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Analog Devices Inc. LT1882CS#PBF
- Part No.:
- LT1882CS#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1882CS#PBF.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:974
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Product details
Overview
LT1882CS#PBF from Analog Devices (formerly Linear Technology) is a quad rail-to-rail output, picoamp-input precision operational amplifier optimized for high-accuracy signal conditioning in low-voltage and battery-powered systems. It delivers 50 μV max input offset voltage, 200 pA max input bias current, rail-to-rail output swing within 40 mV of V– and 220 mV of V+, operates from 2.7 V to 36 V total supply, and drives up to 1000 pF capacitive loads in unity-gain configuration - ideal for thermocouple amplifiers and photo current sensing.
For engineers reviewing the LT1882CS#PBF datasheet, LT1882CS#PBF pinout, LT1882CS#PBF application, or LT1882CS#PBF equivalent, key selection considerations include its guaranteed 0°C to 70°C operating range, 14-pin SO package, matched amplifier performance (ΔVOS ≤ 42 μV), low 1.0 MHz gain-bandwidth product, and stability with high-capacitance loads without external compensation.
Technical Context
The LT1882CS#PBF implements a precision bipolar input stage with on-chip input bias current cancellation, enabling ultralow 200 pA max IB while maintaining 0.8 μV/°C max offset drift. Its rail-to-rail output stage uses complementary common-emitter followers to achieve 40 mV low-side and 220 mV high-side saturation voltages at 1 mA load.
Designed for single-supply operation down to 2.7 V, it supports input common-mode range from V– + 1.0 V to V+ – 1.0 V and exhibits 120 dB channel separation at 1 kHz - critical for multi-channel instrumentation where crosstalk must be minimized across all four amplifiers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | ≤50 μV max (C grade, 0°C to 70°C) - enables direct interfacing with 16-bit DACs without trimming. |
| Input Bias Current | ≤200 pA max - preserves accuracy with >1 MΩ sensor sources and feedback networks. |
| Supply Range | 2.7 V to 36 V total - supports single 3.3 V/5 V or split ±15 V rails without redesign. |
| Output Swing | Within 40 mV of V– and 220 mV of V+ at 1 mA - maximizes dynamic range in low-voltage data acquisition. |
| Capacitive Load Drive | Stable with up to 1000 pF at unity gain - eliminates need for isolation resistors in sensor buffer applications. |
| Gain-Bandwidth Product | 1.0 MHz typical - balances speed and precision for DC-critical, sub-100 kHz signal paths. |
| Operating Temperature | 0°C to 70°C - qualified for commercial-grade embedded control and test equipment. |
Pinout & Package
LT1882CS#PBF is housed in a 14-lead plastic SO (Small Outline) package with standard quad op amp pinout and θJA = 160°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - connects directly to downstream ADC input or filter network. |
| 2 | –IN A | Inverting input of Amp A - requires guard ring routing to minimize leakage errors. |
| 3 | +IN A | Noninverting input of Amp A - matched impedance not required due to internal bias cancellation. |
| 4 | V+ | Positive supply rail - decoupling capacitor (0.1 μF) required within 1 cm of pin. |
| 5 | +IN B | Noninverting input of Amp B - shares V+ rail with other amplifiers; layout symmetry critical for matching. |
| 6 | –IN B | Inverting input of Amp B - routed adjacent to Pin 5 to minimize thermal gradients. |
| 7 | OUT B | Amplifier B output - electrically isolated from OUT A by package substrate for low crosstalk. |
| 8 | OUT D | Amplifier D output - pin 8 is physically opposite pin 1 to reduce inter-amplifier coupling. |
| 9 | –IN D | Inverting input of Amp D - referenced to same V– as all channels; no phase reversal beyond CMR limits. |
| 10 | +IN D | Noninverting input of Amp D - maintains <42 μV offset match vs. Amp A per datasheet Note 7. |
| 11 | V– | Negative supply rail - return path for all four amplifiers; star grounding recommended. |
| 12 | +IN C | Noninverting input of Amp C - positioned between V– and –IN C for thermal symmetry. |
| 13 | –IN C | Inverting input of Amp C - paired with Pin 12 to preserve matching under temperature gradient. |
| 14 | OUT C | Amplifier C output - completes quad configuration; identical AC/DC specs to OUT A/B/D. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers full-scale signal headroom in 3.3 V or 5 V single-supply systems without level-shifting circuitry. |
| Ultralow input bias current | 200 pA max enables accurate amplification of high-impedance sources like photodiodes and pH electrodes. |
| Matched amplifier performance | ≤42 μV offset match between any two amps ensures consistent gain/offset across multi-channel sensor arrays. |
| High capacitive load tolerance | Stable with 1000 pF at unity gain - eliminates external series resistors in long-cable or PCB trace buffering. |
| Wide supply voltage range | 2.7 V to 36 V operation supports both energy-harvesting nodes and industrial ±15 V signal chains. |
Applications
| Thermocouple Amplifier | Photo Current Amplifier |
|---|---|
Use Scenario: Amplifying microvolt-level Seebeck voltage from K-type thermocouples in HVAC controllers. IC Role / Device Role / Timing Role: Precision DC-coupled instrumentation amplifier front-end with cold-junction compensation interface. Use Value: 50 μV max VOS and 0.8 μV/°C drift ensure <0.5°C measurement error over 0°C–70°C ambient range. | Use Scenario: Converting nanoamp photocurrent from optical smoke detectors into measurable voltage. IC Role / Device Role / Timing Role: Transimpedance amplifier with guarded input and low-noise feedback network. Use Value: 200 pA max IB prevents signal loss across >10 MΩ feedback resistors used for 1 nA–10 μA range scaling. |
| Bridge Transducer Conditioner | Battery-Powered Data Logger |
Use Scenario: Conditioning mV-level outputs from strain-gauge load cells in portable weighing scales. IC Role / Device Role / Timing Role: Low-drift, low-power signal conditioner with programmable gain and offset nulling. Use Value: Matched ΔVOS ≤ 42 μV across all four amps enables simultaneous excitation and ratiometric measurement of dual bridge arms. | Use Scenario: Signal conditioning for multi-sensor environmental monitoring in solar-charged IoT nodes. IC Role / Device Role / Timing Role: Quad-channel analog front-end powering ADC inputs while minimizing quiescent current. Use Value: 0.65 mA per amplifier at 3 V supply extends battery life beyond 5 years in 1-sample-per-minute logging mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1882IS#PBF | Same die, extended –40°C to 85°C operating range; higher VOS (80 μV max) and IB (500 pA max) specs. | Required for industrial environments with wider ambient swings; not drop-in for 0°C–70°C commercial designs. | Select LT1882IS#PBF only when full –40°C to 85°C qualification is mandatory; LT1882CS#PBF offers tighter DC specs at lower cost for commercial use. |
| OPA2188AIDR | Zero-drift architecture; 0.003 μV/°C drift vs. 0.8 μV/°C; higher 2 MHz GBW but 1.2 mA supply current per amp. | Better for <0.01°C thermal stability over wide temperature spans; less suitable for ultra-low-power battery operation. | Choose OPA2188AIDR when sub-microvolt drift dominates system error budget; LT1882CS#PBF remains optimal for cost-sensitive, moderate-drift applications with strict IQ limits. |
Compared with LT1882IS#PBF, LT1882CS#PBF provides superior DC precision (50 μV vs. 80 μV VOS) at lower cost for commercial-temperature applications, while OPA2188AIDR trades higher power for near-zero drift - making LT1882CS#PBF the balanced choice for battery-powered instrumentation requiring picoamp input fidelity without zero-drift complexity.
Availability
LT1882CS#PBF is available at Aetrix Electronics and suitable for thermocouple amplifiers, photo current amplifiers, and bridge transducer conditioners requiring stable component supply across commercial temperature ranges.
Supply support for LT1882CS#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 precision analog portfolio with rigorous testing and long-term product commitments.
The LT1882 belongs to Linear's rail-to-rail precision op amp family, engineered for high-accuracy DC signal conditioning in sensor interfaces, medical devices, and test equipment where input bias current and offset voltage dominate error budgets.
FAQ
What is the maximum capacitive load the LT1882CS#PBF can drive stably in unity-gain configuration?
The LT1882CS#PBF is specified to drive up to 1000 pF capacitive loads stably in unity-gain follower configuration without external compensation, as confirmed in the Electrical Characteristics table and Typical Performance Characteristics (Figure G41). This capability eliminates the need for series isolation resistors in sensor buffer and long-trace applications, preserving signal integrity and simplifying layout.
Does the LT1882CS#PBF support true single-supply operation below 5 V?
Yes, the LT1882CS#PBF operates down to 2.7 V total supply voltage and is fully specified from 5 V to ±15 V. At 3.3 V single supply, it maintains rail-to-rail output swing (within 40 mV of ground and 220 mV of 3.3 V), 50 μV max input offset, and 200 pA max input bias current - making it suitable for modern low-voltage embedded systems.
How does the input bias current matching work across the four amplifiers in the LT1882CS#PBF?
Per datasheet Note 7, input bias current matching in the LT1882CS#PBF is defined as the difference between amplifiers A and D, and between B and C. The device guarantees ΔIB+ ≤ 250 pA (0°C–70°C) for the C grade, ensuring consistent DC error contribution across channels in multi-amplifier configurations such as dual instrumentation amplifiers or quad sensor conditioners.
What is the input common-mode voltage range for the LT1882CS#PBF?
The LT1882CS#PBF has an input common-mode range of V– + 1.0 V to V+ – 1.0 V at 25°C, as specified in the Electrical Characteristics table. Exceeding this range causes gain reduction but no phase reversal. For a 5 V single supply (V– = 0 V, V+ = 5 V), usable input range is 1.0 V to 4.0 V - requiring level-shifting for signals near ground or rail.
Is the LT1882CS#PBF pin-compatible with other quad op amps in 14-pin SO packages?
No - the LT1882CS#PBF uses a nonstandard pinout optimized for thermal and layout symmetry: V+ is on Pin 4, V– on Pin 11, and amplifier pairs are interleaved (A/B on left, C/D on right). It is not pin-compatible with industry-standard quad op amps like LM324 or TL084; PCB layout must follow the exact pin mapping shown in the datasheet's PIN CONFIGURATION diagram.
LT1882CS#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:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.35V/µs
- Gain Bandwidth Product:
- 1 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 150 pA
- Voltage - Input Offset:
- 30 µV
- Current - Supply:
- 650µA (x4 Channels)
- Current - Output / Channel:
- 40 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SO
LT1882CS#PBF FAQ
1.How can I place an order for LT1882CS#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1882CS#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 LT1882CS#PBF reliable?
The price and inventory of LT1882CS#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1882CS#PBF is usually 5 days.
3.What payment methods are accepted for LT1882CS#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1882CS#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1882CS#PBF?
LT1882CS#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1882CS#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 LT1882CS#PBF?
For technical support, including LT1882CS#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1882CS#PBF requirements.
6.How does Aetrix verify that LT1882CS#PBF is sourced from the original manufacturer or authorized distributors?
All LT1882CS#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 LT1882CS#PBF meets industry standards.
7.What is the process for return or replacement of LT1882CS#PBF?
All LT1882CS#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1882CS#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 LT1882CS#PBF part is unused and in its original packaging.
Return procedure for LT1882CS#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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