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Analog Devices Inc. LTC1049CS8#TRPBF
- Part No.:
- LTC1049CS8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LTC1049CS8#TRPBF.pdf
- Description:
- IC OPAMP ZERO-DRIFT 1 CIRC 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:3,775
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Product details
Overview
LTC1049CS8#TRPBF from Analog Devices (formerly Linear Technology) is a low-power, zero-drift operational amplifier with integrated sample-and-hold capacitors, designed for precision DC-coupled signal conditioning in single-supply systems. It delivers 2 µV typical input offset voltage, 0.02 µV/°C drift, 3 µVP-P (0.1–10 Hz) input noise, and operates from 4.75 V to 16 V supply - enabling high-resolution thermocouple amplification and electronic scale front-ends.
For engineers reviewing the LTC1049CS8#TRPBF datasheet, LTC1049CS8#TRPBF pinout, LTC1049CS8#TRPBF application, or LTC1049CS8#TRPBF equivalent, key selection criteria include microvolt-level DC stability, 200 µA quiescent current, internal capacitor integration eliminating external hold caps, and SO-8 compatibility with legacy chopper-stabilized op amps like the LT1049 and ICL7652.
Technical Context
The LTC1049CS8#TRPBF employs a chopper-stabilized architecture with on-die sampling capacitors at Pins 1 and 8 (NC), eliminating external capacitor requirements and reducing board area and leakage-induced error. Its auto-zeroing loop corrects input offset and drift continuously at ~700 Hz, enabling stable DC gain without 1/f noise degradation.
It features rail-to-ground output swing, input common-mode range extending to V–, and single-supply operation down to 4.75 V - making it suitable for direct interfacing with grounded-sensor transducers. Overload recovery time is specified at 6 ms, significantly faster than discrete-capacitor chopper amplifiers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | ±2 µV typ - enables sub-10 µV system-level offset budgets in strain gauge bridges without trimming. |
| Offset Drift | ±0.02 µV/°C typ - ensures <1 µV total drift over 0–70°C ambient, critical for medical instrumentation calibration stability. |
| 0.1–10 Hz Input Noise | 3 µVP-P - supports 18+ bit effective resolution in slow-sampling data acquisition without external filtering. |
| Supply Current | 200 µA typ - allows battery-powered portable instruments to achieve >1-year runtime on AA cells. |
| Gain Bandwidth Product | 0.8 MHz - sufficient for closed-loop gains up to 100 with <0.1% gain error at 1 kHz in sensor signal chains. |
| Slew Rate | 0.8 V/µs - supports 10 V step response settling within 15 µs to 0.1%, adequate for multiplexed sensor scanning. |
| Operating Supply Range | 4.75 V to 16 V single supply - interfaces directly with 5 V logic rails and industrial 12 V systems without level-shifting. |
Pinout & Package
Package: 8-lead plastic SO (SO-8, S8 package), JEDEC MS-012AC, body size 3.9 mm × 4.9 mm, 1.27 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | No Connect (NC) | Internally unconnected; must be left floating or tied to ground per layout best practice to minimize thermal EMF. |
| 2 | Inverting Input (–IN) | High-impedance differential input node; guard ring routing required to maintain picoampere bias current integrity. |
| 3 | Non-inverting Input (+IN) | DC-coupled input accepting signals down to V– (ground in single-supply); sensitive to thermocouple EMFs at copper/leadframe junctions. |
| 4 | Negative Supply (V–) | Reference node for single-supply operation; tied to ground when using 4.75–16 V positive rail only. |
| 5 | No Connect (NC) | Internally unconnected; no routing or bypassing recommended. |
| 6 | Output (OUT) | Rail-to-ground capable output driving ≥10 kΩ loads; supports 0–4.2 V swing with 10 kΩ load on 5 V supply. |
| 7 | Positive Supply (V+) | Accepts 4.75–16 V; PSRR >110 dB ensures immunity to digital supply noise in mixed-signal PCBs. |
| 8 | No Connect (NC) | Internally unconnected; matches pinout of LT1049/ICL7652 for drop-in replacement without board modification. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Sample-and-Hold Capacitors | Eliminates two external 0.1–1 µF capacitors required by LT1049/ICL7652, reducing BOM count, board area, and leakage-induced offset error. |
| Zero-Drift Architecture with 700 Hz Sampling | Continuous auto-zeroing corrects input offset and 1/f noise without introducing switching artifacts into baseband signal path. |
| Input Common-Mode Range Includes Ground | Enables direct connection of grounded sensors (e.g., thermocouples, RTDs) without level-shifting circuitry or dual supplies. |
| Rail-to-Ground Output Swing | Delivers full 0–VCC output range into 10 kΩ, simplifying ADC interface design and maximizing dynamic range utilization. |
| Low 200 µA Quiescent Current | Permits use in always-on, battery-backed monitoring nodes where power budget is constrained to <1 mW per channel. |
Applications
| Thermocouple Amplifiers | Electronic Scales |
|---|---|
|
Use Scenario: Amplifying µV-level Type K thermocouple outputs across –40°C to +400°C with cold-junction compensation. IC Role / Device Role / Timing Role: Precision DC-coupled instrumentation amplifier front-end with ultra-low drift and noise. Use Value: Achieves ±0.5°C accuracy without manual calibration over temperature, enabled by 0.02 µV/°C drift and 3 µVP-P noise floor. |
Use Scenario: Conditioning mV-range outputs from load-cell Wheatstone bridges in portable weighing devices. IC Role / Device Role / Timing Role: Low-noise, low-drift gain stage preceding 24-bit sigma-delta ADC. Use Value: Enables 100,000:1 resolution (0.001% FS) with <1 µV offset contribution, meeting OIML Class III metrology requirements. |
| Medical Instrumentation | Strain Gauge Amplifiers |
|
Use Scenario: Biopotential signal conditioning in ECG/EMG front-ends requiring DC stability and minimal power. IC Role / Device Role / Timing Role: First-stage amplifier for high-impedance electrode inputs with guarded PCB layout. Use Value: Supports >10 GΩ input impedance integrity via picoampere bias current and guard-ring compatible pinout. |
Use Scenario: High-gain amplification of microstrain-induced bridge imbalances in structural health monitoring sensors. IC Role / Device Role / Timing Role: Low-drift, low-noise transducer interface IC operating from 5 V rail in industrial enclosures. Use Value: Maintains <0.01% linearity error over 85°C ambient due to <1 µV total drift, eliminating thermal recalibration cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar zero-drift operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8551ARZ | Higher 1.5 MHz GBW, 450 µA supply current, no internal capacitors - requires external 1 µF hold caps. | Better AC performance but higher power; less suitable for battery-powered thermocouple amps. | Select AD8551ARZ only when >1 MHz bandwidth is required and external capacitors are acceptable. |
| LTC2050CS8#TRPBF | Lower 175 µA supply current, same 2 µV offset, but 0.1–10 Hz noise = 1.5 µVP-P; pinout differs (Pin 1 = V–, Pin 4 = NC). | Superior noise and lower power, but not pin-compatible - requires PCB redesign. | Choose LTC2050CS8#TRPBF for new designs prioritizing lowest noise/power; retain LTC1049CS8#TRPBF for legacy SO-8 drop-in upgrades. |
Compared with AD8551ARZ and LTC2050CS8#TRPBF, the LTC1049CS8#TRPBF uniquely combines SO-8 pin compatibility with legacy chopper op amps, integrated hold capacitors, and 200 µA supply current - making it optimal for cost-sensitive, space-constrained, and retrofit precision analog designs.
Availability
LTC1049CS8#TRPBF is available at Aetrix Electronics and suitable for thermocouple amplifiers, electronic scales, and medical instrumentation requiring stable component supply, long-term calibration retention, and RoHS-compliant packaging.
Supply support for LTC1049CS8#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, datasheets, and application engineering for the LTC portfolio.
The LTC1049CS8#TRPBF belongs to Linear's precision zero-drift op amp family, engineered specifically for DC-accurate sensor signal conditioning in industrial, medical, and test equipment where microvolt stability and low power are mandatory.
FAQ
What is the maximum operating temperature range for the LTC1049CS8#TRPBF?
The LTC1049CS8#TRPBF is rated for operation from –40°C to +85°C ambient temperature. Its thermal shutdown threshold is 110°C (TJMAX), and junction-to-ambient thermal resistance is 130°C/W in the SO-8 package. This range supports deployment in industrial control cabinets and portable medical devices without forced cooling.
Does the LTC1049CS8#TRPBF require external capacitors for chopper stabilization?
No, the LTC1049CS8#TRPBF integrates both sample-and-hold capacitors on-die - Pins 1 and 8 are NC and require no external components. This eliminates capacitor leakage paths that degrade picoampere bias current and microvolt offset stability, distinguishing it from LT1049 and ICL7652 which mandate two external 0.1–1 µF capacitors.
Can the LTC1049CS8#TRPBF operate from a single 5 V supply?
Yes, the LTC1049CS8#TRPBF is fully specified for single-supply operation from 4.75 V to 16 V. With V– tied to ground and V+ at 5 V, it delivers rail-to-ground output swing (0–4.2 V into 10 kΩ) and accepts input signals down to ground - enabling direct interfacing with grounded thermocouples and bridge sensors without level-shifting circuitry.
Is the LTC1049CS8#TRPBF pin-compatible with the LT1049CN8?
Yes, the LTC1049CS8#TRPBF shares identical pin functions with the LT1049CN8 (PDIP-8) and LT1049CS8 variants. Pins 1, 5, and 8 are NC in all versions; –IN, +IN, V–, V+, and OUT occupy matching positions. This allows direct SO-8 replacement on existing PDIP footprints using adapter boards or re-layout, preserving legacy schematics and validation data.
What is the overload recovery time specification for the LTC1049CS8#TRPBF?
The LTC1049CS8#TRPBF recovers from output saturation in 6 ms typical - measured under RL = 10 kΩ, CL = 50 pF, and ±5 V supplies. This is up to 5× faster than discrete-capacitor chopper amplifiers and ensures rapid settling after transient overloads in data acquisition multiplexers or sensor fault conditions.
LTC1049CS8#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Zero-Drift
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 0.8V/µs
- Gain Bandwidth Product:
- 800 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 15 pA
- Voltage - Input Offset:
- 2 µV
- Current - Supply:
- 200µA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 4.75 V
- Voltage - Supply Span (Max):
- 16 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LTC1049CS8#TRPBF FAQ
1.How can I place an order for LTC1049CS8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1049CS8#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 LTC1049CS8#TRPBF reliable?
The price and inventory of LTC1049CS8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1049CS8#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC1049CS8#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1049CS8#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1049CS8#TRPBF?
LTC1049CS8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1049CS8#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 LTC1049CS8#TRPBF?
For technical support, including LTC1049CS8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1049CS8#TRPBF requirements.
6.How does Aetrix verify that LTC1049CS8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC1049CS8#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 LTC1049CS8#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC1049CS8#TRPBF?
All LTC1049CS8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1049CS8#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 LTC1049CS8#TRPBF part is unused and in its original packaging.
Return procedure for LTC1049CS8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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