My Inquiry
My Account
Analog Devices Inc. LT1102CN8#PBF
- Part No.:
- LT1102CN8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
LT1102CN8#PBF.pdf
- Description:
- IC INST AMP 1 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:230
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LT1102CN8#PBF from Analog Devices (formerly Linear Technology) is a high-speed, precision JFET-input instrumentation amplifier in an 8-lead PDIP package with fixed gains of 10 or 100. It delivers 30V/μs slew rate, 35MHz gain-bandwidth product, 3μs settling time to 0.01%, and ±150mA output drive capability-optimized for fast analog signal processing in data acquisition and sensor conditioning systems.
For engineers reviewing the LT1102CN8#PBF datasheet, LT1102CN8#PBF pinout, LT1102CN8#PBF application, or LT1102CN8#PBF equivalent, key selection criteria include guaranteed gain accuracy (0.05% max), ultra-low input bias current (40pA max at 70°C), <180μV input offset voltage, and robust ±40V differential input rating-critical for high-impedance bridge and photodetector interfaces.
Technical Context
The LT1102CN8#PBF uses a two-op-amp architecture with decompensated second-stage amplification for G = 10 stability, enabling high slew rate and bandwidth while maintaining CMRR >98dB at DC. Its FET input stage ensures minimal input bias current drift (<0.5pA/°C to 70°C) and no doubling per 10°C rise-unlike bipolar-input competitors.
Gain is factory-set to 10 or 100 via internal resistor networks (90R/9R topology); no external gain-setting resistor is required. For G = 100, a 18pF capacitor between pins 1 and 2 improves CMRR by 10× from 200Hz–30kHz, addressing frequency-dependent rejection limitations inherent in fixed-gain topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Slew Rate | 30 V/μs at G = 10 - enables clean 20V step response within 3μs to 0.01% error |
| Gain-Bandwidth Product | 35 MHz - supports stable closed-loop operation up to 3.5MHz at G = 10 |
| Settling Time (0.01%) | 3 μs for 20V step - meets timing requirements in multiplexed DAQ systems sampling at ≥300kSPS |
| Input Bias Current | 40 pA max at 70°C - preserves signal integrity from >1GΩ source impedances (e.g., piezoelectric sensors) |
| Gain Error | 0.05% max - eliminates need for system-level gain calibration in precision bridge measurements |
| Input Offset Voltage | 600 μV max (input + output referred) - contributes <0.006% error in ±10V full-scale applications |
| Common-Mode Rejection | 98 dB at DC - rejects noise from unshielded industrial wiring without additional filtering |
| Supply Voltage Range | ±20 V - accommodates overvoltage transients and wide dynamic range sensor outputs |
Pinout & Package
LT1102CN8#PBF is housed in an 8-lead plastic dual in-line package (PDIP, N8), 0.300-inch width, with standard through-hole mounting and RoHS-compliant lead finish (#PBF).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (–IN) | Differential input node; accepts signals referenced to ground or REF; rated for ±40V differential input |
| 2 | Non-Inverting Input (+IN) | Differential input node; high-impedance JFET input (≥10¹² Ω) minimizes loading on high-Z sources |
| 3 | Reference Input (REF) | Output common-mode level setting node; tied to ground for single-ended output at mid-supply |
| 4 | Negative Supply (V–) | Connects to –15V (or –20V max); case is internally connected to V– in N8 package |
| 5 | Output (OUT) | Capable of ±150mA short-circuit current; drives 75Ω loads to 330kHz with ±10V swing |
| 6 | Positive Supply (V+) | Connects to +15V (or +20V max); supplies both input and output stages |
| 7 | Ground (GND) | Power ground reference; separate from REF to avoid ground loop errors in precision layouts |
| 8 | NC | No internal connection; left unconnected per datasheet - not used for gain configuration |
Key Features
| Feature | Design Value |
|---|---|
| Fixed G = 10 / G = 100 operation | Eliminates external gain resistor tolerance errors and layout sensitivity; simplifies BOM and layout |
| FET input stage with 40pA IB max | Enables direct interfacing with capacitive sensors, photodiodes, and high-resistance bridges without signal degradation |
| ±40V differential input rating | Withstands transient overloads common in industrial field wiring without clamping diodes or external protection |
| Indefinite output short-circuit duration | Allows safe operation during test, fault, or hot-plug conditions without thermal shutdown or latch-up |
| 18pF pin-1-to-pin-2 compensation | Restores CMRR above 200Hz in G = 100 mode-critical for AC-coupled sensor signals in noisy environments |
| 0.01% gain accuracy (typical) | Reduces system calibration burden in medical and test equipment requiring traceable measurement uncertainty |
Applications
| Bridge Amplifier | Multiplexed DAQ System |
|---|---|
Use Scenario: Amplifying low-level mV outputs from strain gauge or load cell bridges under industrial vibration and EMI. IC Role / Device Role / Timing Role: Precision front-end instrumentation amplifier providing fixed G = 100 gain, rejecting common-mode noise from long cable runs. Use Value: 98dB CMRR and <180μV offset enable sub-0.01% linearity in 24-bit weigh scale systems without trimming. | Use Scenario: Sequentially sampling 4+ differential sensor channels using analog switches before ADC conversion. IC Role / Device Role / Timing Role: High-speed buffer and gain stage placed after multiplexer to settle before ADC aperture time. Use Value: 3μs settling to 0.01% allows ≥300kSPS effective throughput with minimal inter-channel crosstalk. |
| Photodetector Interface | High-Impedance Capacitive Sensor |
Use Scenario: Conditioning current-mode output from photodiode arrays in optical analyzers or spectrometers. IC Role / Device Role / Timing Role: Transimpedance-capable instrumentation amplifier converting photocurrent to voltage with minimal input loading. Use Value: 40pA input bias current prevents baseline shift in pA-level photodiode currents across temperature. | Use Scenario: Reading capacitance changes in MEMS accelerometers or humidity sensors with guard-driven traces. IC Role / Device Role / Timing Role: Ultra-high-Z input amplifier preserving signal integrity from >100MΩ sensor impedances. Use Value: 10¹² Ω input resistance and <3ppm nonlinearity maintain resolution in sub-fF capacitance measurements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar instrumentation amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8429ARZ | G = 100 only; 50V/μs slew rate; 5.5nV/√Hz voltage noise; requires external gain resistor for G ≠ 100 | Better noise performance but lacks G = 10 option and fixed-gain simplicity | Select AD8429ARZ when ultra-low noise dominates over gain flexibility and board space |
| INA128UA | G = 1–10,000 via external resistor; 0.4V/μs slew rate; 125μV offset; bipolar input (2nA IB) | Wider gain range but 50× higher input bias current limits high-Z sensor use | Select INA128UA when variable gain and cost sensitivity outweigh speed and input impedance needs |
Compared with AD8429ARZ and INA128UA, LT1102CN8#PBF uniquely combines fixed high-speed gain (G = 10/100), sub-40pA input bias, and ±40V differential input tolerance-making it optimal for uncalibrated, high-impedance, high-transient industrial sensing where layout simplicity and overload robustness are mandatory.
Availability
LT1102CN8#PBF is available at Aetrix Electronics and suitable for precision bridge amplification, multiplexed data acquisition, photodetector interfacing, and high-impedance capacitive sensing applications requiring stable component supply across extended production lifecycles.
Supply support for LT1102CN8#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, Inc. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing ICs for precision measurement, power management, and signal chain applications.
The LT1102 belongs to Linear's legacy high-speed instrumentation amplifier product line, engineered specifically for applications demanding simultaneous precision, speed, and ruggedness in harsh industrial and test environments-prioritizing gain stability, input protection, and temperature-invariant bias performance.
FAQ
What is the maximum operating temperature range for LT1102CN8#PBF?
The LT1102CN8#PBF is rated for 0°C to 70°C ambient operation (C-grade). This is confirmed in the Absolute Maximum Ratings table, where LT1102C specifies 0°C to 70°C, and the N8 package is designated for commercial temperature versions. Industrial-grade variants (e.g., LT1102IN8) extend to –40°C to 85°C, but LT1102CN8#PBF itself is strictly commercial grade.
Does LT1102CN8#PBF require external components to set gain?
No, LT1102CN8#PBF does not require external components to set gain. It is factory-configured for fixed gains of 10 or 100 using internal laser-trimmed resistor networks (90R/9R topology). The datasheet explicitly states "No external gain setting resistor is required," and pin 8 is NC-not used for gain configuration. Gain selection is determined at manufacture and cannot be altered in-circuit.
Can LT1102CN8#PBF drive heavy capacitive loads like 2.2nF?
Yes, LT1102CN8#PBF is characterized to drive 2.2nF capacitive loads without oscillation, as documented in Typical Performance Characteristics (TPC08). At G = 10, overshoot remains below 20% up to 100nF; at G = 100, stability is maintained up to 10nF. For 2.2nF, the device exhibits <5% overshoot and settles within specification-enabling direct interface with ADC input capacitors or long cables without isolation resistors.
What is the input common-mode voltage range for LT1102CN8#PBF?
The input common-mode voltage range for LT1102CN8#PBF is –11V to +11.5V with ±15V supplies, as specified in the Electrical Characteristics table (page 3). This range is asymmetric due to internal topology and exceeds rail-to-rail capability-allowing inputs to swing 1.5V beyond the negative rail and 1.5V short of the positive rail, critical for interfacing with grounded sensors in split-supply systems.
Is LT1102CN8#PBF pin-compatible with other LT1102 variants like LT1102IN8 or LT1102ACN8?
Yes, LT1102CN8#PBF is pin-compatible with all N8-package variants including LT1102IN8 and LT1102ACN8. All share identical 8-lead PDIP (N8) mechanical dimensions, pin numbering, and terminal functions per the Top View diagrams (pages 2 and 12). Differences are limited to temperature grade (C vs I vs AC) and screening-electrical pinout, supply connections, and gain configuration are functionally identical across N8 variants.
LT1102CN8#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:
- 30V/µs
- Gain Bandwidth Product:
- 35 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 4 pA
- Voltage - Input Offset:
- 200 µV
- Current - Supply:
- 3.4mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 18 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
LT1102CN8#PBF FAQ
1.How can I place an order for LT1102CN8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1102CN8#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 LT1102CN8#PBF reliable?
The price and inventory of LT1102CN8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1102CN8#PBF is usually 5 days.
3.What payment methods are accepted for LT1102CN8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1102CN8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1102CN8#PBF?
LT1102CN8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1102CN8#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 LT1102CN8#PBF?
For technical support, including LT1102CN8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1102CN8#PBF requirements.
6.How does Aetrix verify that LT1102CN8#PBF is sourced from the original manufacturer or authorized distributors?
All LT1102CN8#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 LT1102CN8#PBF meets industry standards.
7.What is the process for return or replacement of LT1102CN8#PBF?
All LT1102CN8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1102CN8#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 LT1102CN8#PBF part is unused and in its original packaging.
Return procedure for LT1102CN8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LT1102CN8#PBF Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
