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MC1458DR

Dual general-purpose op amp, μA741 equivalent per channel, ±15V, 8-SOIC

7988

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جزء الشركة المصنعة ： جزء الشركة المصنعة

MC1458DR

الحزمة ： الحزمة

8-Pin SOIC (4.9 x 3.9 x 1.5 mm)

الوصف

نظرة عامة على المنتج

The MC1458DR is an onsemi/TI dual general-purpose bipolar operational amplifier with each half electrically similar to the uA741. It features 1MHz GBW, 0.5V/us slew rate, +/-12V common-mode range, internal frequency compensation, and short-circuit protection. Packaged in 8-SOIC, 0C to +70C.

المواصفات الرئيسية

القنوات	2
GBW	1 MHz
معدل الدوران	0.5 V/us
Vos (max)	6 mV
Ib (max)	500 نيوتن أمبير
نطاق العرض	+/-5V to +/-15V
Supply Current	3.4 mA typ (both)
Output Swing	+/-12V min (RL=10k)
CMRRR	90 dB typ
الحزمة	8-SOIC

الميزات

Dual op amp, each half similar to uA741
Internal frequency compensation (no external caps)
Short-circuit protected outputs
Wide common-mode and differential voltage range
No latch-up
Low power consumption
120 dB crosstalk attenuation between channels

التطبيقات

Audio preamplifiers and mixers
Instrumentation and signal conditioning
Active filters and integrators
Control systems and servo loops

مقدمة المنتج:MC1458DR مقدمة المنتج

The MC1458DR is an onsemi dual general-purpose operational amplifier in an 8-SOIC package, providing two independent op-amp channels with electrical characteristics equivalent to the industry-standard μA741. Each channel features a 1 MHz gain-bandwidth product and 0.5 V/μs slew rate, suitable for a wide range of analog signal conditioning applications. The device operates from dual supplies up to ±15V with internal frequency compensation, requiring no external components for stability in unity-gain configurations. The output stage provides short-circuit protection, limiting output current to approximately ±25 mA under fault conditions. The MC1458DR is pin-compatible with the LM1458, LM1558, and other industry-standard dual op-amps, enabling easy substitution in existing designs.

مبدأ العمل:MC1458DR مبدأ العمل

The MC1458DR operates as two independent high-gain voltage amplifiers with internal frequency compensation. Each channel compares the voltage difference between its inverting and non-inverting inputs, amplifying this differential signal by the open-loop gain (typically 100 dB). The internal compensation capacitor (typically 30 pF) ensures stability in unity-gain configurations without requiring external compensation components. The input stage uses a differential pair with constant-current tail bias, providing high common-mode rejection (90 dB typical). The output stage is a Class-AB push-pull configuration with short-circuit current limiting to approximately ±25 mA, protecting against output overload conditions.

وصف الدبوس:MC1458DR تعريف الدبوس ووظائفه

دبوس	Mnemonic	الوصف
1	1حول	Channel 1 Output
2	1في-	Channel 1 Inverting Input
3	1في+	Channel 1 Non-inverting Input
4	V-	Negative Supply Voltage
5	2في+	Channel 2 Non-inverting Input
6	2في-	Channel 2 Inverting Input
7	2سابقًا	Channel 2 Output
8	V+	Positive Supply Voltage

Application Scenarios:In which products and applications isMC1458DR مستعمل

Active filter circuits in audio and instrumentation systems requiring dual op-amp channels
Signal conditioning for sensor interfaces in industrial control with ±15V supply
Summing amplifiers and integrators in analog computing with internal compensation
Buffer amplifiers for impedance matching in data acquisition systems
Oscillator circuits for signal generation in test and measurement equipment

Alternative Models:What chips are recommended as replacements for MC1458DR

الطراز	الشركة المصنعة	الفرق الرئيسي
LM358DR	TI	Dual, single-supply, low cost
TL072CDR	TI	Dual JFET input, lower Ib, 3 MHz GBW
NE5532DR	أونسمي	Dual, low noise, audio-optimized
RC4558DR	TI	Dual, pin-compatible, 3 MHz GBW