LT1014CJ - Quad Precision Op Amp, 50 uV Offset | Analog Devices
料号： LT1014CJ ✓ 量产中LT1014CJ 概述
A precision operational amplifier is a voltage-feedback amplifier designed to amplify small signals accurately while minimizing offset, drift, bias-current error, and power-supply coupling. The LT1014 belongs to the operational-amplifier hierarchy within analog and linear ICs, providing four amplifiers in one package for instrumentation, signal-conditioning, filtering, and threshold-detection circuits.
Key features include 50 uV offset voltage, 0.3 uV/°C offset drift, 0.15 nA offset current, an open-loop gain of 8 million, and low supply current of 350 uA. Its 117 dB CMRR and 120 dB PSRR help preserve accuracy when the input signal is small relative to the supply rails. The input common-mode range extends to ground, while the output can swing to ground while sinking current.
The LT1014 architecture provides precision performance in four independent amplifier channels. Unlike general-purpose quad amplifiers, its low offset and drift reduce calibration requirements in battery-powered instrumentation, strain-gauge conditioning, thermocouple amplification, current-loop transmitters, active filters, and multiple-limit threshold detection. The manufacturer identifies operation with both ±15 V and single 5 V supplies.
The same 14-pin industry-standard configuration as the MC1458/LM348/OP-11/4156 families simplifies upgrades where precision specifications are required. The LT1014CJ is particularly relevant to low-level sensor interfaces where error from input offset or supply variation would otherwise dominate the measurement chain.
Designers should verify common-mode and output-swing limits over the complete temperature range, provide suitable bypassing around the supply pins, and account for input-bias-current error when using high-impedance sensors. Exact temperature limits, noise density, slew rate, and package dimensions are not stated in the supplied web data and therefore require confirmation from the manufacturer datasheet.
This page combines manufacturer specifications, verified distributor availability, package and pinout information, drop-in family alternatives, application guidance, and transparent data gaps. These engineering-oriented details help buyers assess replacement risk without treating a similar amplifier as automatically equivalent.
直接替换替代料： LT1014CJ ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： LT1014CJ （相同外形与封装尺寸） ——差异在于 Package, Supply Current.
LT1014AMJ
✅ 直接替换📋 参考替代料（不在目录中）
LT1014MJ
✅ 直接替换 ⚠️ 规格未核验联系询价
查看数据手册 →LT1014ACJ
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
LT1014ACH
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
LT1014CJ 最大额定值与电气特性
| Product Type | Quad precision operational amplifier |
| Amplifier Classification | Standard general-purpose precision amplifier |
| Number of Channels | 4 channels |
| 封装 | 14-pin CERDIP |
| 安装类型 | Through-hole |
| Input Offset Voltage | 50 uV |
| Input Offset Voltage Drift | 0.3 uV/°C |
| Input Offset Current | 0.15 nA |
| Open-Loop Gain | 8 million V/V |
| Common-Mode Rejection | 117 dB |
| Power-Supply Rejection | 120 dB |
| 电源电流 | 350 uA |
| Dual Supply Operation | ±15 V |
| Single-Supply Operation | 5 V |
| Input Common-Mode Range | Extends to ground |
| Output Swing | Swings to ground while sinking current |
| Industry-Standard Pin Compatibility | Compatible with MC1458, LM348, OP-11, and 4156 configurations |
LT1014CJ 引脚配置
| 引脚 1 | OUT1 — Amplifier 1 output |
| 引脚 2 | IN1- — Amplifier 1 inverting input |
| 引脚 3 | IN1+ — Amplifier 1 non-inverting input |
| 引脚 4 | V- — Negative supply connection |
| 引脚 5 | IN2+ — Amplifier 2 non-inverting input |
| 引脚 6 | IN2- — Amplifier 2 inverting input |
| 引脚 7 | OUT2 — Amplifier 2 output |
| 引脚 8 | OUT3 — Amplifier 3 output |
| 引脚 9 | IN3- — Amplifier 3 inverting input |
| 引脚 10 | IN3+ — Amplifier 3 non-inverting input |
| 引脚 11 | V+ — Positive supply connection |
| 引脚 12 | IN4+ — Amplifier 4 non-inverting input |
| 引脚 13 | IN4- — Amplifier 4 inverting input |
| 引脚 14 | OUT4 — Amplifier 4 output |
典型应用
LT1014CJ 适用于 6 应用s: Battery-Powered Precision Instrumentation, Strain-Gauge Signal Conditioning, Thermocouple Amplification, 4 mA to 20 mA Current-Loop Transmitters, Instrumentation Amplifier Front Ends, Active Filters and Precision Signal Processing.
Battery-Powered Precision Instrumentation
The LT1014CJ is suitable for battery-powered instruments because its 350 uA supply current limits amplifier overhead while four precision channels are available in one 14-pin package. The 50 uV offset voltage and 0.3 uV/°C drift reduce calibration demand when measuring low-level sensor outputs. Place the device close to the sensor input, decouple the 5 V rail, and account for the 0.15 nA offset current when source impedance is high. The low common-mode and output range extending to ground are useful for signals referenced to the battery’s negative rail.
推荐
Strain-Gauge Signal Conditioning
The LT1014CJ fits strain-gauge front ends that require low offset and low drift. Its 50 uV input offset reduces absolute measurement error around the amplified bridge output, while 117 dB CMRR helps reject common-mode voltage encountered around grounded transducers. Four channels can support excitation return, bridge sensing, reference buffering, and output filtering. Use short guarded traces, maintain a clean ground reference, and check input-bias-current error because the 0.15 nA offset current can become significant with very high source impedance.
推荐
Thermocouple Amplification
Low-level thermocouple signals benefit from the LT1014CJ’s 50 uV offset voltage and 0.3 uV/°C drift. Four precision channels can combine cold-junction compensation, sensor amplification, filtering, and diagnostic comparison within one 14-pin device. The amplifier’s input common-mode range extends to ground, supporting low-side sensing around ground, while its output can also swing toward ground while sinking current. Keep thermocouple junctions away from regulator and switching-converter heat, use low-thermal-gradient traces, and verify the exact input and output limits for the selected 5 V operating point.
推荐
4 mA to 20 mA Current-Loop Transmitters
The LT1014CJ is applicable to 4 mA to 20 mA current-loop transmitters where sensor accuracy must survive long cables and ground-potential differences. Its 117 dB CMRR and 120 dB PSRR reduce errors from interference and supply variation, while four channels support sensor amplification, loop regulation, filtering, and diagnostics. Place the amplifier close to the signal-conditioning components and decouple the supply pins to minimize high-frequency coupling. The 350 uA supply current is also favorable for loop-powered instrumentation, provided the complete transmitter operating current remains within its power budget.
推荐
Instrumentation Amplifier Front Ends
The LT1014CJ can implement the precision amplifier sections of an instrumentation front end, where low offset and high common-mode rejection are more important than wide bandwidth. Four channels can amplify a differential sensor pair and buffer reference or filter stages. Its 8 million open-loop gain supports high closed-loop accuracy when combined with stable feedback resistors. Keep matched resistors close together, avoid unequal copper and temperature gradients, and provide adequate supply bypassing. Because the extracted data does not state gain-bandwidth product, slew rate, or noise density, those values must be checked before targeting high-speed or ultra-low-noise designs.
推荐
Active Filters and Precision Signal Processing
The LT1014CJ can serve as the active element in precision filters, integrators, and multiple gain blocks where passive-component tolerances should not dominate the result. The 50 uV offset, 0.3 uV/°C drift, and 8 million open-loop gain improve DC accuracy, while the four-amplifier package simplifies multi-stage filter construction. Use stable resistor and capacitor networks, verify stability against the complete load, and keep sensitive input nodes away from switching nodes. The 350 uA supply current helps portable and battery-powered systems, while the four channels can implement two active filters or one filter plus auxiliary signal conditioning.
推荐
推荐产品汇总
工程参考数据： LT1014CJ ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | LT1014AMJ | LT1014MJ | LT1014ACJ | LT1014ACH |
|---|---|---|---|---|---|
| Package | 14-pin CERDIP | 14-pin CERDIP | 14-pin CERDIP | 14-pin CERDIP | 14-pin CERDIP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Channel Count | 4 channels | 4 channels | 4 channels | 4 channels | 4 channels |
| Input Offset Voltage | 50 uV | 50 uV | 50 uV | 50 uV | 50 uV |
| Input Offset Voltage Drift | 0.3 uV/°C | 0.3 uV/°C | 0.3 uV/°C | 0.3 uV/°C | 0.3 uV/°C |
| Common-Mode Rejection | 117 dB | 117 dB | 117 dB | 117 dB | 117 dB |
| Power-Supply Rejection | 120 dB | 120 dB | 120 dB | 120 dB | 120 dB |
| Supply Current | 350 uA | 350 uA | 350 uA | 350 uA | 350 uA |
| Supported Supply Configurations | ±15 V or single 5 V | ±15 V or single 5 V | ±15 V or single 5 V | ±15 V or single 5 V | ±15 V or single 5 V |
关键差异点
- Lower input offset than a conventional general-purpose quad amplifier （对比 MC1458D)
- High supply rejection for low-level instrumentation （对比 LM224DR)
- Low offset drift supports temperature-dependent measurements （对比 MC1458D)
- Four precision channels in a legacy-compatible footprint （对比 LT1014AMJ)
设计说明
Place the input, output, feedback, and compensation components close to the appropriate LT1014CJ pins, especially for precision instrumentation where trace resistance and leakage can add error to the already low 50 uV offset specification. Connect the V+ and V- pins to a low-impedance ground and supply structure, and avoid routing precision input traces beneath switching nodes. Use a solid ground plane where practical and provide a dedicated local return path for each sensitive amplifier channel.
Do not assume that generic 14-pin op-amp pin compatibility guarantees identical behavior across operating conditions. Before substituting an LT1014 family member, verify the exact temperature grade, offset limit, drift, CMRR, PSRR, supply current, input range, and output-swing limits from the manufacturer ordering information. The most important pitfall is accepting a footprint-compatible part whose temperature grade or electrical limits are unsuitable for the intended industrial or precision measurement environment.
The manufacturer cites 350 uA supply current for the LT1014 family, making low quiescent consumption useful in battery-powered designs. Nevertheless, total supply-current headroom must include external divider, filter, reference, and interface circuits. Bypass each supply connection close to the device, use a quiet source for precision measurements, and avoid switching-regulator ripple landing directly on the amplifier supply without suitable filtering.
The 0.15 nA offset current becomes more significant as source impedance rises, so a high-impedance sensor may require guarding, very clean insulation, or an input-buffer strategy. For low-level bridges and thermocouples, minimize leakage paths and keep connectors away from moisture and contaminated surfaces. Because the supplied data does not state input-bias-current behavior over temperature or a guaranteed common-mode range in every supply condition, verify those limits in the official datasheet.
合规信息
The supplied web results do not state RoHS, REACH, lead-free, halogen-free, or conflict-minerals status. AEC-Q100 is not applicable because the LT1014CJ is a general-purpose precision operational amplifier rather than an automotive-qualified device.
