Texas Instruments LMV358QDG4

Overview

LMV358QDG4 from Texas Instruments is a dual rail-to-rail output operational amplifier optimized for low-voltage (2.7 V to 5.5 V) single-supply operation, delivering 1 MHz unity-gain bandwidth, 1 V/μs slew rate, and 210 μA typical supply current per amplifier. It features rail-to-rail output swing, ground-sensing input common-mode range, and operates across –40°C to +125°C - enabling use in motor control feedback, portable media player audio stages, and HVAC sensor signal conditioning.

For engineers reviewing the LMV358QDG4 datasheet, LMV358QDG4 pinout, LMV358QDG4 application, or LMV358QDG4 equivalent, key selection criteria include its dual-channel configuration in VSSOP-8 package, guaranteed rail-to-rail output drive into 10 kΩ loads, low input offset voltage (7 mV typ), and compatibility with space-constrained industrial and consumer designs requiring stable 2.7–5.5 V operation.

Technical Context

The LMV358QDG4 implements a CMOS input stage with complementary bipolar output transistors, enabling rail-to-rail output swing while maintaining low input bias current (250 nA max) and wide common-mode input range (–0.2 V to VCC – 0.2 V). Its internal compensation ensures unity-gain stability with capacitive loads up to 100 pF.

It operates as a true single-supply op amp: inputs accept signals down to ground, outputs swing within 60 mV of rails at 10 kΩ load (VCC = 5 V), and exhibits no crossover distortion due to Class AB output stage design. The device shares architecture and electrical specs with the LMV321 (single), LMV324 (quad), and LMV324S (quad with shutdown), but excludes shutdown functionality.

Key Specifications

Pinout & Package

LMV358QDG4 is housed in an 8-pin VSSOP (DGK) package measuring 3.00 mm × 3.00 mm, with 0.65 mm lead pitch and exposed thermal pad for enhanced power dissipation in compact layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual low-voltage rail-to-rail op amp applications.

Compared with LMV358IDR, LMV358QDG4 saves 63% board area in VSSOP-8 but has higher thermal resistance (172°C/W vs 97°C/W in SOIC); compared with TLV2372IDR, it trades 10× higher supply current for guaranteed 1-MHz bandwidth at 2.7 V and pin-compatible replacement capability.

Availability

LMV358QDG4 is available at Aetrix Electronics and suitable for motor control feedback, portable audio signal conditioning, and HVAC temperature sensing requiring stable component supply across automotive-grade temperature ranges and long production lifecycles.

Supply support for LMV358QDG4 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 company specializing in analog and embedded processing technologies, with leadership in precision op amps, power management ICs, and signal chain solutions.

The LMV3xx product line was designed for cost-sensitive, space-constrained applications operating from 2.7 V to 5.5 V - targeting portable electronics, industrial sensors, and automotive subsystems where rail-to-rail output and ground-sensing inputs are essential.

FAQ

What is the maximum capacitive load the LMV358QDG4 can drive without instability?

The LMV358QDG4 remains unity-gain stable with capacitive loads up to 100 pF when driving a 10 kΩ resistive load, as verified in TI's SLOS263W datasheet Figure 6. For loads exceeding 100 pF, external series resistance (≥100 Ω) at the output is recommended to maintain phase margin above 60° and prevent ringing in step responses. This behavior is consistent across both amplifiers in the LMV358QDG4 package.

Does the LMV358QDG4 support true single-supply operation with input signals at ground potential?

Yes, the LMV358QDG4 supports true single-supply operation with input common-mode voltage range extending to –0.2 V (below ground) and up to VCC – 0.2 V. This allows direct interfacing with ground-referenced sensors such as current shunts or thermocouples without level-shifting circuitry. Both amplifiers in the LMV358QDG4 exhibit identical input range specifications per the datasheet Section 7.5.

What is the thermal resistance (RθJA) of the LMV358QDG4 in its VSSOP-8 package?

The LMV358QDG4 in the DGK (VSSOP-8) package has a junction-to-ambient thermal resistance (RθJA) of 172°C/W, as specified in Table 7.4 of the SLOS263W datasheet. This value assumes standard JEDEC 2-layer board conditions; actual thermal performance improves with copper pour and thermal vias under the exposed pad.

Is the LMV358QDG4 pin-compatible with other dual op amps in the LMV3xx family?

Yes, the LMV358QDG4 shares identical pinout with LMV358IDR (SOIC-8) and LMV358MM (VSSOP-8), as confirmed in the "Pin Configuration and Functions" section (Page 6) of the SLOS263W datasheet. All LMV358 variants use Pin 1 = OUT A, Pin 2 = IN– A, Pin 3 = IN+ A, Pin 4 = GND, Pin 5 = IN+ B, Pin 6 = IN– B, Pin 7 = OUT B, Pin 8 = VCC+, with no functional differences between QDG4, IDR, or MM suffixes beyond packaging and temperature grading.

What is the typical input offset voltage drift over temperature for the LMV358QDG4?

The LMV358QDG4 has an average temperature coefficient of input offset voltage (αVIO) of 5 μV/°C, as specified in Section 7.5 of the SLOS263W datasheet. Over the full –40°C to +125°C operating range, this results in a maximum additional offset drift of ±825 μV beyond the initial 7 mV typical room-temperature offset - critical for DC-coupled precision applications requiring <10 mV total error budget.