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Analog Devices Inc. LTC1992-1IMS8#TRPBF
- Part No.:
- LTC1992-1IMS8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC1992-1IMS8#TRPBF.pdf
- Description:
- IC OPAMP DIFF 1 CIRCUIT 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,234
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Product details
Overview
LTC1992-1IMS8#TRPBF from Analog Devices (formerly Linear Technology) is a fixed-gain, fully differential amplifier with precise on-chip resistors delivering ±0.3% max gain error over –40°C to 85°C, 1 V/V differential gain, rail-to-rail output swing, and adjustable output common-mode voltage via VOCM pin. It operates from single 2.7V to dual ±5V supplies and serves as a precision single-ended-to-differential converter in data acquisition front-ends.
For engineers reviewing the LTC1992-1IMS8#TRPBF datasheet, LTC1992-1IMS8#TRPBF pinout, LTC1992-1IMS8#TRPBF application, or LTC1992-1IMS8#TRPBF equivalent, key selection criteria include guaranteed gain accuracy across temperature, VOCM-controlled level shifting capability, CLOAD-stable operation up to 10,000 pF, and MSOP-8 packaging for space-constrained signal conditioning designs.
Technical Context
The LTC1992-1IMS8#TRPBF implements a fully differential architecture with separate internal common-mode feedback to ensure balanced +OUT/–OUT phase response and suppress second-order harmonics. Its fixed 1× differential gain is set by laser-trimmed on-chip resistors, eliminating external component variation.
It features independent VOCM input that sets output common-mode voltage without affecting input common-mode range, enabling seamless interfacing between single-ended sources and differential-input ADCs. Input common-mode range extends from (–VS) – 0.1 V to (+VS) – 1.3 V, supporting rail-to-rail input signals.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 1 V/V (fixed, ±0.3% max error over –40°C to 85°C) |
| Supply Range | 2.7V single supply or ±5V dual supply - supports low-voltage portable and industrial systems |
| Output Swing | Rail-to-rail (e.g., 0.02V to 4.90V at 5V supply, 10kΩ load) - maximizes dynamic range into ADCs |
| Capacitive Load Stability | Stable with up to 10,000 pF - eliminates need for isolation resistors driving long traces or ADC input capacitance |
| Input Offset Voltage | ±2.5 mV max (input-referred) - ensures DC accuracy in precision sensor interfaces |
| Common-Mode Rejection | 55 dB min (input-referred, –0.1V to 3.7V input CM range) - maintains signal integrity under noisy ground conditions |
| Quiescent Current | 1.0 mA max - enables low-power operation in battery-powered instrumentation |
Pinout & Package
Package: 8-Lead Plastic MSOP (3 mm × 3 mm), –40°C to 85°C operating temperature range.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (–IN) | Inverting differential input | Accepts negative half of fully differential input signal; supports rail-to-rail common-mode range |
| 2 (VOCM) | Output common-mode control input | Sets average of +OUT and –OUT voltages independently; high-impedance (500 MΩ), low-bias (±2 pA) |
| 3 (+VS) | Positive supply rail | Connects to +2.7V to +5V (single) or +5V (dual); absolute max +12V |
| 4 (+OUT) | Positive differential output | Delivers amplified, phase-matched output; sinks/sources ≥10 mA |
| 5 (+IN) | Non-inverting differential input | Accepts positive half of fully differential input signal; matched to Pin 1 for CMRR |
| 6 (VMID) | Internal mid-supply reference | Provides stable 2.50 V ±60 mV (at 5V supply); used internally for biasing |
| 7 (–VS) | Negative supply rail | Connects to GND (single) or –5V (dual); absolute min –VS – 0.3V on all pins |
| 8 (–OUT) | Negative differential output | Complementary to +OUT; enables true differential signaling with >85 dB output balance |
Key Features
| Feature | Design Value |
|---|---|
| Precision fixed gain | 1 V/V with ±0.3% max gain error over full temperature range - eliminates calibration for gain-dependent systems |
| Adjustable output common mode | VOCM pin sets VOUTCM from (–VS) + 0.5 V to (+VS) – 1.3 V - enables level shifting between mismatched voltage domains |
| Ultra-stable gain | 3.5 ppm/°C gain tempco and 5 ppm long-term stability - preserves accuracy in unattended measurement systems |
| High output drive | 10 mA sourcing/sinking capability per output - directly drives ADC inputs or 50 Ω cables without buffers |
| Differential phase matching | Trimmed internal feedback path achieves <–85 dB output common-mode imbalance - critical for multichannel coherent sampling |
Applications
| Instrumentation Signal Conditioning | Industrial Data Acquisition Front-End |
|---|---|
Use Scenario: Amplifying low-level bridge sensor outputs before digitization in handheld multimeters or process transmitters. IC Role / Device Role / Timing Role: Fully differential amplifier converting single-ended sensor voltage to noise-immune differential signal for SAR ADC input. Use Value: ±0.3% gain accuracy and rail-to-rail swing preserve full-scale resolution; VOCM adjustment aligns output to ADC's common-mode requirement. |
Use Scenario: Driving 16-bit+ differential-input ADCs in PLC analog input modules operating from 24V rails with local 5V regulation. IC Role / Device Role / Timing Role: Precision level-shifting driver ensuring matched +OUT/–OUT timing and amplitude for accurate differential sampling. Use Value: 10,000 pF capacitive load stability eliminates external series resistors; 1.0 mA quiescent current supports low-power standby modes. |
| Medical ECG Analog Front-End | Test & Measurement Equipment |
Use Scenario: Buffering and converting isolated biopotential signals (e.g., from instrumentation amps) to differential format for high-SNR ADC conversion. IC Role / Device Role / Timing Role: Low-noise (45 nV/√Hz), low-offset differential driver maintaining signal fidelity in low-frequency (<1 kHz) physiological bands. Use Value: ±2.5 mV max input offset minimizes baseline drift; 55 dB CMRR rejects power-line interference coupled into patient leads. |
Use Scenario: Generating calibrated differential test signals in automated test equipment (ATE) stimulus cards requiring precise amplitude and phase control. IC Role / Device Role / Timing Role: Fixed-gain, low-distortion amplifier providing repeatable 1× differential output with <–85 dB output balance. Use Value: Laser-trimmed resistors ensure gain repeatability across units; 0.7 V/μs slew rate supports clean step response for transient testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fully differential amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8138ARMZ | Higher bandwidth (350 MHz vs. 3 MHz), higher supply current (20 mA vs. 1 mA), no integrated VOCM control - requires external resistor network for common-mode setting | Better suited for high-speed video or RF IF applications; less optimal for low-power, precision DC-coupled systems | Select AD8138ARMZ only when >100 MHz bandwidth is required and power budget allows 20× higher IQ |
| THS4561IRGET | Lower gain error (±0.03% vs. ±0.3%), lower noise (2.3 nV/√Hz vs. 45 nV/√Hz), but no fixed-gain option - requires external resistors for gain configuration | Ideal for ultra-high-precision, low-noise applications where board area permits external precision resistors | Choose THS4561IRGET when sub-0.1% gain error and <3 nV/√Hz noise are mandatory, and layout can accommodate 4 external 0.1% resistors |
Compared with AD8138ARMZ and THS4561IRGET, the LTC1992-1IMS8#TRPBF delivers superior integration for cost-sensitive, low-power, precision DC/low-frequency applications through its monolithic 1× gain, VOCM pin, and MSOP-8 footprint - eliminating external components while guaranteeing accuracy over temperature without trimming.
Availability
LTC1992-1IMS8#TRPBF is available at Aetrix Electronics and suitable for industrial data acquisition, medical instrumentation, and test equipment requiring stable component supply, long-term calibration integrity, and RoHS-compliant packaging.
Supply support for LTC1992-1IMS8#TRPBF 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 continues its legacy of high-performance analog ICs, emphasizing precision, reliability, and signal-chain integration for demanding applications.
The LTC1992 family was designed specifically for precision differential signal conditioning - addressing needs in data acquisition, sensor interfacing, and mixed-signal systems where gain accuracy, common-mode flexibility, and robustness against capacitive loads are critical.
FAQ
What is the guaranteed gain accuracy of the LTC1992-1IMS8#TRPBF over temperature?
The LTC1992-1IMS8#TRPBF guarantees ±0.3% maximum gain error across the full operating temperature range of –40°C to +85°C. This specification is achieved using laser-trimmed on-chip resistors and is explicitly validated per the datasheet's Electrical Characteristics table for the I-grade (industrial) version.
Can the LTC1992-1IMS8#TRPBF operate from a single 3.3V supply?
Yes, the LTC1992-1IMS8#TRPBF supports single-supply operation from 2.7V to 5V. At 3.3V, it delivers rail-to-rail output swing (typically 0.02V to 3.28V into 10kΩ), maintains ±0.3% gain accuracy, and draws ≤1.0 mA - making it suitable for 3.3V embedded systems interfacing with differential-input ADCs.
How does the VOCM pin function in the LTC1992-1IMS8#TRPBF?
The VOCM pin on the LTC1992-1IMS8#TRPBF directly sets the average voltage of the +OUT and –OUT outputs (VOUTCM), independent of input common-mode level. It accepts a DC voltage from (–VS) + 0.5 V to (+VS) – 1.3 V, has 500 MΩ input resistance, and draws only ±2 pA bias current - enabling precise level shifting without loading external references.
Is the LTC1992-1IMS8#TRPBF stable when driving large capacitive loads?
Yes, the LTC1992-1IMS8#TRPBF is specified stable with capacitive loads up to 10,000 pF, verified across all supply conditions and temperatures. This eliminates the need for series isolation resistors when driving ADC input capacitance, PCB traces, or coaxial cables - simplifying layout and preserving signal integrity.
What is the input common-mode voltage range for the LTC1992-1IMS8#TRPBF at 5V supply?
At a 5V single supply (+VS = 5V, –VS = 0V), the LTC1992-1IMS8#TRPBF supports an input common-mode voltage range from –0.1V to 4.9V. This rail-to-rail capability allows direct interfacing with sensors, DACs, or other circuitry operating near supply rails without attenuation or level shifting.
LTC1992-1IMS8#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Differential
- Number of Circuits:
- 1
- Output Type:
- Differential, Rail-to-Rail
- Slew Rate:
- 1.5V/µs
- Gain Bandwidth Product:
- 3.2 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 2 pA
- Voltage - Input Offset:
- 250 µV
- Current - Supply:
- 700µA
- Current - Output / Channel:
- 30 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 11 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
LTC1992-1IMS8#TRPBF FAQ
1.How can I place an order for LTC1992-1IMS8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1992-1IMS8#TRPBF 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 LTC1992-1IMS8#TRPBF reliable?
The price and inventory of LTC1992-1IMS8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1992-1IMS8#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC1992-1IMS8#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1992-1IMS8#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1992-1IMS8#TRPBF?
LTC1992-1IMS8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1992-1IMS8#TRPBF 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 LTC1992-1IMS8#TRPBF?
For technical support, including LTC1992-1IMS8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1992-1IMS8#TRPBF requirements.
6.How does Aetrix verify that LTC1992-1IMS8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC1992-1IMS8#TRPBF 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 LTC1992-1IMS8#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC1992-1IMS8#TRPBF?
All LTC1992-1IMS8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1992-1IMS8#TRPBF, 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 LTC1992-1IMS8#TRPBF part is unused and in its original packaging.
Return procedure for LTC1992-1IMS8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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