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Analog Devices Inc. LT1167ACS8#PBF
- Part No.:
- LT1167ACS8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1167ACS8#PBF.pdf
- Description:
- IC INST AMP 1 CIRCUIT 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:112
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Product details
Overview
LT1167ACS8#PBF from Analog Devices (formerly Linear Technology) is a precision instrumentation amplifier requiring only one external resistor to set gains from 1 to 10,000. It delivers 7.5 nV/√Hz input voltage noise at 1 kHz, 0.3 μV/°C max input offset drift, and 90 dB CMRR at G = 1 - enabling high-accuracy bridge sensor signal conditioning in industrial and medical instrumentation.
For engineers reviewing the LT1167ACS8#PBF datasheet, LT1167ACS8#PBF pinout, LT1167ACS8#PBF application, or LT1167ACS8#PBF equivalent, this page provides verified gain error (0.08% max at G = 10), input bias current (350 pA max), supply range (±2.3 V to ±15 V), ESD rating (13 kV HBM), and SO-8 package compatibility for rapid design-in and layout validation.
Technical Context
The LT1167ACS8#PBF implements a three-op-amp instrumentation architecture with laser-trimmed 24.7 kΩ internal resistors and superbeta NPN input transistors. Its gain equation G = 1 + (49.4 kΩ / RG) enables precise programmability while maintaining matched thermal tracking across temperature.
It features a differential input stage with constant-current biasing via feedback loops, delivering low input offset voltage (40 μV max), high input impedance (200 GΩ), and robust common-mode rejection - even with 1 kΩ source imbalance and ±10 V common-mode swing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Range | 1 to 10,000 via single external resistor RG - eliminates multi-resistor networks and matching errors. |
| Input Voltage Noise | 7.5 nV/√Hz at 1 kHz - supports low-level sensor signals (e.g., thermocouples, strain gauges) without amplifying noise floor. |
| Input Offset Drift | 0.3 μV/°C max - ensures stable DC accuracy over industrial temperature range (0°C to 70°C). |
| CMRR | 90 dB min at G = 1 with 1 kΩ source imbalance - rejects interference from noisy industrial environments. |
| Supply Current | 1.3 mA max - enables low-power operation on ±2.3 V to ±15 V supplies, suitable for battery-backed systems. |
| ESD Rating | 13 kV HBM - survives handling and board-level ESD events without external protection circuitry. |
| Capacitive Load Drive | Up to 1000 pF - allows direct connection to ADC input capacitors or long traces without instability. |
Pinout & Package
LT1167ACS8#PBF is housed in an 8-lead plastic SO (SO-8) surface-mount package with standard JEDEC MS-012AC footprint and 1.27 mm lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8 | RG (Gain Set) | Connects external resistor to set gain per G = 1 + (49.4 kΩ / RG); pins are internally tied for Kelvin connection. |
| 2 | –IN | Inverting input terminal; accepts differential input voltage referenced to common-mode range. |
| 3 | +IN | Non-inverting input terminal; matched to Pin 2 for optimal CMRR and offset performance. |
| 4 | –VS | Negative supply rail connection; supports operation down to –2.3 V. |
| 5 | REF | Reference output node; output voltage is VOUT = VREF + G × (V+IN – V–IN); series resistance degrades CMRR. |
| 6 | OUTPUT | Single-ended amplified output; drives loads ≥2 kΩ and capacitive loads ≤1000 pF stably. |
| 7 | +VS | Positive supply rail connection; supports operation up to +15 V. |
Key Features
| Feature | Design Value |
|---|---|
| Laser-trimmed input offset | 40 μV max ensures <0.1 mV error in 10 V full-scale bridge measurements without trimming. |
| Single-resistor gain programming | Eliminates precision resistor matching and reduces BOM count versus discrete 3-op-amp designs. |
| High input impedance | 200 GΩ input resistance prevents loading of high-Z sources like piezoelectric sensors. |
| IEC 1000-4-2 Level 4 compliance | Passes 8 kV contact / 15 kV air discharge tests when used with two 5 kΩ external resistors. |
| Wide supply range | Operates from ±2.3 V to ±15 V - supports both low-voltage portable and industrial ±12 V systems. |
Applications
| Strain Gauge Amplifier | Thermocouple Amplifier |
|---|---|
|
Use Scenario: Amplifying mV-level differential output from a Wheatstone bridge strain gauge in load cells or structural monitoring. IC Role / Device Role: Precision differential-to-single-ended conversion with gain up to 1000 and sub-μV offset stability. Use Value: Enables 16-bit+ resolution measurement with <10 ppm nonlinearity at G = 100, reducing calibration overhead. |
Use Scenario: Conditioning microvolt-level Seebeck voltage from Type K/J thermocouples in HVAC or process control. IC Role / Device Role: Cold-junction-compensated front-end with high CMRR to reject furnace EMI and ground loop noise. Use Value: 0.3 μV/°C drift ensures <0.5°C error over 0°C–70°C ambient, eliminating frequent recalibration. |
| Differential-to-SE Converter | Medical Instrumentation |
|
Use Scenario: Converting balanced analog outputs from isolated signal chains (e.g., ISO-AMPs) to single-ended ADC inputs. IC Role / Device Role: High-PSRR (105 dB at G = 1) and low noise interface that preserves SNR across isolation barriers. Use Value: Maintains >90 dB dynamic range in 24-bit delta-sigma systems without additional filtering or shielding. |
Use Scenario: Biopotential acquisition in ECG/EEG front-ends where electrode motion artifacts and 50/60 Hz interference dominate. IC Role / Device Role: First-stage gain with 13 kV HBM ESD protection and low input bias current to minimize electrode polarization. Use Value: 350 pA max input bias avoids DC shifts during long-duration patient monitoring sessions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar instrumentation amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8421ARMZ | Higher bandwidth (12 MHz vs 1 MHz at G = 1), lower noise (3.5 nV/√Hz), but requires dual-supply and lacks IEC 1000-4-2 qualification. | Better suited for high-speed data acquisition; less ideal for cost-sensitive industrial sensors with ESD requirements. | Select AD8421ARMZ when bandwidth >100 kHz and noise <4 nV/√Hz are critical; verify layout for ESD robustness. |
| INA128UA | Lower max gain (10,000 vs 1000), higher input bias current (500 pA vs 350 pA), no guaranteed 13 kV HBM rating. | Widely used in legacy medical designs; lacks the LT1167ACS8#PBF's laser-trimmed 0.08% gain error at G = 10. | Choose INA128UA for pin-compatible replacement in existing boards where gain ≤1000 suffices and ESD margin is secondary. |
Compared with AD8421ARMZ and INA128UA, the LT1167ACS8#PBF uniquely balances ultra-low drift (0.3 μV/°C), IEC-compliant ESD robustness, and single-resistor programmability - making it optimal for precision, low-maintenance sensor interfaces in harsh environments.
Availability
LT1167ACS8#PBF is available at Aetrix Electronics and suitable for strain gauge amplifiers, thermocouple interfaces, and medical biopotential acquisition requiring stable component supply across extended production lifecycles.
Supply support for LT1167ACS8#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, including instrumentation amplifiers optimized for sensor signal conditioning and industrial measurement.
The LT1167ACS8#PBF belongs to Linear's legacy high-accuracy instrumentation amplifier family, designed specifically for low-drift, low-noise amplification of millivolt-level differential signals in demanding industrial and medical applications.
FAQ
What is the maximum gain achievable with LT1167ACS8#PBF?
The LT1167ACS8#PBF supports gains from 1 to 10,000 using a single external resistor RG, calculated as G = 1 + (49.4 kΩ / RG). At G = 10,000, RG = 4.94 Ω (±0.1% tolerance recommended). The LT1167ACS8#PBF maintains 10 ppm nonlinearity at G = 100 and 20 ppm at G = 1000 under specified conditions.
Does LT1167ACS8#PBF support single-supply operation?
Yes, the LT1167ACS8#PBF operates with single supplies down to +4.6 V (e.g., +4.6 V and GND), provided the REF pin is biased within the input common-mode range and output remains within swing limits. The barometer reference design in the datasheet demonstrates valid single-supply use with output centered at mid-rail.
What is the guaranteed input offset voltage specification for LT1167ACS8#PBF?
The LT1167ACS8#PBF has a maximum input offset voltage of 60 μV at G = 10 and ±15 V supplies, tested over the 0°C to 70°C temperature range. This is laser-trimmed at wafer level and does not require external nulling circuitry in most precision applications.
Can LT1167ACS8#PBF drive ADC input capacitors directly?
Yes, the LT1167ACS8#PBF is characterized to drive capacitive loads up to 1000 pF stably in all gain configurations. This allows direct connection to SAR or delta-sigma ADC inputs without isolation resistors or buffer stages, preserving signal integrity and simplifying layout.
Is LT1167ACS8#PBF RoHS compliant and lead-free?
Yes, the LT1167ACS8#PBF carries the #PBF suffix indicating lead-free finish and full RoHS compliance. It uses matte tin plating over copper leads and meets JEDEC J-STD-020 moisture sensitivity level 3 (MSL-3) for standard SMT assembly.
LT1167ACS8#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:
- Instrumentation
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 1.2V/µs
- Gain Bandwidth Product:
- 1 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 50 pA
- Voltage - Input Offset:
- 15 µV
- Current - Supply:
- 900µA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 4.6 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LT1167ACS8#PBF FAQ
1.How can I place an order for LT1167ACS8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1167ACS8#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 LT1167ACS8#PBF reliable?
The price and inventory of LT1167ACS8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1167ACS8#PBF is usually 5 days.
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LT1167ACS8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1167ACS8#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 LT1167ACS8#PBF?
For technical support, including LT1167ACS8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1167ACS8#PBF requirements.
6.How does Aetrix verify that LT1167ACS8#PBF is sourced from the original manufacturer or authorized distributors?
All LT1167ACS8#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 LT1167ACS8#PBF meets industry standards.
7.What is the process for return or replacement of LT1167ACS8#PBF?
All LT1167ACS8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1167ACS8#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 LT1167ACS8#PBF part is unused and in its original packaging.
Return procedure for LT1167ACS8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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