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Analog Devices Inc. LTC1992-1CMS8#PBF
- Part No.:
- LTC1992-1CMS8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC1992-1CMS8#PBF.pdf
- Description:
- IC OPAMP DIFF 1 CIRCUIT 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:12,767
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Product details
Overview
LTC1992-1CMS8#PBF from Analog Devices (formerly Linear Technology) is a fixed-gain, fully differential amplifier with precise on-chip resistors delivering 1× differential gain, ±0.3% max gain error over –40°C to 85°C, rail-to-rail output swing, and independent VOCM-controlled common-mode level setting. 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 LTC1992-1CMS8#PBF datasheet, LTC1992-1CMS8#PBF pinout, LTC1992-1CMS8#PBF application, or LTC1992-1CMS8#PBF equivalent, key selection criteria include guaranteed gain accuracy, CLOAD-stable operation up to 10,000pF, low 1mA max supply current, and MSOP-8 package compatibility with space-constrained signal conditioning designs.
Technical Context
The LTC1992-1CMS8#PBF implements a fully differential architecture with separate internal common-mode feedback for phase-balanced outputs and reduced second-order harmonics. Its VOCM pin sets output common-mode voltage independently of input common-mode range, enabling seamless level shifting between mixed-supply systems.
It features precision trimmed on-chip resistor networks that fix differential gain at exactly 1 V/V with ±0.1% typical gain error and 3.5 ppm/°C temperature coefficient. Input common-mode range extends from (–VS – 0.1V) to (+VS – 1.3V), supporting rail-to-rail operation across its full supply range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Differential Gain | 1 V/V, fixed by laser-trimmed on-chip resistors for stable, predictable signal scaling |
| Gain Error (Max) | ±0.3% over –40°C to 85°C, ensuring consistent amplitude fidelity in production environments |
| Supply Range | 2.7V single or ±5V dual, enabling use in low-voltage portable and industrial bipolar systems |
| Output Swing | Rail-to-rail, delivering >4.75V p-p into 10kΩ load at 5V supply for maximum dynamic range |
| Capacitive Load Stability | Stable with up to 10,000pF, eliminating need for external isolation resistors in ADC driver applications |
| Supply Current (Max) | 1.0 mA at 5V, supporting low-power battery-operated instrumentation |
| Input Offset Voltage (Max) | ±2.5 mV, minimizing DC error in precision sensor interface chains |
Pinout & Package
Package: 8-lead plastic MSOP (3mm × 3mm), RoHS-compliant, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (–IN) | Inverting differential input | Accepts complementary input signal; supports rail-to-rail common-mode range |
| 2 (VOCM) | Output common-mode control | Sets output midpoint voltage independently-critical for interfacing with ADCs requiring specific VCM |
| 3 (+VS) | Positive supply | Connects to +2.7V to +5V (single) or +5V (dual); decoupling required near pin |
| 4 (+OUT) | Positive differential output | Delivers amplified, phase-matched output; drives capacitive loads up to 10nF |
| 5 (+IN) | Non-inverting differential input | Accepts complementary input signal; matched impedance to Pin 1 for CMRR optimization |
| 6 (VMID) | Internal mid-supply reference | Provides buffered 2.5V (at 5V supply); used for biasing or as reference in single-supply configurations |
| 7 (–VS) | Negative supply | Connects to ground (single) or –5V (dual); must be decoupled locally |
| 8 (–OUT) | Negative differential output | Complementary to Pin 4; maintains <100μV output balance error over frequency |
Key Features
| Feature | Design Value |
|---|---|
| Precision fixed gain of 1 | Laser-trimmed thin-film resistors ensure ±0.1% typical gain error and 3.5 ppm/°C drift-no external gain-setting components needed |
| Independent VOCM control | Enables output level shifting without affecting input biasing-essential for bridging single-ended sensors to differential-input ADCs |
| Rail-to-rail output drive | Sinks/sources ≥10 mA while maintaining full swing, supporting direct connection to SAR and sigma-delta ADC inputs |
| CLOAD-stable architecture | Operates unconditionally stable with 0–10,000pF loads-eliminates stability concerns in PCB layout and system integration |
| Low power consumption | 1.0 mA max supply current at 5V enables high-channel-count data loggers and portable test equipment |
Applications
| Instrumentation Amplifier Front-End | High-Resolution Data Acquisition |
|---|---|
Use Scenario: Conditioning low-level bridge sensor outputs before digitization in industrial pressure transmitters. IC Role / Device Role / Timing Role: Fully differential amplifier providing gain = 1, rejecting common-mode noise while preserving signal integrity. Use Value: ±0.3% gain error and <2.5mV offset ensure sub-0.1% measurement accuracy across temperature without calibration. | Use Scenario: Driving 18-bit SAR ADC inputs in medical ECG front-ends requiring ultra-low distortion. IC Role / Device Role / Timing Role: Single-ended-to-differential converter with VOCM-adjustable output common mode matching ADC requirements. Use Value: 10,000pF load stability and rail-to-rail swing maximize SNR by utilizing full ADC input range without external buffers. |
| Level-Shifting Interface | Multichannel Synchronized Sampling |
Use Scenario: Interfacing ±10V industrial analog outputs to 3.3V-domain differential ADCs in PLC I/O modules. IC Role / Device Role / Timing Role: Level-shifting differential driver translating bipolar signals to unipolar common-mode ranges. Use Value: VOCM pin allows precise setting of 1.65V output common mode-enabling seamless compatibility with 3.3V ADC references. | Use Scenario: Simultaneous sampling of multiple sensor channels in vibration analysis systems. IC Role / Device Role / Timing Role: Precision gain = 1 buffer with trimmed phase response across channels. Use Value: Matched propagation delay and <100μV output balance error preserve channel-to-channel timing alignment for coherent FFT analysis. |
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 | Fixed gain = 1, but higher 20mA supply current; no VMID pin; requires external gain resistors for non-unity gains | Higher power dissipation limits density in multi-channel systems; lacks integrated mid-supply reference | Select when higher slew rate (1000 V/μs) is required for fast transient response, accepting higher quiescent current |
| THS4561IRGET | Adjustable gain via external resistors; 1.8mA supply current; no VMID; lower 0.25mV max offset | Requires external precision resistors to achieve unity gain; less integrated for simple level-shift use cases | Select when design flexibility across multiple gains is needed, and board area permits two external 0.1% resistors |
Compared with AD8138ARMZ and THS4561IRGET, the LTC1992-1CMS8#PBF offers lower power (1mA vs ≥1.8mA), integrated VMID reference, and guaranteed ±0.3% gain error without external components-making it optimal for compact, low-power, fixed-gain differential signal conditioning.
Availability
LTC1992-1CMS8#PBF is available at Aetrix Electronics and suitable for industrial instrumentation, medical data acquisition, and test & measurement equipment requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for LTC1992-1CMS8#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. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC1992 family was designed specifically for precision, low-power, fully differential signal conditioning-targeting applications where gain accuracy, phase matching, and load-drive capability are critical in space- and power-constrained systems.
FAQ
What is the guaranteed gain accuracy of the LTC1992-1CMS8#PBF over temperature?
The LTC1992-1CMS8#PBF guarantees ±0.3% maximum differential gain error over the full operating temperature range of –40°C to 85°C. This specification is ensured by factory laser trimming of internal thin-film resistors and is explicitly validated per the device's electrical characteristics table for the "LTC1992-1" variant under all C and I grade conditions.
Can the LTC1992-1CMS8#PBF drive a 10,000pF capacitive load without oscillation?
Yes, the LTC1992-1CMS8#PBF is explicitly characterized and guaranteed stable with capacitive loads up to 10,000pF across all supply voltages and temperatures. This is confirmed in the "Features" section and Electrical Characteristics table, eliminating the need for external series resistors or compensation networks in ADC driver or filter interface applications.
What is the function of the VMID pin on the LTC1992-1CMS8#PBF?
Pin 6 (VMID) on the LTC1992-1CMS8#PBF provides a buffered, low-impedance mid-supply voltage reference-typically 2.5V when operated from a 5V single supply. It is internally generated and can be used to bias single-ended sources or serve as a stable reference for external circuitry, reducing component count in level-shifting configurations.
Does the LTC1992-1CMS8#PBF support dual-supply operation?
Yes, the LTC1992-1CMS8#PBF supports dual-supply operation up to ±5V, as specified in the Absolute Maximum Ratings and Electrical Characteristics tables. It maintains full rail-to-rail input common-mode range and differential output swing under dual-supply conditions, making it suitable for legacy ±5V industrial signal chains.
What is the maximum supply current for the LTC1992-1CMS8#PBF at 2.7V?
The maximum supply current for the LTC1992-1CMS8#PBF at 2.7V is 1.0 mA, as specified in the Electrical Characteristics table under "IS Supply Current" for "ALL C AND I GRADE" at VS = 2.7V. This value applies across the full operating temperature range and ensures predictable low-power operation in battery-powered systems.
LTC1992-1CMS8#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- 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:
- -
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 11 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
LTC1992-1CMS8#PBF FAQ
1.How can I place an order for LTC1992-1CMS8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1992-1CMS8#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 LTC1992-1CMS8#PBF reliable?
The price and inventory of LTC1992-1CMS8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1992-1CMS8#PBF is usually 5 days.
3.What payment methods are accepted for LTC1992-1CMS8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1992-1CMS8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1992-1CMS8#PBF?
LTC1992-1CMS8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1992-1CMS8#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 LTC1992-1CMS8#PBF?
For technical support, including LTC1992-1CMS8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1992-1CMS8#PBF requirements.
6.How does Aetrix verify that LTC1992-1CMS8#PBF is sourced from the original manufacturer or authorized distributors?
All LTC1992-1CMS8#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 LTC1992-1CMS8#PBF meets industry standards.
7.What is the process for return or replacement of LTC1992-1CMS8#PBF?
All LTC1992-1CMS8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1992-1CMS8#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 LTC1992-1CMS8#PBF part is unused and in its original packaging.
Return procedure for LTC1992-1CMS8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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