LP2901IDRG4Q1

LP2901-Q1 www.ti.com................................................................................................................................................ SLCS148A – SEPTEMBER 2005 – REVISED APRIL 2008 LOW-POWER QUAD DIFFERENTIAL COMPARATOR FEATURES 1 • • • • • • • • • • • • Qualified for Automotive Applications Wide Supply-Voltage Range . . . 3 V to 30 V Ultra-Low Power-Supply Current Drain . . . 60 µA Typ Low Input Biasing Current . . . 3 nA Low Input Offset Current . . . ±0.5 nA Low Input Offset Voltage . . . ±2 mV Common-Mode Input Voltage Includes Ground Output Voltage Compatible With MOS and CMOS Logic High Output Sink-Current Capability (30 mA at VO = 2 V) Power-Supply Input Reverse Voltage Protected Single Power-Supply Operation Pin-for-Pin Compatible With LM239, LM339, LM2901 D PACKAGE (TOP VIEW) 1OUT 2OUT VCC 2IN − 2IN + 1IN − 1IN + 1 14 2 13 3 12 4 11 5 10 6 7 9 8 3OUT 4OUT GND 4IN + 4IN − 3IN + 3IN − DESCRIPTION/ORDERING INFORMATION The LP2901 is a low-power quadruple differential comparator. The device consists of four independent voltage comparators designed specifically to operate from a single power supply and, typically, to draw 60-µA drain current over a wide range of voltages. Operation from split power supplies also is possible, and the ultra-low power-supply drain current is independent of the power-supply voltage. Applications include limit comparators, simple analog-to-digital converters, pulse generators, square-wave generators, time-delay generators, voltage-controlled oscillators, multivibrators, and high-voltage logic gates. The LP2901 is designed specifically to interface with the CMOS logic family. The ultra-low power-supply current makes these products desirable in battery-powered applications. The LP2901 is characterized for operation from –40°C to 85°C. ORDERING INFORMATION (1) TA –40°C to 85°C (1) (2) VIOMAX AT 25°C ±5 mV PACKAGE (2) SOIC – D Reel of 2500 ORDERABLE PART NUMBER LP2901IDRQ1 TOP-SIDE MARKING LP2901IQ1 For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI web site at www.ti.com. Package drawings, thermal data, and symbolization are available at www.ti.com/packaging. 1 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 © 2005–2008, Texas Instruments Incorporated LP2901-Q1 SLCS148A – SEPTEMBER 2005 – REVISED APRIL 2008................................................................................................................................................ www.ti.com SCHEMATIC DIAGRAM (EACH COMPARATOR) VCC 0.2 µA 5 µA 0.2 µA 6 µA IN+ OUT IN− GND Absolute Maximum Ratings (1) over operating free-air temperature range (unless otherwise noted) MIN (2) VCC Supply voltage VID Differential input voltage range (3) VI Input voltage range (either input) II Input current (4) –0.3 VI ≤ –0.3 V Duration of output short-circuit to ground (5) Continuous total power dissipation Package thermal impedance (7) (8) TA Operating free-air temperature range TJ Operating virtual junction temperature Tlead Lead temperature range Tstg Storage temperature range (1) (2) (3) (4) (5) (6) (7) (8) UNIT 36 V ±36 V 36 V –50 mA Unlimited See Dissipation Rating Table (6) θJA MAX 133.5 –40 1,6 mm (1/16 in) from case for 60 s –65 °C/W 85 °C 150 °C 300 °C 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. All voltage values, except differential voltages, are with respect to the network ground. Differential voltages are at IN+ with respect to IN–. This input current exists only when the voltage at any of the inputs is driven negative. The current flows through the collector-base junction of the input clamping device. In addition to the clamping device action, there is lateral n-p-n parasitic transistor action. This action is not destructive, and normal output states are reestablished when the input voltage returns to a value more positive than –0.3 V at TA = 25°C. Short circuits between outputs to VCC can cause excessive heating and eventual destruction. If the output transistors are allowed to saturate, the low-bias dissipation and the on-off characteristics of the outputs keep the dissipation very small (usually less than 100 mW). Maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any allowable ambient temperature is PD = (TJ(max) – TA)/θJA. Operating at the absolute maximum TJ of 150°C can impact reliability. The package thermal impedance is calculated in accordance with JESD 51 (low-K board). Dissipation Ratings 2 PACKAGE TA ≤ 25°C POWER RATING DERATING FACTOR ABOVE TA = 25°C TA = 70°C POWER RATING TA = 85°C POWER RATING D 936 mW 7.49 mW/°C 599 mW 486 mW Submit Documentation Feedback Copyright © 2005–2008, Texas Instruments Incorporated Product Folder Link(s): LP2901-Q1 LP2901-Q1 www.ti.com................................................................................................................................................ SLCS148A – SEPTEMBER 2005 – REVISED APRIL 2008 Recommended Operating Conditions VCC Supply voltage VIC Common-mode input voltage VI Input voltage TA Operating free-air temperature MIN MAX UNIT 3 30 VCC = 5 V 0 3 V VCC = 30 V 0 28 VCC = 5 V 0 3 VCC = 30 V 0 28 –40 85 °C TYP MAX UNIT ±2 ±5 V V Electrical Characteristics VCC = 5 V, TA = 25°C (unless otherwise noted) PARAMETER TA (1) TEST CONDITIONS VCC = 5 V to 30 V, VO = 2 V RS = 0 VIO Input offset voltage IIO Input offset current IIB Input bias current (3) VICR Common-mode input voltage range Single supply AVD Large-signal differential voltage amplification VCC = 15 V, RL = 15 kΩ Output sink current VI– = 1 V, VI+ = 0 , Full range 25°C 25°C Full range 25°C Full range ±0.5 ±5 ±1 ±15 –2.5 –25 –4 –40 VO = 2 V (4) 25°C 20 Full range 15 25°C 0.2 VO = 5 V 25°C VO = 30 V Full range Differential input voltage VI ≤ 0 (or VCC– on split supplies) ICC Supply current RL = ∞, All comparators nA nA V 0 to VCC – 2 VO = 0.4 V VID mV 0 to VCC – 1.5 500 VI+ = 1 V, VI– = 0 (4) ±9 Full range Output leakage current (1) (2) (3) MIN 25°C (2) V/mV 30 mA 0.7 0.1 nA 1 60 µA 36 V 100 µA Full range is –40°C to 125°C. VIO is measured over the full common-mode input voltage range. Because of the p-n-p input stage, the direction of the current is out of the device. This current essentially is constant (i.e., independent of the output state). No loading change exists on the reference or input lines as long as the common-mode input voltage range is not exceeded. The output sink current is a function of the output voltage. These devices have a bimodal output section that allows them to sink (via a Darlington connection) large currents at output voltages greater than 1.5 V and smaller currents at output voltages less than 1.5 V. Switching Characteristics VCC = 5 V, TA = 25°C, RL connected to 5 V through 5.1 kΩ PARAMETER Large-signal response time Response time TEST CONDITIONS TTL logic swing, Vref = 1.4 V TYP 1.3 8 Submit Documentation Feedback Copyright © 2005–2008, Texas Instruments Incorporated Product Folder Link(s): LP2901-Q1 UNIT µs 3 LP2901-Q1 SLCS148A – SEPTEMBER 2005 – REVISED APRIL 2008................................................................................................................................................ www.ti.com APPLICATION INFORMATION Figure 1 shows the basic configuration for using the LP2901 comparator. Figure 2 shows the diagram for using it as a CMOS driver. VCC VCC 30 kΩ IN + + 100 kΩ OUT IN − − IN + + IN − − 3 OUT 1/4 LP2901 Figure 1. Basic Comparator 12 1/4 LP2901 1/4 SN54/74LS00 or 1/4 SN54/74ALS1000A Figure 2. CMOS Driver All pins of any unused comparators should be grounded. The bias network of the LP2901 establishes a drain current that is independent of the magnitude of the power-supply voltage over the range of 2 V to 30 V. It usually is necessary to use a bypass capacitor across the power-supply line. The differential input voltage may be larger than VCC without damaging the device. Protection should be provided to prevent the input voltages from going negative by more than –0.3 V. The output section has two distinct modes of operation, the Darlington mode and the ground-emitter mode. This unique drive circuit permits the device to sink 30 mA at VO = 2 V in the Darlington mode and 700 µA at VO = 0.4 V in the ground-emitter mode. Figure 3 is a simplified schematic diagram of the output section. The output section is configured in a Darlington connection (ignoring Q3). If the output voltage is held high enough (above 1 V), Q1 is not saturated and the output current is limited only by the product of the hFE of Q1, the hFE of Q2, and I1 and the 60-Ω saturation resistance of Q2. The devices are capable of driving LEDs, relays, etc. in this mode while maintaining an ultra-low power-supply current of 60 µA typical. VCC I1 = 6 µA Q3 VO Q1 Q2 Figure 3. Output-Section Schematic Diagram 4 Submit Documentation Feedback Copyright © 2005–2008, Texas Instruments Incorporated Product Folder Link(s): LP2901-Q1 LP2901-Q1 www.ti.com................................................................................................................................................ SLCS148A – SEPTEMBER 2005 – REVISED APRIL 2008 Without transistor Q3, if the output voltage were allowed to drop below 0.8 V, transistor Q1 would saturate, and the output current would drop to zero. The circuit would be unable to pull low current loads down to ground or the negative supply, if used. Transistor Q3 has been included to bypass transistor Q1 under these conditions and apply the current I1 directly to the base of Q2. The output sink current now is approximately I1 times the hFE of Q2 (700 µA at VO = 0.4 V). The output of the devices exhibits a bimodal characteristic, with a smooth transition between modes. In both cases, the output is an uncommitted collector. Several outputs can be tied together to provide a dot logic function. An output pullup resistor can be connected to any available power-supply voltage within the permitted power-supply range, and there is no restriction on this voltage, based on the magnitude of the voltage that is supplied to VCC of the package. Submit Documentation Feedback Copyright © 2005–2008, Texas Instruments Incorporated Product Folder Link(s): LP2901-Q1 5 PACKAGE OPTION ADDENDUM www.ti.com 10-Dec-2020 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan (2) Lead finish/ Ball material MSL Peak Temp Op Temp (°C) Device Marking (3) (4/5) (6) LP2901IDRG4Q1 ACTIVE SOIC D 14 2500 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 LP2901IQ1 LP2901IDRQ1 ACTIVE SOIC D 14 2500 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 LP2901IQ1 (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may reference these types of products as "Pb-Free". RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption. Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of