MC3303PG - Quad 1 MHz Operational Amplifier | onsemi | 14-PDIP
MPN： MC3303PG ✗ 停產MC3303PG 概覽
An operational amplifier is an analog building block that compares two input voltages and amplifies their difference. The quad MC3303PG contains four amplifier sections in one package, allowing a circuit to perform multiple amplification, buffering, summing, or comparison functions while reducing board area. MC3303PG belongs to the operational-amplifier hierarchy within analog ICs and integrated circuits, and its true differential input architecture supports accurate sensing of small signals referenced to either ground or another bias point.
The principal features include four amplifier channels, a 1 MHz gain-bandwidth product, operation from a single positive supply, Class AB output stages, true differential inputs, and low input bias current. Internal frequency compensation removes the need for external compensation networks in unity-gain applications. These characteristics make the MC3303PG practical for general-purpose designs where simplicity, tolerance of a wide supply range, and moderate operating bandwidth are more important than rail-to-rail output swing or very low offset voltage.
MC3303PG is electrically similar to the widely used MC1741C-family architecture but adds advantages for single-supply operation. True differential inputs allow the amplifier to operate without artificial ground bias around the input signal. The four-channel arrangement supports signal amplifiers, active filters, transducers, sensor interfaces, audio preamplification, and industrial control modules. A wide 3 V to 36 V operating range also permits operation from both compact low-voltage systems and higher industrial supply rails.
Typical uses include low-frequency sensor conditioning, audio input stages, active-filter sections, comparator-style threshold circuits, and general instrumentation. Because the amplifier is not rail-to-rail, input and output common-mode limits must be respected in low-voltage designs. For battery-powered equipment, verify input bias current and supply-current requirements against the system power budget. The DIP package also requires adequate through-hole spacing and mechanical clearance from adjacent heat-producing components.
When designing around MC3303PG, begin with the manufacturer pin-description and electrical-characteristics tables, especially for input common-mode range, output swing, supply current, and stability. Place bypass capacitors close to the supply pins and route feedback components to minimize parasitic capacitance. Avoid operating the output near either supply rail unless the selected output-load condition remains within the specified swing range.
This product page consolidates the manufacturer product information, distributor identification, package details, and practical engineering guidance for the MC3303PG. It also distinguishes the verified 14-pin DIP replacement candidates from broader functional equivalents so that PCB-level drop-in decisions are made with package and parameter checks rather than by device category alone.
直接替換替代品，適用於 MC3303PG — 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： MC3303PG （相同外形與佔位） — 差異在於 Input Offset Voltage, Mounting Type, Package, Product Type.
MC3303PG 最大額定值與電氣特性
| Number of Channels | 4 channels |
| Product Type | Quad operational amplifier |
| Supply Voltage Range | 3 V to 36 V |
| Unity-Gain Bandwidth | 1 MHz |
| Common-Mode Rejection Ratio | 70 dB minimum |
| Input Offset Voltage | 10 mV |
| Input Architecture | True differential input |
| Output Stage | Class AB |
| Compensation | Internal frequency compensation |
| Protection | Short-circuit protection |
| Input Bias Current | Low input bias current |
| Supply Configuration | Single supply |
| 封裝 | 14-PDIP |
| 安裝類型 | Through-hole |
MC3303PG 14-pdip 腳位配置指南
MC3303PG（14-pdip 封裝）的腳位配置。 此類比元件具有輸入、輸出與電源腳位。偏移歸零、補償與致能腳位配置請參閱製造商資料表。適用於訊號調理與放大器電路。
無詳細腳位定義資料： MC3303PG.
請參閱 資料表 以查看完整腳位配置。
典型應用
MC3303PG 適用於 6 應用s: Low-Frequency Sensor Conditioning, Audio Preamplification, Active Filter Design, Threshold and Comparison Circuits, Industrial Control and Automation, General Instrumentation Buffering.
Low-Frequency Sensor Conditioning
The MC3303PG fits low-frequency sensor-conditioning blocks that require several amplifier channels on a single board. Its four true-differential-input sections can amplify differential sensor outputs, buffer reference signals, and create gain stages around an analog front end. The 1 MHz unity-gain bandwidth provides more than adequate speed for many temperature, pressure, and position sensors, while the 70 dB minimum common-mode rejection helps reject common-mode noise coupled into the sensor wiring. Because the amplifier is not specified as rail-to-rail, the engineer must verify that the sensor output and amplified result remain within the input common-mode and output-swing limits. The 14-PDIP format is also convenient for prototypes, legacy industrial controls, and through-hole maintenance boards.
推薦
Audio Preamplification
MC3303PG can support low-frequency audio preamplifier and mixing functions where four Class AB amplifier sections are useful in one package. The 1 MHz gain-bandwidth product accommodates the audio range with substantial margin, while the true differential input architecture can accept balanced source signals without the artificial-ground arrangements sometimes required by older single-supply op-amps. Engineers should still check the exact input bias current, output swing, noise, and channel-matching figures against the source impedance and required headroom. The DIP package makes the device straightforward to prototype or retain in older audio equipment, although modern compact products will often prioritize a surface-mount equivalent.
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Active Filter Design
The four internally compensated amplifier sections in MC3303PG can implement first-order active-filter stages, gain blocks, or signal-shaping networks in instrumentation equipment. Its 1 MHz unity-gain bandwidth gives designers adequate loop-gain margin for many moderate-Q, low-frequency filters, while true differential inputs simplify balanced active-filter realizations. External resistors and capacitors determine the actual pole and zero locations, so component tolerances and parasitic capacitance must be considered. The IC does not inherently provide rail-to-rail outputs, so an asymmetric single-supply implementation may require an output bias reference. Confirm stability, common-mode range, and output-current capability for each intended filter configuration.
推薦
Threshold and Comparison Circuits
MC3303PG is suitable for threshold detection and open-loop comparison functions in control and monitoring systems. Its four amplifier sections allow independent comparators to monitor multiple sensor lines, product status signals, or supply-derived thresholds. The 3 V to 36 V single-supply range supports operation across compact control electronics and higher industrial voltage systems, although the actual input and output limits remain important. A comparator design should provide suitable logic-level translation when the output voltage range does not directly match the following digital device. Designers should also account for input offset voltage, which can shift the effective switching threshold, and use hysteresis where noise near the reference could otherwise cause repeated transitions.
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Industrial Control and Automation
The MC3303PG can provide compact analog amplification around industrial controllers, relay interfaces, and actuator drive signals when the system remains within the device's analog limits. Its four channels can combine error amplification, signal scaling, output buffering, and threshold detection, reducing the number of separate amplifiers on a through-hole control board. The 14-PDIP package provides convenient socket or soldered-board servicing, while the single-supply operation supports economical system architectures. Industrial suitability still depends on the exact temperature grade, isolation requirements, noise behavior, and compliance documentation of the ordered suffix. The amplifier should remain physically separated from high-temperature regulators or power components that could compromise through-hole assembly clearance.
推薦
General Instrumentation Buffering
MC3303PG is useful for buffering sources such as dividers, transducers, and generated reference signals in general-purpose instrumentation. The four independent sections permit two buffers plus two amplifiers in a single package, and true differential inputs are beneficial when the source is balanced or when rejecting shared noise is important. The listed 10 mV input offset voltage is significant for precision measurements, so gains should be selected to limit the resulting output error, and calibration may be needed in high-accuracy systems. The 1 MHz bandwidth is suitable for measurement bandwidths below that range, but the amplifier is not a substitute for modern low-offset or rail-to-rail precision devices when those characteristics dominate the design requirement.
推薦
推薦產品摘要
工程參考資料，適用於 MC3303PG — 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 | MC3403P | MC3403DG |
|---|---|---|---|
| Package | 14-PDIP | 14-PDIP - same package | 14-PDIP - package shown for comparison |
| Brand | onsemi | Texas Instruments | Texas Instruments |
| Number of Channels | 4 | 4 | 4 |
| Input Architecture | True differential input | True differential input | True differential input |
主要差異化特點
- Four integrated true-differential amplifier channels (對比MC3403P)
- Single-supply operation across a wide voltage range (對比MC3403DG)
- Specified 1 MHz bandwidth and 70 dB common-mode rejection (對比MC3403P)
- Simplified through-hole integration (對比MC3403DG)
設計說明
Treat the MC3303PG as a non-rail-to-rail amplifier. Check the datasheet common-mode input range and output-swing curves against the actual single-supply voltage, signal amplitude, load, and output bias point. A 5 V supply does not automatically permit 0 V to 5 V operation. Likewise, the listed 10 mV input offset voltage can create a meaningful error after substantial gain multiplication, so calculate the resulting offset and use suitable bias and calibration arrangements.
Place the supply bypass capacitor close to the IC power pin and route it using a short, low-inductance path. Keep amplifier feedback components close to their corresponding amplifier pins, and avoid long traces beneath the DIP where switching or high-current paths could couple noise into the inputs. For the 14-PDIP package, verify socket orientation, hole spacing, and clearance from tall adjacent components before committing the layout.
Use the amplifier within its specified common-mode and output ranges, especially in single-supply sensor circuits where inputs sit near ground. Add a deliberate midpoint bias when the source cannot be referenced correctly around the amplifier's usable input range. Keep sensor wiring away from motor and relay conductors, use a grounded shield where appropriate, and evaluate the 70 dB common-mode rejection figure against the actual noise frequency and source impedance.
Estimated: if the circuit operates at 12 V with 1 mA total quiescent current, the supply path consumes approximately 12 mW before considering load current and output-stage dissipation. Actual supply current depends on output swing, load, channel activity, and device-specific characteristics. Verify the worst-case supply current from the datasheet and provide local bypassing appropriate to the number of active channels rather than estimating thermal performance from nominal current alone.
合規資訊
No definitive RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals statement was present in the accessible product summaries. Confirm the exact suffix with the manufacturer's current compliance documentation before regulated use.
