LOW-POWER OPERATIONAL AMPLIFIER AND VOLTAGE COMPARATOR

LM392 LOW-POWER OPERATIONAL AMPLIFIER AND VOLTAGE COMPARATOR www.ti.com SLOS466 – JANUARY 2006 FEATURES • Wide Power-Supply Voltage Range – Single Supply: 3 V to 32 V – Dual Supply: ±1.5 V to ±16 V Low Supply-Current Drain Essentially Independent of Supply Voltage: 600 µA Low Input Biasing Current: 50 nA Low Input Offset Voltage: 2 mV Low Input Offset Current: 5 nA Input Common-Mode Voltage Range Includes Ground Differential Input Voltage Range Equals Power-Supply Voltage Additional Operational Amplifier Features – Internally Frequency Compensated for Unity Gain – Large DC Voltage Gain: 100 dB – Wide Bandwidth (Unity Gain): 1 MHz – Large Output Voltage Swing: 0 V to V+ – 1.5 V • Additional Comparator Features – Low Output Saturation Voltage: 250 mV at 4 mA – Output Voltage Compatible With All Types of Logic Systems • • • • • • • ADVANTAGES • • • Eliminates Need for Dual Power Supplies An Internally Compensated Operational Amplifier and a Precision Comparator in the Same Package Allows Sensing at or Near Ground xxx D, DGK, OR P PACKAGE (TOP VIEW) OUTPUT A (Comparator) 1 INVERTING INPUT A 2 NONINVERTING INPUT A 3 GND 4 − 8 V+ A + + B − 7 OUTPUT B (Operational Amplifier) 6 INVERTING INPUT B 5 NONINVERTING INPUT B DESCRIPTION/ORDERING INFORMATION The LM392 consists of two independent building-block circuits. One is a high-gain internally-frequency-compensated operational amplifier, and the other is a precision voltage comparator. Both the operational amplifier and the voltage comparator are designed to operate from a single power supply over a wide range of voltages. Both circuits have input stages that force the common-mode input down to ground when operating from a single power supply. Operation from split power supplies also is possible, and the low power-supply current is independent of the magnitude of the supply voltage. Applications include transducer amplifiers with pulse shapers, DC gain blocks with level detectors, and VCOs, as well as all conventional operational amplifier or voltage-comparator circuits. The LM392 can be operated directly from the standard 5-V power-supply voltage used in digital systems, and the output of the comparator interfaces directly with either TTL or CMOS logic. In addition, the low-power drain makes the LM392 extremely useful in the design of portable equipment. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 2006, Texas Instruments Incorporated LM392 LOW-POWER OPERATIONAL AMPLIFIER AND VOLTAGE COMPARATOR SLOS466 – JANUARY 2006 www.ti.com ORDERING INFORMATION TA PACKAGE (1) MSOP – DGK 0°C to 70°C PDIP – P SOIC – D (1) Reel of 250 Reel of 2500 Tube of 50 Tube of 75 Reel of 2500 ORDERABLE PART NUMBER LM392DGKT LM392DGKR LM392P LM392D LM392DR TOP-SIDE MARKING PREVIEW LM392P LM392 Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. SCHEMATIC DIAGRAM V+ 3.5 µA 100 µA 3.5 µA 100 µA 6 µA 4 µA 100 µA +INPUT –INPUT OUTPUT OUTPUT –INPUT +INPUT 50 µA Comparator Amplifier 2 Submit Documentation Feedback www.ti.com LM392 LOW-POWER OPERATIONAL AMPLIFIER AND VOLTAGE COMPARATOR SLOS466 – JANUARY 2006 (1) Absolute Maximum Ratings over operating free-air temperature range (unless otherwise noted) MIN V+ VID VIN II tshort θJA Tlead Tstg (1) (2) Supply voltage Differential input voltage Input voltage range Input current (2) Duration of output short circuit to ground (3) D package Package thermal impedance, junction to free air (4) Lead temperature during soldering Storage temperature range DGK package P package 10 s maximum –65 VIN < –0.3 V –0.3 Single supply Dual supply MAX 32 ±16 32 32 50 Continuous 97 172 84 260 150 °C °C °C/W UNIT V V V mA (3) (4) 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. This input current exists only when the voltage at any of the input leads is driven negative. It is due to the collector-base junction of the input PNP transistors becoming forward biased and thereby acting as input diode clamps. In addition to this diode action, there is also lateral NPN parasitic transistor action on the device. This transistor action can cause the output voltages of the amplifiers to go to the V+ voltage level (or to ground for a large overdrive) for the time duration that an input is driven negative. This is not destructive, and normal output states reestablish when the input voltage, which was negative, again returns to a value greater than –0.3 V (at 25°C). Short circuits from the output to V+ can cause excessive heating and eventual destruction. When considering short circuits to ground, the maximum output current is approximately 40 mA for the operational amplifier and 30 mA for the comparator, independent of the magnitude of V+. At values of supply voltage in excess of 15 V, continuous short circuits can exceed the power dissipation ratings and cause eventual destruction. Package thermal impedance is calculated in accordance with JESD 51-7. Recommended Operating Conditions MIN V+ TA Supply voltage Operating free-air temperature Single supply Dual supply 3 ±1.5 0 MAX 32 ±16 70 UNIT V °C Submit Documentation Feedback 3 LM392 LOW-POWER OPERATIONAL AMPLIFIER AND VOLTAGE COMPARATOR SLOS466 – JANUARY 2006 www.ti.com Electrical Characteristics V+ = 5 V (unless otherwise noted) PARAMETER VIO Input offset voltage TEST CONDITIONS At output switch point, VO ≈ 1.4 V, RS = 0 Ω, V+ = 5 V to 30 V, VCM = 0 V to (V+ – 1.5 V) IN(+) or IN(–), VCM = 0 V (1) IN(+) or IN(–) IN(+) – IN(–) V+ = 30 V RL = ∞ V+ = 30 V V+ = 5 V used) (4) TA 25°C 0°C to 70°C 25°C 0°C to 70°C 25°C 0°C to 70°C 25°C 0°C to 70°C 0°C to 70°C 25°C 0°C to 70°C 0 0 1 0.5 –100 32 ±5 50 MIN TYP ±2 MAX ±5 ±7 205 400 ±50 150 V+ – 1.5 V+ – 2 2 1 mV UNIT IIB IIO VCM I+ Input bias current Input offset current Input common-mode voltage (2) Supply current Amplifier-to-amplifier coupling nA nA V mA dB V f = 1 kHz to 20 kHz, Input referred (3) All VIN ≥ 0 V (or V–, if VDI (1) (2) (3) (4) Differential input voltage The direction of the input current is out of the device due to the PNP input stage. This current essentially is constant and independent of the state of the output, so no loading change exists on the input lines. The input common-mode voltage or either input signal voltage should not be allowed to go negative by more than 0.3 V. The upper end of the common-mode voltage range is V+ – 1.5 V, but either or both inputs can go to 32 V without damage. Due to proximity of external components, ensure that coupling is not originating via the stray capacitance between these external parts. This typically can be detected, as this type of capacitive coupling increases at higher frequencies. Positive excursions of input voltage may exceed the power-supply level. As long as the other input voltage remains within the common-mode range, the comparator provides a proper output state. The input voltage to the operational amplifier should not exceed the power-supply level. The input voltage state must not be less than –0.3 V (or 0.3 V below the magnitude of the negative power supply, if used) on either amplifier. Electrical Characteristics, Operational Amplifier Only V+ = 5 V (unless otherwise noted) PARAMETER AVD VOS CMRR kSVR Isource Isink αVIO αIIO Large signal voltage gain Output voltage swing Common-mode rejection ratio Power-supply rejection ratio Output source current Output sink current Input offset voltage drift Input offset current drift VIN(+) = 1 V, VIN(–) = 0 V, V+ = 15 V, VO = 2 V VIN(–) = 1 V, VIN(+) = 0 V, V+ = 15 V RS = 0 Ω RS = 0 Ω VO = 2 V VO = 200 mV 25°C 0°C to 70°C 0°C to 70°C TEST CONDITIONS V+ = 15 V, VO swing = 1 V to 11 V, RL = 2 kΩ RL = 2 kΩ VCM = 0 V to (V+ – 1.5 V) TA 25°C 25°C 25°C 25°C 25°C MIN 25 0 65 65 20 10 12 70 100 40 20 50 7 10 TYP 100 V+ – 1.5 MAX UNIT V/mV V dB dB mA mA µA µV/°C pA/°C 4 Submit Documentation Feedback www.ti.com LM392 LOW-POWER OPERATIONAL AMPLIFIER AND VOLTAGE COMPARATOR SLOS466 – JANUARY 2006 Electrical Characteristics, Comparator Only V+ = 5 V (unless otherwise noted) PARAMETER VG tLSR tR Isink VS ILO Voltage gain Large signal response time Response time Output sink current Saturation voltage Output leakage current TEST CONDITIONS RL ≥ 15 kΩ, V+ = 15 V VIN = TTL logic swing, VREF = 1.4 V, VRL = 5 V, RL = 5.1 kΩ VRL = 5 V, RL = 5.1 kΩ VIN(–) = 1 V, VIN(+) = 0 V, VO ≥ 1.5 V VIN(–) ≥ 1 V, VIN(+) = 0, ISINK ≤ 4 mA VIN(–) = 0, VIN(+) ≥ 1 V VO = 5 V VO = 30 V TA 25°C 25°C 25°C 25°C 25°C 0°C to 70°C 25°C 0°C to 70°C 0.1 1 6 MIN 50 TYP MAX 200 300 1.3 16 250 400 700 UNIT V/mV ns µs mA mV nA µA Submit Documentation Feedback 5 PACKAGE OPTION ADDENDUM www.ti.com 6-Dec-2006 PACKAGING INFORMATION Orderable Device LM392D LM392DGKR LM392DGKRG4 LM392DGKT LM392DGKTG4 LM392DR LM392P LM392PE4 (1) Status (1) ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE Package Type SOIC MSOP MSOP MSOP MSOP SOIC PDIP PDIP Package Drawing D DGK DGK DGK DGK D P P Pins Package Eco Plan (2) Qty 8 8 8 8 8 8 8 8 75 Gr