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Analog Devices Inc. LTC6087CMS8#TRPBF
- Part No.:
- LTC6087CMS8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC6087CMS8#TRPBF.pdf
- Description:
- IC CMOS 2 CIRCUIT 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,832
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Product details
Overview
LTC6087CMS8#TRPBF from Analog Devices is a dual-channel, rail-to-rail input/output CMOS operational amplifier optimized for high-impedance sensor signal conditioning. It delivers 14MHz gain bandwidth, 7.2V/µs slew rate, 1pA typical input bias current at 25°C, 0.75mV max offset voltage, and operates from 2.7V to 5.5V supply - enabling precision amplification in portable medical sensors and low-power data acquisition systems.
For engineers reviewing the LTC6087CMS8#TRPBF datasheet, LTC6087CMS8#TRPBF pinout, LTC6087CMS8#TRPBF application, or LTC6087CMS8#TRPBF equivalent, key selection criteria include its guaranteed 1pA input bias current at 25°C, shutdown current of 2.3µA per amplifier, rail-to-rail output swing within 30mV of rails, ±5µV/°C max offset drift, and MS8 package compatibility with space-constrained PCB layouts.
Technical Context
The LTC6087CMS8#TRPBF uses complementary PMOS/NMOS input pairs to achieve true rail-to-rail input common-mode range (V– to V+), with seamless transition between transistor types near 0.9V–1.3V below V+. Its class AB output stage delivers 45mA short-circuit current while maintaining 30mV rail proximity under no-load conditions.
Internal ESD protection diodes define the 1pA input bias current as temperature- and common-mode–dependent leakage; performance is optimized in the leaded MS8 package to avoid flux-induced leakage paths present in DFN variants. Shutdown logic is active-low but absent in MS8 - only available in DD-package variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 14MHz - supports stable unity-gain operation up to 14MHz, suitable for anti-aliasing filters and fast sensor signal chains. |
| Input Bias Current | 1pA (typ @ 25°C) - enables use with >10GΩ source impedances (e.g., pH probes, piezoelectric sensors) without significant error. |
| Offset Voltage | ±750µV (max) - ensures DC accuracy in precision instrumentation without external trimming. |
| Slew Rate | 7.2V/µs - allows full-scale step response in <1µs for 2V output swings, critical for transient capture in shock/vibration sensing. |
| Supply Voltage Range | 2.7V to 5.5V - compatible with single-cell Li-ion (3.0–3.7V) and 3.3V/5V system rails without level-shifting. |
| PSRR / CMRR | 93dB / 70dB (min) - rejects power supply noise and common-mode interference in noisy industrial environments. |
| Shutdown Current | 2.3µA per amp - reduces total system quiescent current by >99% during idle periods in battery-powered devices. |
Pinout & Package
Package: 8-lead MSOP (MS8), 3mm × 3mm body, exposed pad connected to V–, RoHS-compliant, tape-and-reel (TRPBF).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | +IN A | Noninverting input of Amplifier A - high-impedance node requiring guard ring layout for pA-level bias current integrity. |
| 2 | –IN A | Inverting input of Amplifier A - accepts feedback networks; sensitive to stray capacitance due to 1pA bias current. |
| 3 | OUT A | Amplifier A output - rail-to-rail swing (within 30mV of V+/V–) enables maximum dynamic range in low-voltage systems. |
| 4 | V– | Negative supply rail - also connected to exposed thermal pad; must be soldered to PCB ground plane for thermal and electrical stability. |
| 5 | V+ | Positive supply rail - decoupling capacitor (0.1µF) required close to pin for high-frequency PSRR maintenance. |
| 6 | +IN B | Noninverting input of Amplifier B - electrically isolated from Amp A; channel separation >120dB at 10kHz prevents crosstalk. |
| 7 | –IN B | Inverting input of Amplifier B - identical bias and noise characteristics as Pin 2; supports independent dual-sensor interfaces. |
| 8 | OUT B | Amplifier B output - independently driven; no internal shutdown control in MS8 package (SHDN pins only on DD variant). |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Supports full-supply-range signal acquisition and drive - eliminates level-shifting ICs in 3.3V data loggers and portable test gear. |
| 1pA input bias current (25°C) | Enables direct interfacing with ultra-high-impedance transducers (e.g., Murata PKGS-00MX1 shock sensors) without guard-ring degradation. |
| 14MHz GBW with unity-gain stability | Permits wideband filtering (e.g., 16Hz–10kHz vibration bandpass) without external compensation components. |
| 2.7V to 5.5V single-supply operation | Eliminates dual-rail generation in battery-powered medical monitors and handheld diagnostics equipment. |
| 70dB min CMRR over 0–5V VCM | Maintains accuracy in presence of ground shifts or EMI-coupled common-mode noise in industrial sensor nodes. |
Applications
| Shock/Vibration Sensor Signal Conditioning | Portable pH Meter Front-End |
|---|---|
|
Use Scenario: Amplifying low-level charge output (0.57pC/g) from Murata PKGS-00MX1 piezoelectric shock sensor across 16Hz–10kHz bandwidth. IC Role / Device Role / Timing Role: Dual op-amp configured as transimpedance amplifier (TIA) and buffer; first stage sets gain (570mV/g), second stage isolates ADC input. Use Value: 1pA input bias preserves sensor's high source impedance; rail-to-rail output maximizes 3.3V ADC utilization; 14MHz GBW ensures flat frequency response. |
Use Scenario: Conditioning mV-level output from glass electrode pH probe in handheld field meter with 2.7–5.5V battery supply. IC Role / Device Role / Timing Role: High-impedance unity-gain buffer isolating probe from measurement circuitry; second amp used for reference voltage scaling. Use Value: 1pA bias current prevents electrode polarization error; 0.75mV offset avoids calibration drift; shutdown mode extends battery life between measurements. |
| Low-Power Data Acquisition Channel | Medical ECG Lead Amplifier Stage |
|
Use Scenario: 16-bit SAR ADC front-end in battery-operated environmental monitor acquiring thermistor, RTD, and strain gauge signals. IC Role / Device Role / Timing Role: Programmable-gain amplifier (PGA) core using LTC6087CMS8#TRPBF in dual configuration - one amp for gain, one for offset correction. Use Value: 12nV/√Hz input noise ensures <1µV RMS noise floor; 2.3µA shutdown current enables microamp-level sleep modes; MS8 footprint saves board area. |
Use Scenario: First-stage instrumentation amplifier input buffer in wearable ECG patch operating from coin-cell battery. IC Role / Device Role / Timing Role: Dual rail-to-rail buffer isolating high-impedance electrodes (skin contact) from differential amplifier; rejects motion artifact via common-mode rejection. Use Value: 70dB CMRR suppresses 50/60Hz mains interference; 1pA bias minimizes electrode polarization; 3.3V operation matches BLE SoC supply. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC6078CMS8#TRPBF | Lower supply current (60µA vs 1.05mA), lower GBW (1.5MHz), higher VOS drift (0.7µV/°C vs 5µV/°C), same 1pA IBIAS. | Better for always-on ultra-low-power monitoring; insufficient for >10kHz vibration sensing due to bandwidth limit. | Select LTC6078CMS8#TRPBF when sub-100µA quiescent current is mandatory and bandwidth ≤1.5MHz suffices. |
| LTC6241IMS8#TRPBF | Higher GBW (18MHz), lower noise (7nV/√Hz), lower IBIAS (0.2pA), but requires ≥2.7V supply and has no shutdown mode. | Superior for low-noise audio or high-resolution ADC drivers; lacks power gating for intermittent-sampling systems. | Select LTC6241IMS8#TRPBF when noise performance dominates and continuous operation is acceptable. |
Compared with LTC6078CMS8#TRPBF and LTC6241IMS8#TRPBF, the LTC6087CMS8#TRPBF uniquely balances 14MHz bandwidth, 1pA bias, and 2.3µA shutdown - making it optimal for battery-powered sensor nodes requiring both speed and ultra-low standby power.
Availability
LTC6087CMS8#TRPBF is available at Aetrix Electronics and suitable for portable medical devices, industrial vibration monitors, and handheld test equipment requiring stable component supply across extended temperature ranges (–40°C to 85°C).
Supply support for LTC6087CMS8#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) designs high-performance analog, mixed-signal, and digital signal processing ICs for precision measurement and signal conditioning.
The LTC6087 series targets low-power, high-accuracy sensor interface applications - specifically engineered for transducer amplification where input bias current, offset, and rail-to-rail operation critically impact measurement fidelity.
FAQ
What is the maximum operating temperature range for the LTC6087CMS8#TRPBF?
The LTC6087CMS8#TRPBF is rated for operation from –40°C to +85°C (C-grade). This is confirmed in the Order Information table, where "CMS8" suffix denotes the commercial temperature grade. The H-grade variant (HMS8) extends to 125°C, but LTC6087CMS8#TRPBF itself is specified only to 85°C.
Does the LTC6087CMS8#TRPBF include shutdown functionality?
No, the LTC6087CMS8#TRPBF does not include shutdown pins. Shutdown capability (SHDNA/SHDNB) is exclusive to the 10-lead DFN (DD) package variants (e.g., LTC6087CDD#TRPBF). The MS8 package has no dedicated shutdown terminals - all eight pins are signal or supply connections.
What is the typical input bias current of the LTC6087CMS8#TRPBF at 85°C?
The typical input bias current of the LTC6087CMS8#TRPBF at 85°C is 15pA, as explicitly stated in the FEATURES section of the datasheet. This value is measured under standard test conditions (VS = 5V, VCM = 2.5V) and reflects the temperature-dependent leakage of internal ESD diodes.
Can the LTC6087CMS8#TRPBF drive a 100pF capacitive load in unity-gain configuration?
Yes, the LTC6087CMS8#TRPBF can reliably drive up to 100pF in unity-gain configuration, as confirmed in the APPLICATIONS INFORMATION section. Overshoot remains controlled (<50%) at this load; adding a small series resistor (e.g., 10Ω) further improves stability for larger capacitive loads.
Is the exposed pad on the LTC6087CMS8#TRPBF internally connected, and how should it be handled on the PCB?
Yes, the exposed pad on the LTC6087CMS8#TRPBF is internally connected to V– (pin 4). Per the MS8 package drawing and PIN FUNCTIONS section, it must be soldered to the PCB's V–/ground plane to ensure thermal dissipation, electrical stability, and optimal PSRR performance - floating or unconnected pads degrade noise and bias current behavior.
LTC6087CMS8#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:
- CMOS
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 7.2V/µs
- Gain Bandwidth Product:
- 14 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 330 µV
- Current - Supply:
- 1.05mA (x2 Channels)
- Current - Output / Channel:
- 45 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
LTC6087CMS8#TRPBF FAQ
1.How can I place an order for LTC6087CMS8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6087CMS8#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 LTC6087CMS8#TRPBF reliable?
The price and inventory of LTC6087CMS8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6087CMS8#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC6087CMS8#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6087CMS8#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6087CMS8#TRPBF?
LTC6087CMS8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6087CMS8#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 LTC6087CMS8#TRPBF?
For technical support, including LTC6087CMS8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6087CMS8#TRPBF requirements.
6.How does Aetrix verify that LTC6087CMS8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC6087CMS8#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 LTC6087CMS8#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC6087CMS8#TRPBF?
All LTC6087CMS8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6087CMS8#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 LTC6087CMS8#TRPBF part is unused and in its original packaging.
Return procedure for LTC6087CMS8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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