TLE2301INE

TLE2301 EXCALIBUR 3-STATE-OUTPUT WIDE-BANDWIDTH POWER OPERATIONAL AMPLIFIER SLOS131 – DECEMBER 1993 D D D D D D D D NE PACKAGE (TOP VIEW) High Output Drive Capability . . . 1 A Min 3-State Outputs High Gain-Bandwidth Product 8 MHz Typ Low Total Harmonic Distortion < 0.08% Typ High Slew Rate . . . 12 V/µs Typ Class AB Output Stage Thermal Shutdown Mains-Line Driver Circuit Application Included COMP2 VCC + OUT1 VCC – VCC – OUT2 VCC + TRS2 1 16 2 15 3 14 4 13 5 12 6 11 7 10 8 9 COMP1 VCC – 1N + VCC – VCC – IN – VCC – TRS1 Terminals 4, 5, 12 and 13 are connected to the lead frame. description MAXIMUM PEAK-TO-PEAK OUTPUT VOLTAGE vs FREQUENCY VO(PP) – Maximum Peak-to-Peak Output Voltage – V The TLE2301 is a power operational amplifier that can deliver an output current of 1 A at high frequencies with very low total harmonic distortion. The device has an integral 3-state mode to drive the output stage into a high-impedance state and also to reduce the supply current to less than 3.5 mA. The combination of high output current and 3-state outputs makes the TLE2301 ideal for implementing the signalling transformer driver in mains-based telemetering modems. This combination of features also makes the device well suited for other high-current applications (e.g., motor drivers and audio circuits). Using the Texas Instruments established Excalibur process, the TLE2301 is able to achieve slew rates in excess of 12 V/µs and a gainbandwidth product of 8 MHz. The TLE2301 uses a 16-pin NE power package to provide better power handling capabilities than standard dual-inline packages. 8 VCC ± = ± 5 V TA = 25°C 7 6 RL = 4.3 Ω RL = 8.1 Ω RL = 20 Ω 5 4 3 2 1 0 100 1k 10 k 100 k f – Frequency – Hz 1M 10 M Figure 1 The TLE2301 is characterized for operation over the industrial temperature range of – 40°C to 85°C. AVAILABLE OPTION PACKAGE TA VIOmax AT 25°C THERMALLY-ENHANCED PLASTIC DIP (NE) – 40°C to 85°C 10 mV TLE2301INE Copyright  1993, 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 TLE2301 EXCALIBUR 3-STATE-OUTPUT WIDE-BANDWIDTH POWER OPERATIONAL AMPLIFIER SLOS131 – DECEMBER 1993 equivalent schematic (entire device) COMP1 COMP2 VCC + OUT1 + _ TRS1 OUT2 TRS2 VCC – IN + IN – equivalent schematic (TRS1 and TRS2 inputs) VCC + TRS1 TRS2 VCC – 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 TLE2301 EXCALIBUR 3-STATE-OUTPUT WIDE-BANDWIDTH POWER OPERATIONAL AMPLIFIER SLOS131 – DECEMBER 1993 Terminal Functions TERMINAL DESCRIPTION NAME NO. COMP1 COMP2 16 1 COMP1 and COMP2 are compensation network terminals IN + 14 Noninverting input IN – 11 Inverting input OUT1 OUT2 3 6 Two low-distortion class-AB output stages. g Each is capable of sourcing g more than 500 mA. OUT1 and OUT2 should be connected together for all applications. TRS1 TRS2 9 8 TRS1 and TRS2 are 3-state input terminals. TRS2 should be connected to the ground of the circuit generating the 3-state command ((normally µP g ground). yµ ) The TLE2301 is brought g into 3-state mode by y raising g TRS1 2 V above TRS2. Placing g the TLE2301 in a 3-state mode reduces the supply current to below 2.2 mA (typ). Normal operation resumes by bringing TRS1 to within 0.8 V of TRS2. The 3-state function can be disabled by connecting both TRS1 and TRS2 to VCC – . VCC – 10, 15 High-impedance VCC – input terminals. Although these do not carry any of the device’s supply current, they increase the stability of the device and should be connected to the negative supply terminal (VCC –). VCC – 4, 5, 12, 13 Negative supply terminals and substrate. As with all NE packages, the substrate is directly connected to the lead frame. The result is that the junction-to-ambient thermal impedance (ZθJA) is greatly reduced by soldering the negative supply terminals to the copper area of the printed-circuit board (PCB). VCC + 2, 7 Positive supply terminals. Both terminals should be connected to the positive voltage supply. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 3 TLE2301 EXCALIBUR 3-STATE-OUTPUT WIDE-BANDWIDTH POWER OPERATIONAL AMPLIFIER SLOS131 – DECEMBER 1993 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage, VCC + (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 V Supply voltage, VCC – (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 22 V Differential input voltage, VID (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 44 V Duration of short-circuit current at (or below) 25°C (see Note 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . unlimited Continuous total dissipation at (or below) 25°C free-air temperature (see Notes 4 and 5) . . . . . . . 2075 mW Continuous total dissipation at 85°C case temperature (see Note 5) . . . . . . . . . . . . . . . . . . . . . . . . . 4640 mW Operating free-air temperature range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 40°C to 85°C Operating case or virtual junction temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 40°C to 150°C Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°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 outputs when connected together may be shorted to either supply. Temperature and/or supply voltages must be limited to ensure that the maximum dissipation rating is not exceeded. 4. For operation above 25°C free-air temperature, derate linearly at the rate of 16.56 mW/°C. 5. For operation above 25°C case temperature, derate linearly at the rate of 71.4 mW/°C. To avoid exceeding the design maximum virtual junction temperature, these ratings should not be exceeded. Due to variations in individual device electrical characteristics and thermal resistance, the built-in thermal overload protection may be activated at power levels slightly above or below the rated dissipation. FREE-AIR TEMPERATURE DISSIPATION DERATING CURVE CASE TEMPERATURE DISSIPATION DERATING CURVE 10 Derating Factor = 16.56 mW/°C ZθJC = 60.4°C/ W PD – Total Continuous Power Dissipation – W PD – Total Continuous Power Dissipation – W 2.5 2 1.5 1 0.5 0 6 4 2 Derating Factor = 71.4 mW/°C ZθJC = 14°C/ W 0 25 4 8 40 55 70 TA – Free-Air Temperature – °C 85 POST OFFICE BOX 655303 0 • DALLAS, TEXAS 75265 25 50 75 TC – Case Temperature – °C 100 TLE2301 EXCALIBUR 3-STATE-OUTPUT WIDE-BANDWIDTH POWER OPERATIONAL AMPLIFIER SLOS131 – DECEMBER 1993 recommended operating conditions Supply voltage, VCC ± VCC± = ± 5 V VCC± = ± 15 V Common mode input voltage, voltage VIC Common-mode High-level 3-state enable voltage, VIH MIN MAX UNIT ± 4.5 ± 20 V –4 1.6 V –14 11.8 V 2 Low-level 3-state enable voltage, VIL Continuous output current Operating free-air temperature, TA – 40 V 0.8 V 1 A 85 °C electrical characteristics at specified free-air temperature, VCC ± = ±5 V, CC = 15 pF (unless otherwise noted) (see Figure 5) PARAMETER TEST CONDITIONS VIO Input offset voltage VO = 0,, RS = 50 Ω VIC = 0,, IIB Input bias current VO = 0,, RS = 50 Ω VIC = 0,, VICR Common-mode input voltage g range g RS = 50 Ω VOM + Maximum positive peak output voltage swing RL = 20 Ω Ω, See Note 6 VOM – Maximum negative peak output voltage swing RL = 20 Ω Ω, See Note 6 AVD Large signal differential voltage amplification Large-signal VO = ± 2 V,, RL = 20 Ω VIC = 0,, ri Differential input resistance ro Output resistance (see Note 7) CMRR TA† 25°C MIN TYP MAX 0.4 7 Full range 10 25°C 283 Full range 500 Full range g –4 to 1.6 25°C 3.3 Full range 3.2 25°C – 3.2 Full range – 3.1 25°C 65 Full range 60 25°C TRS1 = 0.8 V 450 mV nA V 3.5 V – 3.4 V 87 dB 1 25°C UNIT MΩ 1 Ω 100 kΩ TRS1 = 2 V, 3-state mode Common mode rejection ratio Common-mode VIC = VICRmin,, RS = 50 Ω VO = 0,, 25°C 65 88 dB kSVR Supply voltage rejection ratio (∆VCC ± /∆VIO) Supply-voltage VCC ± = ± 4.5 V to ± 20 V,, VIC = 0, No load 25°C 70 100 dB IIH Enable input current current, high VI = 2 V V, IIL current low Enable input current, 8V VI = 0 0.8 IOS Short-circuit output current (see Note 8) VO = 0, ICC 3 state mode 3-state 25°C 0.01 Full range 0.5 25°C 0.01 Full range tp ≤ 50 µs VO = 0 0, No load VO = 0, 3-state mode No load, Supply current 25°C 25°C 0.5 0.5 1 1.8 µA µA A 10 21 1.73 2.7 Full range 25°C 0.5 25 mA Full range 3.5 † Full range is – 40°C to 85°C. NOTES: 6. OUT1 and OUT2 are connected together for all tests. 7. TRS1 voltage is measured with respect to TRS2 potential. 8. Pulse testing techniques are used to maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into account separately (tp = pulse duration time) . POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 5 TLE2301 EXCALIBUR 3-STATE-OUTPUT WIDE-BANDWIDTH POWER OPERATIONAL AMPLIFIER SLOS131 – DECEMBER 1993 electrical characteristics at specified free-air temperature, VCC ± = ±15 V, CC = 15 pF (unless otherwise noted) (see Figure 5) PARAMETER TEST CONDITIONS VIO Input offset voltage VO = 0,, RS = 50 Ω VIC = 0,, IIB Input bias current VO = 0,, RS = 50 Ω VIC = 0,, VICR Common-mode input voltage g range g RS = 50 Ω VOM + Maximum positive peak output voltage swing RL = 20 Ω Ω, See Note 6 VOM – Maximum negative peak output voltage swing RL = 20 Ω Ω, See Note 6 AVD Large signal differential voltage amplification Large-signal VO = ± 6 V,, RL = 20 Ω VIC = 0,, ri Differential input resistance ro Output resistance (see Note 7) CMRR MIN TYP MAX 0.3 10 Full range 15 25°C 260 Full range Full range g TRS1 = 0.8 V 3-state mode Common-mode rejection ratio VIC = VICRmin, RS = 50 Ω VO = 0, kSVR Supply voltage rejection ratio (∆VCC ± /∆VIO) Supply-voltage VCC ± = ± 4.5 V to ± 20 V,, VIC = 0, No load IIH Enable input current current, high VI = 2 V V, IIL Enable input current, current low VI = 0 0.8 8V IOS Short-circuit output current (see Note 8) VO = 0, tp ≤ 50 µs VO = 0 0, No load VO = 0, 3-state mode No load, 3 state mode 3-state – 14 to 11.8 25°C 13 Full range 13 25°C – 12.6 Full range – 12.5 25°C 70 Full range 65 13.5 mV nA V – 13 V 102 dB 1 25°C UNIT V MΩ 1 Ω 100 kΩ 25°C 70 97 dB 25°C 70 100 dB 25°C 0.01 Full range 25°C 25°C 25°C 0.01 0.5 0.5 1 3 11 Full range 25°C 0.5 0.5 Full range Supply current 450 500 25°C TRS1 = 2 V, ICC TA† 25°C µA A 25 30 2.2 µA 3.5 mA Full range 5 † Full range is – 40°C to 85°C. NOTES: 6. OUT1 and OUT2 are connected together for all tests. 7. TRS1 voltage is measured with respect to TRS2 potential. 8. Pulse testing techniques are used to maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into account separately (tp = pulse duration time) . 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 TLE2301 EXCALIBUR 3-STATE-OUTPUT WIDE-BANDWIDTH POWER OPERATIONAL AMPLIFIER SLOS131 – DECEMBER 1993 operating characteristics at specified free-air temperature, VCC± = ±5 V, CC = 15 pF, TA = 25°C (unless otherwise noted) (see Figure 5) PARAMETER TEST CONDITIONS RL = 20 Ω, MIN TYP MAX 9 12 V/µs UNIT SR Slew rate at unity gain (see Figure 1) VO = ± 1.5 V, CL = 100 pF ts Settling time (see Figure 1) RL = 20 Ω,, CL = 100 pF,, 3-V step to 30 mV (1%) 07 0.7 µs Vn Equivalent input noise voltage (see Figure 2) RS = 50 Ω, f = 1 kHz 44 nV/√Hz THD Total harmonic distortion VO = 1 Vrms, RL = 20 Ω, f = 50 kHz, CL = 100 pF 0.04% B1 φm Unity-gain bandwidth (see Figure 3) RL = 20 Ω, CL = 100 pF 8 Phase margin at unity gain (see Figure 3) RL = 20 Ω, CL = 100 pF 30° MHz operating characteristics at specified free-air temperature, VCC± = ±15 V, CC = 15 pF, TA = 25°C (unless otherwise noted) (see Figure 5) PARAMETER TEST CONDITIONS TYP MAX 9 14 V/µs UNIT SR Slew rate at unity gain (see Figure 1) VO = ± 10 V, CL = 100 pF ts Settling time (see Figure 1) RL = 20 Ω,, CL = 100 pF,, 20-V step to 200 mV (1%) 18 1.8 µs Vn Equivalent input noise voltage (see Figure 2) RS = 50 Ω, f = 1 kHz 44 nV/√Hz THD Total harmonic distortion VO = 2 Vrms, RL = 20 Ω, f = 50 kHz, CL = 100 pF B1 φm Unity-gain bandwidth (see Figure 3) RL = 20 Ω, CL = 100 pF 8 Phase margin at unity gain (see Figure 3) RL = 20 Ω, CL = 100 pF 35° POST OFFICE BOX 655303 RL = 20 Ω, MIN • DALLAS, TEXAS 75265 0.08% MHz 7 TLE2301 EXCALIBUR 3-STATE-OUTPUT WIDE-BANDWIDTH POWER OPERATIONAL AMPLIFIER SLOS131 – DECEMBER 1993 PARAMETER MEASUREMENT INFORMATION 5 kΩ VCC + _ VI VO + VCC – CL (see Note A) VCC + _ VO + RL VCC – 50 Ω 50 Ω NOTE A: CL includes the fixture capacitance. Figure 2. Slew-Rate Test Circuit Figure 3. Noise-Voltage Test Circuit R2 10 kΩ VI VCC + _ + VCC – CL (see Note A) VI – R1 VCC + _ VO VO VI + + R3 RL COMP1 COMP1 Cc 15 pF NOTE A: CL includes the fixture capacitance. Figure 4. Gain-Bandwidth and Phase-Margin Test Circuit VCC – Figure 5. Compensation Configuration typical values Typical values presented in this data sheet represent the median (50% point) of the device parametric performance. 8 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 TLE2301 EXCALIBUR 3-STATE-OUTPUT WIDE-BANDWIDTH POWER OPERATIONAL AMPLIFIER SLOS131 – DECEMBER 1993 TYPICAL CHARACTERISTICS Table of Graphs FIGURE IIB IIO Input bias current vs Free-air temperature 6, 7 Input offset current vs Free-air temperature 6, 7 vs Frequency AVD Differential voltage amplification VO(PP) Maximum peak-to-peak output voltage VOM Maximum peak output voltage ZθJA Transient junction-to-ambient thermal impedance ICC Supply current vs Free-air temperature INPUT BIAS CURRENT AND INPUT OFFSET CURRENT vs FREE-AIR TEMPERATURE 1000 VCC ± = ± 15 V VIC = 0 100 IIB 10 1 – 50 IIO – 25 0 25 50 75 TA – Free-Air Temperature – °C 100 I IO – Input Bias and Input Offset Currents – nA IIIB IB and IIO I IO – Input Bias and Input Offset Currents – nA IIIB IB and IIO Output impedance 9 vs Frequency 10, 11 vs Output current 12, 13 vs Supply voltage 14 vs Time 15 vs Supply voltage 16 vs Free-air temperature Pulse response zo 8 17 Small signal 18, 19 Large signal 20, 21 vs Frequency 22, 23 INPUT BIAS CURRENT AND INPUT OFFSET CURRENT vs FREE-AIR TEMPERATURE 1000 VCC ± = ± 5 V VIC = 0 IIB 100 10 1 0.1 – 50 IIO – 25 0 25 50 75 TA – Free-Air Temperature – °C Figure 6 100 Figure 7 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 9 TLE2301 EXCALIBUR 3-STATE-OUTPUT WIDE-BANDWIDTH POWER OPERATIONAL AMPLIFIER SLOS131 – DECEMBER 1993 TYPICAL CHARACTERISTICS DIFFERENTIAL VOLTAGE AMPLIFICATION vs FREQUENCY ÁÁ ÁÁ 20° VCC ± = ± 15 V RL = 20 Ω CC = 100 pF TA = 25°C 100 110 40° 80 60° 60 80° 40 100° 20 120° 0 140° – 20 10 100 1k 10 k 100 k 1M AVD – Differential Voltage Amplification – dB AVD – Differential Voltage Amplification – dB 120 DIFFERENTIAL VOLTAGE AMPLIFICATION vs FREE-AIR TEMPERATURE ÁÁ ÁÁ 160° 10 M RL = 20 Ω 100 90 VCC± = ± 5 V 80 70 60 – 50 f – Frequency – Hz – 25 0 25 50 75 TA – Free-Air Temperature – °C Figure 8 MAXIMUM PEAK-TO-PEAK OUTPUT VOLTAGE vs FREQUENCY 25 RL = 8.1 Ω 20 15 10 5 0 100 1k 10 k 100 k f – Frequency – Hz 1M 10 M VO(PP) – Maximum Peak-to-Peak Output Voltage – V VO(PP) – Maximum Peak-to-Peak Output Voltage – V VCC ± = ± 15 V TA = 25°C RL = 20 Ω 8 VCC ± = ± 5 V TA = 25°C 7 6 RL = 4.3 Ω RL = 8.1 Ω RL = 20 Ω 5 4 3 2 1 0 100 Figure 10 10 100 Figure 9 MAXIMUM PEAK-TO-PEAK OUTPUT VOLTAGE vs FREQUENCY 30 VCC ± = ± 15 V 1k 10 k 100 k f – Frequency – Hz Figure 11 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1M 10 M TLE2301 EXCALIBUR 3-STATE-OUTPUT WIDE-BANDWIDTH POWER OPERATIONAL AMPLIFIER SLOS131 – DECEMBER 1993 TYPICAL CHARACTERISTICS MAXIMUM NEGATIVE PEAK OUTPUT VOLTAGE vs OUTPUT CURRENT VOM – – Maximum Negative Peak Output Voltage – V VOM + – Maximum Positive Peak Output Voltage – V MAXIMUM POSITIVE PEAK OUTPUT VOLTAGE vs OUTPUT CURRENT 15 TA = 25°C 12.5 VCC ± = ± 15 V 7.5 VCC ± = ± 5 V 2.5 0 0 200 800 400 600 IO – Output Current – mA TA = 25°C – 12.5 10 5 – 15 1000 VCC ± = ± 15 V – 10 – 7.5 –5 ÁÁÁ ÁÁÁ ÁÁÁ VCC ± = ± 5 V – 2.5 0 0 200 TRANSIENT JUNCTION-TO-AMBIENT THERMAL IMPEDANCE† vs ON TIME MAXIMUM PEAK OUTPUT VOLTAGE vs SUPPLY VOLTAGE Z θ JA – Transient Junction-to-Ambient Thermal Impedance – °C/mW VOM – Maximum Peak Output Voltage – V 100 RL = 20 Ω TA = 25°C 15 VOM + 10 5 0 –5 – 10 VOM – – 15 – 20 0 2 4 1000 Figure 13 Figure 12 20 400 600 800 IO – Output Current – mA 6 8 10 12 14 16 VCC ± – Supply Voltage – V 18 20 d = 50% 10 d = 20% d = 10% d = 5% d = 2% 1 Single Pulse 0.1 0.001 0.01 Figure 14 0.1 1 10 t – On Time – s 100 1000 Figure 15 † d = duty cycle POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 11 TLE2301 EXCALIBUR 3-STATE-OUTPUT WIDE-BANDWIDTH POWER OPERATIONAL AMPLIFIER SLOS131 – DECEMBER 1993 TYPICAL CHARACTERISTICS SUPPLY CURRENT vs SUPPLY VOLTAGE SUPPLY CURRENT vs FREE-AIR TEMPERATURE 10.8 10.7 VO = 0 No Load 10.6 10.6 I CC – Supply Current – mA I CC – Supply Current – mA 10.8 VO = 0 No Load TA = 25°C 10.5 10.4 10.3 10.2 10.1 VCC ± = ± 15 V 10.4 10.2 10 VCC ± = ± 5 V 9.8 9.6 10 9.9 0 2 4 6 8 10 12 14 16 18 9.4 – 50 20 – 25 VCC ± – Supply Voltage – V Figure 16 150 10 100 VO – Output Voltage – mV VO – Output Voltage – V VOLTAGE FOLLOWER SMALL-SIGNAL PULSE RESPONSE 15 5 0 –5 VCC ± = ± 15 V RL = 20 Ω CL = 100 pF TA = 25°C 0 2 4 6 8 t – Time – µs 50 0 – 50 VCC ± = ± 5 V RL = 20 Ω CL = 100 pF TA = 25°C – 100 – 15 –2 10 12 14 – 150 – 0.5 0 0.5 1 t – Time – µs Figure 18 12 100 Figure 17 VOLTAGE FOLLOWER SMALL-SIGNAL PULSE RESPONSE – 10 0 25 50 75 TA – Free-Air Temperature – °C Figure 19 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1.5 2 2.5 TLE2301 EXCALIBUR 3-STATE-OUTPUT WIDE-BANDWIDTH POWER OPERATIONAL AMPLIFIER SLOS131 – DECEMBER 1993 TYPICAL CHARACTERISTICS VOLTAGE FOLLOWER LARGE-SIGNAL PULSE RESPONSE VOLTAGE FOLLOWER LARGE-SIGNAL PULSE RESPONSE 3 150 VCC ± = ± 15 V RL = 20 Ω CL = 100 pF TA = 25°C 2 VO – Output Voltage – V VO – Output Voltage – mV 100 50 0 – 50 – 100 1 0 –1 VCC ± = ± 5 V RL = 20 Ω CL = 100 pF TA = 25°C –2 – 150 – 0.5 0 0.5 1 1.5 t – Time – µs 2 –3 –2 2.5 0 2 4 6 8 t – Time – µs Figure 20 4 VCC ± = ± 15 V TA = 25°C 3.5 AVD = 100 3 2.5 2 AVD = 10 1.5 1 VCC ± = ± 5 V TA = 25°C 3 AVD = 100 2.5 2 1.5 AVD = 10 1 AVD = 1 AVD = 1 0.5 0.5 0 1k 14 OUTPUT IMPEDANCE vs FREQUENCY z o – Output Impedance – Ω z o – Output Impedance – Ω 3.5 12 Figure 21 OUTPUT IMPEDANCE vs FREQUENCY 4 10 10 k 0 1k f – Frequency – Hz 100 k 1M f – Frequency – Hz Figure 22 Figure 23 100 k 1M 10 M POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 10 k 10 M 13 TLE2301 EXCALIBUR 3-STATE-OUTPUT WIDE-BANDWIDTH POWER OPERATIONAL AMPLIFIER SLOS131 – DECEMBER 1993 APPLICATION INFORMATION circuit for mains-line driver over 40-kHz-to-90-kHz utility band The following application is a circuit for a mains-line driver over 40-kHz-to-90-kHz utility band and is based around the European standard (EN56065 –1) describing utility and consumer applications. This example shows a possible implementation for differential transmission on the mains line. This applications circuit is designed around the requirements of a domestic electricity meter operating over a utility band of 40 kHz to 90 kHz. A dual-rail power supply of ± 5 V is used for this design example to limit device power dissipation. The same design principles, however, can be applied to other applications. frequency band The frequency band for utility applications extends over an enormous range from 3 kHz to 95 kHz. In order to have a coupling network that is economical and implemented with readily available components, this circuit is designed for a subband from 40 kHz to 90 kHz. This subband is sufficiently wide to support multichannel operation; i.e., 10 channels of 5 kHz width or more if the channel widths are smaller. To avoid transmission spillover into the next band, a guard band of 5 kHz is allowed. The upper frequency of this circuit is set to 90 kHz, and the lower frequency is chosen for an economical coupling network and still has sufficient bandwidth to support multichannel operation. output drive The impedance of the mains network at these signalling frequencies is relatively low (