LM321A
Every spec below is cited to the manufacturer datasheet. Compare the closest alternatives, then ask the assistant what it means for your design.
What the LM321A does
The LM321A/358A/324A series are 36V general purpose operational amplifiers available in single, dual, and quad configurations across commercial, industrial, and military temperature ranges. These devices feature a 0.9 MHz bandwidth, 0.5V/μs slew rate, and a maximum offset voltage of ±3mV while drawing only 100μA per channel. The input common-mode voltage range includes ground, and the outputs swing rail-to-rail. Engineers typically use these amplifiers in power modules, sensor interfaces, motor control circuits, and audio applications where low power consumption and stable frequency response are required.
Datasheet parameters
| Parameter | Min | Typ | Max | Conditions | Source |
|---|---|---|---|---|---|
| quiescent current | — | 110 µA | 200 µA | VS = 30V; iq; Power Supply | 3peak datasheet, p. 5 — Electrical Characteristics |
| output voltage | — | 5 mV | 10 mV | VS = 5V, RLOAD = 10kΩ to 0V; Output Characteristics | 3peak datasheet, p. 5 — Electrical Characteristics |
| output current | 25 mA | 30 mA | — | isc; Output Characteristics | 3peak datasheet, p. 5 — Electrical Characteristics |
| supply voltage range | 3 V | — | 36 V | vs; Power Supply | 3peak datasheet, p. 5 — Electrical Characteristics |
| input offset voltage drift | — | 7 µV/°C | — | Operating Range; vostc; Input Characteristics | 3peak datasheet, p. 5 — Electrical Characteristics |
| input offset voltage | -3 mV | 100 µV | 3 mV | VS = 30V, VCM = 0V to 28V; vos; Input Characteristics | 3peak datasheet, p. 5 — Electrical Characteristics |
| gain bandwidth | 900 kHz | — | — | gbw; AC Specifications | 3peak datasheet, p. 6 — 36V General Purpose Op Amps |
| cmrr | 75 dB | 120 dB | — | VCM = 0V to 28V; cmrr; Input Characteristics | 3peak datasheet, p. 5 — Electrical Characteristics |
| operating temperature (abs max) | -40 °C | — | 125 °C | Absolute Maximum Ratings Note 1 | 3peak datasheet, p. 4 — Absolute Maximum Ratings Note 1 |
| input offset current | — | 60 pA | — | ios; Input Characteristics | 3peak datasheet, p. 5 — Electrical Characteristics |
| input bias current | — | 60 pA | — | ib; Input Characteristics | 3peak datasheet, p. 5 — Electrical Characteristics |
| input capacitance | — | 5 pF | — | Differential Mode; cin; Input Characteristics | 3peak datasheet, p. 5 — Electrical Characteristics |
| slew rate | 0.5 V/µs | — | — | G = 1, 2V step; AC Specifications | 3peak datasheet, p. 6 — 36V General Purpose Op Amps |
| psrr | 85 dB | 120 dB | — | VS = 5V to 36V; psrr; Power Supply | 3peak datasheet, p. 5 — Electrical Characteristics |
| input voltage noise density | 70 nV/√Hz | — | — | f = 1kHz; en; Noise Performance | 3peak datasheet, p. 6 — 36V General Purpose Op Amps |
| response time | — | 4 µs | — | 3peak datasheet, p. 6 — 36V General Purpose Op Amps | |
| channel count | — | 1 | — | 3peak datasheet, p. 1 |
Closest matches to LM321A
Frequently asked questions
What is the channel count of the LM321A?
The channel count is 1.
What is the CMRR under the condition VCM = 0V to 28V?
The CMRR is 120 dB.
What is the gain bandwidth product of the LM321A under AC Specifications?
The gain bandwidth product is 900 kHz.
What is the input bias current (ib) specified in the Input Characteristics for the LM321A?
The input bias current (ib) is 60 pA.
What is the input capacitance (cin) under Differential Mode conditions?
The input capacitance (cin) under Differential Mode conditions is 5 pF.
What is the input offset current (ios) for the LM321A under Input Characteristics?
The input offset current (ios) is 60 pA.
What is the input offset voltage (vos) when VS = 30V and VCM = 0V to 28V?
The input offset voltage is 100 µV.
What is the input offset voltage drift (vostc) for the LM321A within the Operating Range?
The input offset voltage drift is 7 µV/°C.
What is the input voltage noise density of the LM321A at f = 1kHz under Noise Performance conditions?
The input voltage noise density is 70 nV/√Hz.
What is the operating temperature specified in the Absolute Maximum Ratings Note 1?
The operating temperature is 125 °C.
What is the output current (isc) under Output Characteristics?
The output current (isc) under Output Characteristics is 30 mA.
What is the output voltage when VS = 5V, RLOAD = 10kΩ to 0V?
The output voltage is 5 mV.