My Inquiry
My Account
Analog Devices Inc. LT1102CJ8
- Part No.:
- LT1102CJ8
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-CDIP (0.300", 7.62mm)
- Datasheet:
-
LT1102CJ8.pdf
- Description:
- IC INST AMP 1 CIRCUIT 8CERDIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,788
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LT1102CJ8 from Analog Devices (formerly Linear Technology) is a high-speed, precision JFET-input instrumentation amplifier in an 8-lead CERDIP package, fixed-gain version (G = 10 or 100), delivering 30V/μs slew rate, 35MHz gain-bandwidth product, and 0.05% max gain error - used for fast bridge amplification and multiplexed data acquisition with high source impedance sensors.
For engineers reviewing the LT1102CJ8 datasheet, LT1102CJ8 pinout, LT1102CJ8 application, or LT1102CJ8 equivalent, key selection criteria include guaranteed 0.01% gain accuracy at G=10/100, sub-40pA input bias current at 70°C, 3μs 0.01% settling time, ±15V supply operation, and CERDIP hermetic packaging for stable performance in industrial temperature range (0°C to 70°C).
Technical Context
The LT1102CJ8 employs a two-op-amp architecture with decompensated second-stage amplification optimized for G=10 stability, enabling high slew rate and bandwidth while maintaining CMRR >97dB at DC. Its FET input stage provides 10¹²Ω common-mode input resistance and eliminates output offset voltage contribution to total error.
Unlike bipolar-input competitors, the LT1102CJ8 exhibits no doubling of input bias current per 10°C rise; bias remains ≤40pA up to +70°C. Gain nonlinearity is specified at ≤16ppm (G=10, RL=50kΩ), and overdrive recovery is 400ns after 50% overdrive - critical for multiplexed sensor systems recovering from channel switching transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Slew Rate | 30 V/μs at G=10 - enables clean amplification of fast step inputs without distortion in data acquisition. |
| Gain-Bandwidth Product | 35 MHz - supports wideband signal conditioning up to ~3.5MHz at G=10 without phase loss. |
| Settling Time (0.01%) | 3 μs at G=10 - ensures accurate digitization of transient signals in multiplexed ADC front-ends. |
| Input Bias Current | 40 pA max at +70°C - preserves signal integrity from high-impedance bridges & photodetectors. |
| Gain Error | 0.05% max - eliminates need for system-level gain calibration in precision measurement applications. |
| Input Offset Voltage | 600 μV max (input + output referred) - contributes <0.006% error at ±10V output full scale. |
| Common-Mode Rejection | 98 dB typical at DC - rejects noise from unshielded industrial sensor wiring. |
Pinout & Package
LT1102CJ8 is housed in an 8-lead CERDIP (ceramic dual in-line package), hermetically sealed, 0.300-inch narrow body, suitable for extended reliability in industrial environments. Pin 1 is identified by a notch or dot; leads are tin-plated for solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (–IN) | Differential input node; referenced to internal gain-setting network for G=10/100. |
| 2 | Non-Inverting Input (+IN) | Main signal input; high-impedance FET node accepting ±10.5V common-mode range. |
| 3 | Reference Input (REF) | Output DC level set point; tied to ground or external reference to shift output baseline. |
| 4 | Negative Supply (V–) | Connects to –15V rail; also serves as case ground in metal-can variants (not applicable to CERDIP). |
| 5 | Output (OUT) | Single-ended amplified output capable of ±13.5V swing into 50kΩ load. |
| 6 | Positive Supply (V+) | Connects to +15V rail; supplies both input and output stages with low-noise biasing. |
| 7 | Gain Select (G=100) | Internally connected to configure fixed G=100; open or grounded for G=10 mode (per datasheet TA03). |
| 8 | NC / Gain Select (G=10) | No-connect in standard configuration; used with pin 7 to select gain via external resistor networks per AI02. |
Key Features
| Feature | Design Value |
|---|---|
| FET input stage | Enables ≤40pA input bias current at +70°C - essential for high-resistance sensor interfaces without drift-induced errors. |
| Fixed gain architecture (G=10/100) | Eliminates external gain-setting resistor, reducing layout sensitivity and improving long-term gain stability. |
| No output offset contribution | Removes output-stage offset from total error budget - simplifies system-level calibration and improves DC accuracy. |
| Indefinite output short-circuit duration | Allows safe operation during test, fault, or probe contact events without latch-up or damage. |
| 18pF compensation option (pin 1–2) | Restores CMRR >80dB up to 30kHz in G=100 mode - maintains rejection of high-frequency common-mode noise. |
Applications
| Bridge Amplifier | Multiplexed Data Acquisition |
|---|---|
Use Scenario: Amplifying mV-level outputs from strain gauge or pressure transducer Wheatstone bridges with <1Hz lowpass filtering. IC Role / Device Role / Timing Role: Precision differential-to-single-ended conversion with fixed gain, rejecting common-mode noise from long sensor cables. Use Value: 0.01% gain accuracy and 98dB CMRR ensure sub-0.1% measurement error even with 10Ω lead resistance imbalance. | Use Scenario: Sequential sampling of 4+ high-impedance sensor channels using analog multiplexer before ADC. IC Role / Device Role / Timing Role: Channel-isolated gain stage with 3μs 0.01% settling - matches 330kHz throughput of high-speed SAR ADCs. Use Value: 400ns overdrive recovery prevents settling delay after multiplexer glitches, preserving effective sampling rate. |
| Photodetector Signal Conditioning | Capacitive Sensor Interface |
Use Scenario: Amplifying low-current outputs from photodiodes or phototransistors in optical encoders or spectrometers. IC Role / Device Role / Timing Role: Low-noise, high-Z transimpedance preamplifier stage with 37nV/√Hz input voltage noise at 10Hz. Use Value: 40pA input bias current avoids loading pA-level photocurrents, preserving dynamic range and SNR. | Use Scenario: Reading variable capacitance from MEMS accelerometers or humidity sensors using charge-transfer techniques. IC Role / Device Role / Timing Role: High-input-impedance buffer and gain stage driving switched-capacitor front-end circuits. Use Value: 10¹²Ω input resistance prevents RC time constant degradation, enabling accurate kHz-range modulation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar instrumentation amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8429ARZ | Lower input bias current (0.6pA typ), higher CMRR (140dB), but slower settling (8μs @ 0.01%) and no CERDIP option. | Better for ultra-low-drift lab equipment; less suitable for high-throughput industrial DAQ requiring <4μs settling. | Select AD8429ARZ when ultimate DC precision outweighs speed; verify PCB footprint compatibility (SOIC-8 vs CERDIP-8). |
| INA128U | Slower slew rate (1.5V/μs), wider supply range (±2.25V to ±18V), lower cost, but higher gain error (0.05% typ, not max) and no guaranteed 40pA bias at 70°C. | Preferred for battery-powered portable instruments where power efficiency and supply flexibility matter more than speed. | Choose INA128U for cost-sensitive, low-power designs; confirm thermal derating of bias current in elevated ambient conditions. |
Compared with AD8429ARZ and INA128U, the LT1102CJ8 uniquely balances 30V/μs slew rate, 40pA input bias at +70°C, and hermetic CERDIP packaging - making it optimal for ruggedized, high-speed industrial sensor signal chains where reliability and transient fidelity are co-prioritized.
Availability
LT1102CJ8 is available at Aetrix Electronics and suitable for bridge amplifier systems, multiplexed data acquisition modules, photodetector front-ends, and capacitive sensor interfaces requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for LT1102CJ8 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 and control.
The LT1102 product line was designed specifically for high-speed, high-accuracy instrumentation in harsh industrial environments - emphasizing FET-input stability, fast settling, and robust input protection without sacrificing DC precision.
FAQ
What is the operating temperature range for the LT1102CJ8?
The LT1102CJ8 is rated for 0°C to +70°C ambient operation, matching the "C" grade designation. This range is validated per datasheet Section "Absolute Maximum Ratings" and confirmed in Electrical Characteristics tables for LT1102C/LT1102AC. The CERDIP package provides thermal stability within this envelope, and supply current remains ≤5.6mA across the full range.
Does the LT1102CJ8 require external components to set gain?
No, the LT1102CJ8 does not require external gain-setting resistors. It offers factory-trimmed fixed gains of 10 and 100, with gain error specified at 0.05% maximum. Pin configuration (e.g., grounding pin 7) selects the gain mode per datasheet Figure TA03. This eliminates resistor tolerance, thermal drift, and layout sensitivity - a core design advantage of the LT1102CJ8.
Can the LT1102CJ8 drive heavy capacitive loads?
Yes, the LT1102CJ8 can drive up to 2.2nF capacitive loads without oscillation, as verified in Typical Performance Characteristic TPC08. For loads >1nF, series output resistance (e.g., 10–50Ω) is recommended to maintain phase margin. The device's ability to drive 2.2nF is explicitly documented in the "Typical Application" section and distinguishes it from many competing instrumentation amplifiers.
What is the input voltage range specification for the LT1102CJ8?
The LT1102CJ8 supports a differential input voltage range of ±40V and a common-mode input voltage range of ±20V (with ±15V supplies). Per datasheet Absolute Maximum Ratings and Electrical Characteristics, the input stage tolerates overvoltage clamping down to V– – 0.7V and up to V+ + 0.7V, enabling robust operation in noisy industrial settings without external protection circuitry.
Is the LT1102CJ8 pin-compatible with other LT1102 variants like LT1102CN8?
Yes, the LT1102CJ8 is pin-compatible with LT1102CN8 (PDIP) and LT1102ACH (TO-5 metal can) - all share identical 8-pin topology, pin functions, and electrical behavior. However, thermal resistance (θJA) differs: CERDIP (J8) is 130°C/W, PDIP (N8) is 100°C/W, and TO-5 (H) is 60°C/W. Layout and heatsinking must be adapted accordingly for equivalent thermal performance.
LT1102CJ8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-CDIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- Instrumentation
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 30V/µs
- Gain Bandwidth Product:
- 3.5 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-CERDIP
LT1102CJ8 FAQ
1.How can I place an order for LT1102CJ8 through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1102CJ8 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 LT1102CJ8 reliable?
The price and inventory of LT1102CJ8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1102CJ8 is usually 5 days.
3.What payment methods are accepted for LT1102CJ8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1102CJ8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1102CJ8?
LT1102CJ8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1102CJ8 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 LT1102CJ8?
For technical support, including LT1102CJ8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1102CJ8 requirements.
6.How does Aetrix verify that LT1102CJ8 is sourced from the original manufacturer or authorized distributors?
All LT1102CJ8 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 LT1102CJ8 meets industry standards.
7.What is the process for return or replacement of LT1102CJ8?
All LT1102CJ8 units undergo pre-shipment inspection (PSI). If there is an issue with LT1102CJ8, 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 LT1102CJ8 part is unused and in its original packaging.
Return procedure for LT1102CJ8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LT1102CJ8 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…
