LT1014IN - Quad Precision Op Amp, 5V-44V | Texas Instruments
MPN: LT1014IN ✓ AktifLT1014IN Genel Bakış
An operational amplifier is an analog integrated circuit that uses high-gain feedback to amplify the difference between two input voltages. A precision operational amplifier adds requirements for low input offset, low drift, accurate gain behavior, common-mode rejection, and power-supply rejection. The LT1014 belongs to the broader hierarchy of operational amplifier, analog amplifier, analog IC, and semiconductor. Its quad configuration provides four amplifiers while reducing package count, board area, and the number of external power connections compared with four single or dual amplifier packages.
The principal LT1014 features are its low 300 uV maximum input offset voltage at 25 °C for the LT1014 grade, 2.5 uV/°C maximum offset-voltage temperature coefficient, 8 million open-loop gain, 117 dB common-mode rejection, and 120 dB power-supply rejection. These characteristics are valuable in bridge and strain-gauge amplifiers, thermocouple conditioning circuits, low-current instrumentation, precision filters, threshold detection, and 4 mA-to-20 mA current-loop transmitters. The low 350 uA supply current supports battery-powered instrumentation where every milliamp can affect operating time.
The LT1014 can operate from single 5 V supplies as well as dual ±15 V supplies. Its input range extends to ground and its output can swing toward ground while sinking current, which supports single-supply sensing systems where the signal begins near 0 V. The 14-pin DIP package also supports breadboard prototyping, legacy industrial equipment, and through-hole production assemblies.
Typical applications include precision sensor interfaces, low-level current measurement, active analog filters, thermocouple amplifiers, process-control instrumentation, and 4 mA-to-20 mA loop transmitters. The device is most appropriate when low offset and drift are more important than the lower cost or higher drive capability of a general-purpose quad amplifier such as an LM324.
Designers should verify input common-mode range, output swing, load current, supply current, stability, and noise bandwidth for the intended configuration. Decoupling capacitors should be placed close to the supply pins, and precision resistor networks should use suitable tolerance and temperature-coefficient grades when gain accuracy matters.
This page combines the verified LT1014IN manufacturer information, distributor listing, package details, sourced drop-in family alternatives, and practical engineering guidance to support faster component selection and PCB-level implementation.
Drop-in alternatifler için LT1014IN — aynı paket, pin-başına uyumlu. PCB yeniden montajı gerektiren farklı paket bileşenleri dışlanmıştır.
Bu Serideki Variantlar
Yedek parça uyumlu olan aynı serideki modeller LT1014IN (aynı form faktörü ve ayağa oturma) — farklı olan Amplifier Type, Number of Channels.
LT1014CN
✅ YerleştirmeFiyat için iletişime geçin
Veri Şablonunu Görüntüle →LT1014ACN
✅ Yerleştirme ⚠️ Onaylanmamış Özellikler📋 Katalogda Olmayan Referans Alternatifi
LT1014DCN
✅ Yerleştirme ⚠️ Onaylanmamış Özellikler📋 Katalogda Olmayan Referans Alternatifi
LT1014DN
✅ Yerleştirme ⚠️ Onaylanmamış ÖzelliklerFiyat için iletişime geçin
Veri Şablonunu Görüntüle →LT1014IN#PBF
✅ Yerleştirme ⚠️ Onaylanmamış Özellikler📋 Katalogda Olmayan Referans Alternatifi
LT1014IN Maksimum Değerlendirmeler & Elektriksel Özellikler
| Amplifier Type | Quad precision operational amplifier |
| Number of Channels | 4 channels |
| Supply Voltage Range | 5 V to 44 V |
| Single-Supply Operation | 5 V |
| Dual-Supply Operation | +/-15 V |
| Input Offset Voltage | 300 uV maximum at 25 °C for LT1014 grade |
| Offset Voltage Temperature Coefficient | 2.5 uV/°C maximum for LT1014 grade |
| Family Typical Offset Voltage | 50 uV |
| Family Typical Offset Voltage Drift | 0.3 uV/°C |
| Open-Loop Gain | 8 million |
| Common-Mode Rejection Ratio | 117 dB |
| Power-Supply Rejection Ratio | 120 dB |
| Besleme Akımı | 350 uA |
| Input Common-Mode Range | Includes ground |
| Output Swing | Swings to ground while sinking current |
| Paket | 14-pin DIP |
| Montaj Türü | Through-hole |
LT1014IN Pin Yapısı
| Pin 1 | OFFSET NULL — Offset null for amplifier 1; family data states no offset null terminals are provided in the quad configuration |
| Pin 2 | INVERTING INPUT — Inverting input of amplifier 1 |
| Pin 3 | NON-INVERTING INPUT — Non-inverting input of amplifier 1 |
| Pin 4 | V- — Negative supply connection |
| Pin 5 | OFFSET NULL — Offset null connection |
| Pin 6 | OUTPUT — Output of amplifier 1 |
| Pin 7 | NON-INVERTING INPUT — Non-inverting input of amplifier 2 |
| Pin 8 | INVERTING INPUT — Inverting input of amplifier 2 |
| Pin 9 | OUTPUT — Output of amplifier 2 |
| Pin 10 | OFFSET NULL — Offset null connection |
| Pin 11 | V+ — Positive supply connection |
| Pin 12 | INVERTING INPUT — Inverting input of amplifier 3 |
| Pin 13 | NON-INVERTING INPUT — Non-inverting input of amplifier 3 |
| Pin 14 | OUTPUT — Output of amplifier 3 |
Tipik Uygulamalar
LT1014IN için uygundur 6 uygulamas: Strain-Gauge Signal Conditioning, Thermocouple Amplifier, 4mA-to-20mA Current-Loop Transmitter, Precision Active Filter, Battery-Powered Data Acquisition, Low-Level Current Measurement.
Strain-Gauge Signal Conditioning
The LT1014IN fits strain-gauge and bridge-amplifier front ends because its 300 uV maximum input offset voltage at 25 °C, 2.5 uV/°C maximum offset drift for the LT1014 grade, 117 dB CMRR, and 120 dB PSRR help preserve small differential signals. Four precision amplifiers in one 14-PDIP package can support input conditioning, gain stages, active filtering, and output buffering without requiring four separate packages. Use the device near the bridge so that small sensor outputs are amplified before cable resistance, switch noise, and later-stage errors contribute. Verify input bias-current requirements against the selected strain gauge and the common-mode range under worst-case excitation.
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Thermocouple Amplifier
The LT1014IN is suitable for thermocouple measurement because low offset voltage and low offset drift reduce errors in millivolt-level signals. According to the manufacturer family data, the LT1014 family provides 50 uV typical offset, 0.3 uV/°C typical drift, 8 million open-loop gain, 117 dB CMRR, and 120 dB PSRR. Its input range extending to ground and support for 5 V single-supply operation are useful for portable temperature-measurement equipment. Four amplifier sections can implement instrumentation amplification, cold-junction compensation, filtering, and output conditioning. The final design must include cold-junction compensation and verify that thermocouple polarity and biasing remain within the device's input limits.
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4mA-to-20mA Current-Loop Transmitter
The LT1014IN supports 4 mA-to-20 mA current-loop transmitter circuits that require accurate low-level sensing and stable control. Its 350 uA supply current, high 117 dB common-mode rejection, and 120 dB power-supply rejection help preserve accuracy in industrial environments with long cables and substantial supply variation. The 14-pin quad configuration provides amplifier sections for input amplification, filtering, and current-drive control where the output stage meets the required compliance voltage. Because the integrated output-current capability is not stated in the verified records, the application description assumes an external power transistor or compatible drive stage. Check loop compliance, output-current error, isolation requirements, and fault behavior during design verification.
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Precision Active Filter
The LT1014IN is appropriate for precision active-filter implementations where offset and drift directly affect the filter's low-frequency response. The verified LT1014 family data identifies 50 uV typical offset, 0.3 uV/°C typical drift, 8 million open-loop gain, and 350 uA supply current, allowing multiple filter poles to be implemented with four closely related amplifiers. Its 5 V single-supply and ±15 V dual-supply capability supports both portable and laboratory instrumentation. Use resistor ratios with suitable tolerance and temperature coefficient because the amplifier's low offset alone does not eliminate gain error. Verify noise gain stability, output swing, load, and the applicable filter frequency against the manufacturer's detailed data sheet.
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Battery-Powered Data Acquisition
The LT1014IN is well matched to battery-powered data-acquisition systems that acquire low-level sensor data while maintaining measurement stability. According to the manufacturer data, the LT1014 family operates from 5 V, consumes approximately 350 uA, and includes the ground-referenced input range required by many portable sensing circuits. Low offset and drift improve DC accuracy, while 117 dB CMRR and 120 dB PSRR reduce errors from battery variation and common-mode interference. Four amplifiers can implement a complete analog front end containing instrumentation gain, filtering, level shifting, and output buffering. Designers should still include an explicit low-power strategy for reference, ADC, leakage paths, and peripheral loads because the amplifier's 350 uA value does not represent complete-system consumption.
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Low-Level Current Measurement
The LT1014IN can amplify low-level voltage signals produced by shunt resistors, current sensors, and precision transducer outputs. Its 300 uV maximum input offset voltage at 25 °C for the LT1014 grade limits the input-referred error floor, while 8 million open-loop gain supports high closed-loop gain in suitable feedback networks. The 117 dB CMRR helps reject supply or ground disturbances common to both sensor and amplifier inputs. The quad package can combine a preamplifier, gain stage, active filter, and output driver. When working with very small shunt values, account for offset current, input bias current, thermal effects, and resistor self-heating. Verify that the selected amplifier configuration retains useful bandwidth at the required closed-loop gain.
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Önerilen Ürünler Özeti
Mühendislik referans verileri: LT1014IN — karşılaştırma, tasarım rehberi ve uyumluluk bilgileri.
Seçim Kılavuzu
Alternatiflerle Karşılaştırma
| Parametre | Bu Ürün | LT1014CN | LT1014ACN | LT1014DCN | LT1014DN | LT1014IN#PBF |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 14-PDIP | 14-PDIP | 14-PDIP | 14-PDIP | 14-PDIP | 14-PDIP |
| Amplifier Count | 4 circuits | 4 circuits | 4 circuits | 4 circuits | 4 circuits | 4 circuits |
| Supply Voltage Range | 5 V to 44 V | 5 V to 44 V | 5 V to 44 V | 5 V to 44 V | 5 V to 44 V | 5 V to 44 V |
| Precision-Grade Designation | LT1014 grade | LT1014 grade | LT1014A grade | LT1014D grade | LT1014D grade | LT1014 grade |
| Single-Supply Operation | 5 V | 5 V | 5 V | 5 V | 5 V | 5 V |
Ana Farklılayıcılar
- Four precision amplifiers in one through-hole package (karşılaştırma:LT1014CN)
- Low input-error characteristics for low-level measurement (karşılaştırma:LT1014CN)
- Low supply current for portable instrumentation (karşılaştırma:LT1014CN)
- Wide supply capability with ground-referenced inputs (karşılaştırma:LT1014CN)
Tasarım Notları
Do not treat the LT1014 family as pin-compatible with the 8-pin LT1013 dual amplifier or with single-amplifier packages such as OP07. The verified family information distinguishes the 14-pin quad LT1014 from the 8-pin dual LT1013. Before replacing the LT1014IN, verify the 14-pin outline, amplifier orientation, supply pins, offset-null connections, and the exact grade limits. Also confirm that the replacement can tolerate the actual supply voltage, which may be as high as 44 V.
Place the supply bypass capacitor close to the LT1014IN power pins and provide a low-impedance return path to minimize switching and series-source noise. The family data lists approximately 350 uA supply current, but total system demand also includes the load, feedback network, reference circuitry, and connected sensors. Because the family data sheet specifies both ±15 V and single 5 V operation, confirm input and output signal excursions rather than assuming the full rail-to-rail range.
Route each amplifier's feedback components close to its output and inverting input to minimize parasitic capacitance in high-gain circuits. Keep sensitive input traces away from switching nodes and the unused amplifier sections should be configured with stable feedback rather than left floating. The verified family data sheet emphasizes that the quad configuration has no offset-null terminals, so input offset must be managed through system calibration, instrumentation architecture, or device-grade selection.
Evaluate noise gain and closed-loop stability at the highest intended frequency, especially when the LT1014IN is used with high-value sensor resistors or large feedback networks. The family's 8 million open-loop gain supports precision gain, but parasitic capacitance can combine with input capacitance to create peaking. Add compensation only where supported by the manufacturer guidance, and validate the complete gain stage with realistic source impedance, load capacitance, supply decoupling, and PCB parasitics.
Uyumluluk Bilgisi
The supplied verified web records do not explicitly state RoHS, REACH, lead-free, halogen-free, conflict-minerals, or AEC-Q100 status for the exact LT1014IN orderable MPN. AEC-Q100 is not applicable to the precision op-amplifier category based on the supplied information. Consult the current manufacturer product page or material declaration for exact compliance claims.
