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Analog Devices Inc. LTC1049CN8#PBF
- Part No.:
- LTC1049CN8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
LTC1049CN8#PBF.pdf
- Description:
- IC OPAMP ZERO-DRIFT 1 CIRC 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:476
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Product details
Overview
LTC1049CN8#PBF from Analog Devices (formerly Linear Technology) is a low-power, zero-drift operational amplifier in an 8-pin PDIP package, featuring integrated sample-and-hold capacitors, 2 µV typical input offset voltage, 0.02 µV/°C drift, and 200 µA supply current. It operates from ±2.375 V to ±8 V (or 4.75 V to 16 V single supply), supports rail-to-ground output swing, and targets precision DC-critical applications such as thermocouple amplification and electronic scales.
For engineers reviewing the LTC1049CN8#PBF datasheet, LTC1049CN8#PBF pinout, LTC1049CN8#PBF application, or LTC1049CN8#PBF equivalent, key selection criteria include ultralow offset drift, internal capacitor integration eliminating external hold capacitors, single-supply operation with ground-swing output, and compatibility with legacy chopper-stabilized op amp footprints like the LT1049/LT1050 family.
Technical Context
The LTC1049CN8#PBF uses a chopper-stabilized architecture with on-chip sampling capacitors at 700 Hz, enabling automatic offset correction without external components. Its internal auto-zero loop corrects both input offset voltage and drift continuously, delivering stable DC performance over temperature and time.
It features dual-stage gain architecture with high open-loop gain (160 dB typical), 0.8 MHz gain-bandwidth product, and 0.8 V/µs slew rate - optimized for low-frequency precision rather than wideband signal conditioning. Input common-mode range includes ground, and output swings to ground under 10 kΩ load, supporting true single-supply sensor interface designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | ±2 µV typical - enables sub-10 µV system-level offset budgets in strain gauge or thermocouple front-ends. |
| Offset Drift | ±0.02 µV/°C typical - ensures <100 nV drift over 0–70°C ambient, critical for medical instrumentation calibration stability. |
| Supply Current | 200 µA typical - allows battery-powered data loggers to operate >1 year on AA cells with 10-second sampling intervals. |
| Input Noise (0.1–10 Hz) | 3 µVP-P - supports 18-bit+ resolution in high-resolution data acquisition systems without external filtering. |
| Gain Bandwidth Product | 0.8 MHz - sufficient for closed-loop gains up to 100× at DC–8 kHz, matching bandwidth needs of industrial 4–20 mA transmitters. |
| Output Swing (RL = 10 kΩ) | –4.6 V / +3.2 V (±5 V supply) - delivers ground-referenced output compatible with ADCs requiring 0–5 V input range. |
| Overload Recovery Time | 6 ms typical - recovers from saturation faster than discrete-capacitor chopper amps, reducing settling delay in multiplexed sensor systems. |
Pinout & Package
Package: 8-lead plastic dual in-line (PDIP), N8 package per LTC DWG #05-08-1510; 0.300-inch width, through-hole mounting.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | No Connect (NC) | Internally unconnected; must be left floating or tied to ground only if required by board layout noise control. |
| 2 | Inverting Input (–IN) | Differential input node; sensitive to thermal EMF - requires guarded trace routing and matched metal paths. |
| 3 | Noninverting Input (+IN) | Differential input node; referenced to ground in single-supply configurations; guard ring should tie here in noninverting circuits. |
| 4 | Negative Supply (V–) | Connect to ground (single supply) or negative rail; input common-mode extends to V–, enabling true ground-sensing. |
| 5 | No Connect (NC) | Internally unconnected; no electrical function - avoid routing signals or power near this pin. |
| 6 | Output (OUT) | Class AB output stage; drives 10 kΩ load to within 0.4 V of rails; limited short-circuit current protects against sustained overload. |
| 7 | Positive Supply (V+) | Accepts 4.75–16 V (single) or ±2.375–±8 V (dual); PSRR ≥110 dB ensures immunity to supply ripple in noisy industrial environments. |
| 8 | No Connect (NC) | Internally unconnected; same handling as Pins 1 and 5 - no external connection required. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Sampling Capacitors | Eliminates two external 0.1–1 µF hold capacitors required by LT1049/LT1050, reducing BOM count and PCB area by >25 mm². |
| Ground-Swing Output | Drives to 0 V with 10 kΩ load - enables direct interfacing to SAR ADCs with 0–VREF input ranges without level-shifting circuitry. |
| Single-Supply Operation | Functional from 4.75 V to 16 V - supports direct connection to 5 V logic rails and industrial 12 V bus systems without LDO pre-regulation. |
| Pin Compatibility with LT1049/LT1050 | Direct drop-in replacement for 8-pin PDIP versions of LT1049 and LT1050; unused pins (1, 5, 8) match footprint while removing external cap dependencies. |
| Low Thermal EMF Sensitivity Design | Specified with attention to copper/kovar junction effects - package-induced warm-up drift dominates offset spec, guiding thermal layout best practices. |
Applications
| Thermocouple Amplifiers | Electronic Scales |
|---|---|
|
Use Scenario: Amplifying microvolt-level Type K thermocouple outputs (≈41 µV/°C) across –40°C to +400°C range with cold-junction compensation. IC Role / Device Role / Timing Role: Primary DC-stable gain stage with integrated offset correction, rejecting thermocouple self-heating and ambient drift. Use Value: Achieves <±0.5°C accuracy without manual recalibration over 85°C ambient span, enabled by 0.02 µV/°C drift and 3 µVP-P 0.1–10 Hz noise. |
Use Scenario: Conditioning mV-level outputs from 350 Ω strain gauges in platform scales and load cells with 10,000:1 dynamic range. IC Role / Device Role / Timing Role: Low-drift, low-noise instrumentation front-end in Wheatstone bridge configurations with 1–100× gain. Use Value: Enables 20-bit effective resolution via 2 µV offset and 200 µA quiescent current - supports battery-powered portable weighing devices. |
| Medical Instrumentation | High Resolution Data Acquisition |
|
Use Scenario: Biopotential signal conditioning in ECG/EEG front-ends where electrode half-cell potentials demand sub-µV baseline stability. IC Role / Device Role / Timing Role: First-stage amplifier with rail-to-ground output driving anti-aliasing filters and 24-bit delta-sigma ADCs. Use Value: Delivers <1 µV total input-referred drift over 8-hour clinical session, meeting IEC 60601-2-27 low-frequency accuracy requirements. |
Use Scenario: Precision DC measurement in automated test equipment capturing slow-varying sensor outputs (e.g., pressure, humidity) at 10 SPS. IC Role / Device Role / Timing Role: Zero-drift buffer and gain stage preceding multiplexed 24-bit ADC, minimizing system offset accumulation. Use Value: Reduces calibration frequency from daily to quarterly via 50 nV/√month long-term drift, verified per JEDEC JESD22-A117. |
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 supply current (420 µA), wider supply range (2.7–6 V), no internal capacitors - requires external 100 nF hold caps. | Better suited for 3.3 V systems; lacks LTC1049CN8#PBF's ground-swing output and 4.75 V minimum single-supply rating. | Select AD8551ARZ when operating below 4.75 V or needing higher CMRR (>130 dB) at cost of added external components and power. |
| LTC2050CS8#PBF | Lower offset (1 µV typ), lower noise (1.5 µVP-P), but requires external capacitors and has slower overload recovery (12 ms). | Superior for ultra-low-noise 24-bit DAQ; unsuitable for space-constrained layouts where LTC1049CN8#PBF's integrated caps save board area. | Choose LTC2050CS8#PBF only when 1 µV offset and sub-2 µVP-P noise outweigh layout simplicity and 6 ms recovery in final design. |
Compared with AD8551ARZ and LTC2050CS8#PBF, the LTC1049CN8#PBF uniquely combines internal capacitor integration, guaranteed 4.75 V single-supply operation, and 6 ms overload recovery - making it optimal for cost-sensitive, space-constrained industrial sensor nodes where external component count and supply margin are critical.
Availability
LTC1049CN8#PBF is available at Aetrix Electronics and suitable for thermocouple amplifiers, electronic scales, and medical instrumentation requiring stable component supply, long-lifecycle support, and RoHS-compliant through-hole packaging.
Supply support for LTC1049CN8#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 technical and manufacturing continuity for legacy Linear precision analog products.
The LTC1049CN8#PBF belongs to Linear's zero-drift op amp product line, designed specifically for DC-precision applications demanding nanovolt-level stability, low power, and minimal external components in industrial and medical instrumentation.
FAQ
What is the maximum operating temperature range for the LTC1049CN8#PBF?
The LTC1049CN8#PBF is rated for an operating temperature range of –40°C to +85°C, with storage up to +150°C. Its internal warm-up drift - driven by copper/kovar package junctions - stabilizes within 0.5–3 minutes depending on ambient conditions, and the specified offset drift of ±0.1 µV/°C max applies across this full range.
Does the LTC1049CN8#PBF require external capacitors for chopper stabilization?
No, the LTC1049CN8#PBF integrates both sample-and-hold capacitors on-die, eliminating the need for external 0.1–1 µF capacitors required by predecessors like the LT1049. Pins 1, 5, and 8 are NC, confirming no external capacitor connections are necessary - simplifying layout and improving reliability in high-vibration environments.
Can the LTC1049CN8#PBF operate from a single 5 V supply?
Yes, the LTC1049CN8#PBF supports true single-supply operation from 4.75 V to 16 V. With V– tied to ground and V+ at 5 V, its input common-mode range includes ground and output swings to 0 V (within 0.4 V under 10 kΩ load), enabling direct interfacing with 0–5 V ADC inputs without level-shifting circuitry.
What is the overload recovery time of the LTC1049CN8#PBF, and why does it matter?
The LTC1049CN8#PBF recovers from output saturation in 6 ms typical - significantly faster than chopper amplifiers using external capacitors (often >20 ms). This matters in multiplexed sensor systems where rapid channel switching demands fast settling; 6 ms recovery enables ≤100 Hz effective sampling rate without residual offset error accumulation.
Is the LTC1049CN8#PBF pin-compatible with the LT1049CN8?
Yes, the LTC1049CN8#PBF is pin-compatible with the LT1049CN8 in the 8-pin PDIP package. Both share identical pinouts (NC, –IN, +IN, V–, NC, OUT, V+, NC), and the LTC1049CN8#PBF can replace LT1049CN8 directly - even with legacy external capacitors present on-board - since Pins 1 and 8 are unused and internally disconnected.
LTC1049CN8#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
LTC1049CN8#PBF FAQ
1.How can I place an order for LTC1049CN8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1049CN8#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 LTC1049CN8#PBF reliable?
The price and inventory of LTC1049CN8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1049CN8#PBF is usually 5 days.
3.What payment methods are accepted for LTC1049CN8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1049CN8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1049CN8#PBF?
LTC1049CN8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1049CN8#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 LTC1049CN8#PBF?
For technical support, including LTC1049CN8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1049CN8#PBF requirements.
6.How does Aetrix verify that LTC1049CN8#PBF is sourced from the original manufacturer or authorized distributors?
All LTC1049CN8#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 LTC1049CN8#PBF meets industry standards.
7.What is the process for return or replacement of LTC1049CN8#PBF?
All LTC1049CN8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1049CN8#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 LTC1049CN8#PBF part is unused and in its original packaging.
Return procedure for LTC1049CN8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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