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Analog Devices Inc. LTC1151CSW#PBF
- Part No.:
- LTC1151CSW#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
LTC1151CSW#PBF.pdf
- Description:
- IC OPAMP ZERO-DRIFT 2 CIRC 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:1,621
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Product details
Overview
LTC1151CSW#PBF from Analog Devices (formerly Linear Technology) is a dual, high-voltage, zero-drift operational amplifier optimized for precision DC-coupled signal conditioning. It delivers 0.5µV typical input offset voltage, 0.01µV/°C drift, 1.5µVP-P (0.1Hz–10Hz) input noise, ±15V supply operation, and 2.5MHz gain-bandwidth - enabling high-resolution thermocouple amplification and strain gauge measurement in industrial instrumentation.
For engineers reviewing the LTC1151CSW#PBF datasheet, LTC1151CSW#PBF pinout, LTC1151CSW#PBF application, or LTC1151CSW#PBF equivalent, key selection criteria include ultra-low drift performance under ±15V supplies, integrated chopper sampling (no external hold capacitors), guaranteed CMRR ≥106dB over temperature, and compatibility with standard dual op-amp sockets in N8 and SW packages.
Technical Context
The LTC1151CSW#PBF implements a proprietary auto-zeroing architecture with on-chip sample-and-hold capacitors per amplifier, eliminating the need for external timing components. Its high-voltage CMOS process enables full 36V total supply operation (±18V), while maintaining rail-to-rail input common-mode range including ground.
It features dual independent amplifiers sharing no internal bias or reference paths, ensuring channel-to-channel isolation. Internal sampling frequency is fixed at 1000Hz (LTC1151C grade), and overload recovery from negative saturation is specified at 20ms - critical for sensor front-end stability after transient overloads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | ±0.5µV typical - enables sub-10µV system-level DC error in precision bridge or thermocouple circuits |
| Offset Drift | ±0.01µV/°C typical - ensures <1µV total drift over 100°C ambient range, critical for unattended long-term measurements |
| 0.1Hz–10Hz Noise | 1.5µVP-P - supports 20-bit+ effective resolution in low-frequency sensor readouts without external filtering |
| Supply Range | ±2.375V to ±16V (36V total) - operates directly from legacy ±15V rails and supports wide industrial supply tolerances |
| CMRR | ≥106dB over full temperature range - rejects common-mode interference from noisy industrial grounds or shared sensor excitation |
| PSRR | ≥110dB over full temperature range - maintains accuracy despite ripple or variation on ±15V power rails |
| Slew Rate | 2.5V/µs - handles fast step inputs (e.g., relay closures, switch transients) without slewing-induced settling errors |
| Gain-Bandwidth | 2.5MHz - supports stable closed-loop gains up to ~1000 at DC while preserving phase margin in feedback networks |
Pinout & Package
Package: 16-lead plastic SO (wide body, 0.300-inch), also known as SW package. RoHS-compliant lead-free finish (#PBF).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 13–16 | No Connect (NC) | Unused pins; must be left floating or tied to GND per layout best practices to minimize leakage |
| 3 | Output A | Inverting amplifier output; drives external load or next stage with ±14.5V swing into 10kΩ |
| 4 | −IN A | Inverting input of Amplifier A; high-impedance node requiring guarding for picoampere-level bias current integrity |
| 5 | +IN A | Non-inverting input of Amplifier A; referenced to guard ring in non-inverting configurations |
| 6 | V− | Negative supply rail; connects to −15V; must be decoupled locally with 0.1µF ceramic |
| 7 | V+ | Positive supply rail; connects to +15V; requires local 0.1µF ceramic decoupling |
| 8 | Output B | Inverting amplifier output; electrically isolated from Output A; shares no internal nodes |
| 9 | −IN B | Inverting input of Amplifier B; independent bias path; susceptible to thermal EMF if unbalanced |
| 10 | +IN B | Non-inverting input of Amplifier B; used in differential or instrumentation topologies with matched routing |
Key Features
| Feature | Design Value |
|---|---|
| Integrated chopper sampling | Eliminates need for two external 100pF–1nF hold capacitors per amplifier - reduces board area, leakage risk, and calibration complexity |
| High-voltage CMOS process | Enables ±18V operation (36V total) while maintaining 0.9mA/amplifier supply current - replaces discrete high-voltage op-amp solutions |
| Input common-mode range includes ground | Allows direct interface to single-ended sensors (e.g., RTDs, thermistors) referenced to system GND without level-shifting circuitry |
| Guaranteed CMRR ≥106dB over temperature | Ensures consistent rejection of EMI-coupled noise in factory-floor environments where ground gradients exceed 100mV |
| Low 1.5µVP-P 0.1Hz–10Hz noise | Permits direct digitization of µV-level thermocouple outputs with 24-bit ΣΔ ADCs without additional noise-filtering stages |
| Pin-compatible with industry-standard dual op amps | Plugs into existing ±15V DIP or SO sockets - enables drop-in upgrade of legacy systems (e.g., replacing LM358 or OP27 variants) without PCB redesign |
Applications
| Strain Gauge Amplifiers | Thermocouple Amplifiers |
|---|---|
Use Scenario: Wheatstone bridge output from metal foil strain gauges in load cells or pressure transducers operating in harsh industrial environments. IC Role / Device Role / Timing Role: Primary DC-coupled instrumentation amplifier front-end, providing gain, offset nulling, and common-mode suppression before ADC conversion. Use Value: Sub-5µV offset and 0.05µV/°C max drift ensure ≤0.01% full-scale error over 0–70°C - meeting Class C load cell accuracy requirements per OIML R60. | Use Scenario: Cold-junction compensated Type K thermocouple signal conditioning in furnace controllers and environmental test chambers. IC Role / Device Role / Timing Role: Dual-amplifier configuration: one channel amplifies thermocouple voltage (100mV/°C), second conditions cold-junction sensor output. Use Value: 1.5µVP-P low-frequency noise and 0.01µV/°C drift enable ±0.1°C measurement resolution over 0–1000°C range without digital post-processing. |
| Electronic Scales | Medical Instrumentation |
Use Scenario: High-accuracy benchtop and platform scales using 350Ω foil bridges with 10mV/V sensitivity and 10kg–100kg capacity. IC Role / Device Role / Timing Role: First-stage gain and offset trimming amplifier in analog front-end, driving 24-bit ΣΔ ADC with programmable gain. Use Value: Integrated chopper eliminates external hold capacitors - reducing microphonic sensitivity and long-term drift caused by capacitor aging in sealed scale enclosures. | Use Scenario: Biopotential signal acquisition in ECG/EEG patient monitors requiring DC-coupled, low-noise amplification of mV-level signals. IC Role / Device Role / Timing Role: Isolated, guarded input stage for differential electrode inputs, rejecting 50/60Hz mains interference via high CMRR. Use Value: Input common-mode range including ground allows direct connection to patient electrodes without AC coupling - preserving true DC baseline for arrhythmia detection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision dual op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC1151CN8 | Same die, 8-lead PDIP package; higher θJA (130°C/W vs 200°C/W); no NC pins | Preferred for through-hole prototyping, socket-based test fixtures, or legacy DIP layouts | Select when mechanical compatibility with existing DIP footprints or manual assembly is required |
| LTC1051CSW#PBF | Lower supply current (200µA/amplifier vs 0.9mA); reduced GBW (1.5MHz); lower max supply (±8V) | Better suited for battery-powered portable instruments where power budget <1mW/amplifier is critical | Choose only if ultra-low power outweighs need for ±15V operation and 2.5MHz bandwidth |
Compared with LTC1151CN8, the LTC1151CSW#PBF offers superior thermal performance in surface-mount layouts and eliminates socket-related contact resistance errors; compared with LTC1051CSW#PBF, it provides 4.5× higher supply voltage headroom and 1.7× greater bandwidth - essential for industrial ±15V signal chains requiring robustness and speed.
Availability
LTC1151CSW#PBF is available at Aetrix Electronics and suitable for industrial instrumentation, precision weighing systems, and medical sensor front-ends requiring stable component supply across multi-year production cycles.
Supply support for LTC1151CSW#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 continuity, documentation, and manufacturing for all Linear precision analog ICs.
The LTC1151CSW#PBF belongs to Linear's zero-drift op amp family, designed specifically for DC-accurate signal conditioning in metrology-grade industrial, medical, and scientific equipment where microvolt-level stability is mandatory.
FAQ
What is the maximum total supply voltage rating for the LTC1151CSW#PBF?
The LTC1151CSW#PBF has an absolute maximum total supply voltage (V+ to V−) of 36V. This allows reliable operation at ±15V (30V total) with 6V of margin, accommodating transient overvoltage events and supply rail tolerances in industrial power systems. Operation beyond 36V risks permanent damage to the internal high-voltage CMOS structures.
Does the LTC1151CSW#PBF require external capacitors for chopper stabilization?
No, the LTC1151CSW#PBF integrates all necessary sample-and-hold capacitors on-die. Unlike earlier chopper amplifiers such as the LTC1050 or LTC1051, it eliminates the need for two external 100pF–1nF capacitors per amplifier - reducing PCB area, leakage paths, and thermal EMF sources that degrade microvolt-level accuracy.
What is the guaranteed common-mode rejection ratio (CMRR) over temperature for the LTC1151CSW#PBF?
The LTC1151CSW#PBF guarantees a minimum CMRR of 106dB over its full operating temperature range (0°C to 70°C). This specification ensures consistent rejection of common-mode interference - such as ground loop noise or shared excitation crosstalk - even under thermal stress, making it suitable for high-noise factory environments.
Can the LTC1151CSW#PBF operate from a single 5V supply?
Yes, the LTC1151CSW#PBF supports single-supply operation from 4.75V to 36V. At 5V, it maintains guaranteed PSRR ≥110dB and CMRR ≥106dB, with input common-mode range extending to ground. However, output swing is limited to ~0.3V to 4.5V (RL = 10kΩ), so level-shifting or rail-to-rail output stages may be needed for full-scale digitization.
How does thermal EMF affect the LTC1151CSW#PBF's offset performance in real-world layouts?
Thermal EMF at copper-solder-resistor junctions can dominate the LTC1151CSW#PBF's 0.5µV typical offset - especially with temperature gradients >1°C across input traces. To preserve microvolt accuracy, use metal-film resistors (<20µV/°C), minimize input path junctions, implement symmetric guarding, and avoid connectors/sockets in the signal path. Package-induced warm-up drift (0.5–3 min time constant) also contributes to initial offset shift.
LTC1151CSW#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Zero-Drift
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 2.5V/µs
- Gain Bandwidth Product:
- 2 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 15 pA
- Voltage - Input Offset:
- 0.5 µV
- Current - Supply:
- 900µA (x2 Channels)
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 4.75 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SO
LTC1151CSW#PBF FAQ
1.How can I place an order for LTC1151CSW#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1151CSW#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 LTC1151CSW#PBF reliable?
The price and inventory of LTC1151CSW#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1151CSW#PBF is usually 5 days.
3.What payment methods are accepted for LTC1151CSW#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1151CSW#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1151CSW#PBF?
LTC1151CSW#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1151CSW#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 LTC1151CSW#PBF?
For technical support, including LTC1151CSW#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1151CSW#PBF requirements.
6.How does Aetrix verify that LTC1151CSW#PBF is sourced from the original manufacturer or authorized distributors?
All LTC1151CSW#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 LTC1151CSW#PBF meets industry standards.
7.What is the process for return or replacement of LTC1151CSW#PBF?
All LTC1151CSW#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1151CSW#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 LTC1151CSW#PBF part is unused and in its original packaging.
Return procedure for LTC1151CSW#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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