My Inquiry
My Account
Analog Devices Inc. LT1674IS#PBF
- Part No.:
- LT1674IS#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1674IS#PBF.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,993
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LT1674IS#PBF from Analog Devices (formerly Linear Technology) is a quad-channel, ultralow-power, precision rail-to-rail input and output operational amplifier with Over-The-Top™ input capability. It delivers ≤2 µA supply current per amplifier, 375 µV max input offset voltage, 12 kHz gain bandwidth product, and operates from 2.2 V to 36 V single supply or ±15 V dual supply. It is used in remote sensor amplifiers and micropower filters where precision, low power, and input operation above V+ are critical.
For engineers reviewing the LT1674IS#PBF datasheet, LT1674IS#PBF pinout, LT1674IS#PBF application, or LT1674IS#PBF equivalent, key selection criteria include guaranteed –40°C to +85°C operation, rail-to-rail I/O swing, reverse battery protection to –18 V, and decompensated stability at AV ≥ 5 - all validated for the SO-14 package variant.
Technical Context
The LT1674IS#PBF implements a three-stage architecture: a rail-to-rail input stage with dual differential pairs enabling Over-The-Top operation (inputs up to 36 V above V–), a folded cascode second stage delivering high open-loop gain (≥100 V/mV into 100 kΩ), and a common-emitter rail-to-rail output stage sourcing/sinking 500 µA. Its input bias current remains ≤250 pA and offset current ≤20 pA across the full temperature range.
It is decompensated for minimum gain of 5, requiring external compensation for unity-gain use. Common-mode rejection (90 dB) and power-supply rejection (90 dB) are maintained over 2.2 V to 36 V supply and –0.3 V to 36 V input common-mode range, supporting robust performance in battery-powered industrial sensing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current per Amp | ≤2 µA - enables multi-year battery life in remote sensor nodes |
| Input Offset Voltage | ≤375 µV max - ensures <0.1% error in 12-bit precision signal chains |
| Gain Bandwidth Product | 12 kHz - supports stable filtering and DC-coupled instrumentation at low frequency |
| Input Common-Mode Range | –0.3 V to 36 V - allows direct interfacing to sensors operating above V+ |
| Output Swing (RL = 100kΩ) | V– + 210 mV / V+ – 320 mV - delivers true rail-to-rail dynamic range under load |
| Reverse Battery Protection | –18 V min - eliminates need for external series diode in automotive/solar systems |
| Operating Temperature | –40°C to +85°C - qualified for industrial and outdoor embedded applications |
Pinout & Package
LT1674IS#PBF is housed in a 14-lead plastic SO (Small Outline) package (S package), 0.150-inch body width, with standard quad op amp pinout and exposed pad not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT A) | Amplifier A output | Capable of sourcing/sinking 500 µA while maintaining rail-to-rail swing |
| 2 (–IN A) | Inverting input A | High-impedance node (250 pA IB); supports Over-The-Top operation |
| 3 (+IN A) | Non-inverting input A | Same Over-The-Top capability as Pin 2; matched offset current (≤20 pA) |
| 4 (V+) | Positive supply | Accepts 2.2 V to 36 V; reverse-battery protected to –18 V |
| 5 (+IN B) | Non-inverting input B | Electrically identical to Pin 3; fully independent channel |
| 6 (–IN B) | Inverting input B | Identical specs to Pin 2; no crosstalk with Channel A |
| 7 (OUT B) | Amplifier B output | Functionally identical to Pin 1; shares V+ and V– rails |
| 8 (OUT D) | Amplifier D output | Final output in quad configuration; same drive strength and swing |
| 9 (–IN D) | Inverting input D | Matches Pins 2 and 6; validated for –40°C to +85°C operation |
| 10 (V–) | Negative supply | Reference for all four amplifiers; inputs operate down to –0.3 V |
| 11 (+IN C) | Non-inverting input C | Third channel input; offset drift ≤0.4 µV/°C typical |
| 12 (–IN C) | Inverting input C | Matched pair with Pin 11; supports high-Z megohm source resistors |
| 13 (OUT C) | Amplifier C output | Provides fourth independent output; same noise (4 µVP-P, 0.1–10 Hz) |
| 14 (NC) | No connect | Not internally bonded; must be left unconnected or grounded per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Over-The-Top™ Input Architecture | Enables sensor interface where input exceeds V+ (e.g., 24 V sensor on 5 V rail), eliminating level-shifting circuitry |
| Rail-to-Rail Input and Output | Supports full dynamic range utilization in single-supply systems (e.g., 3 V battery), maximizing ADC resolution |
| 2 µA Max Supply Current per Amplifier | Reduces total quiescent power to 8 µA for quad channel - critical for energy-harvesting and coin-cell designs |
| 375 µV Max Input Offset Voltage | Minimizes DC error in precision transducer conditioning without trimming or calibration |
| Reverse Battery Protection to –18 V | Allows direct connection to automotive or solar battery inputs without external protection diodes or FETs |
Applications
| Battery-Powered Sensor Node | Remote Photodiode Amplifier |
|---|---|
Use Scenario: Four-channel analog front-end for wireless environmental sensor array powered by CR2032 coin cell. IC Role / Device Role / Timing Role: LT1674IS#PBF conditions thermistor, humidity, pressure, and gas sensor outputs with simultaneous rail-to-rail buffering and filtering. Use Value: 8 µA total quiescent current extends battery life beyond 5 years; Over-The-Top inputs accept sensor signals up to 3.3 V on 3 V rail. | Use Scenario: Low-light optical detection in portable medical pulse oximeter using 880 nm IR photodiode. IC Role / Device Role / Timing Role: Transimpedance amplifier (TIA) with 10 MΩ feedback resistor, configured as Channel A of LT1674IS#PBF. Use Value: 4 µVP-P (0.1–10 Hz) input noise and 250 pA input bias enable sub-nA photocurrent resolution without cooling. |
| Micropower Instrumentation Filter | High-Impedance Electrochemical Sensor Interface |
Use Scenario: 1.7 kHz second-order active low-pass filter in handheld gas analyzer with 3 V supply. IC Role / Device Role / Timing Role: Dual-channel LT1674IS#PBF configured as Sallen-Key topology with AV = 5 stability. Use Value: 12 kHz GBW and decompensated design ensure phase margin >60° at 1.7 kHz; rail-to-rail swing preserves SNR. | Use Scenario: pH electrode buffer and reference electrode amplifier in portable water quality tester. IC Role / Device Role / Timing Role: Quad LT1674IS#PBF provides buffered electrode inputs, reference generation, and ratiometric ADC driver. Use Value: 20 pA max input offset current prevents polarization errors in >100 MΩ electrode circuits; CMRR ≥90 dB rejects EMI. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad micropower precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1496CS#PBF | Unity-gain stable; higher IS = 1.5 µA; same VOS (375 µV max); SO-14 package | Preferred when AV = 1 required (e.g., voltage follower); less suitable for AV ≥ 5 filter stages | Select LT1496CS#PBF only if unity-gain stability is mandatory and 0.5 µA higher supply current is acceptable. |
| OPA2333PAIDR | Zero-drift architecture; IS = 17 µA; VOS = 2 µV max; SO-8 (dual only); requires external VREF for rail-to-rail output | Better DC accuracy but 8.5× higher supply current; dual-channel only; no Over-The-Top capability | Choose OPA2333PAIDR only for ultra-low drift (<0.02 µV/°C) in low-frequency DC applications where power is secondary. |
Compared with LT1496CS#PBF and OPA2333PAIDR, the LT1674IS#PBF uniquely combines Over-The-Top input operation, quad-channel integration in SO-14, and 2 µA/channel supply current - making it irreplaceable for space-constrained, battery-operated sensor systems requiring input voltage headroom above V+.
Availability
LT1674IS#PBF is available at Aetrix Electronics and suitable for battery-powered sensor nodes, remote photodiode amplifiers, and micropower instrumentation filters requiring stable component supply across industrial temperature ranges.
Supply support for LT1674IS#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 full product support, manufacturing, and qualification for legacy Linear op amps including the LT1674 family.
The LT1674 series was designed specifically for ultralow-power, high-precision analog signal conditioning in harsh environments - emphasizing Over-The-Top input operation, reverse-battery resilience, and rail-to-rail performance at sub-2 µA supply current.
FAQ
What is the maximum supply voltage rating for LT1674IS#PBF?
The LT1674IS#PBF has an absolute maximum total supply voltage (V+ to V–) of 36 V. It operates over a recommended supply range of 2.2 V to 36 V single supply or ±2.5 V to ±15 V dual supply. Exceeding 36 V risks permanent damage, and reverse supply voltage is rated to –18 V with input/output current limiting.
Does LT1674IS#PBF support rail-to-rail input when powered from a 3 V single supply?
Yes. The LT1674IS#PBF guarantees rail-to-rail input operation from –0.3 V to 36 V, meaning with a 3 V supply (V– = 0 V, V+ = 3 V), inputs function correctly from –0.3 V to 3.0 V. This includes Over-The-Top capability: inputs may exceed V+ (e.g., 3.3 V on 3 V rail) without damage or phase reversal.
Can LT1674IS#PBF be used in unity-gain stable configurations?
No. The LT1674IS#PBF is decompensated for minimum closed-loop gain of 5. Attempting unity-gain operation will cause instability and oscillation. For unity-gain applications, use the pin-compatible LT1496CS#PBF - the unity-gain stable version of the same family - which shares identical SO-14 packaging and core specifications except compensation.
What is the guaranteed input offset voltage specification for LT1674IS#PBF over temperature?
The LT1674IS#PBF guarantees a maximum input offset voltage of 575 µV over the full –40°C to +85°C operating temperature range (I-grade). At 25°C, the limit is tighter: 375 µV max. The typical offset drift is 0.4 µV/°C, ensuring predictable error growth in wide-temperature deployments.
Is LT1674IS#PBF pin-compatible with other packages in the LT1674 family?
No. The LT1674IS#PBF uses the 14-lead SO (S) package with standard quad op amp pinout. The LT1674CN (PDIP-14) shares identical pinout and electrical specs, but LT1674CS (SO-14) and LT1674IN (PDIP-14) differ only in temperature grade - not pinout. There is no pin-compatible 8-pin or MSOP variant; LT1672/LT1673 are single/dual counterparts in different packages.
LT1674IS#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LT®
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.005V/µs
- Gain Bandwidth Product:
- 12 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 25 pA
- Voltage - Input Offset:
- 200 µV
- Current - Supply:
- 1.9µA (x4 Channels)
- Current - Output / Channel:
- 1.5 mA
- Voltage - Supply Span (Min):
- 2.2 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SO
LT1674IS#PBF FAQ
1.How can I place an order for LT1674IS#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1674IS#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 LT1674IS#PBF reliable?
The price and inventory of LT1674IS#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1674IS#PBF is usually 5 days.
3.What payment methods are accepted for LT1674IS#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1674IS#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1674IS#PBF?
LT1674IS#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1674IS#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 LT1674IS#PBF?
For technical support, including LT1674IS#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1674IS#PBF requirements.
6.How does Aetrix verify that LT1674IS#PBF is sourced from the original manufacturer or authorized distributors?
All LT1674IS#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 LT1674IS#PBF meets industry standards.
7.What is the process for return or replacement of LT1674IS#PBF?
All LT1674IS#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1674IS#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 LT1674IS#PBF part is unused and in its original packaging.
Return procedure for LT1674IS#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LT1674IS#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…
