My Inquiry
My Account
Analog Devices Inc. LT1124CS8-1#TRPBF
- Part No.:
- LT1124CS8-1#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1124CS8-1#TRPBF.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:1,344
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LT1124CS8-1#TRPBF from Analog Devices (formerly Linear Technology) is a dual low-noise, high-speed precision operational amplifier in an 8-lead plastic SOIC package with standard pinout. It delivers 2.7nV/√Hz typical input voltage noise, 4.5V/µs slew rate, and 12.5MHz gain-bandwidth product, enabling high-fidelity signal conditioning in instrumentation amplifier front-ends and audio preamplifiers.
For engineers reviewing the LT1124CS8-1#TRPBF datasheet, LT1124CS8-1#TRPBF pinout, LT1124CS8-1#TRPBF application, or LT1124CS8-1#TRPBF equivalent, this page provides verified specifications, validated pin functions, real-world use cases in strain gauge and infrared detection systems, and two confirmed alternative op amps with documented performance trade-offs.
Technical Context
The LT1124CS8-1#TRPBF implements a bipolar input stage optimized for low 1/f and broadband voltage noise, with 100% tested noise (≤4.2nV/√Hz max at 1kHz) and slew rate (≥4.5V/µs). Its high open-loop gain (≥5 million) and 112dB minimum CMRR support microvolt-level accuracy in DC-coupled sensor interfaces.
It features matched internal transistor pairs across both amplifiers to minimize inter-channel drift and offset mismatch-critical for two-op-amp instrumentation topologies. The standard SO-8 pinout (Pin 1 = OUT A, Pin 2 = –IN A, Pin 3 = +IN A, Pin 4 = V–, Pin 5 = V+, Pin 6 = OUT B, Pin 7 = –IN B, Pin 8 = +IN B) enables direct replacement of legacy dual op amps without PCB rework.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Noise Density | 2.7nV/√Hz typ @ 1kHz - enables sub-µV signal resolution in low-frequency sensor chains |
| Slew Rate | 4.5V/µs typ - supports clean 10Vpp output at ≥100kHz without slewing distortion |
| Gain-BW Product | 12.5MHz typ - allows stable closed-loop gain of 100 up to 125kHz |
| Input Offset Voltage | 70µV max (Prime Grade) - ensures ≤0.007% gain error in 1V full-scale precision amplifiers |
| CMRR | 112dB min - rejects >300k:1 common-mode interference in bridge-based transducer circuits |
| Supply Current | 2.75mA max per amplifier - enables dual-channel precision amplification within 5.5mA total budget |
| Operating Temp | 0°C to 70°C - qualified for commercial-grade industrial control and test equipment |
Pinout & Package
LT1124CS8-1#TRPBF uses an 8-lead plastic SOIC (S8) package with standard pinout-distinct from the rotated pinout used in non–"-1" variants. Package dimensions comply with JEDEC MS-012, body width 3.9mm, lead pitch 1.27mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives feedback network or next-stage load directly |
| 2 | –IN A | Inverting input of Amp A - connects to feedback resistor and signal source in inverting configurations |
| 3 | +IN A | Non-inverting input of Amp A - referenced to ground or bias network in unity-gain buffers |
| 4 | V– | Negative supply rail - must be decoupled with ≥0.1µF ceramic capacitor near pin |
| 5 | V+ | Positive supply rail - accepts ±3V to ±18V operation; requires local 0.1µF bypass |
| 6 | OUT B | Amplifier B output - independent channel usable for differential output or second signal path |
| 7 | –IN B | Inverting input of Amp B - electrically isolated from Amp A; supports separate feedback networks |
| 8 | +IN B | Non-inverting input of Amp B - maintains same input impedance and noise characteristics as Pin 3 |
Key Features
| Feature | Design Value |
|---|---|
| 100% tested voltage noise | Each amplifier individually screened to ≤4.2nV/√Hz - guarantees low-noise performance without binning |
| Standard SO-8 pinout | Direct drop-in replacement for OP-270, LM358, and other dual op amps using conventional layout |
| High CMRR & PSRR | 112dB CMRR / 116dB PSRR minimum - preserves signal integrity in noisy industrial power environments |
| Low input bias current | ±7nA max - minimizes voltage error across high-impedance sources like piezoelectric sensors |
| Matched dual architecture | Guaranteed ∆VOS ≤140µV between channels - enables accurate two-op-amp instrumentation amplifier designs |
Applications
| Strain Gauge Amplifier | Infrared Detector Interface |
|---|---|
Use Scenario: Amplifying mV-level Wheatstone bridge outputs from metal foil strain gauges in load cells and pressure sensors. IC Role / Device Role / Timing Role: First-stage low-noise, high-gain instrumentation amplifier with DC coupling and <1µV offset drift. Use Value: 2.7nV/√Hz noise floor enables resolution of <10ppm full-scale strain changes without external filtering. |
Use Scenario: Conditioning weak, low-frequency signals from thermopile or pyroelectric IR detectors in gas analyzers and motion sensors. IC Role / Device Role / Timing Role: Transimpedance or DC-coupled voltage amplifier with ultra-low 1/f noise and high input impedance. Use Value: 0.3µV/°C typical offset drift ensures stable baseline over ambient temperature swings in uncooled IR systems. |
| Tape Head Preamplifier | Microvolt Threshold Detection |
Use Scenario: Boosting low-amplitude, wideband analog signals from magnetic tape playback heads before ADC sampling. IC Role / Device Role / Timing Role: High-slew, low-distortion gain stage operating at ±15V with 12.5MHz bandwidth. Use Value: 4.5V/µs slew rate prevents transient intermodulation distortion on fast tape head transients up to 20kHz. |
Use Scenario: Detecting precise voltage thresholds in medical ECG front-ends or precision comparator reference buffers. IC Role / Device Role / Timing Role: Precision buffer or gain stage feeding a comparator with <50µV hysteresis requirement. Use Value: 70µV max input offset ensures threshold accuracy within ±0.05mV at 1V reference level. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual low-noise op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OP270GP | Higher 5.0nV/√Hz max noise, lower 1.7V/µs slew rate, no 100% noise testing | Limited to ≤50kHz closed-loop bandwidth at G=100; less suitable for fast transient capture | Lower cost but requires design margining for noise and speed; not recommended for new designs demanding guaranteed specs |
| LT1028ACN8 | Lower 0.95nV/√Hz noise, higher 11.5MHz GBW, but single-channel only and PDIP-only packaging | Requires two devices and more board area for dual-channel function; lacks integrated dual matching | Superior noise performance where space and channel count allow; not pin-compatible or functionally equivalent |
Compared with OP270GP and LT1028ACN8, the LT1124CS8-1#TRPBF uniquely combines guaranteed low noise, high slew rate, dual-channel integration, and standard SO-8 pinout-making it optimal for space-constrained, high-accuracy dual-signal-path applications without layout redesign or performance compromise.
Availability
LT1124CS8-1#TRPBF is available at Aetrix Electronics and suitable for instrumentation amplifier modules, industrial sensor signal conditioners, and precision audio preamplifiers requiring stable component supply across production lifecycles.
Supply support for LT1124CS8-1#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 its legacy high-performance analog portfolio. Linear Technology was founded to deliver precision, low-noise, and high-speed analog ICs for demanding measurement and control applications.
The LT1124 series belongs to Linear's precision op amp product line, designed specifically for applications requiring microvolt-level accuracy, sub-3nV/√Hz noise, and robust DC performance in dual-channel configurations-targeting test equipment, medical instrumentation, and industrial sensing.
FAQ
What is the key differentiator of LT1124CS8-1#TRPBF versus standard SO-8 op amps like LM358?
The LT1124CS8-1#TRPBF provides 2.7nV/√Hz typical input voltage noise-over 10× lower than LM358's ~40nV/√Hz-and 4.5V/µs slew rate versus LM358's 0.6V/µs. Its 12.5MHz gain-bandwidth product and 70µV max offset enable precision DC-coupled amplification impossible with general-purpose op amps. The LT1124CS8-1#TRPBF also features 100% tested noise and slew rate per amplifier, ensuring guaranteed performance without binning.
Does LT1124CS8-1#TRPBF support ±5V operation?
Yes, LT1124CS8-1#TRPBF operates over ±3V to ±18V supply ranges. At ±5V, it maintains 2.7nV/√Hz typical noise, 4.5V/µs slew rate, and 12.5MHz gain-bandwidth product-verified in the datasheet's Electrical Characteristics table under VS = ±5V conditions. Supply current remains ≤2.75mA per amplifier, making it suitable for low-voltage precision systems.
Is LT1124CS8-1#TRPBF pin-compatible with OP-270?
Yes, LT1124CS8-1#TRPBF uses the standard SO-8 pinout (not the rotated pinout of non–"-1" variants), matching OP-270GP's pin assignment: Pin 1 = OUT A, Pin 2 = –IN A, Pin 3 = +IN A, Pin 4 = V–, Pin 5 = V+, Pin 6 = OUT B, Pin 7 = –IN B, Pin 8 = +IN B. This enables direct socket replacement without PCB modification.
What is the maximum output swing for LT1124CS8-1#TRPBF at ±15V supplies?
At ±15V supplies and RL ≥ 2kΩ, LT1124CS8-1#TRPBF delivers ±13V minimum output voltage swing-i.e., 26Vpp into 2kΩ. This is specified in the Absolute Maximum Ratings and Electrical Characteristics tables. Performance degrades slightly at heavier loads: ±12.5V is guaranteed at RL ≥ 2kΩ, confirming robust drive capability for precision analog stages.
How does LT1124CS8-1#TRPBF handle input overvoltage conditions?
LT1124CS8-1#TRPBF inputs include back-to-back protection diodes without current-limiting resistors-preserving low noise-but require external current limiting if differential input voltage exceeds ±1.4V. Per Absolute Maximum Ratings, differential input current must be limited to ±25mA. This design prioritizes noise performance over ruggedness, so external series resistors (e.g., 1kΩ) are recommended in high-risk signal paths.
LT1124CS8-1#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:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 4.5V/µs
- Gain Bandwidth Product:
- 12.5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 7 nA
- Voltage - Input Offset:
- 25 µV
- Current - Supply:
- 2.3mA (x2 Channels)
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 8 V
- Voltage - Supply Span (Max):
- 44 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LT1124CS8-1#TRPBF FAQ
1.How can I place an order for LT1124CS8-1#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1124CS8-1#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 LT1124CS8-1#TRPBF reliable?
The price and inventory of LT1124CS8-1#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1124CS8-1#TRPBF is usually 5 days.
3.What payment methods are accepted for LT1124CS8-1#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1124CS8-1#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1124CS8-1#TRPBF?
LT1124CS8-1#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1124CS8-1#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 LT1124CS8-1#TRPBF?
For technical support, including LT1124CS8-1#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1124CS8-1#TRPBF requirements.
6.How does Aetrix verify that LT1124CS8-1#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT1124CS8-1#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 LT1124CS8-1#TRPBF meets industry standards.
7.What is the process for return or replacement of LT1124CS8-1#TRPBF?
All LT1124CS8-1#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1124CS8-1#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 LT1124CS8-1#TRPBF part is unused and in its original packaging.
Return procedure for LT1124CS8-1#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LT1124CS8-1#TRPBF Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
