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Analog Devices Inc. LT1101ACN8
- Part No.:
- LT1101ACN8
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
LT1101ACN8.pdf
- Description:
- IC INST AMP 1 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,255
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Product details
Overview
LT1101ACN8 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 - enabling battery-powered bridge transducer amplification in industrial sensor interfaces.
For engineers reviewing the LT1101ACN8 datasheet, LT1101ACN8 pinout, LT1101ACN8 application, or LT1101ACN8 equivalent, key selection criteria include its guaranteed ground-swing output under single-supply operation, absence of external gain-setting resistors, and validated performance at 1.8V minimum supply voltage across 0°C to 70°C.
Technical Context
The LT1101ACN8 integrates three op-amps in a classic three-op-amp instrumentation topology with internal 90R/9R resistor networks for fixed G = 10 or G = 100 configurations. Its PNP input stage enables ±36V differential input tolerance and rail-to-rail common-mode range down to within millivolts of ground on single supply.
Gain is selected via pin strapping: shorting Pin 2 to Pin 1 and Pin 7 to Pin 8 configures G = 10; no connections yield G = 100. The reference pin (Pin 1) sets output common-mode level and supports external offset adjustment without degrading CMRR or gain accuracy.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Options | Fixed G = 10 or G = 100 via pin strap; no external resistor required |
| Gain Error | 0.04% max at G = 100, RL = 50kΩ - ensures <±4mV error in 10V full-scale systems |
| Input Offset Voltage | 160 µV max - enables sub-0.1°C resolution in thermistor bridges |
| Supply Current | 105 µA max - supports >1-year battery life in 10µA-average IoT sensor nodes |
| Min Supply Voltage | 1.8 V - operates directly from single lithium cell or two Ni-Cd batteries |
| CMRR | 100 dB min at G = 100 - rejects >100:1 common-mode interference in noisy industrial environments |
| 0.1Hz–10Hz Noise | 0.9 µVp-p typ - critical for low-frequency strain gauge and thermocouple signal integrity |
Pinout & Package
Package: 8-lead PDIP (N8), 0.300" wide, JEDEC MS-001, θJA = 130°C/W, TJMAX = 150°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (REF) | Reference Input | Sets output common-mode voltage; enables single-supply ground-referenced output swing |
| Pin 2 (–IN) | Inverting Input | Differential input terminal; accepts signals down to ground on single supply |
| Pin 3 (OUT) | Output | Drives ±10V into 2kΩ load; sinks current to ground without pull-down resistors |
| Pin 4 (GND) | Ground / Case | Ground reference for REF pin and internal bias network |
| Pin 5 (V–) | Negative Supply | Accepts 0V (single supply) or negative rail up to –22V |
| Pin 6 (+IN) | Noninverting Input | Differential input terminal; matches –IN for balanced bridge interface |
| Pin 7 (NC) | No Connect (G = 100) | Shorted to Pin 8 for G = 10 configuration only |
| Pin 8 (V+) | Positive Supply | Accepts 1.8V to +22V; supports ultralow-voltage battery operation |
Key Features
| Feature | Design Value |
|---|---|
| Micropower Operation | 75 µA typical supply current enables multi-year battery life in remote sensors |
| Single-Supply Ground Swing | Output sinks to within 1 mV of ground - eliminates need for pull-down resistors or negative rails |
| Fixed-Gain Architecture | Internal laser-trimmed 90R/9R network ensures stable G = 10 or 100 without external components |
| Rail-to-Rail Common-Mode Range | Inputs operate from V– to (V+ – 1V); supports direct connection to unbuffered bridge outputs |
| High Input Impedance | 7 GΩ differential, 4 GΩ common-mode - minimizes loading on high-Z transducers like thermistors |
Applications
| Thermocouple Signal Conditioning | Strain Gauge Bridge Amplifier |
|---|---|
Use Scenario: Amplifying µV-level thermocouple outputs in portable temperature loggers with 3.3V MCU supply. IC Role / Device Role / Timing Role: Precision differential amplifier with cold-junction compensation interface and 1.8V operation. Use Value: 0.9 µVp-p low-frequency noise and 0.4 µV/°C offset drift enable ±0.25°C accuracy over 0–100°C range. | Use Scenario: Reading quarter-bridge strain gauges in structural health monitoring nodes powered by coin cells. IC Role / Device Role / Timing Role: Micropower instrumentation amplifier driving 12-bit SAR ADC with rail-to-rail input common-mode range. Use Value: 105 µA supply current and 1.8V minimum supply extend battery life beyond 2 years at 1-sample/minute duty cycle. |
| 4–20 mA Loop Receiver | Remote Temperature Sensor Node |
Use Scenario: Converting loop current to voltage in hazardous-area field instruments with intrinsic safety constraints. IC Role / Device Role / Timing Role: Low-power, high-CMRR front-end converting 4–20 mA to 0.2–1.0V for isolation amplifier input. Use Value: 100 dB CMRR at G = 100 rejects ground-loop noise in long cable runs; 160 µV offset avoids zero-point calibration. | Use Scenario: Battery-operated environmental sensor measuring ambient temperature via LM134-based current source. IC Role / Device Role / Timing Role: Fixed-gain (G = 10) amplifier interfacing 10 mV/°C transducer output to ultra-low-power MCU ADC. Use Value: Guaranteed 1.8V operation and 8 ppm gain nonlinearity ensure ±0.5°C accuracy across –25°C to +70°C without recalibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar instrumentation amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD620ARZ | External gain resistor required; 1250 µA supply current; no guaranteed 1.8V operation | Higher power consumption limits battery life; requires PCB layout space for gain resistor | Select when higher bandwidth (120 kHz) and lower noise (9 nV/√Hz) outweigh micropower needs |
| LTC6915CMS8 | Digital gain control (1–100×); 125 µA supply current; SPI interface adds complexity | Requires microcontroller GPIO/SPI; not pin-compatible; unsuitable for passive analog-only designs | Select when programmable gain is needed and system already includes SPI-capable controller |
Compared with AD620ARZ and LTC6915CMS8, the LT1101ACN8 uniquely combines true micropower operation (≤105 µA), fixed-gain simplicity, and verified 1.8V functionality - making it irreplaceable for maintenance-free, single-cell-powered sensor front-ends where layout area and power budget are constrained.
Availability
LT1101ACN8 is available at Aetrix Electronics and suitable for industrial sensor conditioning, battery-powered data loggers, and 4–20 mA loop receiver circuits requiring stable component supply across extended product lifecycles.
Supply support for LT1101ACN8 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 legacy support for its precision analog portfolio.
The LT1101 belongs to Linear's micropower instrumentation amplifier product line, designed specifically for ultra-low-power, single-supply sensor signal conditioning in portable and remote measurement systems.
FAQ
What is the minimum supply voltage supported by the LT1101ACN8?
The LT1101ACN8 is guaranteed to operate at 1.8V supply voltage across its full 0°C to 70°C temperature range, with minimal degradation in gain accuracy or CMRR. This specification is validated per Note 5 in the official datasheet and enables direct use with single lithium cells or two Ni-Cd batteries without voltage boosting.
How do I configure the LT1101ACN8 for G = 10 versus G = 100?
To configure the LT1101ACN8 for G = 10, short Pin 2 to Pin 1 and Pin 7 to Pin 8. For G = 100, leave Pins 2 and 7 unconnected - the device defaults to high-gain mode. Both configurations retain full specifications including 0.04% max gain error and 100 dB CMRR, as confirmed in the Electrical Characteristics table for LT1101AC grade.
Does the LT1101ACN8 require external components for basic operation?
No, the LT1101ACN8 requires no external gain-setting resistors or compensation networks for standard G = 10 or G = 100 operation. Only decoupling capacitors (0.1 µF ceramic near V+ and V– pins) are recommended. The internal laser-trimmed 90R/9R resistor network eliminates component count and layout variability - a key differentiator versus alternatives like AD620.
Can the LT1101ACN8 drive a 2kΩ load while maintaining specified gain accuracy?
Yes, the LT1101ACN8 guarantees ±10V output swing into a 2kΩ load with ≤0.055% gain error at G = 100 and ≤0.080% at G = 10, per the LT1101AC Electrical Characteristics table. Its output stage is explicitly characterized for this load condition, ensuring accuracy in real-world sensor interface circuits without additional buffering.
What is the maximum differential input voltage the LT1101ACN8 can tolerate?
The LT1101ACN8 supports ±36V maximum differential input voltage when operated with ±18V supplies, and ±30V with ±15V supplies, per Absolute Maximum Ratings. Its PNP input stage prevents input current runaway under overload - unlike NPN-input competitors that fail above ±1.3V differential - making it robust for industrial transducer interfaces subject to ESD or wiring faults.
LT1101ACN8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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 FAQ
1.How can I place an order for LT1101ACN8 through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1101ACN8 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 reliable?
The price and inventory of LT1101ACN8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1101ACN8 is usually 5 days.
3.What payment methods are accepted for LT1101ACN8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1101ACN8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1101ACN8?
LT1101ACN8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1101ACN8 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?
For technical support, including LT1101ACN8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1101ACN8 requirements.
6.How does Aetrix verify that LT1101ACN8 is sourced from the original manufacturer or authorized distributors?
All LT1101ACN8 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 meets industry standards.
7.What is the process for return or replacement of LT1101ACN8?
All LT1101ACN8 units undergo pre-shipment inspection (PSI). If there is an issue with LT1101ACN8, 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 part is unused and in its original packaging.
Return procedure for LT1101ACN8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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