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LM324D SOP-14 Quad Single-Supply Op-Amp IC (5-Pack)
LM324D SOP-14 Quad Single-Supply Op-Amp IC (5-Pack)
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LM324D SOP-14 Quad Single-Supply Operational Amplifier IC (5-Pack)
The LM324D is the surface-mount (SOP-14) version of the classic LM324 quad op-amp, containing four independent operational amplifiers in a single package. Its key advantage over most op-amps is true single-supply operation from 3V to 32V, with an input common-mode range that includes ground — making it ideal for single-supply sensor signal conditioning, comparator arrays, and active filter designs.
Key Specifications
| Parameter | Value |
|---|---|
| Part Number | LM324D |
| Package | SOP-14 (SMD) |
| Number of Amplifiers | 4 (quad) |
| Supply Voltage (Single) | 3V – 32V |
| Supply Voltage (Dual) | ±1.5V – ±16V |
| Input Common-Mode Range | GND to VCC−1.5V (includes ground) |
| Gain-Bandwidth Product | 1MHz |
| Slew Rate | 0.5V/μs |
| Input Bias Current | 45nA typical |
| Input Offset Voltage | 2mV typical |
| Output Sink Current | 10mA typical |
| Quantity | 5 pieces |
LM324D vs Common Op-Amp Alternatives
| Feature | LM324D (Quad) | LM358 (Dual) | TL072 (Dual) |
|---|---|---|---|
| Amplifiers per Package | 4 | 2 | 2 |
| Single Supply | Yes (3V–32V) | Yes (3V–32V) | Yes (4.5V–36V) |
| Input Includes GND | Yes | Yes | No |
| GBW | 1MHz | 1MHz | 3MHz |
| Slew Rate | 0.5V/μs | 0.3V/μs | 13V/μs |
| Best For | 4-channel signal conditioning | 2-channel, low power | Audio, high-Z sources |
Why Choose LM324D?
- 4 Op-Amps in One Package — Replaces four separate op-amps; reduces component count and PCB area
- True Single-Supply — Input common-mode range includes GND; no virtual ground needed for single-supply designs
- Wide Supply Range — 3V–32V covers 3.3V, 5V, 9V, 12V, and 24V systems
- SOP-14 SMD Package — Compact footprint for modern PCB designs
- Industry Standard — Pin-compatible with LM2902, MC3403, and all LM324 variants
Typical Applications
- 4-channel sensor signal conditioning (temperature, pressure, current, voltage)
- Quad voltage comparator array (window comparator, threshold detection)
- Active low-pass filter bank (4 independent filter channels)
- Summing amplifier for 4-channel audio mixer
- Instrumentation signal chain buffer and gain stage
- Single-supply integrator and differentiator circuits
FAQ
Q: Can LM324D replace LM324N (DIP-14)?
A: Yes — electrically identical, different package (SOP-14 SMD vs DIP-14 through-hole). Same pinout order.
Q: Why does LM324D output not swing to VCC?
A: LM324 has a PNP input stage; output swings to within ~1.5V of VCC (not rail-to-rail). For rail-to-rail output, use LMV324 or MCP6004.
Package Contents
- 5× LM324D SOP-14 Quad Op-Amp IC
