MC1430G - Low-Offset Amplifier, 33V/us | Motorola
MPN： MC1430G ✓ 啟用中MC1430G 概覽
An operational amplifier is a voltage-gain stage that compares its inverting and non-inverting inputs. The difference between those voltages is amplified by a very high open-loop gain and then conditioned to drive the intended external feedback network. In the broader semiconductor hierarchy, the MC1430G belongs to the operational-amplifier, analog-amplifier, linear-amplifier, and analog IC families. It is intended for applications requiring signal amplification rather than power conversion or logic operation.
The principal verified performance parameters include a 10 mV input offset voltage, 15 uA input bias current, 400 nA input bias-current variation, 33 V/us slew rate, 75 dB common-mode rejection, and 9.2 mA supply current. The 10 mV offset establishes the practical dc error that must be considered in precision signal chains. The 33 V/us slew rate limits how quickly the output can follow a changing input, while 75 dB common-mode rejection reduces the output response to voltage applied simultaneously to both inputs.
MC1430G operates from -9 V to +9 V and supports a 0 °C to +70 °C temperature range. These limits place it in the traditional bipolar, dual-supply general-purpose amplifier class. Its metal-can construction reflects an older package family used for through-hole and panel or chassis-style applications. The verified distributor descriptions consistently identify one amplifier circuit and a metal-can package, although the available listings express the package designation inconsistently.
Typical uses include low-level instrumentation, feedback stages around transducers, analog signal conditioning, and general-purpose voltage amplification. In a practical circuit, the amplifier should be configured with suitable negative feedback, supply bypassing, and output loading appropriate for the required signal bandwidth. The MC1430G can be used where a 33 V/us slew rate and 75 dB common-mode rejection are sufficient, but its 10 mV offset may make it less attractive than a lower-offset precision amplifier in high-gain dc measurement systems.
Designers should verify the exact physical lead numbering and package dimensions against the manufacturer datasheet before PCB layout or replacement work. The available verified data does not expose a complete pin map, and the distributor records refer to metal-can and TO-100-style descriptions inconsistently. Power-supply bypassing, input common-mode range, output swing, bias-current compensation, and stability with the selected feedback network also require confirmation before production release.
This page consolidates the verified distributor specifications, sourcing information, package ambiguity, and selection guidance for the MC1430G. It also separates directly verified data from fields that still require manufacturer-datasheet confirmation, helping engineers avoid treating generic cross-reference pages as proof of pin-to-pin compatibility.
直接替換替代品，適用於 MC1430G — 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。
此產品無可直接替換的替代品。
申請替代品MC1430G 最大額定值與電氣特性
| Amplifier Type | Standard general-purpose operational amplifier |
| Number of Circuits | 1 circuit |
| Supply Voltage Range | -9 V to +9 V |
| 工作溫度範圍 | 0 °C to +70 °C |
| Input Offset Voltage | 10 mV |
| Input Bias Current | 15 uA |
| Input Bias Current Difference | 400 nA |
| Slew Rate | 33 V/us |
| Common-Mode Rejection Ratio | 75 dB |
| 供應電流 | 9.2 mA |
| 封裝 | Metal can / TO-100-style package |
| 安裝類型 | Through-hole |
| 類別 | Instrumentation, operational amplifier, buffer amplifier |
| Manufacturer | Motorola |
| Operating Supply Current | 9.2 mA |
MC1430G metal can / to-100-style package 腳位配置指南
MC1430G（metal can / to-100-style package 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： MC1430G.
請參閱 資料表 以查看完整腳位配置。
典型應用
MC1430G 適用於 6 應用s: General-Purpose Signal Conditioning, Low-Level Instrumentation, Transducer Signal Amplification, Active Feedback Control, Analog Sensor Interface, Legacy Through-Hole Amplifier Module.
General-Purpose Signal Conditioning
The MC1430G is suitable for general-purpose signal conditioning when the source produces a small differential voltage and the system can tolerate a 10 mV input offset. Its verified 33 V/us slew rate supports moderate-bandwidth waveforms, while the 75 dB common-mode rejection ratio helps reject common voltage applied to both inputs. The device operates from -9 V to +9 V and consumes 9.2 mA, making it appropriate for conventional through-hole laboratory or control equipment. Designers should use stable negative feedback, place supply-bypass capacitors near the device, and verify input common-mode and output-swing limits from the manufacturer datasheet before scaling the signal.
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Low-Level Instrumentation
The MC1430G can serve as a gain stage in a low-level instrumentation circuit when its 10 mV offset and 15 uA input bias current fit the measurement error budget. A 75 dB common-mode rejection ratio can reduce output disturbance from common-mode voltage, making the device relevant to sensors or bridges that operate away from ground. At higher closed-loop gain, however, input offset is multiplied, so the available 10 mV specification becomes increasingly important. Confirm the input common-mode range, output swing, noise, and bias-current compensation requirements in the manufacturer datasheet, and choose a precision amplifier when the measurement demands offset well below 10 mV.
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Transducer Signal Amplification
The MC1430G can amplify the differential output of a resistive or active transducer when the required bandwidth is compatible with its verified 33 V/us slew rate and the input source does not exceed the device's allowable common-mode range. The 15 uA input bias current is the principal source-level consideration because it produces an error across high source impedances. Designers should calculate that interaction, provide suitable bypassing, and place the amplifier where thermal gradients and ground currents do not disturb the signal. The 10 mV offset and 75 dB CMRR are adequate only if they satisfy the transducer's complete error specification.
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Active Feedback Control
The MC1430G can be used in an active-feedback control loop where a bipolar general-purpose amplifier, dual supplies, and a 9.2 mA supply current are acceptable. Its 33 V/us slew rate limits large-signal response, while the 75 dB common-mode rejection can help keep a differential control signal centered on a larger common-mode level. Stability must be established for the selected feedback network, load, and supply decoupling rather than assumed from the generic amplifier classification. Check output swing, slew-limited settling time, input range, and thermal performance, and use an alternative with lower offset or faster slew rate if the loop requires either.
推薦
Analog Sensor Interface
The MC1430G can interface a low-voltage analog sensor when its 10 mV offset is acceptable and the sensor's output remains within the amplifier's input common-mode range. The verified 15 uA input bias current should be compared with the sensor's effective output impedance, while the 75 dB CMRR helps with common-mode sensor excitation. The traditional -9 V to +9 V operating capability permits positive and negative signal handling in suitable circuits. Because the available records do not provide complete noise, bias-current compensation, or input-range data, prototype validation and manufacturer-datasheet review are required before using it with high-impedance or temperature-sensitive sensors.
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Legacy Through-Hole Amplifier Module
The MC1430G is relevant to repair and modernization of legacy equipment that uses a metal-can or TO-100-style single amplifier and a -9 V to +9 V supply. Its 10 mV offset, 15 uA input bias current, 33 V/us slew rate, and 75 dB CMRR provide a defined baseline for deciding whether an original device remains appropriate. Exact mechanical compatibility must be established from the manufacturer drawing because distributor package descriptions are inconsistent. Before substitution, verify every lead, mounting dimension, supply polarity, and signal connection; a functional amplifier in a different package is not a drop-in replacement and will require board or wiring changes.
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推薦產品摘要
工程參考資料，適用於 MC1430G — 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 |
|---|---|
| Package | Metal can / TO-100-style package |
| Brand | Motorola |
| Number of Circuits | 1 circuit |
| Supply Voltage Range | -9 V to +9 V |
| Operating Temperature Range | 0 °C to +70 °C |
| Input Offset Voltage | 10 mV |
| Input Bias Current | 15 uA |
| Slew Rate | 33 V/us |
| Common-Mode Rejection Ratio | 75 dB |
| Supply Current | 9.2 mA |
| Unit Price as of 2026-10-29 | $5.8014 |
主要差異化特點
- Single-circuit general-purpose implementation (對比MC1458D)
- Metal-can or TO-100-style construction (對比LM324D)
- Defined legacy performance baseline (對比MC3403D)
設計說明
The verified supply-current figure is 9.2 mA with an operating range of -9 V to +9 V. Before layout, confirm whether the design uses dual supplies or a midpoint-referenced single supply, because the allowable input and output ranges are not present in the supplied records. Place local bypass capacitors at the supply pins and preserve a low-impedance return path. Do not infer the correct lead numbers from the package name; use the manufacturer pinout because the distributor records conflict.
Route the amplifier's input, feedback, output, and ground connections to minimize susceptibility to injected current. In particular, the verified 15 uA input bias current can create an appreciable voltage error when paired with a high source impedance. Keep input leads short, avoid parallel paths between the input and ground, and provide a quiet return plane. For a high-gain circuit, compare the 10 mV input offset after multiplication by the intended noise gain against the total measurement-error budget.
The most important design pitfall is treating a generic cross-reference result as proof of drop-in compatibility. The supplied substitute searches returned tool links and the target listing rather than a verified equivalent MPN. A valid replacement must match the physical lead pattern and package dimensions as well as the -9 V to +9 V supply, input common-mode range, 10 mV offset, 15 uA bias current, 33 V/us slew rate, and output-swing requirements. Verify these conditions before changing the MPN.
合規資訊
The supplied verified distributor data does not state RoHS, REACH, lead-free, halogen-free, or conflict-minerals status. The MC1430G is a legacy general-purpose amplifier rather than an automotive-qualified device, so AEC-Q100 is treated as not applicable.
