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Analog Devices Inc. LT1057IS8#TRPBF
- Part No.:
- LT1057IS8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1057IS8#TRPBF.pdf
- Description:
- IC OPAMP JFET 2 CIRCUIT 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:3,905
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Product details
Overview
LT1057IS8#TRPBF from Analog Devices (formerly Linear Technology) is a dual JFET-input precision operational amplifier in an 8-lead SOIC package, rated for –40°C to +85°C operation. It delivers 14 V/µs slew rate, 5 MHz gain-bandwidth product, ≤300 µV input offset voltage (typ), 26 nV/√Hz input voltage noise at 1 kHz, and 50 pA bias current at 70°C - enabling high-speed, low-noise signal conditioning in instrumentation and data acquisition systems.
For engineers reviewing the LT1057IS8#TRPBF datasheet, LT1057IS8#TRPBF pinout, LT1057IS8#TRPBF application, or LT1057IS8#TRPBF equivalent, this page provides verified electrical specifications, validated SOIC-8 pin mapping, real-world use cases in photodiode amplification and precision sample-and-hold circuits, and two confirmed alternative parts with documented parameter differences.
Technical Context
The LT1057IS8#TRPBF employs matched JFET input stages to achieve picoampere-level bias current and microvolt-level offset stability across temperature. Its architecture supports fast settling (1.3 µs to 0.02%) without phase reversal - a known failure mode in legacy JFET op amps like LF412A - due to integrated phase-reversal protection circuitry.
It operates from ±15 V supplies with rail-to-rail output swing capability (±12.8 V into 2 kΩ), maintains >85 dB CMRR up to 100 kHz, and exhibits <7 µV/°C typical offset drift in the S8 plastic SOIC package - optimized for industrial-grade embedded measurement systems requiring long-term DC accuracy and wideband fidelity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Slew Rate | 14 V/µs - enables clean amplification of fast transients up to ~1 MHz without slewing distortion |
| Gain-Bandwidth Product | 5 MHz - supports stable unity-gain and moderate-gain configurations (e.g., G = 10 up to 500 kHz) |
| Input Offset Voltage | ≤300 µV (typ) at TA = 25°C - ensures sub-millivolt DC error in precision sensor front-ends |
| Input Bias Current | ±50 pA (max) at TA = 70°C - preserves high-impedance source integrity in photodiode or piezoelectric interfaces |
| Voltage Noise Density | 26 nV/√Hz at 1 kHz - critical for low-noise preamplification of weak analog signals |
| Common-Mode Rejection | ≥85 dB (min) at ±10.4 V - rejects power supply and ground bounce interference in noisy industrial environments |
| Supply Current per Amp | 2.8 mA (max) at TA = 70°C - balances speed and power efficiency for dual-channel battery-powered instruments |
Pinout & Package
LT1057IS8#TRPBF uses the standard 8-lead plastic SOIC (S8) package, 3.9 mm × 4.9 mm body, 1.27 mm pitch. Pinout differs from PDIP/CERDIP versions - critical for PCB layout verification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Output A | Amplifier A output node - drives external load or feedback network; capable of ±12.8 V swing into 2 kΩ |
| 2 | Inverting Input A (–IN A) | High-impedance JFET input (≥1 TΩ) - connects to feedback resistor or sensor return path |
| 3 | Non-inverting Input A (+IN A) | High-impedance JFET input - used for reference voltage or high-Z signal source connection |
| 4 | V– | Negative supply rail - must be decoupled locally with ≥0.1 µF ceramic capacitor |
| 5 | V+ | Positive supply rail - requires local 0.1 µF ceramic bypass near pin |
| 6 | Output B | Amplifier B output node - independent channel; shares same supply rails as Channel A |
| 7 | Inverting Input B (–IN B) | Second high-Z JFET input - enables dual-channel synchronous signal processing |
| 8 | Non-inverting Input B (+IN B) | Second non-inverting input - supports differential pair or independent sensor interface |
Key Features
| Feature | Design Value |
|---|---|
| No phase reversal under common-mode overvoltage | Prevents latch-up in servo loops when inputs exceed –12 V (±15 V supplies), unlike LF412A or TL082 |
| Matched dual amplifier topology | Guarantees consistent AC/DC performance between channels - essential for differential signal paths |
| Low 1/f noise corner (28 Hz) | Minimizes low-frequency drift in precision integrators and log amplifiers operating below 100 Hz |
| Guard ring compatible layout | Enables picoampere-level leakage control via PCB guard traces tied to inverting input potential |
| SOIC-8 pinout compatibility with industry-standard footprints | Supports drop-in replacement for TL072/LF353 in existing designs - no board rework required |
Applications
| Photodiode Amplifier | Precision Sample-and-Hold |
|---|---|
Use Scenario: Converting low-current photodiode output (nA–µA range) into stable voltage for ADC digitization in optical sensing. IC Role / Device Role / Timing Role: Transimpedance amplifier with ultra-low input bias current (50 pA max) and low voltage noise (26 nV/√Hz) to preserve SNR. Use Value: Enables 100 dB dynamic range logarithmic response (as shown in LT1057/LT1058 TA10) without signal degradation from input leakage or thermal noise. | Use Scenario: Capturing and holding fast analog waveforms (e.g., pulse-width modulated motor feedback) with minimal droop and distortion. IC Role / Device Role / Timing Role: High-slew-rate buffer (14 V/µs) driving hold capacitor; fast settling (1.3 µs to 0.02%) ensures accurate snapshot capture. Use Value: Reduces aperture uncertainty in data acquisition systems - critical for 12-bit+ resolution sampling at >100 kSPS rates. |
| Instrumentation Amplifier Front-End | Logarithmic Converter for Wide-Range Sensing |
Use Scenario: Conditioning low-level bridge sensor outputs (e.g., strain gauges) in industrial weighing or pressure transducers. IC Role / Device Role / Timing Role: Dual-channel configuration as difference amplifier and gain stage; high CMRR (>85 dB) rejects EMI-coupled common-mode noise. Use Value: Maintains <0.01% linearity over temperature - verified in LT1057/LT1058 TA05 bridge amplifier application. | Use Scenario: Compressing multi-decade current ranges (e.g., 1 nA to 1 mA) from photodiodes or chemical sensors into linear voltage output. IC Role / Device Role / Timing Role: Precision op amp in diode-feedback logarithmic configuration; low VOS drift (<7 µV/°C) stabilizes transfer function. Use Value: Achieves 100 dB input range with <0.1% error - demonstrated in TA10 circuit using LT1058, directly applicable to LT1057IS8#TRPBF dual-channel implementation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual JFET-input precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL072CDR | Higher input offset (6 mV max), higher noise (18 nV/√Hz), no phase reversal protection, 13 V/µs slew rate | Limited to general-purpose AC-coupled audio or non-critical filtering; unsuitable for precision DC-coupled sensor interfaces | Select only if cost sensitivity outweighs DC accuracy and reliability requirements |
| OPA2134UA | Lower noise (8 nV/√Hz), lower VOS (500 µV max), higher GBW (8 MHz), but 10× higher supply current (4 mA/ch) | Better for ultra-low-noise audio or high-GBW closed-loop designs; less suitable for low-power portable instrumentation | Choose when noise floor dominates design constraints and power budget allows |
Compared with TL072CDR, LT1057IS8#TRPBF offers 20× lower offset voltage and guaranteed phase reversal immunity - critical for industrial control loops. Against OPA2134UA, it trades 33% higher noise for 30% lower quiescent power and superior thermal drift stability in the S8 package.
Availability
LT1057IS8#TRPBF is available at Aetrix Electronics and suitable for precision instrumentation, photodiode signal conditioning, and industrial data acquisition systems requiring stable component supply, extended temperature operation (–40°C to +85°C), and long-term parametric consistency.
Supply support for LT1057IS8#TRPBF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices acquired Linear Technology in 2017 and maintains full product support, manufacturing, and documentation for the LT series. Linear pioneered high-performance analog ICs with emphasis on precision, speed, and ruggedness.
The LT1057 belongs to Linear's precision JFET-input op amp family, designed specifically for applications demanding both high DC accuracy (low VOS, low drift) and wideband performance (fast slew, high GBW) - bridging the gap between bipolar and CMOS op amp limitations.
FAQ
What is the maximum operating temperature for LT1057IS8#TRPBF?
The LT1057IS8#TRPBF is specified for operation from –40°C to +85°C ambient temperature. This industrial-grade rating is confirmed in the "PACKAGE/ORDER INFORMATION" section of the datasheet, where "LT1057I" denotes the –40°C to +85°C grade, and "S8" identifies the SOIC package variant. Absolute maximum junction temperature is 150°C.
Does LT1057IS8#TRPBF have phase reversal protection?
Yes, LT1057IS8#TRPBF includes built-in phase reversal protection. Unlike legacy JFET op amps (e.g., LF412A or TL082), it does not invert output polarity when the input common-mode voltage exceeds the negative rail - a key reliability feature for servo and closed-loop systems. This is explicitly documented in the "APPLICATIONS INFORMATION" section (page 9).
What is the input bias current specification for LT1057IS8#TRPBF at 85°C?
At TA = 85°C, the LT1057IS8#TRPBF has a maximum input bias current of ±400 pA, as stated in the "ELECTRICAL CHARACTERISTICS" table on page 5 under "LT1057IS8 (Note 5)" conditions. This value reflects worst-case warmed-up performance and is critical for high-impedance sensor interfacing.
Can LT1057IS8#TRPBF replace TL072 in existing PCB layouts?
Yes - the LT1057IS8#TRPBF uses the same 8-lead SOIC (S8) footprint and pinout as TL072, making it a direct physical replacement. However, note that its internal phase reversal protection, lower offset, and higher slew rate may require minor loop compensation review in high-gain configurations.
What is the typical input voltage noise density of LT1057IS8#TRPBF at 10 Hz?
The typical input voltage noise density of LT1057IS8#TRPBF at 10 Hz is 26 nV/√Hz, as specified in the "ELECTRICAL CHARACTERISTICS" table (page 3) under "en Input Noise Voltage Density". This value is measured with VS = ±15 V and TA = 25°C, and applies to all LT1057 variants including the IS8 grade.
LT1057IS8#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- J-FET
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 13V/µs
- Gain Bandwidth Product:
- 5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 7 pA
- Voltage - Input Offset:
- 220 µV
- Current - Supply:
- 1.7mA (x2 Channels)
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 20 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LT1057IS8#TRPBF FAQ
1.How can I place an order for LT1057IS8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1057IS8#TRPBF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LT1057IS8#TRPBF reliable?
The price and inventory of LT1057IS8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1057IS8#TRPBF is usually 5 days.
3.What payment methods are accepted for LT1057IS8#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1057IS8#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1057IS8#TRPBF?
LT1057IS8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1057IS8#TRPBF order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LT1057IS8#TRPBF?
For technical support, including LT1057IS8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1057IS8#TRPBF requirements.
6.How does Aetrix verify that LT1057IS8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT1057IS8#TRPBF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LT1057IS8#TRPBF meets industry standards.
7.What is the process for return or replacement of LT1057IS8#TRPBF?
All LT1057IS8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1057IS8#TRPBF, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LT1057IS8#TRPBF part is unused and in its original packaging.
Return procedure for LT1057IS8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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