® INA134 INA2134 INA 134 INA 213 4 INA 134 INA 213 4 AUDIO DIFFERENTIAL LINE RECEIVERS 0dB (G = 1) FEATURES APPLICATIONS ● SINGLE AND DUAL VERSIONS ● AUDIO DIFFERENTIAL LINE RECEIVER ● LOW DISTORTION: 0.0005% at f = 1kHz ● HIGH SLEW RATE: 14V/µs ● SUMMING AMPLIFIER ● UNITY-GAIN INVERTING AMPLIFIER ● FAST SETTLING TIME: 3µs to 0.01% ● WIDE SUPPLY RANGE: ±4V to ±18V ● PSUEDOGROUND GENERATOR ● INSTRUMENTATION BUILDING BLOCK ● LOW QUIESCENT CURRENT: 2.9mA max ● HIGH CMRR: 90dB ● CURRENT SHUNT MONITOR ● VOLTAGE-CONTROLLED CURRENT SOURCE ● FIXED GAIN = 0dB (1V/V) ● PACKAGES—SINGLE: 8-PIN DIP, SO-8 ● GROUND LOOP ELIMINATOR V+ DUAL: 14-PIN DIP, SO-14 7 DESCRIPTION The INA134 and INA2134 are differential line receivers consisting of high performance op amps with onchip precision resistors. They are fully specified for high performance audio applications and have excellent ac specifications, including low distortion (0.0005% at 1kHz) and high slew rate (14V/µs), assuring good dynamic response. In addition, wide output voltage swing and high output drive capability allow use in a wide variety of demanding applications. The dual version features completely independent circuitry for lowest crosstalk and freedom from interaction, even when overdriven or overloaded. –In 2 25kΩ 25kΩ 5 6 +In The INA134 and INA2134 on-chip resistors are laser trimmed for accurate gain and optimum common-mode rejection. Furthermore, excellent TCR tracking of the resistors maintains gain accuracy and common-mode rejection over temperature. Operation is guaranteed from ±4V to ±18V (8V to 36V total supply). 3 25kΩ 25kΩ 1 Sense Output Ref INA134 V+ 4 11 V– –In A 2 25kΩ 25kΩ 13 A +In A –In B 3 6 25kΩ 25kΩ 25kΩ 25kΩ +In B 5 25kΩ 14 10 9 B The INA134 is available in 8-pin DIP and SO-8 surface-mount packages. The INA2134 comes in 14-pin DIP and SO-14 surface-mount packages. Both are specified for operation over the extended industrial temperature range, –40°C to +85°C. 12 25kΩ 8 Sense A Out A Ref A Sense B Out B Ref B INA2134 4 V– International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111 • Twx: 910-952-1111 Internet: http://www.burr-brown.com/ • FAXLine: (800) 548-6133 (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132 ©1997 Burr-Brown Corporation PDS-1390A Printed in U.S.A. July, 1997 SPECIFICATIONS: VS = ±18V At TA = +25°C, VS = ±18V, RL = 2kΩ, and Ref Pin connected to Ground, unless otherwise noted. INA134PA, UA INA2134PA, UA PARAMETER CONDITIONS AUDIO PERFORMANCE Total Harmonic Distortion + Noise, f = 1kHz Noise Floor(1) Headroom(1) VIN = 10Vrms 20kHz BW THD+N < 1% FREQUENCY RESPONSE Small-Signal Bandwidth Slew Rate Settling Time: 0.1% 0.01% Overload Recovery Time Channel Separation (dual), f = 1kHz MIN 10V Step, CL = 100pF 10V Step, CL = 100pF 50% Overdrive OUTPUT NOISE VOLTAGE(2) f = 20Hz to 20kHz f = 1kHz OFFSET VOLTAGE(3) Input Offset Voltage vs Temperature vs Power Supply INPUT Common-Mode Voltage Range: Positive Negative Differential Voltage Range Common-Mode Rejection Impedance(4) Differential Common-Mode GAIN Initial Error vs Temperature Nonlinearity VO = 0V VO = 0V 2(V+)–5 2(V–)+5 VCM = ±31V, RS = 0Ω 74 VO = –16V to 16V (V+)–2 (V–)+2 ±4 IO = 0 TEMPERATURE RANGE Specification Range Operation Range Storage Range Thermal Resistance, θJA 8-Pin DIP SO-8 Surface-Mount 14-Pin DIP SO-14 Surface-Mount UNITS % dBu dBu 3.1 14 2 3 3 117 MHz V/µs µs µs µs dB 7 52 µVrms nV/√HZ ±1000 ±60 µV µV/°C µV/V 2(V+)–4 2(V–)+2 See Typical Curve 90 dB 50 50 kΩ kΩ 1 ±0.02 ±1 0.0001 OUTPUT Voltage Output, Positive Negative Current Limit, Continuous to Common Capacitive Load (Stable Operation) MAX 0.0005 –100 +23 ±100 ±2 ±5 VCM = 0V Specified Temperature Range VS = ±4V to ±18V VO = –16V to 16V POWER SUPPLY Rated Voltage Voltage Range Quiescent Current (per Amplifier) TYP V V ±0.1 ±10 (V+)–1.8 (V–)+1.6 ±60 500 ±18 ±2.4 –40 –55 –55 100 150 80 100 V/V % ppm/°C % V V mA pF ±18 ±2.9 V V mA 85 125 125 °C °C °C °C/W °C/W °C/W °C/W NOTES: (1) dBu = 20log (Vrms /0.7746). (2) Includes effects of amplifier’s input current noise and thermal noise contribution of resistor network. (3) Includes effects of amplifier’s input bias and offset currents. (4) 25kΩ resistors are ratio matched but have ±25% absolute value. The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant any BURR-BROWN product for use in life support devices and/or systems. ® INA134/2134 2 PIN CONFIGURATIONS Top View 8-Pin DIP/SO-8 Top View 14-Pin DIP/SO-14 Ref 1 8 NC NC 1 –In 2 7 V+ –In A 2 14 Ref A 13 Out A A +In 3 6 Output +In A 3 12 Sense A V– 4 5 Sense V– 4 11 V+ +In B 5 10 Sense B B NC = No Connection ABSOLUTE MAXIMUM RATINGS(1) Supply Voltage, V+ to V– .................................................................... 40V Input Voltage Range .......................................................................... ±80V Output Short-Circuit (to ground)(2) ........................................... Continuous Operating Temperature ................................................. –55°C to +125°C Storage Temperature ..................................................... –55°C to +125°C Junction Temperature .................................................................... +150°C Lead Temperature (soldering, 10s) ............................................... +300°C PRODUCT PACKAGE Single INA134PA INA134UA 8-Pin DIP SO-8 Surface-Mount 006 182 –40°C to +85°C –40°C to +85°C Dual INA2134PA INA2134UA 14-Pin DIP SO-14 Surface-Mount 010 235 –40°C to +85°C –40°C to +85°C 9 Out B NC 7 8 Ref B ELECTROSTATIC DISCHARGE SENSITIVITY PACKAGE/ORDERING INFORMATION SPECIFICATION TEMPERATURE RANGE 6 NC = No Connection NOTE: (1) Stresses above these ratings may cause permanent damage. (2) One channel per package. PACKAGE DRAWING NUMBER(1) –In B This integrated circuit can be damaged by ESD. Burr-Brown recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications. NOTE: (1) For detailed drawing and dimension table, please see end of data sheet, or Appendix C of Burr-Brown IC Data Book. ® 3 INA134/2134 TYPICAL PERFORMANCE CURVES At TA = +25°C, VS = ±18V, unless otherwise noted. TOTAL HARMONIC DISTORTION+NOISE vs FREQUENCY DIM INTERMODULATION DISTORTION vs OUTPUT AMPLITUDE 1 5 BW = 100kHz VO = 10Vrms 1 DIM (%) THD+Noise (%) 0.1 0.010 RL = 100kΩ 0.1 RL = 2kΩ, 600Ω RL = 2kΩ 0.001 0.010 RL = 600Ω 0.0001 0.001 20 100 1k 10k 20k –10 –5 0 5 10 15 20 Frequency (Hz) Output Amplitude (dBu) HEADROOM - TOTAL HARMONIC DISTORTION+NOISE vs OUTPUT AMPLITUDE HARMONIC DISTORTION PRODUCTS vs FREQUENCY 1 25 0.01 Amplitude (% of Fundamental) f = 1kHz 0.010 RL = 600Ω 0.001 RL = 2kΩ, 100kΩ RL = 600Ω, 2nd Harmonic 0.001 RL = 600Ω, 3rd Harmonic RL = 2kΩ, 2nd Harmonic 0.0001 ( RL = 2kΩ, 3rd Harmonic 0.00001 noise limited) VO = 1Vrms 0.000001 0.0001 0 5 10 15 20 25 30 20 100 1k Output Amplitude (dBu) Frequency (Hz) OUTPUT VOLTAGE NOISE SPECTRAL DENSITY vs FREQUENCY OUTPUT NOISE VOLTAGE vs NOISE BANDWIDTH 10k 10k 20k 100 Noise Voltage (µVrms) Voltage Noise (nV/√Hz) THD+Noise (%) 0.1 1k 100 10 10 1 0.1 1 10 100 1k 10k 100k 1M 1 Frequency (Hz) 100 1k Frequency (Hz) ® INA134/2134 10 4 10k 100k TYPICAL PERFORMANCE CURVES (CONT) At TA = +25°C, VS = ±18V, unless otherwise noted. GAIN vs FREQUENCY COMMON-MODE REJECTION vs FREQUENCY 100 Common-Mode Rejection (dB) 10 Voltage Gain (dB) 0 –10 –20 80 60 40 20 0 –30 1k 10k 100k 1M 10M 1k 10k Frequency (Hz) POWER SUPPLY REJECTION vs FREQUENCY 1M CHANNEL SEPARATION vs FREQUENCY 130 120 RL = 100kΩ 100 80 Channel Separation (dB) Power Supply Rejection (dB) 100k Frequency (Hz) –PSR 60 40 +PSR 20 0 120 RL = 2kΩ 110 100 90 100 1k 10k 100k 20 1M 100 1k 10k 20k Frequency (Hz) Frequency (Hz) MAXIMUM OUTPUT VOLTAGE vs FREQUENCY INPUT COMMON-MODE VOLTAGE RANGE vs OUTPUT VOLTAGE 40 40 VS = ±18V Common-Mode Voltage (V) Output Voltage (Vp-p) 30 30 20 10 20 10 0 –10 –20 –30 –40 VREF = 0V RL = 2kΩ –50 0 100 1k 10k 100k 1M –20 10M –15 –10 –5 0 5 10 15 20 Output Voltage (V) Frequency (Hz) ® 5 INA134/2134 TYPICAL PERFORMANCE CURVES (CONT) At TA = +25°C, VS = ±18V, unless otherwise noted. SLEW RATE vs TEMPERATURE QUIESCENT CURRENT vs TEMPERATURE 4 16 3 14 Slew Rate (V/µs) Quiescent Current (mA) –SR 2 1 +SR 12 10 8 0 –75 –50 –25 0 25 50 75 100 –75 125 –50 –25 0 25 50 75 100 125 Temperature (°C) Temperature (°C) SHORT-CIRCUIT CURRENT vs TEMPERATURE QUIESCENT CURRENT vs SUPPLY VOLTAGE 80 3 40 Quiescent Current (mA) Short-Circuit Current (mA) 60 +ISC 20 0 –20 –ISC –40 2 1 –60 0 –80 –75 –50 –25 0 25 50 75 100 125 ±4 Temperature (°C) ±10 ±12 ±14 ±16 ±18 OFFSET VOLTAGE DRIFT PRODUCTION DISTRIBUTION 25 Typical Production Distribution of Packaged Units. Percent of Amplifiers (%) Typical Production Distribution of Packaged Units. 15 10 5 0 20 15 10 5 0 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 –1000 –900 –800 –700 –600 –500 –400 –300 –200 –100 0 100 200 300 400 500 600 700 800 900 1000 Percent of Amplifiers (%) 20 ±8 Supply Voltage (V) OFFSET VOLTAGE PRODUCTION DISTRIBUTION 25 ±6 Offset Voltage Drift (µV/°C) Offset Voltage (µV) ® INA134/2134 6 TYPICAL PERFORMANCE CURVES (CONT) At TA = +25°C, VS = ±18V, unless otherwise noted. SMALL-SIGNAL OVERSHOOT vs LOAD CAPACITANCE OUTPUT VOLTAGE SWING vs OUTPUT CURRENT 70 17 –55°C 60 15 25°C 14 50 Overshoot (%) 125°C 13 85°C 12 –12 85°C 125°C –13 –14 –15 25°C –16 40 30 20 RL = 2kΩ 100mV Step 10 –55°C 0 –17 0 ±20 ±40 ±60 ±80 0 ±100 400 800 1200 1600 2000 Load Capacitance (pF) Output Current (mA) LARGE-SIGNAL STEP RESPONSE CL = 500pF SMALL-SIGNAL STEP RESPONSE CL = 100pF 5V/div 50mV/div Output Voltage Swing (V) 16 CL = 500pF 1µs/div 1µs/div ® 7 INA134/2134 APPLICATIONS INFORMATION V+ V– Figure 1 shows the basic connections required for operation of the INA134. Decoupling capacitors are strongly recommended in applications with noisy or high impedance power supplies. The capacitors should be placed close to the device pins as shown in Figure 1. All circuitry is completely independent in the dual version assuring lowest crosstalk and normal behavior when one amplifier is overdriven or short-circuited. 1µF 1µF 7 4 INA134 –In V2 As shown in Figure 1, the differential input signal is connected to pins 2 and 3. The source impedances connected to the inputs must be nearly equal to assure good commonmode rejection. A 10Ω mismatch in source impedance will degrade the common-mode rejection of a typical device to approximately 74dB. If the source has a known impedance mismatch, an additional resistor in series with the opposite input can be used to preserve good common-mode rejection. 2 R2 25kΩ R1 25kΩ 5 6 VOUT = V3 – V2 +In 3 V3 Do not interchange pins 1 and 3 or pins 2 and 5, even though nominal resistor values are equal. These resistors are laser trimmed for precise resistor ratios to achieve accurate gain and highest CMR. Interchanging these pins would not provide specified performance. R4 25kΩ R3 25kΩ 1 FIGURE 1. Precision Difference Amplifier (Basic Power Supply and Signal Connections). INA134 AUDIO PERFORMANCE The INA134 and INA2134 were designed for enhanced ac performance. Very low distortion, low noise, and wide bandwidth provide superior performance in high quality audio applications. Laser-trimmed matched resistors provide optimum common-mode rejection (typically 90dB), especially when compared to circuits implemented with an op amp and discrete precision resistors. In addition, high slew rate (14V/µs) and fast settling time (3µs to 0.01%) ensure good dynamic performance. R1 R2 5 6 10Ω V3 3 VO R3 R4 The INA134 and INA2134 have excellent distortion characteristics. THD+Noise is below 0.002% throughout the audio frequency range. Up to approximately 10kHz distortion is below the measurement limit of commonly used test equipment. Furthermore, distortion remains relatively flat over its wide output voltage swing range (approximately 1.7V from either supply). +15V VO = V3 – V2 Offset Adjustment Range = ±300µV 1 499kΩ 100kΩ 10Ω –15V FIGURE 2. Offset Adjustment. OFFSET VOLTAGE TRIM The INA134 and INA2134 are laser trimmed for low offset voltage and drift. Most applications require no external offset adjustment. Figure 2 shows an optional circuit for trimming the output offset voltage. The output is referred to the output reference terminal (pin 1), which is normally grounded. A voltage applied to the Ref terminal will be summed with the output signal. This can be used to null offset voltage as shown in Figure 2. The source impedance of a signal applied to the Ref terminal should be less than 10Ω to maintain good common-mode rejection. ® INA134/2134 2 V2 8 INA134 5 2 INA134 V1 6 1 V1 –In V0 = V1 + V2 1/2 OPA2134 5 2 R2 V2 3 6 R1 V2 INA134 –In 2 V0 0utput R2 FIGURE 3. Precision Summing Amplifier. 1/2 OPA2134 1 3 +In 5 VO = (1 + 2R2/R1) (V2 –V1) 6 3 BUF634 6 VO FIGURE 5. High Input Impedance Instrumentation Amplifier. +In 3 1 FIGURE 4. Boosting Output Current. The difference amplifier is a highly versatile building block that is useful in a wide variety of applications. See the INA105 data sheet for additional applications ideas, including: • Precision Summing Instrumentation Amplifier • Current Receiver with Compliance to Rails • Differential Input Voltage-to-Current Converter for Low IOUT • Isolating Current Source • Precision Absolute Value Buffer • Precision Voltage-to-Current Converter with Differential Inputs • Precision Unity-Gain Inverting Amplifier • ±10V Precision Voltage Reference • ±5V Precision Voltage Reference • Precision Unity-Gain Buffer • Differential Output Difference Amplifier • Isolating Current Source with Buffering Amplifier for Greater Accuracy • Precision Average Value Amplifier • Precision G = 2 Amplifier • Window Comparator with Window Span and Window Center Inputs • Precision Voltage-Controlled Current Source with Buffered Differential Inputs and Gain • Precision Summing Amplifier • Precision G = 1/2 Amplifier • Precision Bipolar Offsetting • Precision Summing Amplifier with Gain • Digitally Controlled Gain of ±1 Amplifier • Instrumentation Amplifier Guard Drive Generator ® 9 INA134/2134