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Analog Devices Inc. LT1167CS8-1#PBF
- Part No.:
- LT1167CS8-1#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LT1167CS8-1#PBF.pdf
- Description:
- IC INST AMP 1 CIRCUIT 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:1,982
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Product details
Overview
LT1167CS8-1#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 signal conditioning in industrial sensor interfaces.
For engineers reviewing the LT1167CS8-1#PBF datasheet, LT1167CS8-1#PBF pinout, LT1167CS8-1#PBF application, or LT1167CS8-1#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 ±18 V), and IEC 1000-4-2 Level 4 ESD compliance with two 5 kΩ resistors - all critical for medical transducer amplification and strain gauge front-ends.
Technical Context
The LT1167CS8-1#PBF implements a three-op-amp architecture with laser-trimmed 24.7 kΩ internal resistors and superbeta NPN input transistors, ensuring tight matching and low drift. Its gain equation G = 1 + (49.4 kΩ / RG) enables precise programmability while maintaining 10 ppm max nonlinearity at G = 10.
Unlike the standard LT1167, the "-1" variant features improved input current behavior at high common-mode voltages, supporting high-impedance sensor interfaces without degradation of CMRR or offset stability - confirmed in the Applications Information section of the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Range | 1 to 10,000 via single external resistor RG; enables flexible sensor scaling without complex resistor networks. |
| Input Offset Drift | 0.3 μV/°C max (0°C to 70°C); ensures stable DC accuracy across industrial temperature ranges. |
| CMRR at G = 1 | 90 dB min; rejects common-mode interference in noisy plant-floor environments. |
| Supply Current | 1.3 mA max (±2.3 V to ±18 V); supports low-power portable instrumentation designs. |
| Input Voltage Noise | 7.5 nV/√Hz at 1 kHz; preserves signal integrity in low-level thermocouple and strain gauge outputs. |
| ESD Rating | 13 kV HBM; meets IEC 1000-4-2 Level 4 with two external 5 kΩ resistors - validated for field-deployed sensors. |
| Operating Temp | 0°C to 70°C; specified and tested for commercial/industrial control systems. |
Pinout & Package
LT1167CS8-1#PBF is housed in an 8-lead plastic SO (S8) package, 3.9 mm × 4.9 mm, with standard SOIC footprint and gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RG (Gain Set) | Connects to external resistor to program gain per G = 1 + (49.4 kΩ / RG); defines full-scale sensitivity. |
| 2 | –IN | Inverting input; accepts differential signal from bridge or transducer with 200 GΩ input resistance. |
| 3 | +IN | Non-inverting input; matched to Pin 2 for >90 dB CMRR; requires symmetric bias paths for best performance. |
| 4 | –VS | Negative supply rail; supports operation down to ±2.3 V; must be decoupled locally for noise immunity. |
| 5 | REF | Reference output node; sets output common-mode level; series resistance degrades CMRR and gain accuracy. |
| 6 | OUTPUT | Single-ended amplified output; drives capacitive loads up to 1000 pF without instability. |
| 7 | +VS | Positive supply rail; supports wide supply range (±2.3 V to ±18 V); enables single-supply operation when REF = –VS. |
| 8 | RG (Gain Set) | Duplicate RG terminal; used for Kelvin connection to minimize PCB trace resistance impact on gain accuracy. |
Key Features
| Feature | Design Value |
|---|---|
| Laser-trimmed input offset | 40 μV max (G = 10), enabling <10 ppm linearity in precision weigh scales without calibration. |
| Superbeta input stage | 350 pA max input bias current, permitting direct interface to high-impedance piezoresistive sensors. |
| Single-resistor gain programming | G = 1 + (49.4 kΩ / RG) eliminates trimming potentiometers and reduces BOM count in production systems. |
| IEC 1000-4-2 Level 4 compliant | Validated with two 5 kΩ resistors; satisfies EMC requirements for medical and industrial equipment without external protection. |
| Capacitive load drive | Stable with up to 1000 pF output capacitance; eliminates need for isolation resistors in ADC driver stages. |
Applications
| Bridge Amplifiers | Thermocouple Amplifiers |
|---|---|
|
Use Scenario: Amplifying mV-level differential output from Wheatstone bridge pressure sensors in HVAC controllers. IC Role / Device Role / Timing Role: Precision instrumentation amplifier providing gain, common-mode rejection, and rail-to-rail output swing referenced to REF. Use Value: 0.08% max gain error at G = 10 and 10 ppm nonlinearity ensure ±0.1% FS pressure measurement accuracy over 0°C–70°C. |
Use Scenario: Cold-junction compensated thermocouple signal conditioning in industrial ovens. IC Role / Device Role / Timing Role: Low-drift, low-noise amplifier rejecting thermocouple lead noise and power supply ripple. Use Value: 0.3 μV/°C input offset drift minimizes temperature-induced zero-error drift, critical for ±0.5°C thermal accuracy. |
| Strain Gauge Amplifiers | Medical Instrumentation |
|
Use Scenario: Signal conditioning for micro-strain measurements in structural health monitoring systems. IC Role / Device Role / Timing Role: High-input-impedance amplifier with 200 GΩ RIN, preserving signal fidelity from high-Z foil gauges. Use Value: 350 pA max input bias current prevents voltage drop across gauge resistance, avoiding measurement offset. |
Use Scenario: Biopotential front-end in portable ECG monitors requiring low-noise, low-power analog acquisition. IC Role / Device Role / Timing Role: Precision gain block with 7.5 nV/√Hz noise and 1.3 mA supply current for battery-operated devices. Use Value: 1000 Hz bandwidth at G = 100 supports full-bandwidth ECG waveform capture while minimizing power consumption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar instrumentation amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8421ARZ | Higher bandwidth (10 MHz vs 1 MHz at G = 1), lower noise (3.5 nV/√Hz), but requires dual-supply and lacks IEC 1000-4-2 validation. | Better suited for high-speed data acquisition; not drop-in for legacy LT1167CS8-1#PBF layouts due to different pinout and gain-set topology. | Select AD8421ARZ when bandwidth >1 MHz and noise <4 nV/√Hz are required; verify PCB layout compatibility. |
| INA128UA | Lower supply current (700 μA vs 1.3 mA), wider temp range (–40°C to 85°C), but higher gain error (0.15% vs 0.08% at G = 10). | Preferred for extended-temperature embedded systems where power is constrained but absolute linearity is secondary. | Choose INA128UA for ultra-low-power remote sensors; accept minor gain accuracy trade-off for 46% lower quiescent current. |
Compared with AD8421ARZ and INA128UA, the LT1167CS8-1#PBF uniquely balances IEC-compliant ESD robustness, single-resistor gain simplicity, and sub-μV/°C drift in a commercial-grade SOIC package - making it optimal for cost-sensitive, field-deployed industrial transducers.
Availability
LT1167CS8-1#PBF is available at Aetrix Electronics and suitable for bridge amplifiers, thermocouple interfaces, strain gauge readouts, and medical transducer signal chains requiring stable component supply across multi-year production cycles.
Supply support for LT1167CS8-1#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 support, datasheets, and application engineering for legacy Linear parts including the LT1167 family.
The LT1167 product line was designed specifically for high-accuracy, low-power sensor signal conditioning - targeting industrial process control, test equipment, and medical diagnostics where laser-trimmed precision and ESD-hardened reliability are mandatory.
FAQ
What is the key functional difference between LT1167CS8-1#PBF and the standard LT1167CS8#PBF?
The LT1167CS8-1#PBF features enhanced input current behavior at high common-mode voltages, as explicitly documented in the Applications Information section of the datasheet. This makes it better suited for high-impedance sensor interfaces where input bias current stability under varying CMV is critical - unlike the standard LT1167CS8#PBF, which does not guarantee this performance.
Can LT1167CS8-1#PBF operate from a single 5 V supply?
Yes, LT1167CS8-1#PBF supports single-supply operation: tie the REF pin to the negative rail (Pin 4), ensure one input remains ≥2.5 V above ground, and keep the output within the specified swing limits (e.g., –VS + 1.4 V to +VS – 1.3 V). The barometer application circuit in the datasheet demonstrates this configuration.
What is the maximum capacitive load LT1167CS8-1#PBF can drive without compensation?
LT1167CS8-1#PBF is stable driving up to 1000 pF capacitive load in any gain configuration, as confirmed in the Absolute Maximum Ratings and Typical Performance Characteristics sections. No external isolation resistor or compensation network is required for loads ≤1000 pF.
How is gain set on LT1167CS8-1#PBF, and what tolerance resistor is recommended?
Gain is set by a single external resistor RG connected between Pins 1 and 8, using G = 1 + (49.4 kΩ / RG). For 0.08% gain error at G = 10, a 0.1% tolerance metal-film resistor is recommended - the datasheet confirms 0.05% absolute matching of internal 24.7 kΩ resistors enables this accuracy.
Does LT1167CS8-1#PBF require external offset trimming in typical applications?
No, LT1167CS8-1#PBF is laser-trimmed for low input offset voltage (40 μV max at G = 10) and drift (0.3 μV/°C), eliminating the need for external trimming in most applications. The datasheet states "no external offset trimming is required for most applications," and Figure 2 shows optional circuitry only for edge-case calibration.
LT1167CS8-1#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:
- 80 pA
- Voltage - Input Offset:
- 20 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
LT1167CS8-1#PBF FAQ
1.How can I place an order for LT1167CS8-1#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1167CS8-1#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 LT1167CS8-1#PBF reliable?
The price and inventory of LT1167CS8-1#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1167CS8-1#PBF is usually 5 days.
3.What payment methods are accepted for LT1167CS8-1#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1167CS8-1#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1167CS8-1#PBF?
LT1167CS8-1#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1167CS8-1#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 LT1167CS8-1#PBF?
For technical support, including LT1167CS8-1#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1167CS8-1#PBF requirements.
6.How does Aetrix verify that LT1167CS8-1#PBF is sourced from the original manufacturer or authorized distributors?
All LT1167CS8-1#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 LT1167CS8-1#PBF meets industry standards.
7.What is the process for return or replacement of LT1167CS8-1#PBF?
All LT1167CS8-1#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1167CS8-1#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 LT1167CS8-1#PBF part is unused and in its original packaging.
Return procedure for LT1167CS8-1#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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