Overview

The LM2904 (commonly LM2904D in SOIC-8 or LM2904N in DIP-8) is an automotive-grade dual operational amplifier IC manufactured by STMicroelectronics, Texas Instruments, and ON Semiconductor. Designed and qualified according to AEC-Q100 standards, it operates across an extended automotive temperature range of −40∘C-40^\circ\text{C} to +125∘C+125^\circ\text{C}.

Sharing an identical pinout and internal architecture with the dual LM358 family, the LM2904 operates from single DC supplies of 3.0 V3.0\text{ V} to 26.0 V26.0\text{ V} (up to 32.0 V32.0\text{ V} for enhanced versions) with ground-sensing input capability, making it the preferred choice for automotive ECU sensor conditioning and industrial environments.

Quick reference

Op-Amp TypeAutomotive-Grade AEC-Q100 Dual Operational Amplifier
Package8-Pin DIP (Through-Hole) / SOIC-8 / TSSOP-8
Supply Voltage Range (VCCV_{CC})3.0 V3.0\text{ V} to 26.0 V26.0\text{ V} DC (±1.5 V\pm 1.5\text{ V} to ±13.0 V\pm 13.0\text{ V} dual supply)
Operating Temperature Range−40∘C-40^\circ\text{C} to +125∘C+125^\circ\text{C} (Full Automotive Grade)
Gain Bandwidth Product (GBW)1.1 MHz1.1\text{ MHz}
Slew Rate0.6 V/μs0.6\text{ V}/\mu\text{s}
Quiescent Supply Current0.7 mA0.7\text{ mA} typical

Pinout (Standard Dual Op-Amp 8-Pin Package)

text
        ┌──────────┐
  1OUT ─│ 1      8 │─ VCC
  1IN- ─│ 2      7 │─ 2OUT
  1IN+ ─│ 3      6 │─ 2IN-
   GND ─│ 4      5 │─ 2IN+
        └──────────┘
PinNameDescription
11OUTOperational Amplifier 1 output
21IN-Operational Amplifier 1 inverting input
31IN+Operational Amplifier 1 non-inverting input
4GND / V-Ground reference (0 V) or negative supply rail
52IN+Operational Amplifier 2 non-inverting input
62IN-Operational Amplifier 2 inverting input
72OUTOperational Amplifier 2 output
8VCC / V+Positive power supply rail (+3.0V to +26.0V DC)

Specifications

ParameterSymbolMinTypMaxUnitConditions
Supply Voltage RangeVCCV_{CC}3.05.0 / 12.026.0VOperational range
Input Offset VoltageVIOV_{IO}—2.07.0mVFull temperature range
Input Bias CurrentIIBI_{IB}—20100nAVCM=0VV_{CM} = 0\text{V}
Gain Bandwidth ProductGBWGBW—1.1—MHz
Slew RateSRSR—0.6—V/μs\text{V}/\mu\text{s}
Supply CurrentICCI_{CC}—0.71.2mABoth amplifiers (IO=0I_O = 0)

Common mistakes

  • Exceeding 26V on standard LM2904 versions: While standard LM358 handles 32V, standard LM2904 parts specify a 26.0 V26.0\text{ V} maximum operating limit. For 32V32\text{V} automotive systems, use the high-voltage LM2904A or LM2904B variants.
  • Ignoring upper output swing limitations: Output voltage swing on a 12V automotive supply is limited to ≈10.5 V\approx 10.5\text{ V} max (VCC−1.5VV_{CC} - 1.5\text{V}).

Notes

  • AEC-Q100 Automotive Qualification: Tested for high thermal cycling endurance and harsh automotive environments (under-hood ECUs, alternator noise rejection, 12V battery transients).

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