Texas Instruments LPV324IDE4

Overview

LPV324IDE4 from Texas Instruments is a quad, rail-to-rail output, low-voltage (2.7 V to 5 V), low-power (28 μA typical at 5 V) operational amplifier optimized for space-constrained, battery-powered applications requiring wide input common-mode range (−0.2 V to V_CC+ − 0.8 V) and stable operation with 1000 pF capacitive loads. It delivers 152 kHz gain-bandwidth product and operates across −40°C to 125°C.

For engineers reviewing the LPV324IDE4 datasheet, LPV324IDE4 pinout, LPV324IDE4 application, or LPV324IDE4 equivalent, key selection criteria include its 28 μA supply current per device (all four channels), rail-to-rail output swing (V_CC+ − 3.5 mV / V_CC− + 90 mV at 100 kΩ), −40°C to 125°C extended temperature rating, SOIC-14 package, and compatibility with low-voltage sensor signal conditioning and portable active filter designs.

Technical Context

The LPV324IDE4 implements a CMOS input stage with rail-to-rail output stage, enabling full-swing operation into high-impedance loads while maintaining low input bias current (2 nA typical at 25°C). Its internal biasing supports stable unity-gain operation and exhibits no crossover distortion.

It features a specified input common-mode voltage range extending 0.2 V below ground and up to 0.8 V below V_CC+, allowing direct interfacing with single-supply microcontrollers and ADCs. The device achieves 71° phase margin with 22 pF load and remains stable with up to 1000 pF capacitive loading-critical for driving long traces or piezoelectric transducers.

Key Specifications

Pinout & Package

LPV324IDE4 is housed in a 14-pin SOIC (D) package with standard 1.27 mm pitch, 8.65 mm × 3.91 mm body, and RoHS-compliant CU NIPDAU lead finish (MSL Level-1).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-voltage, low-power op-amp applications.

Compared with LPV324DR and MCP6004-E/SL, LPV324IDE4 uniquely combines 125°C operation, 28 μA total quiescent current, and 2 kV HBM ESD protection in a legacy-compatible SOIC-14 package-making it optimal for automotive and industrial edge nodes where thermal resilience and ultra-low power coexist.

Availability

LPV324IDE4 is available at Aetrix Electronics and suitable for portable medical sensors, automotive cabin control systems, and industrial process monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LPV324IDE4 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader delivering analog, embedded processing, and connectivity solutions with deep expertise in low-power design and automotive qualification.

The LPV324IDE4 belongs to TI's LPV3xx family of ultra-low-power, rail-to-rail op-amps engineered specifically for battery-powered and thermally demanding applications where supply voltage headroom and energy efficiency are critical constraints.

FAQ

What is the maximum operating temperature for LPV324IDE4?

The LPV324IDE4 is characterized for continuous operation from −40°C to +125°C. This extended temperature range is confirmed in the official Texas Instruments SLOS433I datasheet and applies to all electrical specifications unless otherwise noted. The device uses the same silicon die as the LPV324I grade, and the "E4" suffix denotes the green, RoHS-compliant SOIC packaging with CU NIPDAU finish. LPV324IDE4 maintains full rail-to-rail output swing and 152 kHz gain-bandwidth performance across this full range.

Does LPV324IDE4 support rail-to-rail input?

No, LPV324IDE4 does not support rail-to-rail input. Its input common-mode voltage range is specified as −0.2 V to V_CC+ − 0.8 V, meaning it accepts inputs 0.2 V below ground and up to 0.8 V below the positive supply. While this exceeds standard op-amp input ranges and enables ground-referenced signal handling, true rail-to-rail input would require operation down to V_CC− and up to V_CC+. LPV324IDE4's input stage is CMOS-based and optimized for low bias current-not full rail compliance. For rail-to-rail input capability, consider TI's TLV9004 or similar families.

What is the typical supply current for LPV324IDE4 at 3.3 V?

At 3.3 V supply and 25°C, the typical supply current for LPV324IDE4 is 24 μA for all four amplifiers combined. This value is interpolated from the datasheet's Figure 1 (Supply Current vs. Supply Voltage), which shows 25 μA at 3.3 V for the LPV324 (all channels) curve at TA = 25°C. The 28 μA figure cited elsewhere is the typical value at 5 V. The device's current draw scales sublinearly with supply voltage, making LPV324IDE4 especially efficient in 3.3 V systems such as ARM Cortex-M based sensor nodes.

Can LPV324IDE4 drive a 10 kΩ load with rail-to-rail output swing?

Yes, LPV324IDE4 can drive a 10 kΩ load with rail-to-rail output swing, though with reduced voltage margins versus the 100 kΩ specification. Per Figure 7 in the SLOS433I datasheet, at V_CC+ = 5 V and R_L = 10 kΩ, the positive swing reaches within ~15 mV of V_CC+ and the negative swing within ~60 mV of V_CC−. This remains functionally rail-to-rail for most 12-bit ADC interfaces. For guaranteed 3.5 mV / 90 mV margins, use ≥100 kΩ loads. The device's output stage is designed to maintain stability and linearity across this full load range.

Is LPV324IDE4 pin-compatible with other LPV324 variants?

Yes, LPV324IDE4 is fully pin-compatible with all other LPV324 variants in the SOIC-14 (D) package, including LPV324D, LPV324DR, LPV324ID, and LPV324IDR. All share identical pinout, footprint, and thermal pad configuration. The "I" denotes the −40°C to 125°C temperature grade, and "E4" indicates the green, RoHS-compliant packaging variant. No PCB redesign is required when upgrading from LPV324D to LPV324IDE4-only qualification for extended temperature operation and reflow profile validation per MSL Level-1 requirements.