BETAElectrical test rails±15 V · split supply
Dual general-purpose operational amplifier
LM1458 Specifications
Review LM1458 electrical specifications, operating conditions and package details.
Package view
Key specifications
Both channels share their power supply but have independent feedback. This is a conventional bipolar op amp: allow input and output headroom, and account for bias-current error.
Independent amplifiers2 Internally compensated
LM1458 ambient0–70 °C
Typical input offset1 mV · 25°C
Package details
LM1458N/NOPB · PDIP-8
| Property | Details |
|---|---|
| Manufacturer | Texas Instruments |
| Part number | LM1458N/NOPB |
| Package | PDIP-8 |
| Connections | 8 pins |
| Mounting | Through-hole |
| Lead pitch | 2.54 mm |
| Package code | dip |
| Thermal reference | Board and package dependent; see manufacturer data |
Operating conditions and stress limits
LM1458 commercial grade
Manufacturer specifications 7 parameters
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| Parameter | Value | Conditions / notes |
|---|---|---|
| Specified ambient range | 0 to +70°C | LM1458, not LM1558 |
| Electrical-characterization supply | ±15 V | The example follows this test condition |
| Absolute maximum supply | ±18 V | Stress limit, not an operating recommendation |
| Absolute differential input | ±30 V | Respect input and supply conditions |
| Absolute input voltage | ±15 V | At lower supply voltages, do not exceed either supply rail |
| Maximum junction temperature | 100°C | LM1458 rating |
| PDIP power dissipation limit | 400 mW | Derate using the manufacturer guidance and actual mounting |
No specifications match. Try a parameter name or a unit.
This legacy document does not provide a separate recommended minimum supply. No unverified low-voltage range is inferred.
Input accuracy and bias current
±15 V · 25°C unless stated
Manufacturer specifications 5 parameters
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| Parameter | Value | Conditions / notes |
|---|---|---|
| Input offset voltage | 1 mV typical; 6 mV maximum | RS ≤10 kΩ; 7.5 mV maximum over temperature |
| Input offset current | 80 nA typical; 200 nA maximum | 300 nA maximum over temperature |
| Input bias current | 200 nA typical; 500 nA maximum | 0.8 µA maximum over temperature |
| Input resistance | 0.3 MΩ minimum; 1 MΩ typical | 25°C characterization |
| Total supply current | 3 mA typical; 5.6 mA maximum | Both amplifiers; ±15 V; 25°C |
No specifications match. Try a parameter name or a unit.
Choose source and feedback resistances with input-current error in mind.
Gain, common mode and output swing
±15 V rails; respect load conditions
Manufacturer specifications 6 parameters
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| Parameter | Value | Conditions / notes |
|---|---|---|
| Large-signal open-loop gain at 25°C | 20 V/mV minimum; 160 V/mV typical | VO=±10 V; RL≥2 kΩ |
| Open-loop gain over temperature | 15 V/mV minimum | Same output and load condition |
| Input common-mode range | ±12 V minimum | Within ±15 V rails |
| Output swing at RL≥10 kΩ | ±12 V minimum; ±14 V typical | Light-load swing |
| Output swing at RL≥2 kΩ | ±10 V minimum; ±13 V typical | Heavier loading reduces headroom |
| Example output range | 1.50 V and 0.50 V nominal | Light DC loads; well inside the specified swing |
No specifications match. Try a parameter name or a unit.
Typical output headroom is not a guaranteed limit.
Rejection, stability and practical limits
Use the source document’s actual guarantees
Manufacturer specifications 7 parameters
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| Parameter | Value | Conditions / notes |
|---|---|---|
| Common-mode rejection | 70 dB minimum; 90 dB typical | RS≤10 kΩ |
| Supply-voltage rejection | 77 dB minimum; 96 dB typical | RS≤10 kΩ |
| Frequency compensation | Internal | No external compensation required |
| Supply bypass | 100 nF from each rail to 0 V | Local bypass; add bulk decoupling as needed |
| PDIP junction-to-ambient estimate | 187°C/W | Manufacturer package estimate; mounting dependent |
| Short-circuit protection | Included | Check dissipation; do not use a short as a normal load |
| Bandwidth, slew rate and noise | No numeric claim on this page | Not specified in the selected manufacturer electrical table |
No specifications match. Try a parameter name or a unit.
The 0 V signal midpoint is distinct from the negative supply pin.
Two-channel amplifier example
±15 V rails · 0 V signal reference
Manufacturer specifications 7 parameters
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| Parameter | Value | Conditions / notes |
|---|---|---|
| Input VIN | 0.50 V | Pins 3 and 5; common signal ground |
| Channel A feedback | 20 kΩ | OUT1 pin 1 to IN1− pin 2 |
| Channel A ground resistor | 10 kΩ | IN1− pin 2 to 0 V |
| Channel A ideal output | 1.50 V | 0.50 × (1 + 20 / 10) |
| Channel B feedback | Direct connection | OUT2 pin 7 to IN2− pin 6 |
| Channel B ideal output | 0.50 V | Unity-gain follower |
| Bypass capacitors | 100 nF per rail | Each supply rail to the 0 V midpoint |
No specifications match. Try a parameter name or a unit.
The 0 V reference is not the negative supply pin. Keep both rail-bypass loops short.
Physical pin reference
LM1458N/NOPB · PDIP-8
Manufacturer specifications 5 parameters
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| Parameter | Value | Conditions / notes |
|---|---|---|
| Lead pitch | 2.54 mm | Through-hole |
| Channel A | OUT1 1; IN1− 2; IN1+ 3 | Independent feedback loop |
| Channel B | IN2+ 5; IN2− 6; OUT2 7 | Independent feedback loop |
| Supply | V− 4; V+ 8 | Shared by both channels |
| Package orientation | Top view; pin 1 at the marker | Counterclockwise numbering |
No specifications match. Try a parameter name or a unit.
This dual-amplifier pinout differs from single amplifiers such as TL081 or LM741.
Connections by function
Select a pin for its function, connection guidance and electrical notes.