Brochage
Brochage Quadruple ampli-op LM324 (DIP-14)
Broches
- 1: OUT1
- 2: IN1− (inverting)
- 3: IN1+ (non-inverting)
- 4: V+ (VCC)
- 5: IN2+ (non-inverting)
- 6: IN2− (inverting)
- 7: OUT2
- 8: OUT3
- 9: IN3− (inverting)
- 10: IN3+ (non-inverting)
- 11: V− / GND
- 12: IN4+ (non-inverting)
- 13: IN4− (inverting)
- 14: OUT4
Caractéristiques
| Amplifiers | 4 per package, shared supply pins |
|---|---|
| Tension d'alimentation | 3–32 V single, or ±1.5–±16 V dual |
| Supply current | ≈ 0.7 mA typ for all four amps |
| Gain-bandwidth | ≈ 1 MHz |
| Vitesse de balayage | ≈ 0.5 V/µs |
| Input common-mode range | Includes ground (V−), up to VCC − 1.5 V |
| Output current | ≈ 30 mA source / 20 mA sink typ, short-circuit protected |
| Input offset voltage | ≈ 2 mV typ, 7 mV max |
| Operating temperature | LM324: 0–70 °C; LM2902: −40–125 °C |
| Boîtier | DIP-14, SOIC-14, TSSOP-14 |
Notes
- Same 4-amp layout as the dual LM358 above, just twice over: pin 4 is the one shared V+ for all four amps, pin 11 the one shared V−/GND — single-supply 3–32V, or dual-supply ±1.5–±16V.
- The input stage does not handle signals near the negative rail cleanly: as the input common-mode voltage crosses near 0V/V− on a single supply, there is a well-documented crossover-distortion/phase-reversal region. Bias the input away from the rail (a mid-supply divider, for instance) if a clean signal near ground matters — this, combined with a modest ~0.4–0.5V/µs slew rate and ~1MHz gain-bandwidth, is why the LM324 is a poor pick for anything needing precision near 0V on a single rail.
