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Analog Devices Inc. LT1101ACN8#PBF
- Part No.:
- LT1101ACN8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
LT1101ACN8#PBF.pdf
- Description:
- IC INST AMP 1 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,038
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Product details
Overview
LT1101ACN8#PBF from Analog Devices (formerly Linear Technology) is a precision micropower instrumentation amplifier with fixed gains of 10 or 100 in an 8-lead PDIP package. It delivers 0.04% max gain error, 0.0008% (8 ppm) max gain nonlinearity, and 4 ppm/°C max gain drift, operating from single 1.8V supplies or dual ±15V rails - ideal for battery-powered bridge transducer signal conditioning in industrial sensors.
For engineers reviewing the LT1101ACN8#PBF datasheet, LT1101ACN8#PBF pinout, LT1101ACN8#PBF application, or LT1101ACN8#PBF equivalent, key selection criteria include guaranteed rail-to-rail input/output swing near ground in single-supply mode, no external gain-setting resistor requirement, and validated performance at 0°C to 70°C ambient temperature with ≤105 µA supply current.
Technical Context
The LT1101ACN8#PBF implements a three-op-amp topology with internal 90R/9R resistor network enabling fixed G = 10 or G = 100 configurations via pin-strapping (Pin 2↔1 and Pin 7↔8 for G = 10). Its PNP-input stage supports ±36V differential input voltage and enables operation down to 1.8V total supply while maintaining CMRR ≥98 dB at G = 100.
Unlike competitive instrumentation amplifiers, it achieves true single-supply functionality: both inputs and output swing within millivolts of ground, eliminating need for pull-down resistors. Output drives ±10V into 2kΩ load with <0.06% gain error, and features no output offset voltage contribution to total error - a unique architectural advantage for precision DC-coupled measurement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Options | Fixed G = 10 or G = 100; selected by shorting Pin 2→1 and Pin 7→8 (G = 10) or leaving open (G = 100) |
| Gain Error | 0.04% max at G = 100, RL = 50kΩ - ensures ≤4 mV error on 10 V output for high-accuracy sensor scaling |
| Input Offset Voltage | 160 µV max - contributes <0.16 mV error at G = 10, critical for µV-level thermocouple signals |
| Supply Current | 105 µA max at TA = 25°C - enables >1-year battery life in 10 µA average-power remote sensor nodes |
| CMRR | 100 dB min at G = 100 - rejects 100 mV common-mode noise as <10 µV differential error |
| Min Supply Voltage | 1.8 V total - supports direct operation from single lithium cell or two Ni-Cd batteries |
| 0.1Hz–10Hz Noise | 0.9 µVp-p typ - low-frequency stability essential for static strain gauge and pressure bridge measurements |
Pinout & Package
LT1101ACN8#PBF uses an 8-lead plastic DIP (N8) package with 0.300-inch width, JEDEC MS-001 compliant, rated for 0°C to 70°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Reference (REF) | Ground reference node for output common-mode level; tied to system ground in single-supply configs |
| 2 | Inverting Input (–IN) | Differential input terminal; internally connected to first-stage PNP emitter |
| 3 | Noninverting Input (+IN) | Differential input terminal; accepts signals down to 0 V in single-supply mode |
| 4 | V– | Negative supply pin; may be connected to ground for single-supply operation |
| 5 | NC | No connection; electrically isolated, must remain unconnected |
| 6 | V+ | Positive supply pin; supports 1.8 V to ±22 V total supply range |
| 7 | Output (OUT) | Amplified differential output; sinks current to ground without external pull-down |
| 8 | NC | No connection; electrically isolated, must remain unconnected |
Key Features
| Feature | Design Value |
|---|---|
| Self-contained fixed-gain architecture | Eliminates external gain-setting resistor, reducing BOM count and layout sensitivity to parasitic capacitance |
| Rail-to-rail input/output near ground | Enables direct interfacing with 0 V–referenced bridges and ADCs without level-shifting circuitry |
| True micropower operation | 75 µA typical supply current allows continuous monitoring in energy-harvested or coin-cell systems |
| Robust input protection | ±36 V differential input tolerance with PNP inputs prevents latch-up or damage during field transients |
| No output offset contribution | Removes a major error source in precision DC measurements, simplifying system calibration |
Applications
| Micropower Bridge Transducer Amplifier | Differential Voltage-to-Current Converter |
|---|---|
Use Scenario: Amplifying mV-level outputs from strain gauges in structural health monitoring sensors powered by CR2032 coin cells. IC Role / Device Role / Timing Role: Precision instrumentation amplifier providing fixed G = 100 gain with <0.1 mV offset error and sub-1 µVp-p low-frequency noise. Use Value: Enables 16-bit effective resolution on 24-bit sigma-delta ADCs without chopper stabilization, extending battery life beyond 2 years. | Use Scenario: Converting bridge differential voltage to 4 mA–20 mA loop current for industrial pressure transmitters. IC Role / Device Role / Timing Role: High-accuracy front-end amplifier driving LT1010 buffer and current-sense resistor in loop transmitter feedback path. Use Value: Maintains <0.1% full-scale accuracy over –40°C to +85°C with no warm-up drift, meeting IEC 61000-4-5 surge immunity requirements. |
| Single-Supply Thermocouple Interface | Low-Voltage Remote Temperature Sensor |
Use Scenario: Cold-junction compensation and amplification of Type-K thermocouple outputs in portable handheld test equipment. IC Role / Device Role / Timing Role: Fixed-G = 100 instrumentation amplifier operating from 3.3 V single supply with output swing to 10 mV above ground. Use Value: Delivers 0.5°C accuracy across 0°C–150°C range without external offset trimming, reducing calibration labor by 70%. | Use Scenario: Signal conditioning for LM134-based remote temperature probes powered by 1.8 V lithium thionyl chloride cells. IC Role / Device Role / Timing Role: Micropower instrumentation amplifier (G = 10) interfacing 10 mV/°C sensor output to ultra-low-power SAR ADC. Use Value: Achieves ±0.5°C accuracy at 1.8 V supply with 105 µA quiescent current, enabling 10-year deployment in inaccessible locations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar instrumentation amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8221ARMZ | Gain set by external resistor (G = 1–1000); 350 µA supply current; requires dual supply for rail-to-rail input near ground | Used where programmable gain and higher bandwidth (800 kHz) are needed, but unsuitable for 1.8 V single-supply battery operation | Select AD8221ARMZ only when variable gain and >10× bandwidth outweigh micropower and single-supply constraints |
| INA333AIDR | Zero-drift architecture; 50 µA supply current; G = 1–1000 via resistor; specified down to 1.8 V but input common-mode range excludes ground at G = 100 | Preferred for zero-drift DC stability in long-duration data loggers, but requires level-shifting for true 0 V–referenced bridge inputs | Choose INA333AIDR when offset drift <0.005 µV/°C is mandatory and system can accommodate input biasing networks |
Compared with AD8221ARMZ and INA333AIDR, the LT1101ACN8#PBF uniquely combines fixed low-gain accuracy, sub-100 µA power, and guaranteed 0 V input/output swing - making it irreplaceable in space-constrained, single-cell-powered bridge sensor nodes where external resistors and level shifters are prohibited.
Availability
LT1101ACN8#PBF is available at Aetrix Electronics and suitable for industrial sensor nodes, battery-powered medical diagnostics, and aerospace-grade transducer interfaces requiring stable component supply across extended product lifecycles.
Supply support for LT1101ACN8#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 legacy of high-precision analog ICs for demanding measurement applications.
The LT1101 product line was designed specifically for micropower, single-supply instrumentation tasks - targeting bridge-based sensors, portable medical devices, and remote environmental monitors where supply voltage headroom and quiescent power are severely constrained.
FAQ
What is the maximum supply voltage rating for LT1101ACN8#PBF?
The LT1101ACN8#PBF has an absolute maximum supply voltage rating of ±22 V across V+ and V– pins. Operation beyond this limit risks permanent damage. For reliable long-term use, Analog Devices specifies recommended operating conditions up to ±15 V with derating above 70°C ambient. The LT1101ACN8#PBF maintains full specification compliance from 1.8 V to ±15 V supply range.
Can LT1101ACN8#PBF operate with a single 1.8 V supply?
Yes, the LT1101ACN8#PBF is fully specified to operate from a single 1.8 V supply (V+ = 1.8 V, V– = 0 V), delivering guaranteed gain accuracy and rail-to-rail input/output swing within millivolts of ground. This capability is validated per Note 5 in the datasheet and confirmed across 0°C to 70°C for the AC grade. The LT1101ACN8#PBF achieves this using PNP input stages and optimized internal biasing - a key differentiator versus competing instrumentation amplifiers.
How do I configure LT1101ACN8#PBF for G = 10 versus G = 100?
To configure the LT1101ACN8#PBF for G = 10, short Pin 2 (–IN) to Pin 1 (REF) and Pin 7 (OUT) to Pin 8 (NC). For G = 100, leave Pins 1–2 and 7–8 unconnected - Pin 8 remains floating. This pin-strapping method uses the internal 90R/9R resistor network and requires no external components. The LT1101ACN8#PBF datasheet Figure TA01 provides the exact routing diagram and confirms no performance degradation occurs with either configuration.
Does LT1101ACN8#PBF require external offset nulling circuitry?
No, the LT1101ACN8#PBF does not include dedicated offset null pins and is not designed for external trimming. Its 160 µV max input offset voltage and 0.4 µV/°C drift are factory-trimmed and stable over temperature. In bridge applications, system-level calibration (e.g., zeroing the bridge itself) inherently compensates for LT1101ACN8#PBF offset - eliminating need for nulling networks that would increase power consumption and board area. This design choice preserves the LT1101ACN8#PBF's micropower advantage.
What is the common-mode input voltage range for LT1101ACN8#PBF at G = 100 with ±15 V supplies?
With ±15 V supplies and G = 100, the LT1101ACN8#PBF supports a common-mode input voltage range of –14.4 V to +13.8 V - verified per Electrical Characteristics table on page 3 of the datasheet. This wide range enables direct connection to high-voltage bridges without attenuation. At single 5 V supply (V+ = 5 V, V– = 0 V), the common-mode range extends from 0 V to 3.4 V, allowing full utilization of low-voltage sensor outputs. All values are guaranteed for the AC grade (0°C to 70°C).
LT1101ACN8#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:
- Instrumentation
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 0.1V/µs
- Gain Bandwidth Product:
- 37 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 6 nA
- Voltage - Input Offset:
- 50 µV
- Current - Supply:
- 92µA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.2 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
LT1101ACN8#PBF FAQ
1.How can I place an order for LT1101ACN8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1101ACN8#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 LT1101ACN8#PBF reliable?
The price and inventory of LT1101ACN8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1101ACN8#PBF is usually 5 days.
3.What payment methods are accepted for LT1101ACN8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1101ACN8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1101ACN8#PBF?
LT1101ACN8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1101ACN8#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 LT1101ACN8#PBF?
For technical support, including LT1101ACN8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1101ACN8#PBF requirements.
6.How does Aetrix verify that LT1101ACN8#PBF is sourced from the original manufacturer or authorized distributors?
All LT1101ACN8#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 LT1101ACN8#PBF meets industry standards.
7.What is the process for return or replacement of LT1101ACN8#PBF?
All LT1101ACN8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1101ACN8#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 LT1101ACN8#PBF part is unused and in its original packaging.
Return procedure for LT1101ACN8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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