RS8524XP

RS8521, RS8522 RS8523, RS8524 Zero-Drift, Rail-to-Rail I/O CMOS Operational Amplifiers Features • • • • • • • • • • • • Description Low Offset Voltage: 1uV Input Offset Drift: 0.005μV/°C High Gain Bandwidth Product: 350KHz Rail-to-Rail Input and Output High Gain, CMRR, PSRR:130dB High Slew Rate: 0.17V/μs Low Noise: 3.2uVp-p (0.01~10Hz) Low Power Consumption: 60μA /op amp Overload Recovery Time:6us Low Supply Voltage: +2.5 V to +5.5 V No External Capacitors Required Extended Temperature: -40°C to +125°C The RS8521,RS8522,RS8524,RS8523(dual version &shutdown)series of CMOS operational amplifiers use auto-zero techniques to simultaneously provide very low offset voltage (5μV max) and near-zero drift over time and temperature. This family of amplifiers has ultralow noise, offset and power. This miniature, high-precision operational amplifiers offset high input impedance and rail-to-rail input and rail-to-rail output swing. With high gain-bandwidth product of 350KHz and slew rate of 0.17V/μs. Single or dual supplies as low as +2.5V(±1.25V) and up to +5.5V (±2.75V) may be used. The RS8521/RS8522/RS8524/RS8523(dual version with shutdown) are specified for the extended industrial and automotive temperature range (-40°C to 125°C). The RS8521 single amplifier is available in 5-lead SOT23, 8-lead MSOP8 and 8-lead SOIC packages, The RS8522 dual amplifier is available in 8-lead SOIC and 8-lead TSSOP narrow surface mount packages, The RS8523(dual version with shutdown) comes in Micro-SIZE MSOP-10. The RS8524 quad is available in 14-lead SOIC and 14lead narrow TSSOP packages. Applications • • • • • • • • Temperature Sensors Medical/Industrial Instrumentation Pressure Sensors Battery-Powered Instrumentation Active Filtering Weight Scale Sensor Strain Gage Amplifiers Power Converter/Inverter REV B.6 1 www.run-ic.com RS8521, RS8522 RS8523, RS8524 PIN CONFIGURATIONS V- 2 +IN 3 5 + - 4 NC 1 -IN 2 +IN 3 V- 4 8 NC OUT A 1 7 V+ -IN A 2 + 1 - OUT RS8522 RS8521 RS8521 6 OUT +IN A 3 5 NC V+ -IN SOT23-5 V- + A B+ 4 SOIC-8(SOP8),MSOP-8 8 V+ 7 OUTB 6 -IN B 5 +IN B SOIC-8(SOP8), MSOP-8,TDFN2x2-8 RS8524 RS8523 V+ 9 OUT B - 8 7 1 -IN A 2 - +IN A 3 + V- 4 En A 10 + OUT A OUT A A B 5 6 1 A D 14 OUT D 13 -IN D -IN A 2 +IN A 3 12 +IN D -IN B V+ 4 11 V- +IN B +IN B 5 10 +IN C 9 -IN C 8 OUT C En B MSOP-10 -IN B 6 OUT B 7 - + - + B + - + C SOIC-14(SOP14),TSSOP-14 Note: NC indicates no internal connection 2 www.run-ic.com RS8521, RS8522 RS8523, RS8524 ABSOLUTE MAXIMUM RATINGS (1) Supply Voltage, V+ to V-...............................................7.0V Input Terminals, Voltage (2) …………... – 0.5 to (V+) + 0.5V Current (2)…………………....…..... ±10mA Storage Temperature ……….…………… −65°C to +150°C Operating Temperature ……….………… −40°C to +125°C Junction Temperature................................................150°C Package Thermal Resistance @ TA = +25°C SOT23-5, SOT23-6………………….………………200°C/W MSOP-10, SOIC-8 …………………….…………... 150°C/W SOIC-14, TSSOP-14………….……….……………100°C/W Lead Temperature (Soldering, 10s) ……………........260°C ESD Susceptibility HBM …......................................................................5000V MM ……………………….........………………...……….400V ESD SENSITIVITY CAUTION 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. (1) Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may degrade device reliability. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those specified is not implied. (2) Input terminals are diode-clamped to the power-supply rails. Input signals that can swing more than 0.5V beyond the supply rails should be current-limited to 10mA or less. PACKAGE/ORDERING INFORMATION °C °C °C °C °C °C °C °C °C °C °C °C °C °C °C °C °C °C 3 www.run-ic.com RS8521, RS8522 RS8523, RS8524 ELECTRICAL CHARACTERISTICS Boldface limits apply over the specified temperature range, TA = –40°C to +125°C. (At TA = +250C, Vs=5V, RL = 10kΩ connected to VS/2, and VOUT = VS/2, unless otherwise noted.) PARAMETER CONDITION RS8521, RS8522, RS8523, RS8524 MIN TYP MAX UNIT OFFSET VOLTAGE Input Offset Voltage VS Temperature VS Power Supply Vos VCM = Vs/2 dVos/dT PSRR VS = +2.5V to +5.5V, VCM = 0 110 Channel Separation, dc 1 5 μV 0.005 0.05 μV/0C 130 dB 0.1 μV/V 10 pA 10 pA INPUT BIAS CURRENT Input Bias Current IB Input Offset Current Ios VCM = Vs/2 NOISE PERFORMANCE Input Voltage Noise enp-p f=0.01Hz to 10Hz 3.2 μVpp Input Voltage Noise enp-p f=0.01Hz to 1Hz 0.97 μVpp Input Voltage Noise Density en f=1KHz 140 nV/√Hz Input Current Noise Density in f=10Hz 15 fA/√Hz INPUT VOLTAGE RANGE Common-Mode Voltage Range VCM (V-)-0.1 Common-Mode Rejection Ratio CMRR (V–) – 0.1V < VCM < (V+)+ 0.1V 110 (V+)+0.1 V 130 dB Differential 1 pF Common-Mode 5 pF 130 dB 0.17 V/μs 350 KHz 6 us INPUT CAPACITANCE OPEN-LOOP GAIN Open-Loop Voltage Gain AOL RL=10KΩ, VO=0.3V to 4.7V, -40°C~125°C SR G=+1 110 DYNAMIC PERFORMANCE Slew Rate Gain-Bandwidth Product GBW Overload Recovery Time OUTPUT CHARACTERISTICS Output Voltage High Output Voltage Low Short-Circuit Current VOH VOL RL=100 KΩ to GND 4.99 4.998 V RL=10 KΩ to GND 4.95 4.98 V RL=100 KΩ to V+ 1 10 mV RL=10 KΩ to V+ 10 30 mV ISC 25 mA POWER SUOOLY Operating Voltage Range Quiescent Current/ Amplifier 2.5 IQ 60 5.5 V 87 uA SHUTDOWN tOFF 2 μs tON 1 ms VL (shutdown) VH (amplifier is active) 0 +0.8 V 0.75(V+) V+ V Input Bias Current of Enable Pin 50 IQSD 1 4 pA 5 uA www.run-ic.com RS8521, RS8522 RS8523, RS8524 TYPICAL CHARACTERISTICS At TA = +25C, Vs=5V, RL = 10kΩ connected to VS/2, VOUT = VS/2, unless otherwise noted. OFFSET VOLTAGE PRODUCTION DISTRIBUTION Population Number Of Amplifiers 6 OFFSET VOLTAGE DRIFT PRODUCTION DISTRIBUTION 5 4 3 2 1 0 -4 -3 -2 -1 0 1 2 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 3 Offset Voltage (uV) Input Offset Drift (nV/℃) OPEN−LOOP GAIN AND PHASE vs FREQUENCY INPUT BIAS CURRENT vs TEMPERATURE 100 10K 130 Phase 60 90 40 70 20 50 0 30 -20 10 10 140 100 1K 10K 100K 1K 100 10 1M -40 -20 0 20 40 60 80 100 120 140 Frequency(Hz) Temperature(℃) POWER−SUPPLY REJECTION RATIO vs FREQUENCY COMMON−MODE REJECTION RATIO vs FREQUENCY 140 120 120 100 100 CMRR(dB) PSRR(dB) 110 Input Bias Current(pA) 80 Phase Margin (°) Open-Loop Gain(dB) Gain 80 60 80 60 40 40 20 20 0 0 100 1K 10K 100K Frequency(Hz) 1M 100 10M 5 1K 10K 100K Frequency(Hz) 1M 10M www.run-ic.com RS8521, RS8522 RS8523, RS8524 TYPICAL CHARACTERISTICS At TA = +25C, Vs=5V, RL = 10kΩ connected to VS/2, VOUT = VS/2, unless otherwise noted. QUIESCENT CURRENT vs TEMPERATURE 59 56 58 55 Quiescent Current(uA) Quiescent Current(uA) QUIESCENT CURRENT vs TEMPERATURE 57 56 55 54 53 54 53 52 51 50 -40 -20 0 20 40 60 80 100 120 140 Temperature(℃) Vs=5V -40 -20 35 35 Source Current(mA) 40 30 25 20 30 25 20 15 15 10 10 -40 -20 0 20 40 60 80 100 120 140 Temperature(℃) Vs=2.7V SOURCE CURRENT vs TEMPERATURE 40 -40 -20 20 40 60 80 100 120 140 Temperature(℃) 0 20 40 60 80 100 120 140 Temperature(℃) SMALL−SIGNAL STEP RESPONSE LARGE−SIGNAL STEP RESPONSE CL=100PF CL=100PF 1V/div 50mV/div Sink Current(mA) SINK CURRENT vs TEMPERATURE 0 2us/div 10us/div 6 www.run-ic.com RS8521, RS8522 RS8523, RS8524 TYPICAL CHARACTERISTICS At TA = +25C, Vs=5V, RL = 10kΩ connected to VS/2, VOUT = VS/2, unless otherwise noted. POSITIVE OVERVOLTAGE RECOVERY 0V 0V Vs=±2.5V G=-100 VOUT Vs=±2.5V 5us/div 5us/div 0.01Hz TO 10Hz NOISE AT Vs=2.7V 1uV/div 2uV/div 0.01Hz TO 10Hz NOISE AT Vs=5V 10s/div 10s/div 0.01Hz TO 1Hz NOISE AT Vs=2.7V 500nV/div 0.01Hz TO 1Hz NOISE AT Vs=5V 500nV/div 0V 1V/div VOUT 200mV/div VIN 1V/div 200mV/div 0V VIN NEGATIVE OVERVOLTAGE RECOVERY 10s/div 10s/div 7 www.run-ic.com RS8521, RS8522 RS8523, RS8524 75% of the total supply voltage. The valid logic high signal can be up to 5.5V above the negative supply, independent of the positive supply voltage. A valid logic low is defined as < 0.8V above the V– supply pin. If dual or split power supplies are used, be sure that logic input signals are properly referred to the negative supply voltage. The Enable pin must be connected to a valid high or low voltage, or driven, not left open circuit. The logic input is a high-impedance CMOS input, with separate logic inputs provided on the dual version. For batteryoperated applications, this feature can be used to greatly reduce the average current and extend battery life. APPLICATION NOTES The RS8521, RS8522, RS8523, RS8524 series op amps are unity-gain stable and free from unexpected output phase reversal. They use autozeroing techniques to provide low offset voltage and very low drift over time and temperature. Good layout practice mandates use of a 0.1µF capacitor placed closely across the supply pins. For lowest offset voltage and precision performance, circuit layout and mechanical conditions should be optimized. Avoid temperature gradients that create thermoelectric (Seebeck) effects in thermocouple junctions formed from connecting dissimilar conductors. These thermally-generated potentials can be made to cancel by assuring that they are equal on both input terminals. The enable time includes one full autozero cycle required by the amplifier to return to VOS accuracy. Prior to this time, the amplifier functions properly, but with unspecified offset voltage. • Use low thermoelectric-coefficient connections (avoid dissimilar metals). • Thermally isolate components supplies or other heat-sources. from Disable time is 1µs. When disabled, the output assumes a high-impedance state. This allows the RS8523 to be operated as a gated amplifier, or to have the output multiplexed onto a common analog output bus. power • Shield op amp and input circuitry from air currents, such as cooling fans. Following these guidelines will reduce the likelihood of junctions being at different temperatures, which can cause thermoelectric voltages of 0.1µV/°C or higher, depending on materials used. LAYOUT GUIDELINES Attention to good layout practices is always recommended. Keep traces short. When possible, use a PCB ground plane with surface-mount components placed as close to the device pins as possible. Place a 0.1µF capacitor closely across the supply pins. These guidelines should be applied throughout the analog circuit to improve performance and provide benefits such as reducing the EMI (electromagnetic-interference) susceptibility. OPERATING VOLTAGE The RS8521, RS8522, RS8523, RS8524 series op amps operate over a power-supply range of +2.5V to +5.5V (±1.25V to ±2.75V). Supply voltages higher than 7V (absolute maximum) can permanently damage the amplifier. Parameters that vary over supply voltage or temperature are shown in the Typical Characteristics section of this data sheet. RS8523 ENABLE FUNCTION The enable/shutdown digital input is referenced to the V– supply voltage of the amp. A logic high enables the op amp. A valid logic high is defined as > Figure 1. The Layout of Guard Ring 8 www.run-ic.com RS8521, RS8522 RS8523, RS8524 PACKAGE OUTLINE DIMENSIONS SOT23-5 D 1.90 b 2.59 E1 E 0.99 0.95 0.69 e e1 RECOMMENDED LAND PATTERN (Unit: mm) 0.2 A A2 L A1 Symbol c θ Dimensions In Millimeters Dimensions In Inches Min Max Min Max A 1.050 1.250 0.041 0.049 A1 0.000 0.100 0.000 0.004 A2 1.050 1.150 0.041 0.045 b 0.300 0.500 0.012 0.020 c 0.100 0.200 0.004 0.008 D 2.820 3.020 0.111 0.119 E 1.500 1.700 0.059 0.067 E1 2.650 2.950 0.104 0.116 e 0.950(BSC) 0.037(BSC) e1 1.800 2.000 0.071 0.079 L 0.300 0.600 0.012 0.024 θ 0° 8° 0° 8° 9 www.run-ic.com RS8521, RS8522 RS8523, RS8524 MSOP-8 b e E E1 4.8 1.02 D 0.65 0.41 RECOMMENDED LAND PATTERN (Unit: mm) A2 c A A1 L Symbol Dimensions In Millimeters θ Dimensions In Inches Min Max Min Max A 0.820 1.100 0.032 0.043 A1 0.020 0.150 0.001 0.006 A2 0.750 0.950 0.030 0.037 b 0.250 0.380 0.010 0.015 c 0.090 0.230 0.004 0.009 D 2.900 3.100 0.114 0.122 e 0.650(BSC) 0.026(BSC) E 2.900 3.100 0.114 0.122 E1 4.750 5.050 0.187 0.199 L 0.400 0.800 0.016 0.031 θ 0° 6° 0° 6° 10 www.run-ic.com RS8521, RS8522 RS8523, RS8524 MSOP-10 b e E 4.65 E1 1.02 0.31 D 0.5 RECOMMENDED LAND PATTERN (Unit: mm) A2 A1 Symbol A c L Dimensions In Millimeters θ Dimensions In Inches Min Max Min Max A 0.820 1.100 0.032 0.043 A1 0.020 0.150 0.001 0.006 A2 0.750 0.950 0.030 0.037 b 0.180 0.280 0.007 0.011 c 0.090 0.230 0.004 0.009 D 2.900 3.100 0.114 0.122 e 0.50(BSC) 0.020(BSC) E 2.900 3.100 0.114 0.122 E1 4.750 5.050 0.187 0.199 L 0.400 0.800 0.016 0.031 θ 0° 6° 0° 6° 11 www.run-ic.com RS8521, RS8522 RS8523, RS8524 TSSOP-14 e b 5.6 E1 E 1.78 D 0.65 0.42 RECOMMENDED LAND PATTERN (Unit: mm) A2 A A1 Symbol H C θ L Dimensions In Millimeters Min Max A Dimensions In Inches Min Max 1.200 0.047 A1 0.050 0.150 0.002 0.006 A2 0.800 1.050 0.031 0.041 b 0.190 0.300 0.007 0.012 c 0.090 0.200 0.004 0.008 D 4.860 5.100 0.191 0.201 E 4.300 4.500 0.169 0.177 E1 6.250 6.550 0.246 0.258 e L 0.650(BSC) 0.500 H θ 0.026(BSC) 0.700 0.020 0.25(TYP) 1° 0.028 0.01(TYP) 7° 12 1° 7° www.run-ic.com RS8521, RS8522 RS8523, RS8524 SOIC-8(SOP8) b e 5.2 E E1 2.2 D 1.27 0.6 RECOMMENDED LAND PATTERN (Unit: mm) A2 c A A1 L Symbol Dimensions In Millimeters θ Dimensions In Inches Min Max Min Max A 1.350 1.750 0.053 0.069 A1 0.100 0.250 0.004 0.010 A2 1.350 1.550 0.053 0.061 b 0.330 0.510 0.013 0.020 c 0.170 0.250 0.007 0.010 D 4.800 5.000 0.189 0.197 e 1.270(BSC) 0.050(BSC) E 5.800 6.200 0.228 0.244 E1 3.800 4.000 0.150 0.157 L 0.400 1.270 0.016 0.050 θ 0° 8° 0° 8° 13 www.run-ic.com RS8521, RS8522 RS8523, RS8524 SOIC-14(SOP14) e b 5.2 1.27 E E1 0.6 D 1.27 RECOMMENDED LAND PATTERN (Unit: mm) A2 A1 A c θ L Symbol Dimensions In Millimeters Dimensions In Inches Min Max Min Max A 1.350 1.750 0.053 0.069 A1 0.100 0.250 0.004 0.010 A2 1.350 1.550 0.053 0.061 b 0.310 0.510 0.012 0.020 c 0.100 0.250 0.004 0.010 D 8.450 8.850 0.333 0.348 e 1.270(BSC) 0.050(BSC) E 5.800 6.200 0.228 0.244 E1 3.800 4.000 0.150 0.157 L 0.400 1.270 0.016 0.050 θ 0° 8° 0° 8° 14 www.run-ic.com RS8521, RS8522 RS8523, RS8524 TDFN2x2-8 E e D E1 L b D1 TOP VIEW BOTTOM VIEW 0.50 0.70 A1 1.95 A2 A 0.65 0.24 1.20 SIDE VIEW RECOMMENDED LAND PATTERN (Unit: mm) Symbol Dimensions In Millimeters Dimensions In Inches Min Max Min Max A 0.700 0.800 0.028 0.031 A1 0.000 0.050 0.000 0.002 A2 0.203(TYP) 0.008(TYP) b 0.180 0.300 0.007 0.012 D 1.900 2.100 0.075 0.083 D1 1.100 1.300 0.043 0.051 E 1.900 2.100 0.075 0.083 E1 0.600 0.800 0.024 0.031 e L 0.500(TYP) 0.250 0.020(TYP) 0.450 15 0.010 0.018 www.run-ic.com