LM358PE3 - Dual 700 kHz Op Amp in 8-PDIP | Texas Instruments
MPN： LM358PE3 ✓ 啟用中LM358PE3 概覽
An operational amplifier is a high-gain differential-input semiconductor that compares two voltages and drives its output to amplify the difference between them. In the broader hierarchy, the LM358 is a dual operational amplifier, a general-purpose analog amplifier within the amplifier-IC and semiconductor categories. Its two independent channels can implement noninverting, inverting, summing, comparator, and feedback-control functions.
The principal characteristics of the LM358PE3 are its 700 kHz gain-bandwidth product, 0.3 V/µs slew rate, low supply-current draw, high voltage capability and single-supply operation. The manufacturer describes the LM358 family as suitable for general-purpose signal conditioning when the circuit does not require rail-to-rail input or output swing. Its broad supply-voltage range permits use in 3 V, 5 V, 12 V and higher-rail systems when the individual channel remains within its operating limits.
Each amplifier includes high gain and frequency compensation, allowing closed-loop operation without external compensation in many standard gain configurations. The 0.7 MHz bandwidth supports low-frequency signal paths more effectively than high-speed precision amplifiers, while the 0.3 V/µs slew rate limits large-signal response. Input offset voltage, input bias current, output-current capability and common-mode limits must be checked against the manufacturer datasheet for the chosen operating conditions.
Typical applications include bridge and resistive sensor amplification, audio preamplification, low-frequency active filters, motor and actuator control loops, battery-powered monitoring, and general industrial signal conditioning. Two independent channels can process separate sensor signals or form the two halves of an instrumentation circuit, although common-mode and output-swing restrictions still apply.
For reliable PCB implementation, preserve the manufacturer's recommended bypass capacitance, provide a low-impedance ground return, and keep feedback components close to the relevant amplifier pins. A socketed PDIP design is convenient for prototyping and repair, although a soldered package provides better mechanical reliability in production.
This product page combines the LM358PE3's principal electrical characteristics with pin-level implementation guidance, application fit, drop-in alternatives and a side-by-side engineering comparison. These practical details help designers move from general amplifier selection to a reviewable circuit design.
直接替換替代品，適用於 LM358PE3 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： LM358PE3 （相同外形與佔位） — 差異在於 Product Type, Package, Mounting Type, Amplifier Count, Amplifier Type.
LM358PT
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →LM2904P
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →LM2904P3
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →LM2904DR
✅ 直接替換聯絡詢價
查看資料表 →RC4558
✅ 直接替換📋 參考替代品（不在目錄中）
LM358PE3 最大額定值與電氣特性
| Amplifier Count | 2 independent channels |
| Product Type | Dual general-purpose operational amplifier |
| Supply Voltage Range | 3 V to 32 V |
| Gain-Bandwidth Product | 700 kHz |
| Slew Rate | 0.3 V/µs |
| 供應電流 | 0.7 mA typical |
| 封裝 | 8-PDIP |
| Package Pin Count | 8 pins |
| Mounting Technology | Through-hole |
| RoHS 狀態 | Unknown |
| REACH Status | Unknown |
| Automotive Qualification | Not specified |
LM358PE3 腳位配置
| 腳位 1 | OUT1 — Channel 1 output |
| 腳位 2 | IN1- — Channel 1 inverting input |
| 腳位 3 | IN1+ — Channel 1 non-inverting input |
| 腳位 4 | GND — Ground connection |
| 腳位 5 | IN2+ — Channel 2 non-inverting input |
| 腳位 6 | IN2- — Channel 2 inverting input |
| 腳位 7 | OUT2 — Channel 2 output |
| 腳位 8 | V+ — Positive supply connection |
典型應用
LM358PE3 適用於 6 應用s: Low-Voltage Sensor Signal Conditioning, Audio Preamplification, Industrial Feedback Control, Battery-Powered Monitoring, Peak and Envelope Detection, Active Filtering and Waveform Conditioning.
Low-Voltage Sensor Signal Conditioning
The LM358PE3 fits sensor-amplifier stages that operate from a 3 V to 32 V supply and require two independent analog channels. Its 700 kHz gain-bandwidth product is appropriate for resistive, bridge, and slow-changing sensor signals, while the 0.3 V/µs slew rate supports useful low-frequency dynamic response. Place the device close to the sensor input, keep high-impedance paths short, and use the two channels for either two sensors or a differential conditioning topology. Confirm that the sensor output remains inside the amplifier's common-mode input range at the selected supply voltage. The dual configuration can reduce the number of separate amplifier packages while retaining independent bias currents and outputs.
Audio Preamplification
The LM358PE3 can provide moderate-bandwidth voltage amplification for microphone, line-level, or control-audio stages. Its 700 kHz gain-bandwidth product covers a substantial portion of the audio band, and the 0.3 V/µs slew rate is adequate for many low-amplitude, non-high-fidelity designs. The two channels may handle left and right signals or audio plus a monitor/control signal. Because the device is not rail-to-rail by specification, the input and output operating points must remain within its documented limits. Input and output coupling capacitors should be selected from the required low-frequency response, and the circuit should avoid excessive gain that would reach the device's slew-rate limit.
Industrial Feedback Control
The LM358PE3 is suitable for industrial actuator and feedback-control loops that need a stable, broadly available dual amplifier at low or moderate signal bandwidth. The 3 V to 32 V operating range permits use in multiple control rails, while approximately 0.7 mA typical supply-current draw supports power-conscious designs. One channel can amplify the error signal and the other can drive or buffer a feedback path. With a 700 kHz gain-bandwidth product and 0.3 V/µs slew rate, compensation must account for the forward-path gain and the feedback network. Verify output-current demand, load capacitance, common-mode range and stability before selecting compensation components.
Battery-Powered Monitoring
The LM358PE3 fits battery-powered voltage, current, and environmental monitoring circuits where low power and flexible supply voltage are important. The manufacturer's family information identifies low supply-current drain and operation from 3 V upward, making the device useful for compact single-supply systems. Its two channels can monitor two sensed quantities or implement a difference amplifier. For battery designs, compare the actual quiescent current over temperature, input bias current effects, and leakage through external resistors. A common-mode input requirement or output-swing limit can require a mid-supply reference. Place the amplifier close to the sensor interface and bypass the supply rail to prevent long PCB traces from adding noise or transient susceptibility.
Peak and Envelope Detection
The LM358PE3 can be used in peak-detector and envelope-detection circuits that hold the maximum of a low-frequency waveform. The two independent channels allow a gain or buffer stage to be combined with an active hold stage, while the 700 kHz gain-bandwidth product supports signals well beyond many slow sensor envelopes. The 0.3 V/µs slew rate determines how quickly the output can follow rapid excursions. Practical performance depends on the diode orientation, capacitor leakage, resistor bias current, and required hold time. Select a low-leakage hold capacitor and confirm recovery behavior after a large input step. If the detector must preserve narrow peaks, the system bandwidth should be checked against the target pulse duration.
Active Filtering and Waveform Conditioning
The LM358PE3 can implement active low-pass, high-pass, and general-purpose filter sections where a passive RC network alone cannot provide adequate gain or loading performance. Its 700 kHz gain-bandwidth product is suitable for low-frequency audio, control, and instrumentation signals, while the 0.3 V/µs slew rate helps preserve larger waveform edges. Two independent channels make cascaded sections practical in a single package. Component tolerances and the amplifier's finite open-loop gain can shift cutoff frequency and phase, so simulate the complete closed-loop network and allow for input-offset and bias-current errors. Keep feedback resistors and capacitors close to the relevant pins and route the ground return directly to the device ground pin.
工程參考資料，適用於 LM358PE3 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | LM358P | LM2904P | LM2904P3 | LM2904 | RC4558 |
|---|---|---|---|---|---|---|
| Package | 8-PDIP | 8-PDIP | 8-PDIP | 8-PDIP | 8-PDIP | 8-PDIP |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | ROHM Semiconductor |
| Amplifier Count | 2 | 2 | 2 | 2 | 2 | 2 |
主要差異化特點
- Higher documented maximum supply voltage within the dual-amplifier family (對比LM2904P3)
- Single-package dual-channel implementation (對比RC4558)
- Purpose-built general-purpose amplification performance (對比LM358P)
設計說明
Place the input, output and feedback components close to the LM358PE3 pins, and route the two channels so their high-impedance inputs do not run beside unrelated switching or digital-return currents. Keep the ground connection on pin 4 short and provide a low-impedance return path. Although the through-hole package is forgiving in a prototype, a stable reference plane still reduces ground-dependent offset and improves repeatability.
Decouple the positive supply near pin 8 according to the manufacturer datasheet and place the capacitor on the same side of the board as the device. Estimated power dissipation is PD = (VIN - VOUT) × IOUT plus internal overhead; for example, 5 V input, 3.3 V output and 10 mA load gives an estimated 17 mW before internal losses. Recalculate this estimate using the actual operating point.
Do not assume rail-to-rail operation or unlimited output swing. Verify that both inputs and the output remain inside the manufacturer's specified common-mode and output limits at the actual supply voltage. Also avoid selecting a gain that pushes the 0.3 V/µs slew-rate limit at the required signal amplitude, particularly in audio, actuator-drive and active-filter applications.
For low-level sensor signals, check source impedance against bias-current effects and use the 700 kHz gain-bandwidth product to calculate closed-loop bandwidth at the intended gain. Higher closed-loop gain reduces usable bandwidth and phase margin. Stable feedback components, short input traces and a clean reference plane are especially important when the source resistance is high or the input signal is slow but small.
合規資訊
No specific RoHS, REACH, lead-free, halogen-free or conflict-minerals declaration was identified for LM358PE3. AEC-Q100 qualification is not specified for the LM358PE3 ordering code.
