONS VIO Input offset voltage VO = 0 0, RS = 50 Ω αVIO Temperature coefficient of input offset voltage VO = 0, RS = 50 Ω IIO Input offset current VO = 0 IIB Input bias current‡ Common-mode input voltage range VOM Maximum peak output voltage swing TL070I MIN 25°C TYP MAX 3 10 Full range 13 Full range 18 25°C 5 Full range 25°C VO = 0 VICR TA† 65 Full range RL = 10 kΩ RL ≥ 10 kΩ 25°C ±11 –12 to 15 25°C ±12 ±13.5 Full range RL ≥ 2 kΩ VO = ±10 V,, RL ≥ 2 kΩ UNIT mV µV/°C 100 pA 10 nA 200 pA 20 nA V ±12 V ±10 25°C 25 Full range 15 200 AVD Large-signal g g differential voltage g amplification B1 Unity-gain bandwidth 25°C 3 ri Input resistance 25°C 1012 Ω CMRR Common-mode rejection ratio VIC = VICRmin, RS = 50 Ω VO = 0, 25°C 70 100 dB kSVR Supply voltage rejection ratio (∆VCC ± /∆VIO) VCC = ± 9 V to ± 15 V, RS = 50 Ω VO = 0 25°C 70 100 dB Supply current VO = 0, No load 25°C 1.4 Crosstalk attenuation AVD = 100 25°C 120 ICC VO1/ VO2 V/mV MHz 2.5 mA dB † All characteristics are measured under open-loop conditions with zero common-mode voltage unless otherwise specified. Full range for TA is – 40°C to 85°C. ‡ Input bias currents of a FET-input operational amplifier are normal junction reverse currents, which are temperature sensitive as shown in Figure 5. Pulse techniques must be used that will maintain the junction temperature as close to the ambient temperature as possible. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 5 TL070 JFET-INPUT OPERATIONAL AMPLIFIER SLOS121A – NOVEMBER 1993 – REVISED AUGUST 1994 electrical characteristics, VCC ± = ± 15 V (unless otherwise noted) PARAMETER TA† TEST CONDITIONS VIO Input offset voltage VO = 0 0, RS = 50 Ω αVIO Temperature coefficient of input offset voltage VO = 0, RS = 50 Ω IIO Input offset current VO = 0 Input bias current‡ IIB Common-mode input voltage range VOM Maximum peak output voltage swing 25°C TYP MAX 3 10 Full range 13 Full range 18 25°C 5 Full range 25°C VO = 0 VICR TL070M MIN 65 Full range RL = 10 kΩ RL ≥ 10 kΩ 25°C ±11 –12 to 15 25°C ±12 ±13.5 Full range RL ≥ 2 kΩ UNIT mV µV/°C 100 pA 20 nA 200 pA 50 nA V ±12 V ±10 25°C 25 Full range 15 200 AVD Large-signal g g differential voltage g amplification B1 Unity-gain bandwidth 25°C 3 ri Input resistance 25°C 1012 Ω CMRR Common-mode rejection ratio VIC = VICRmin, RS = 50 Ω VO = 0, 25°C 70 100 dB kSVR Supply voltage rejection ratio (∆VCC ± /∆VIO) VCC = ± 9 V to ± 15 V, RS = 50 Ω VO = 0, 25°C 70 100 dB Supply current VO = 0, No load 25°C 1.4 Crosstalk attenuation AVD = 100 25°C 120 ICC VO1/ VO2 VO = ±10 V V, RL ≥ 2 kΩ V/mV MHz 2.5 mA dB † All characteristics are measured under open-loop conditions with zero common-mode voltage unless otherwise specified. Full range for TA is – 55°C to 125°C. ‡ Input bias currents of a FET-input operational amplifier are normal junction reverse currents, which are temperature sensitive as shown in Figure 5. Pulse techniques must be used that will maintain the junction temperature as close to the ambient temperature as possible. operating characteristics, VCC ± = ± 15 V, TA = 25°C PARAMETER TEST CONDITIONS MIN TYP MAX UNIT 8 13 V/µs µs SR Slew rate at unity gain VI = 10 V, CL = 100 pF, RL = 2 kΩ, See Figure 1 tr Rise time overshoot factor VI = 20 mV,, CL = 100 pF, RL = 2 kΩ,, See Figure 1 0.1 20 % f = 1 kHz 18 nV/√Hz Vn Equivalent input noise voltage RS = 20 Ω In Equivalent input noise current RS = 20 Ω, f = 1 kHz THD Total harmonic distortion VO(rms) = 10 V, RL ≥ 2 kΩ, RS ≤ 1 kΩ, f = 1 kHz 6 POST OFFICE BOX 655303 f = 10 Hz to 10 kHz • DALLAS, TEXAS 75265 4 µV 0.01 pA/√Hz 0.003 % TL070 JFET-INPUT OPERATIONAL AMPLIFIER SLOS121A – NOVEMBER 1993 – REVISED AUGUST 1994 PARAMETER MEASUREMENT INFORMATION 10 kΩ – OUT 1 kΩ – VI OUT + + VI CL = 100 pF RL = 2 kΩ CC = 18 pF Figure 1. Unity-Gain Amplifier CL = 100 pF RL Figure 2. Gain-of-10 Inverting Amplifier 100 kΩ VCC + C2 C1 500 pF – N1 1 MΩ 2 MΩ N2 OUT + IN – – IN – N1 COMP OUT Figure 3. Feed-Forward Compensation POST OFFICE BOX 655303 + IN + Figure 4. Input Offset Voltage Null Circuit • DALLAS, TEXAS 75265 7 TL070 JFET-INPUT OPERATIONAL AMPLIFIER SLOS121A – NOVEMBER 1993 – REVISED AUGUST 1994 TYPICAL CHARACTERISTICS Table of Graphs FIGURE IIB Input bias current vs Free-air temperature 5 VOM Maximum output voltage vs Frequency vs Free-air temperature vs Load resistance vs Supply voltage 6, 7, 8 9 10 11 AVD Large signal differential voltage amplification Large-signal vs Free-air temperature vs Frequency 12 14 AVD Differential voltage amplification vs Frequency 13 Phase shift vs Frequency 14 Normalized unity-gain bandwidth vs Free-air temperature 15 Normalized phase shift vs Free-air temperature 15 Common-mode rejection ratio vs Free-air temperature 16 ICC Supply Su ly current vs Su Supply ly voltage Free-air vs Free air temperature 17 18 PD Total power dissipation vs Free-air temperature 19 Normalized slew rate vs Free-air temperature 20 Vn Equivalent input noise voltage vs Frequency 21 THD Total harmonic distortion vs Frequency 22 Large-signal pulse response vs Time 23 Output voltage vs Elapsed time 24 CMRR VO 8 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 TL070 JFET-INPUT OPERATIONAL AMPLIFIER SLOS121A – NOVEMBER 1993 – REVISED AUGUST 1994 TYPICAL CHARACTERISTICS† INPUT BIAS CURRENT vs FREE-AIR TEMPERATURE 10 1 0.1 0.01 – 75 – 25 0 25 50 75 100 VCC ± = ± 10 V ± 10 ± 7.5 VCC ± = ± 5 V ±5 125 ± 2.5 0 100 1k TA – Free-Air Temperature – °C Figure 5 ± 12.5 ± 10 ± 15 RL = 2 kΩ TA = 25°C See Figure 2 VCC ± = ± 10 V ± 7.5 ÁÁ ÁÁ ÁÁ ±5 VCC ± = ± 5 V ± 2.5 0 100 1k 10 k 100 k f – Frequency – Hz 1M 10 M MAXIMUM PEAK OUTPUT VOLTAGE vs FREQUENCY 1M 10 M VOM VOM – Maximum Peak Output Voltage – V VOM VOM – Maximum Peak Output Voltage – V ÌÌÌÌÌ ÌÌÌÌÌ VCC ± = ± 15 V 10 k 100 k f – Frequency – Hz Figure 6 MAXIMUM PEAK OUTPUT VOLTAGE vs FREQUENCY ± 15 RL = 2 kΩ TA = 25°C See Figure 2 VCC ± = ± 15 V ± 12.5 ÁÁ ÁÁ – 50 ÌÌÌÌÌ ÌÌÌÌ ÌÌÌÌÌ ÌÌÌÌ ÌÌÌÌÌ ÌÌÌÌ ÌÌÌÌÌ ÌÌÌÌÌ ÌÌÌÌÌ ± 15 VCC± = ± 15 V VOM VOM – Maximum Peak Output Voltage – V IIIB– IB Input Bias Current – nA 100 MAXIMUM PEAK OUTPUT VOLTAGE vs FREQUENCY ± 12.5 ÁÁ ÁÁ ÁÁ ± 10 ÌÌÌÌÌ ÌÌÌÌÌ ÌÌÌÌ ÌÌÌÌ VCC ± = ± 15 V RL = 2 kΩ See Figure 2 TA = 25°C TA = – 55°C ± 7.5 ±5 TA = 125°C ± 2.5 0 10 k Figure 7 40 k 100 k 400 k 1 M f – Frequency – Hz 4M 10 M Figure 8 † Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices. An 18-pF compensation capacitor is used. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 9 TL070 JFET-INPUT OPERATIONAL AMPLIFIER SLOS121A – NOVEMBER 1993 – REVISED AUGUST 1994 TYPICAL CHARACTERISTICS† MAXIMUM PEAK OUTPUT VOLTAGE vs LOAD RESISTANCE MAXIMUM PEAK OUTPUT VOLTAGE vs FREE-AIR TEMPERATURE ± 15 RL = 10 kΩ ÌÌÌÌÌ ÌÌÌÌÌ ± 12.5 VOM VOM – Maximum Peak Output Voltage – V VOM – Maximum Peak Output Voltage – V VOM ± 15 RL = 2 kΩ ± 10 ± 7.5 ±5 ÁÁ ÁÁ ± 2.5 VCC ± = ± 15 V See Figure 2 0 – 75 – 50 – 25 0 25 50 75 100 125 ± 12.5 VCC ± = ± 15 V TA = 25°C See Figure 2 ± 10 ± 7.5 ±5 ÁÁ ÁÁ ± 2.5 0 0.1 0.2 TA – Free-Air Temperature – °C 0.4 7 10 4 ± 15 AVD – Large-Signal Differential Voltage Amplification – V/mV Figure 10 MAXIMUM PEAK OUTPUT VOLTAGE vs SUPPLY VOLTAGE VOM VOM – Maximum Peak Output Voltage – V 2 RL – Load Resistance – kΩ Figure 9 LARGE-SIGNAL DIFFERENTIAL VOLTAGE AMPLIFICATION VS FREE-AIR TEMPERATURE 1000 RL = 10 kΩ TA = 25°C ± 12.5 ± 10 ± 7.5 ÁÁ ÁÁ ÁÁ 0.7 1 ±5 ± 2.5 0 0 2 4 6 8 10 12 14 16 |VCC ±| – Supply Voltage – V 400 200 100 40 20 10 4 2 1 – 75 VCC ± = ± 15 V VO = ± 10 V RL = 2 kΩ – 50 Figure 11 – 25 0 25 50 75 100 125 TA – Free-Air Temperature – °C Figure 12 † Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices. An 18-pF compensation capacitor is used. 10 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 TL070 JFET-INPUT OPERATIONAL AMPLIFIER SLOS121A – NOVEMBER 1993 – REVISED AUGUST 1994 TYPICAL CHARACTERISTICS† AVD – Large-Signal Differential Voltage Amplification – dB DIFFERENTIAL VOLTAGE AMPLIFICATION vs FREQUENCY WITH FEED-FORWARD COMPENSATION AAVD VD – Differential Voltage Amplification – dB 10 6 VCC ± = ± 15 V C2 = 3 pF TA = 25°C See Figure 3 10 5 10 4 10 3 10 2 ÁÁ ÁÁ ÁÁ 10 1 1 100 1k 10 k 100 k f – Frequency – Hz 1M 10 M LARGE-SIGNAL DIFFERENTIAL VOLTAGE AMPLIFICATION AND PHASE SHIFT vs FREQUENCY 10 6 VCC± = ± 5 V to ± 15 V RL = 2 kΩ TA = 25°C 10 5 10 4 10 3 90° Phase Shift (right scale) 10 1 1 1 10 1.01 Phase Shift (right scale) 1 0.99 0.9 – 50 – 25 0 25 0.98 50 75 100 0.97 125 CMRR – Common-Mode Rejection Ratio – dB 1.02 1.1 0.7 – 75 89 Normalized Phase Shift Normalized Unity-Gain Bandwidth Unity-Gain Bandwidth (left scale) VCC ± = ± 15 V RL = 2 kΩ f = B1 for Phase Shift 100 1k 10 k 100 k f – Frequency – Hz 1M 180° 10 M COMMON-MODE REJECTION RATIO vs FREE-AIR TEMPERATURE 1.03 1.3 0.8 135° Figure 14 NORMALIZED UNITY-GAIN BANDWIDTH AND PHASE SHIFT vs FREE-AIR TEMPERATURE 1 45° 10 2 Figure 13 1.2 0° Differential Voltage Amplification (left scale) VCC ± = ± 15 V RL = 10 kΩ 88 87 86 85 84 83 – 75 – 50 – 25 0 25 50 75 100 125 TA – Free-Air Temperature – °C TA – Free-Air Temperature – °C Figure 16 Figure 15 † Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices. An 18-pF compensation capacitor is used. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 11 TL070 JFET-INPUT OPERATIONAL AMPLIFIER SLOS121A – NOVEMBER 1993 – REVISED AUGUST 1994 TYPICAL CHARACTERISTICS† SUPPLY CURRENT vs SUPPLY VOLTAGE SUPPLY CURRENT vs FREE-AIR TEMPERATURE 2 1.8 1.6 1.4 1.2 1 ÁÁÁ ÁÁÁ ÁÁÁ 1.6 1.4 1.2 1 ÁÁ ÁÁ ÁÁ 0.8 0.6 0.4 0.2 0 0 2 4 VCC ± = ± 15 V No Signal No Load 1.8 ICC± – Supply Current – mA I CC ICC± – Supply Current – mA I CC ÌÌÌÌ ÌÌÌÌ ÌÌÌÌ 2 TA = 25°C No Signal No Load 6 8 10 12 14 0.8 0.6 0.4 0.2 0 – 75 16 – 50 – 25 TOTAL POWER DISSIPATED vs FREE-AIR TEMPERATURE 75 100 125 100 125 NORMALIZED SLEW RATE vs FREE-AIR TEMPERATURE ÌÌÌÌÌ ÌÌÌÌÌ ÌÌÌÌÌ 1.15 VCC ± = ± 15 V No Signal No Load 1.10 75 Normalized Slew Rate PD PD – Total Power Dissipated – mW 50 Figure 18 Figure 17 50 ÌÌÌÌÌ ÌÌÌÌÌ ÌÌÌÌÌ VCC ± = ± 15 V RL = 2 kΩ CL = 100 pF 1.05 1 0.95 0.90 25 0 – 75 25 TA – Free-Air Temperature – °C |VCC ±| – Supply Voltage – V 100 0 – 50 – 25 0 25 50 75 100 125 0.85 – 75 – 50 TA – Free-Air Temperature – °C – 25 0 25 50 75 TA – Free-Air Temperature – °C Figure 19 Figure 20 † Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices. An 18-pF compensation capacitor is used. 12 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 TL070 JFET-INPUT OPERATIONAL AMPLIFIER SLOS121A – NOVEMBER 1993 – REVISED AUGUST 1994 TYPICAL CHARACTERISTICS 50 1 VCC ± = ± 15 V AVD = 10 RS = 20 Ω TA = 25°C 40 T THD HD – Total Harmonic Distortion – % Vn V nV/ Hz n – Equivalent Input Noise Voltage – nV/Hz ÁÁ ÁÁ ÁÁ ÁÁ TOTAL HARMONIC DISTORTION vs FREQUENCY EQUIVALENT INPUT NOISE VOLTAGE vs FREQUENCY 30 20 10 0 40 100 10 400 1 k 4 k 10 k f – Frequency – Hz 40 k 100 k VCC ± = ± 15 V AVD = 1 VI (RMS) = 6 V TA = 25°C 0.4 0.1 0.04 ÁÁÁ ÁÁÁ ÁÁÁ 0.01 0.004 0.001 100 400 1k 4 k 10 k f – Frequency – Hz Figure 21 Figure 22 OUTPUT VOLTAGE vs ELAPSED TIME VOLTAGE-FOLLOWER LARGE-SIGNAL PULSE RESPONSE 28 VCC ± = ± 15 V RL = 2 kΩ CL = 100 pF TA = 25°C 4 24 Overshoot Output 2 0 ÁÁ ÁÁ ÁÁ ÁÁ ÌÌÌ ÌÌÌ ÁÁ ÁÁ Input –4 VO V O – Output Voltage – mV VI and VO – Input and Output Voltage – V 6 –2 40 k 100 k –6 20 90% 16 12 8 4 VCC ± = ± 15 V RL = 2 kΩ TA = 25°C 10% 0 tr –4 0 0.5 1 1.5 t – Time – µs 2 2.5 3 3.5 0 Figure 23 0.1 0.2 0.3 0.4 0.5 t – Elasped Time – µs 0.6 0.7 Figure 24 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 13 TL070 JFET-INPUT OPERATIONAL AMPLIFIER SLOS121A – NOVEMBER 1993 – REVISED AUGUST 1994 APPLICATION INFORMATION 220 kΩ 0.00375 µF 10 kΩ VCC + 100 kΩ Bass MAX – TL070 75 µF 100 Ω TL070 5 kΩ 47 kΩ Gain 10 pF 0.003 µF 10 kΩ VCC – Balance 3.3 kΩ 0.03 µF + Input 10 kΩ 50 pF VCC – + 68 kΩ 47 µF + Figure 25. IC Preamplifier IC PREAMPLIFIER RESPONSE CHARACTERISTICS 25 VCC ± = ± 15 V TA = 25°C See Figure 25 Voltage Amplification – dB 15 ÁÁÁ ÁÁÁ MAX Treble MAX Bass 20 10 5 0 –5 – 10 – 15 ÁÁÁ ÁÁÁ MIN Treble – 20 MIN Bass – 25 20 40 100 200 400 1 k 2 k 4 k 10 k f – Frequency – Hz Figure 26 14 POST OFFICE BOX 655303 VCC + + 1 µF MIN 100 kΩ Treble MAX – MIN 0.01 µF 100 Ω 0.003 µF 0.03 µF 27 kΩ • DALLAS, TEXAS 75265 20 k 10 pF Output IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those pertaining to warranty, patent infringement, and limitation of liability. TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily performed, except those mandated by government requirements. CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL APPLICATIONS”). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER CRITICAL APPLICATIONS. INCLUSION OF TI PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO BE FULLY AT THE CUSTOMER’S RISK. In order to minimize risks associated with the customer’s applications, adequate design and operating safeguards must be provided by the customer to minimize inherent or procedural hazards. TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other intellectual property right of TI covering or relating to any combination, machine, or process in which such semiconductor products or services might be or are used. TI’s publication of information regarding any third party’s products or services does not constitute TI’s approval, warranty or endorsement thereof. Copyright 1998, Texas Instruments Incorporated