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Analog Devices Inc. LTC1050HS8#PBF
- Part No.:
- LTC1050HS8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LTC1050HS8#PBF.pdf
- Description:
- IC OPAMP ZERO-DRIFT 1 CIRC 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,647
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Product details
Overview
LTC1050HS8#PBF from Analog Devices (formerly Linear Technology) is a precision zero-drift operational amplifier with integrated sample-and-hold capacitors, designed for ultra-low-offset DC-critical signal conditioning. It delivers 5µV max input offset voltage, 0.05µV/°C max drift, 1.6µVP-P (0.1Hz–10Hz) noise, and 2.5MHz gain-bandwidth product at 1mA supply current - enabling thermocouple amplification, strain gauge interfaces, and medical instrumentation requiring sub-µV stability.
For engineers reviewing the LTC1050HS8#PBF datasheet, LTC1050HS8#PBF pinout, LTC1050HS8#PBF application, or LTC1050HS8#PBF equivalent, key selection criteria include guaranteed CMRR >120dB at DC and 60Hz, single-supply operation down to 4.75V, rail-to-rail output swing to ground, and internal clock synchronization via Pin 5 - all in an SO-8 package rated for –40°C to 125°C.
Technical Context
The LTC1050HS8#PBF uses chopper-stabilization with on-die sampling capacitors to eliminate external components required by legacy chopper amps like the LT1050 or ICL7650. Its dual-stage architecture combines auto-zeroing and chopping to achieve <0.01µV/°C typical drift and 160dB open-loop gain while maintaining 4V/µs slew rate.
Pin 5 supports optional TTL-compatible external clock input (÷4 internally), enabling noise spectral shaping and system-level synchronization. The device operates with dual ±2.375V to ±8V supplies or single 4.75V–16V, and features input common-mode range extending to both rails - critical for ground-referenced sensor front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | ±5µV max - enables direct measurement of µV-level thermocouple outputs without nulling circuitry |
| Offset Drift | ±0.05µV/°C max - ensures <1µV total drift over 20°C ambient change, critical for lab-grade instrumentation |
| Input Noise (0.1–10Hz) | 1.6µVP-P typ - supports 16-bit+ resolution in low-frequency data acquisition systems |
| CMRR | 120dB min at DC & 60Hz - rejects power-line interference in unshielded industrial sensor nodes |
| Supply Current | 1mA typ - allows battery-powered portable medical devices to operate >1 year on AA cells |
| Gain Bandwidth | 2.5MHz - sufficient for closed-loop gain ≥100 with phase margin >60° in precision filter designs |
| Slew Rate | 4V/µs - handles fast step recovery after overload (3ms typical) without settling errors in multiplexed DAQ |
Pinout & Package
Package: 8-lead plastic SO (SO-8), RoHS-compliant, JEDEC MS-012AC, body size 3.9mm × 4.9mm × 1.75mm, thermal resistance θJA = 150°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No Connect | Internally unconnected; must be left floating or tied to ground per layout best practices |
| 2 (–IN) | Inverting Input | Differential input node with picoampere bias current - requires guard ring routing in high-impedance applications |
| 3 (+IN) | Noninverting Input | High-impedance input referenced to V–; thermocouple junctions must avoid dissimilar metal contacts |
| 4 (V–) | Negative Supply | Supports dual-supply (±5V) or single-supply (ground reference); common-mode range includes V– |
| 5 (EXT CLOCK) | External Clock Input | TTL-compatible sync input; internal oscillator disabled when driven - enables noise frequency shifting |
| 6 (OUT) | Output | Rail-to-rail swing to ground; drives 10kΩ loads with ±4.85V swing - suitable for ADC driver stages |
| 7 (V+) | Positive Supply | Accepts 4.75V–16V single or ±2.375V–±8V dual; PSRR >125dB minimizes supply ripple coupling |
| 8 (NC) | No Connect | Internally unconnected; no PCB trace required - reduces parasitic capacitance in sensitive layouts |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Sample-and-Hold Capacitors | Eliminates two external 1µF capacitors required by LT1050/ICL7650 - reduces BOM count and board area by 12mm² |
| Guaranteed Low-Frequency Noise | 100% lot-tested for 0.1Hz–10Hz noise - ensures specification compliance without screening in production test |
| Thermal EMF Mitigation Support | Specified warm-up drift dominated by package-induced copper/kovar junctions - guides thermal layout for <1µV error budgets |
| Overload Recovery Time | 3ms typical from negative saturation - 100× faster than chopper amps using external capacitors, improving multiplexer settling |
| Pin Compatibility with Legacy Choppers | Direct drop-in replacement for ICL7650/7652 in 8-pin SO/DIP packages - no PCB redesign needed if external caps are omitted |
Applications
| Thermocouple Amplification | Strain Gauge Signal Conditioning |
|---|---|
Use Scenario: Amplifying Type K thermocouple outputs (41µV/°C) across 0°C–100°C range with cold-junction compensation. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with 1000× gain, rejecting 60Hz line noise via >120dB CMRR. Use Value: Achieves <0.1°C accuracy without calibration due to 5µV offset and 0.05µV/°C drift - eliminates manual nulling circuits. | Use Scenario: Reading Wheatstone bridge outputs from load cells with 2mV/V sensitivity under 100kg full scale. IC Role / Device Role / Timing Role: Low-noise, high-CMRR instrumentation front-end driving 16-bit sigma-delta ADC. Use Value: 1.6µVP-P noise enables 18-bit effective resolution; rail-to-ground output interfaces directly with ADC reference. |
| Medical ECG Front-End | High-Resolution Data Acquisition |
Use Scenario: Amplifying microvolt-level cardiac signals (0.5–5mV) with 0.05–150Hz bandwidth in portable ECG monitors. IC Role / Device Role / Timing Role: First-stage AC-coupled amplifier with ultra-low drift to prevent baseline wander over hours. Use Value: 0.01µV/°C typical drift prevents >100µV baseline shift during clinical sessions - meets AHA Class I requirements. | Use Scenario: Digitizing slow-varying sensor outputs (pressure, humidity) in environmental monitoring nodes. IC Role / Device Role / Timing Role: DC-accurate buffer and anti-aliasing filter driver for SAR ADCs. Use Value: Guaranteed 120dB CMRR and 130dB PSRR suppress power-supply and ground-bounce artifacts in multi-sensor systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC2050CS6#TRMPBF | Single SOT-23 package; 0.005µV/°C typical drift; 1.5µVP-P noise; 3MHz GBW; 1.5mA supply current | Higher density for space-constrained wearables; lacks external clock sync and SO-8 thermal performance | Select for ultra-miniature PCBs where SO-8 footprint is prohibitive and external clock not required |
| LTC1051HS8#PBF | Dual-channel version; identical specs per channel; shared supply pins; 2.5mA total supply current | Reduces component count in dual-path systems (e.g., differential sensor pairs, I/Q demodulation) | Select when two matched zero-drift amps are needed - avoids channel-to-channel drift mismatch of discrete solutions |
Compared with LTC2050CS6#TRMPBF, LTC1050HS8#PBF offers superior thermal stability in SO-8 packaging and external clock synchronization for noise management; compared with LTC1051HS8#PBF, it provides lower power and smaller footprint for single-channel applications where dual functionality is unnecessary.
Availability
LTC1050HS8#PBF is available at Aetrix Electronics and suitable for thermocouple amplification, strain gauge signal conditioning, medical instrumentation, high-resolution data acquisition, and DC-accurate active filter design requiring stable component supply across extended temperature ranges.
Supply support for LTC1050HS8#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, inheriting its precision analog portfolio including chopper-stabilized op amps renowned for nanovolt-level stability.
The LTC1050HS8#PBF belongs to Linear's zero-drift operational amplifier family, engineered specifically for DC-accurate sensor signal conditioning in harsh environments where thermal drift and 1/f noise degrade measurement integrity.
FAQ
What is the maximum operating temperature range for the LTC1050HS8#PBF?
The LTC1050HS8#PBF is rated for operation from –40°C to +125°C, matching the H-grade temperature specification defined in the Linear Technology datasheet. This extended range supports deployment in automotive engine control modules, industrial motor drives, and outdoor environmental sensors where ambient temperatures exceed commercial-grade limits. The SO-8 package's θJA of 150°C/W ensures thermal reliability under continuous 1mA load at maximum ambient.
Does the LTC1050HS8#PBF require external capacitors for chopper stabilization?
No, the LTC1050HS8#PBF integrates on-die sample-and-hold capacitors, eliminating the two external 1µF capacitors required by predecessors like the ICL7650. Pins 1 and 8 are NC (no connect), confirming no external capacitor attachment points exist. This integration reduces PCB area, component count, and parasitic leakage paths - directly enabling the specified 5µV offset and 0.05µV/°C drift without external tuning.
Can the LTC1050HS8#PBF operate from a single 5V supply?
Yes, the LTC1050HS8#PBF supports single-supply operation from 4.75V to 16V, with guaranteed PSRR down to 4.75V. When powered from +5V and ground, the input common-mode range extends to V– (ground), and the output swings to within 150mV of ground - enabling direct interfacing with 5V ADCs and microcontrollers. The internal clock remains functional, and all DC specifications (offset, drift, CMRR) are maintained per the datasheet's single-supply test conditions.
What is the function of Pin 5 on the LTC1050HS8#PBF?
Pin 5 is the optional external clock input for the LTC1050HS8#PBF. When left floating, the internal oscillator runs at ~2.5kHz (sampling frequency), but applying a TTL-compatible square wave to Pin 5 overrides this and sets the sampling frequency to one-quarter of the input clock. This feature enables synchronized noise shaping across multiple LTC1050HS8#PBF devices in a system, reducing beat frequencies and improving overall SNR in multi-channel data acquisition.
How does the LTC1050HS8#PBF compare to the LT1050 in terms of performance?
The LTC1050HS8#PBF significantly outperforms the LT1050: it achieves 5µV vs. 25µV max offset, 0.05µV/°C vs. 0.5µV/°C max drift, and 1.6µVP-P vs. 3µVP-P low-frequency noise. Crucially, the LTC1050HS8#PBF integrates capacitors - whereas the LT1050 requires two external 1µF parts - and offers guaranteed 120dB CMRR at 60Hz, unlike the LT1050's unspecified AC rejection. Both share pin compatibility, enabling direct upgrade paths.
LTC1050HS8#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Zero-Drift
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 4V/µs
- Gain Bandwidth Product:
- 2.5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 10 pA
- Voltage - Input Offset:
- 0.5 µV
- Current - Supply:
- 1mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 4.75 V
- Voltage - Supply Span (Max):
- 16 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LTC1050HS8#PBF FAQ
1.How can I place an order for LTC1050HS8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1050HS8#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 LTC1050HS8#PBF reliable?
The price and inventory of LTC1050HS8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1050HS8#PBF is usually 5 days.
3.What payment methods are accepted for LTC1050HS8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1050HS8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1050HS8#PBF?
LTC1050HS8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1050HS8#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 LTC1050HS8#PBF?
For technical support, including LTC1050HS8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1050HS8#PBF requirements.
6.How does Aetrix verify that LTC1050HS8#PBF is sourced from the original manufacturer or authorized distributors?
All LTC1050HS8#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 LTC1050HS8#PBF meets industry standards.
7.What is the process for return or replacement of LTC1050HS8#PBF?
All LTC1050HS8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1050HS8#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 LTC1050HS8#PBF part is unused and in its original packaging.
Return procedure for LTC1050HS8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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