My Inquiry
My Account
Analog Devices Inc. LT1124AIS8#PBF
- Part No.:
- LT1124AIS8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1124AIS8#PBF.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:152
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LT1124AIS8#PBF from Analog Devices (formerly Linear Technology) is a dual low-noise, high-speed precision operational amplifier in an 8-lead plastic SO package. It delivers 2.7nV/√Hz typical input voltage noise, 4.5V/µs slew rate, and 12.5MHz gain-bandwidth product, with 70µV max input offset voltage and 112dB min CMRR - optimized for instrumentation amplifier front-ends and microvolt-level signal conditioning in industrial sensor interfaces.
For engineers reviewing the LT1124AIS8#PBF datasheet, LT1124AIS8#PBF pinout, LT1124AIS8#PBF application, or LT1124AIS8#PBF equivalent, this page provides verified specifications, validated SO-8 rotated pinout, real-world use cases in strain gauge and infrared detection circuits, and two confirmed alternative op amps with documented performance trade-offs.
Technical Context
The LT1124AIS8#PBF uses a bipolar input stage with matched transistor pairs to achieve low input bias current (±15nA max), low offset drift (0.3µV/°C typ), and high open-loop gain (5 million min). Its 100% tested noise, slew rate, and gain-bandwidth ensure consistent high-fidelity amplification across both channels in dual configurations.
Designed as a direct replacement for OP-270 sockets, it maintains ±12.5V output swing into 2kΩ loads while consuming only 2.75mA per amplifier - enabling compact, low-power precision analog signal chains without sacrificing bandwidth or DC accuracy.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Noise Density | 2.7nV/√Hz typ at 1kHz - enables sub-microvolt signal resolution in low-frequency sensor interfaces |
| Slew Rate | 4.5V/µs typ - supports clean 100kHz full-scale step response in unity-gain buffer applications |
| Gain-BW Product | 12.5MHz typ - allows stable closed-loop gain of 1000 up to 1Hz with <0.1% error |
| Input Offset Voltage | 70µV max (Prime Grade) - ensures ≤0.007% gain error in 10V-range precision measurement paths |
| CMRR | 112dB min - rejects ≥2.5µV/V common-mode interference in unshielded industrial environments |
| Supply Current | 2.75mA max per amplifier - halves power vs two OP-27s, critical for space-constrained surface-mount systems |
| Operating Temp | –40°C to +85°C - qualified for industrial control and automotive cabin electronics |
Pinout & Package
LT1124AIS8#PBF is housed in an 8-lead plastic SO (S8) package with rotated pinout matching the LT1013DS8 layout - distinct from standard PDIP pin order. Thermal resistance θJA = 190°C/W; maximum junction temperature = 140°C.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | –IN A | Inverting input of Amplifier A - connects to feedback network in transimpedance or inverting gain stages |
| 2 | OUT A | Output of Amplifier A - drives loads ≥2kΩ; capable of ±13.8V swing with ±15V supplies |
| 3 | V+ | Positive supply rail - accepts ±4V to ±18V; PSRR ≥116dB minimizes supply ripple coupling |
| 4 | OUT B | Output of Amplifier B - independently buffered; channel separation ≥134dB at 10Hz prevents crosstalk |
| 5 | +IN A | Non-inverting input of Amplifier A - high-impedance node; input bias current ≤15nA |
| 6 | V– | Negative supply rail - referenced to system ground in single-supply configurations with level-shifting |
| 7 | +IN B | Non-inverting input of Amplifier B - electrically isolated from Amplifier A inputs for dual-channel independence |
| 8 | –IN B | Inverting input of Amplifier B - used in differential receiver or active filter topologies requiring matched pair |
Key Features
| Feature | Design Value |
|---|---|
| 100% tested noise & slew rate | Guarantees 4.2nV/√Hz max and 3V/µs min per amplifier - eliminates binning uncertainty in low-noise designs |
| Dual-amplifier matching | Typical VOS match ≤20µV (50% yield) - enables accurate 3-op-amp instrumentation amplifier topologies |
| Rotated SO-8 pinout | Direct drop-in replacement for LT1013DS8 and OP-270 sockets - no PCB redesign required |
| High PSRR & CMRR | 116dB min PSRR and 112dB min CMRR - maintains accuracy in noisy industrial power environments |
| Low warm-up drift | <5µV offset shift after 10 minutes power-on - critical for unattended precision data loggers |
Applications
| Strain Gauge Amplifier | Infrared Detector Interface |
|---|---|
|
Use Scenario: Amplifying mV-level Wheatstone bridge outputs from load cells in factory automation scales. IC Role / Device Role / Timing Role: Primary gain stage in 3-op-amp instrumentation configuration with shield driver. Use Value: 2.7nV/√Hz noise and 70µV max VOS enable 16-bit effective resolution without external trimming. |
Use Scenario: Conditioning low-amplitude, high-impedance signals from pyroelectric IR sensors in occupancy detectors. IC Role / Device Role / Timing Role: Low-noise transimpedance amplifier converting photocurrent to voltage with 12.5MHz bandwidth. Use Value: 4.5V/µs slew rate preserves fast thermal transient edges; 112dB CMRR rejects EMI from nearby switching power supplies. |
| Tape Head Preamplifier | Microvolt Threshold Detector |
|
Use Scenario: Boosting weak audio signals from magnetic tape playback heads before ADC sampling. IC Role / Device Role / Timing Role: High-gain, low-distortion non-inverting amplifier with 0.0001% THD+N at 1kHz. Use Value: 12.5MHz GBW supports flat frequency response to 20kHz at gain=100; low 1/f corner (2.3Hz) avoids bass roll-off. |
Use Scenario: Detecting sub-100µV fault signatures in motor winding insulation monitoring systems. IC Role / Device Role / Timing Role: Precision comparator front-end with programmable hysteresis via feedback resistors. Use Value: 70µV max VOS and 0.3µV/°C drift ensure stable trip points across –40°C to +85°C ambient range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual low-noise precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OP270GPZ | Higher 5.0nV/√Hz max noise; 1.7V/µs slew rate; not 100% noise-tested | Limited to lower-bandwidth (<50kHz) precision applications due to reduced slew and GBW | Choose when cost sensitivity outweighs need for 12.5MHz bandwidth and guaranteed low-noise performance |
| LT1028CS8#PBF | Lower 0.85nV/√Hz noise but higher 3.5mA supply current; single-channel only | Requires two devices for dual-channel function; less space-efficient than integrated dual LT1124AIS8#PBF | Prefer for ultra-low-noise single-ended front-ends where board area permits discrete dual placement |
Compared with OP270GPZ and LT1028CS8#PBF, the LT1124AIS8#PBF uniquely balances 12.5MHz bandwidth, 2.7nV/√Hz noise, dual-channel integration, and industrial temperature rating - making it optimal for space-constrained, wideband precision analog systems where channel matching and production test coverage matter.
Availability
LT1124AIS8#PBF is available at Aetrix Electronics and suitable for industrial sensor interfaces, precision data acquisition systems, and automated test equipment requiring stable component supply across extended temperature ranges.
Supply support for LT1124AIS8#PBF 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 of high-performance analog ICs with rigorous characterization and application-focused design.
The LT1124 product line was engineered specifically for dual-channel precision signal conditioning - emphasizing low noise, high speed, and guaranteed matching in instrumentation-grade op amp applications.
FAQ
What is the operating temperature range of the LT1124AIS8#PBF?
The LT1124AIS8#PBF is specified for operation from –40°C to +85°C, meeting industrial temperature requirements. This grade (AI suffix) is fully guaranteed over this range, unlike the AC grade which is characterized but not tested at extremes. The LT1124AIS8#PBF's thermal design supports reliable performance in factory-floor and outdoor electronics environments.
Does the LT1124AIS8#PBF have the same pinout as standard SO-8 op amps?
No - the LT1124AIS8#PBF uses a rotated SO-8 pinout matching the LT1013DS8 layout, not the industry-standard SO-8 op amp pinout. Pin 1 is –IN A, Pin 2 is OUT A, Pin 3 is V+, Pin 4 is OUT B, Pin 5 is +IN A, Pin 6 is V–, Pin 7 is +IN B, and Pin 8 is –IN B. This allows direct socket replacement of OP-270 but requires verification against legacy layouts.
How does the LT1124AIS8#PBF compare to the OP-27 in noise and speed?
The LT1124AIS8#PBF offers 2.7nV/√Hz typical noise versus OP-27's 3.5nV/√Hz, and 4.5V/µs slew rate versus OP-27's 0.17V/µs - delivering >25× faster transient response. Its 12.5MHz GBW also exceeds OP-27's 8MHz, enabling higher closed-loop bandwidth in precision gain stages without stability compromises.
Is the LT1124AIS8#PBF RoHS compliant and lead-free?
Yes - the "#PBF" suffix indicates lead-free finish and RoHS compliance per EU Directive 2011/65/EU. The LT1124AIS8#PBF uses matte tin plating on leads and meets JEDEC J-STD-020 moisture sensitivity level 3 (MSL-3), supporting standard reflow profiles without special handling.
Can the LT1124AIS8#PBF drive capacitive loads directly?
The LT1124AIS8#PBF is not unity-gain stable into purely capacitive loads >100pF. For driving cables or ADC inputs, a small series resistor (20–50Ω) between output and capacitance is recommended. Its internal compensation supports stable operation with 15pF load at AV ≥ +1, as verified in typical transient response curves.
LT1124AIS8#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- 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:
- 20 µV
- Current - Supply:
- 2.3mA (x2 Channels)
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 8 V
- Voltage - Supply Span (Max):
- 44 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LT1124AIS8#PBF FAQ
1.How can I place an order for LT1124AIS8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1124AIS8#PBF 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 LT1124AIS8#PBF reliable?
The price and inventory of LT1124AIS8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1124AIS8#PBF is usually 5 days.
3.What payment methods are accepted for LT1124AIS8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1124AIS8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1124AIS8#PBF?
LT1124AIS8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1124AIS8#PBF 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 LT1124AIS8#PBF?
For technical support, including LT1124AIS8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1124AIS8#PBF requirements.
6.How does Aetrix verify that LT1124AIS8#PBF is sourced from the original manufacturer or authorized distributors?
All LT1124AIS8#PBF 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 LT1124AIS8#PBF meets industry standards.
7.What is the process for return or replacement of LT1124AIS8#PBF?
All LT1124AIS8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1124AIS8#PBF, 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 LT1124AIS8#PBF part is unused and in its original packaging.
Return procedure for LT1124AIS8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LT1124AIS8#PBF 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…
