LMV358ADTR

XBLW LMV321A, LMV358A, LMV324A 1MHz, General Purpose, RRIO CMOS Amplifiers General Description The XBLW LMV321A (single), XBLW LMV358A (dual) and XBLW LMV324A (quad) are general purpose, low offset, high frequency response and micro power operational amplifiers. With an excellent bandwidth of 1MHz, a slew rate of 0.8V/μs, and a quiescent current of 80μA per amplifier at 5V, the XBLW LMV321A/358A/324A family can be designed into a wide range of applications. The XBLW LMV321A/358A/324A op-amps are designed to provide optimal performance in low voltage and low power systems. The input common-mode voltage range includes ground, and the maximum input offset voltage are 4.5mV. These parts provide rail-to-rail output swing into heavy loads. The XBLW LMV321A/358A/324A family is specified for single or dual power supplies of +2.3V to +5.5V. All models are specified over the extended industrial temperature range of -40℃ to +125℃. The XBLW LMV321A is available in 5-lead SOT-23 and SC70-5 package. The XBLW LMV358A is available in 8-lead SOP package. The XBLW LMV324A is available in 14-lead SOP package. Features             General Purpose 1MHz Amplifiers, Low Cost High Slew Rate: 0.8V/μs Low Offset Voltage: 4.5 mV Maximum Low Power: 80μA per Amplifier Supply Current Settling Time to 0.1% with 2V Step: 4.2 μs Unit Gain Stable Rail-to-Rail Input and Output Input Voltage Range: -0.1V to +5.1V at 5V Supply Operating Power Supply: +2.3V to +5.5V Operating Temperature Range: -40℃ to +125℃ ESD Rating: HBM-4kV, CDM-2kV Upgrade to LMV321A/LMV358A/LMV324A Family Applications         Smoke/Gas/Environment Sensors Audio Outputs Battery and Power Supply Control Portable Equipment and Mobile Devices Active Filters Sensor Interfaces Battery-Powered Instrumentation Medical Instrumentation Ordering Information DEVICE Package Type MARKING Packing Packing QTY LMV321ATDTR SOT23-5 V321A Tape 3000/Reel LMV321ACDTR SC70-5 V321A Tape 3000/Reel LMV358ADTR SOP-8 LMV358A Tape 2500/Reel LMV358AMDTR MSOP-8 V358AM Tape 3000/Reel LMV358ATDTR TSSOP-8 V358AT Tape 3000/Reel LMV324ADTR SOP-14 LMV324A Tape 2500/Reel LMV324ATDTR TSSOP-14 V324AT Tape 2500/Reel XBLWversion1.0 文档仅供参考，实际应用测试为准 www.xinboleic.com 技术支持热线：4009682003 第 1 页 共 12 页 XBLW LMV321A, LMV358A, LMV324A 1MHz, General Purpose, RRIO CMOS Amplifiers Pin Configurations LMV321A LMV358A LMV324A Figure 1 Pin Configurations Pin Description Symbol Description -IN Negative (inverting) input. +IN Positive (noninverting) input. -INA, -INB -INC, -IND Inverting Input of the Amplifier. The Voltage range can go from (VS– – 0.1V) to (VS+ + 0.1V). +INA, +INB +INC, +IND Non-Inverting Input of Amplifier. This pin has the same voltage range as -IN. Positive Power Supply. The voltage is from 2.3V to 5.5V. Split supplies are possible as long as the voltage between VS+ and VS– is between 2.3V and 5.5V. A bypass capacitor of 0.1μF as close to the part as possible should be used between power supply pins or between supply pins and ground +VS Negative Power Supply. It is normally tied to ground. It can also be tied to a voltage other than ground as long as the voltage between VS+ and VS– is from 2.3V to 5.5V. If it is not connected to ground, bypass it with a capacitor of 0.1μF as close to the part as possible. -VS OUT Output. OUTA, OUTB OUTC, OUTD Amplifier Output Absolute Maximum Ratings (TA= 25℃) Symbol Description Value Units VS+,V S- Supply Voltage, VS+ to VS– 7.0 V VCM Common-Mode Input Voltage VS– – 0.3 to VS+ + 0.3 V HBM ±4000 V ESD Electrostatic Discharge Voltage CDM ±2000 V TJ Junction Temperature 160 °C TSTG Storage Temperature Range -65 to +150 °C(TJ) TJL Lead Temperature Range (Soldering 10 sec) 260 °C Notes: 1. Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under XBLWversion1.0 文档仅供参考，实际应用测试为准 www.xinboleic.com 技术支持热线：4009682003 第 2 页 共 12 页 XBLW LMV321A, LMV358A, LMV324A 1MHz, General Purpose, RRIO CMOS Amplifiers Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. 2. Provided device does not exceed maximum junction temperature (TJ) at any time. Electrical Characteristics VS = 5.0V, TA = +25℃, VCM = VS/2, VO = VS/2, and RL = 10kΩ connected to VS/2, unless otherwise noted. Symbol Parameter Conditions Min. Typ. Max. Input offset voltage -4.5 ±1.0 +4.5 Over temperature -4.8 Unit INPUT CHARACTERISTICS VOS VOS TC 1 Over temperature 500 Input offset current 1 VCM Common-mode voltage range Common-mode rejection ratio Over temperature CMRR AVOL Over temperature Input resistance CIN Input capacitance pA pA VS++0.1 V 90 VCM = 0.05V to 3.5V 80 VCM = VS––0.1 to VS++0.1 V Open-loop voltage gain RIN VS––0.1 85 Over temperature μV/°C 2.3 Input bias current IB IOS Over Temperature Offset voltage drift mV +4.8 dB 75 110 VO = 0.05 to 3.5 V 100 dB GΩ 100 Differential 2.0 Common mode 3.5 pF OUTPUT CHARACTERISTICS VOH High output voltage swing VS+ –8 mV VOL Low output voltage swing 8 mV ZOUT ISC Closed-loop output impedance Open-loop output impedance Short-circuit current f = 200kHz, G = +1 0.4 f = 1MHz, IO = 0 2.6 Source current through 10Ω 40 Sink current through 10Ω 40 f = 1kHz 1.0 MHz CL = 100pF 62 ° G = +1, CL = 100pF, VO = 1.5V to 3.5V 0.8 V/μs Ω mA DYNAMIC PERFORMANCE GBW Gain bandwidth product ΦM SR XBLWversion1.0 Phase margin Slew rate 文档仅供参考，实际应用测试为准 www.xinboleic.com 技术支持热线：4009682003 第 3 页 共 12 页 XBLW LMV321A, LMV358A, LMV324A 1MHz, General Purpose, RRIO CMOS Amplifiers Electrical Characteristics VS = 5.0V, TA = +25℃, VCM = VS/2, VO = VS/2, and RL = 10kΩ connected to VS/2, unless otherwise noted. Symbol Parameter tS Settling time Conditions Min. To 0.1%, G = +1, 2V step Overload recovery time THD+N Total harmonic distortion+Noise Max. 4.2 To 0.01%, G = +1, 2V step tOR Typ. Unit μs 5.2 VIN * Gain > VS f = 1kHz, G = +1, VO=3VPP 2 μs 0.003 % 13 μVP-P NOISE PERFORMANCE Vn Input voltage noise f = 0.1 to 10 Hz en Input voltage noise density f = 1kHz 35 nV/√Hz In Input current noise density f = 10kHz 6 fA/√Hz POWER SUPPLY VS PSRR Operating supply voltage Power supply rejection ratio Over temperature IQ 2.3 5.5 98 VS = 2.7V to 5.5V, VCM < VS+ − 2V V dB 85 Quiescent current (per amplifier) 80 120 Over temperature 85 130 μA THERMAL CHARACTERISTICS TA θJA Operating temperature range -40 Package thermal resistance +125 SOT23-5 190 SO-8 125 SO-14 115 °C ℃/W Specifications subject to changes without notice XBLWversion1.0 文档仅供参考，实际应用测试为准 www.xinboleic.com 技术支持热线：4009682003 第 4 页 共 12 页 XBLW LMV321A, LMV358A, LMV324A 1MHz, General Purpose, RRIO CMOS Amplifiers Typical Performance Characteristics At TA = +25℃, VCM = VS/2, and RL = 10kΩ connected to VS/2, unless otherwise noted. Figure 2 Open-loop Gain and Phase as function of Frequency Figure 3 Power Supply and Common-mode RejectionRatio a as a function of Frequency Figure 4 Input Offset Voltage Production DistributionFigure 5 Channel Separation as a function of Frequency Figure 6 Large-Signal Step Response at 2.7V Figure 8 Large-Signal Step Response at 5V XBLWversion1.0 Figure 7 Small-Signal Step Response at 2.7V Figure 9 Small-Signal Step Response at 5V 文档仅供参考，实际应用测试为准 www.xinboleic.com 技术支持热线：4009682003 第 5 页 共 12 页 XBLW LMV321A, LMV358A, LMV324A 1MHz, General Purpose, RRIO CMOS Amplifiers Application Notes 1. LOW INPUT BIAS CURRENT The XBLW LMV321A/358A/324A family is a CMOS op-amp family and features very low input bias current in pA range. The low input bias current allows the amplifiers to be used in applications with high resistance sources. Care must be taken to minimize PCB Surface Leakage. See below section on “PCB Surface Leakage” for more details. 2. PCB SURFACE LEAKAGE In applications where low input bias current is critical, Printed Circuit Board (PCB) surface leakage effects need to be considered. Surface leakage is caused by humidity, dust or other contamination on the board. Under low humidity conditions, a typical resistance between nearby traces is 1012Ω. A 5V difference would cause 5pA of current to flow, which is greater than the XBLW LMV321A/358A/324A’s input bias current at +25℃ (±1fA, typical). It is recommended to use multi-layer PCB layout and route the op-amp’s -IN and +IN signal under the PCB surface. The effective way to reduce surface leakage is to use a guard ring around sensitive pins (or traces). The guard ring is biased at the same voltage as the sensitive pin. An example of this type of layout is shown in Figure 10 for Inverting Gain application. 1. For Non-Inverting Gain and Unity-Gain Buffer: a) Connect the non-inverting pin (+IN) to the input with a wire that does not touch the PCB surface. b) Connect the guard ring to the inverting input pin (-IN). This biases the guard ring to the Common Mode input voltage. 2. For Inverting Gain and Trans-impedance Gain Amplifiers (convert current to voltage, such as photo detectors): a) Connect the guard ring to the non-inverting input pin (+IN). This biases the guard ring to the same reference voltage as the op-amp (e.g., VS/2 or ground). b) Connect the inverting pin (-IN) to the input with a wire that does not touch the PCB surface. 3. GROUND SENSING AND RAIL TO RAIL The input common-mode voltage range of the XBLW LMV321A/358A/324A series extends 100mV beyond the supply rails. This is achieved with a complementary input stage—an N- channel input differential pair in parallel with a P -channel differential pair. For normal operation, inputs should be limited to this range. The absolute maximum input voltage is 300mV beyond the supplies. Inputs greater than the input common-mode range but less than the maximum input voltage, while not valid, will not cause any damage to the op-amp. Unlike some other op-amps, if input current is limited, the inputs may go beyond the supplies without phase inversion, as shown in Figure 11. Since the input commonmode range extends from (VS− − 0.1V) to (VS+ + 0.1V), the XBLW LMV321A/358A/324A op-amps can easily perform ‘true ground’ sensing. Figure 11 No Phase Inversion with Inputs Greater Than the Power-Supply Voltage XBLWversion1.0 文档仅供参考，实际应用测试为准 www.xinboleic.com 技术支持热线：4009682003 第 6 页 共 12 页 XBLW LMV321A, LMV358A, LMV324A 1MHz, General Purpose, RRIO CMOS Amplifiers ail-to-rail output. For light resistive loads (e.g. 100kΩ), the output voltage can typically swing to within 5mV from the supply rails. With moderate resistive loads (e.g. 10kΩ), the output can typically swing to within 10mV from the supply rails and maintain high open-loop gain. The maximum output current is a function of total supply voltage. As the supply voltage to the amplifier increases, the output current capability also increases. Attention must be paid to keep the junction temperature of the IC below 150°C when the output is in continuous short-circuit. The output of the amplifier has reverse-biased ESD diodes connected to each supply. The output should not be forced more than 0.5V beyond either supply, otherwise current will flow through these diodes. 4. CAPACITIVE LOAD AND STABILITY The XBLW LMV321A/358A/324A can directly drive 1nF in unity-gain without oscillation. The unity-gain follower (buffer) is the most sensitive configuration to capacitive loading. Direct capacitive loading reduces the phase margin of amplifiers and this results in ringing or even oscillation. Applications that require greater capacitive drive capability should use an isolation resistor between the output and the capacitive load like the circuit in Figure 12. The isolation resistor RISO and the load capacitor CL form a zero to increase stability. The bigger the RISO resistor value, the more stable VOUT will be. Note that this method results in a loss of gain accuracy because RISO forms a voltage divider with the RL. Figure 12 Indirectly Driving Heavy Capacitive Load An improvement circuit is shown in Figure 13. It provides DC accuracy as well as AC stability. The RF provides the DC accuracy by connecting the inverting signal with the output. The CF and RISO serve to counteract the loss of phase margin by feeding the high frequency component of the output signal back to the amplifier’s inverting input, thereby preserving phase margin in the overall feedback loop. Figure 13 Indirectly Driving Heavy Capacitive Load with DC Accuracy For no-buffer configuration, there are two others ways to increase the phase margin: (a) by increasing the amplifier’s gain, or (b) by placing a capacitor in parallel with the feedback resistor to counteract the parasitic capacitance associated with inverting node. 5. POWER SUPPLY LAYOUT AND BYPASS The XBLW LMV321A/358A/324A family operates from either a single +2.3V to +5.5V supply or dual ±1.15V to ±2.75V supplies. For single-supply operation, bypass the power supply VS with a ceramic capacitor (i.e. 0.01μF to 0.1μF) which should be placed close (within 2mm for good high frequency performance) to the VS pin. For dual-supply operation, both the VS+ and the VS- supplies should be bypassed to ground with separate 0.1μF ceramic capacitors. A bulk capacitor (i.e. 2.2μF or larger tantalum capacitor) within 100mm to provide large, slow currents and better performance. This bulk capacitor can be shared with other analog parts. XBLWversion1.0 文档仅供参考，实际应用测试为准 www.xinboleic.com 技术支持热线：4009682003 第 7 页 共 12 页 XBLW LMV321A, LMV358A, LMV324A 1MHz, General Purpose, RRIO CMOS Amplifiers Good PC board layout techniques optimize performance by decreasing the amount of stray capacitance at the opamp’s inputs and output. To decrease stray capacitance, minimize trace lengths and widths by placing external components as close to the device as possible. Use surface-mount components whenever possible. For the op-amp, soldering the part to the board directly is strongly recommended. Try to keep the high frequency big current loop area small to minimize the EMI (electromagnetic interfacing). 6. GROUNDING A ground plane layer is important for the XBLW LMV321A/358A/324A circuit design. The length of the current path speed currents in an inductive ground return will create an unwanted voltage noise. Broad ground plane areas will reduce the parasitic inductance. 7. INPUT-TO-OUTPUT COUPLING To minimize capacitive coupling, the input and output signal traces should not be parallel. This helps reduce unwanted positive feedback. Typical Application Circuits 1. DIFFERENTIALAMPLIFIER Figure 14 Differential Amplifier The circuit shown in Figure 14 performs the difference function. If the resistors ratios are equal R4/R3 = R2/R1, then: VOUT = (Vp – Vn) × R2/R1 + VREF 2. INSTRUMENTATION AMPLIFIER VOUT = (V1 – V2) × (1+ R1/R2 + 2R1/RG) + VREF Figure 15 Instrumentation Amplifier The XBLW LMV321A/358A/324A family is well suited for conditioning sensor signals in battery-powered applications. Figure 15 shows a two op-amp instrumentation amplifier, using the XBLW LMV358A op-amps. The circuit works well for applications requiring rejection of common-mode noise at higher gains. The reference voltage (VREF) is supplied by a low- impedance source. In single voltage supply applications, the VREF is typically VS/2. 3. BUFFERED CHEMICAL SENSORS XBLWversion1.0 文档仅供参考，实际应用测试为准 www.xinboleic.com 技术支持热线：4009682003 第 8 页 共 12 页 XBLW LMV321A, LMV358A, LMV324A 1MHz, General Purpose, RRIO CMOS Amplifiers Figure 16 Buffered pH Probe The XBLW LMV321A/358A/324A family has input bias current in the pA range. This is ideal in buffering high impedance chemical sensors, such as pH probes. As an example, the circuit in Figure 16 eliminates expansive lowleakage cables that is required to connect a pH probe (general purpose combination pH probes, e.g Corning 476540) to metering ICs such as ADC, AFE and/or MCU. An XBLW LMV321A/358A/324A op-amp and a lithium battery are housed in the probe assembly. A conventional low-cost coaxial cable can be used to carry the op-amp’s output signal to subsequent ICs for pH reading. 4. SHUNT-BASED CURRENT SENSING AMPLIFIER The current sensing amplification shown in Figure 8 has a slew rate of 2πfVPP for the output of sine wave signal, and has a slew rate of 2fVPP for the output of triangular wave signal. In most of motor control systems, the PWM frequency is at 10kHz to 20kHz, and one cycle time is 100μs for a 10kHz of PWM frequency. In current shunt monitoring for a motor phase, the phase current is converted to a phase voltage signal for ADC sampling. This sampling voltage signal must be settled before entering the ADC. As the Figure 19 shown, the total settling time of a current shunt monitor circuit includes: the rising edge delay time (tSR) due to the op-amp’s slew rate, and the measurement settling time (tSET). For a 3-shunt solution in motor phase current sensing, if the smaller duty cycle of the PWM is defined at 45% (In fact, the phase with minimum PWM duty cycle, such as 5%, is not detected current directly, and it can be calculated from the other two phase currents), and the tSR is required at 20% of a total time window for a phase current monitoring, in case of a 3.3V motor control system(3.3V MCU with 12-bit ADC), the op-amp’s slew rate should be more than: 3.3V / (100μs× 45% × 20%) = 0.37 V/μs At the same time, the op-amp’s bandwidth should be much greater than the PWM frequency, like 10 time at least. XBLWversion1.0 文档仅供参考，实际应用测试为准 www.xinboleic.com 技术支持热线：4009682003 第 9 页 共 12 页 XBLW LMV321A, LMV358A, LMV324A 1MHz, General Purpose, RRIO CMOS Amplifiers Package Information SC70-5 Symbol A A1 A2 b C D E E1 e e1 L L1 θ Dimensions In Millimeters Min Max 0.800 1.100 0.000 0.100 0.800 0.900 0.150 0.350 0.080 0.150 1.8500 2.150 1.100 1.400 1.950 2.200 0.850 typ. 1.200 1.400 0.42 ref. 0.260 0.460 0° 8° Dimensions In Inches Min Max 0.035 0.043 0.000 0.004 0.035 0.039 0.006 0.014 0.003 0.006 0.079 0.087 0.045 0.053 0.085 0.096 0.026 typ. 0.047 0.055 0.021 ref. 0.010 0.018 0° 8° SOT23-5 Symbol A A1 A2 b c D E E1 e e1 L L1 θ XBLWversion1.0 Dimensions In Millimeters Min Max 1.040 1.350 0.040 0.150 1.000 1.200 0.380 0.480 0.110 0.210 2.720 3.120 1.400 1.800 2.600 3.000 0.950 typ. 1.900 typ. 0.700 ref. 0.300 0.600 0° 8° 文档仅供参考，实际应用测试为准 www.xinboleic.com 技术支持热线：4009682003 Dimensions In Inches Min Max 0.042 0.055 0.002 0.006 0.041 0.049 0.015 0.020 0.004 0.009 0.111 0.127 0.057 0.073 0.106 0.122 0.037 typ. 0.078 typ. 0.028 ref. 0.012 0.024 0° 8° 第 10 页 共 12 页 XBLW LMV321A, LMV358A, LMV324A 1MHz, General Purpose, RRIO CMOS Amplifiers SOP-8 Symbol A A1 Dimensions In Millimeters Min Max 1.370 1.670 Dimensions In Inches Min Max 0.056 0.068 0.070 0.170 0.003 0.007 A2 1.300 1.500 0.053 0.061 b 0.306 0.506 0.013 0.021 C 0.203 typ. 0.008 typ. D 4.700 5.100 0.192 0.208 E 3.820 4.020 0.156 0.164 E1 5.800 6.200 0.237 0.253 e 1.270 typ. 0.050 typ. L 0.450 0.750 0.018 0.306 θ 0° 8° 0° 8° SOP-14 Symbol A A1 A2 A3 b C D E E1 e L1 L θ XBLWversion1.0 Dimensions In Millimeters Min Max 1.450 1.850 0.100 0.300 1.350 1.550 0.550 0.750 0.406typ. 0.203typ. 8.630 8.830 5.840 6.240 3.850 4.050 1.270 typ. 1.040 ref. 0.350 0.750 2° 8° Dimensions In Inches Min Max 0.059 0.076 0.004 0.012 0.055 0.063 0.022 0.031 0.017typ. 0.008typ. 0.352 0.360 0.238 0.255 0.157 0.165 0.050 typ. 0.041 ref. 0.014 0.031 2° 8° 文档仅供参考，实际应用测试为准 www.xinboleic.com 技术支持热线：4009682003 第 11 页 共 12 页 MSOP-8 TSSOP-8 XBLW LMV321A, LMV358A, LMV324A 1MHz, General Purpose, RRIO CMOS Amplifiers TSSOP-14 Statement：  Shenzhen xinbole electronics co., ltd. reserves the right to change the product specifications, without notice! Before placing an order, the customer needs to confirm whether the information obtained is the latest version, and verify the integrity of the relevant information.  Any semiconductor product is liable to fail or malfunction under certain conditions, and the buyer shall be responsible for complying with safety standards in the system design and whole machine manufacturing using Shenzhen xinbole electronics co., ltd products, and take appropriate security measures to avoid the potential risk of failure may result in personal injury or property losses of the situation occurred!  Product performance is never ending, Shenzhen xinbole electronics co., ltd will be dedicated to provide customers with better performance, better quality of integrated circuit products. XBLWversion1.0 文档仅供参考，实际应用测试为准 www.xinboleic.com 技术支持热线：4009682003 第 12 页 共 12 页