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LM358P

Dual GP op-amp, 3-30V single supply, GND-sensing, 700kHz GBW, PDIP-8

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Manufacturer Part：

LM358P

Package：

PDIP-8 (9.81 x 6.35 x 4.57mm, 2.54mm pitch, through-hole)

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Description

Product Overview

The LM358P from Texas Instruments is a dual general-purpose operational amplifier operating from a single supply (3V to 30V), featuring ground-sensing common-mode input range, low supply current (500µA for both amps), and industry-standard PDIP-8 packaging.

Key Specifications

Number of Channels 2 (dual)
Supply Voltage Range 3V to 30V (single) or ±1.5V to ±15V (dual)
Input Offset Voltage 3mV typical, 7mV max @ 25°C
Input Bias Current 20nA typical, 250nA max
Input Offset Current 2nA typical, 50nA max
Common-Mode Input Range 0V to VCC-1.5V (includes ground)
Output Voltage Swing 0V to VCC-1.5V @ RL≥10kΩ
Open-Loop Gain 100V/mV (100dB) typical @ RL≥2kΩ
Gain-Bandwidth Product 700kHz (1.2MHz B-version)
Slew Rate 0.3V/µs (0.6V/µs B-version)
CMRR 80dB typical
Supply Current (both amps) 0.7mA typical, 1.2mA max @ VCC=5V
Output Sink Current 10mA typical @ VO=200mV
Output Source Current 20mA typical @ VO=2V
Operating Temperature 0°C to +70°C
Package PDIP-8 (9.81 x 6.35mm)

Features

  • Single-supply operation: 3V to 30V
  • Common-mode input range includes ground
  • Low supply current: 0.7mA for both amplifiers
  • 700kHz gain-bandwidth product
  • Internally frequency-compensated
  • Large DC voltage gain: 100dB
  • Wide power supply range: single or dual supply
  • Output short-circuit protection

Applications

  • Comparator and voltage reference circuits
  • Sensor signal conditioning
  • Battery-powered instrumentation
  • DC gain blocks and active filters
  • Current sensing and monitoring

The LM358P from Texas Instruments is a dual general-purpose operational amplifier that has been an industry workhorse for decades. Its key advantage is true single-supply operation from 3V to 30V, with a common-mode input range that includes ground (0V). This allows the LM358 to amplify signals near ground without a negative supply—critical for single-ended sensor interfaces. The total supply current is just 0.7mA for both amplifiers at 5V, making it suitable for battery-powered applications. The 700kHz gain-bandwidth and 0.3V/µs slew rate limit its use to DC and low-frequency applications (below ~50kHz at unity gain). The PNP input stage allows the input common-mode range to extend to ground, while the class-AB output stage can both source (20mA) and sink (10mA at 200mV) current. The P suffix denotes the PDIP-8 through-hole package. The LM358B is an improved version with 1.2MHz GBW, 300µA Iq, internal EMI filter, and 2mV offset.

The LM358P consists of two independent operational amplifiers, each using a PNP differential input stage that allows the common-mode input voltage to include ground. The PNP input transistors are biased so that when both inputs are at 0V, the transistors are still in the active region, and the amplifier functions normally. The output stage is a class-AB push-pull configuration that can actively pull the output high (source current) through a PNP transistor and pull low (sink current) through an NPN transistor. However, the sink capability is limited: at VO=200mV, the sink current is only 12µA typical, which can be problematic for driving low-impedance loads to ground. This is why the LM358 is often used with pull-down resistors to ensure the output can reach 0V. The internal compensation capacitor provides stability at unity gain without external components. When used as a comparator (open-loop), the output swings between approximately 0.7V (saturation voltage) and VCC-1.5V, which is sufficient for many digital logic interfaces with level shifting.

Pin Name Type Description
1 OUT A Output Amplifier A output
2 IN- A Input Amplifier A inverting input
3 IN+ A Input Amplifier A non-inverting input
4 GND / V- Power Ground or negative supply
5 IN+ B Input Amplifier B non-inverting input
6 IN- B Input Amplifier B inverting input
7 OUT B Output Amplifier B output
8 V+ Power Positive supply (3V to 30V)

LM358P uses the PDIP-8 package with the same dual op-amp pinout as LM358N: Pin 1 = Output A, Pin 2 = Inverting Input A (-), Pin 3 = Non-inverting Input A (+), Pin 4 = GND/VEE, Pin 5 = Non-inverting Input B (+), Pin 6 = Inverting Input B (-), Pin 7 = Output B, Pin 8 = VCC. The P suffix denotes TI plastic DIP package (equivalent to N suffix from other manufacturers). This device is pin-for-pin compatible with LM2904P, LM358AVP, and TLC27M2CP op-amps. The input common-mode voltage range includes ground, enabling true single-supply operation from 3V to 32V.

  • Sensor Amp: Single 5V supply, thermistor or LDR to IN+; IN- sets threshold; output drives MCU ADC or GPIO
  • Voltage Comparator: Open-loop; IN+ monitors battery voltage vs. IN- reference; output HIGH/LOW indicates threshold crossing
  • Current Sense:

    Shunt resistor voltage amplified by gain of 100; IN+ at shunt high side; output = 100 × Vshunt

  • Active Low-Pass: Sallen-Key filter at 1kHz cutoff; 700kHz GBW provides 57dB loop gain at 1kHz for accurate filter response
  • Window Comparator: Both amps used; one detects over-voltage, other under-voltage; outputs wire-ANDed for fault detection
Model Manufacturer Key Difference Package Specs
LM358AN TI Improved version with lower input offset voltage 2mV max vs 7mV for precision signal conditioning DIP-8 1.1MHz/0.6V/µs
LM358B TI Modern upgrade: 36V supply, 1.2MHz GBW, 3mV offset, and rail-to-rail output swing DIP-8 1.2MHz/36V
LM324N TI Quad op-amp version (4 channels) in DIP-14 for multi-stage signal chain applications DIP-14 1.1MHz/4-ch
LM2904N TI Automotive-grade -40 to +125C version with enhanced ESD protection for harsh environments DIP-8 1.1MHz/-40-125C
LMV358IDR TI Low-voltage 2.7-5.5V version with 1MHz GBW for 3.3V and battery-powered systems SOIC-8 1MHz/2.7-5.5V
NE5532P TI Dual low-noise audio op-amp with 10MHz GBW for audio preamp and filter applications DIP-8 10MHz/9V/µs

LM358 is the industry-standard dual general-purpose op-amp with 1.1MHz GBW and 3-32V single-supply operation. Input common-mode range includes ground for single-supply sensor interfacing. LM358B offers modern 36V rail-to-rail output. For quad needs, LM324 provides 4 channels. For audio, NE5532 offers 10MHz GBW and low noise. LM2904 extends temperature range to 125C for automotive applications.

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