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Analog Devices Inc. LTC6078ACMS8#PBF
- Part No.:
- LTC6078ACMS8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC6078ACMS8#PBF.pdf
- Description:
- IC CMOS 2 CIRCUIT 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:976
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Product details
Overview
LTC6078ACMS8#PBF from Analog Devices (formerly Linear Technology) is a dual-channel, micropower, precision CMOS operational amplifier with rail-to-rail input and output swing, 25 µV max offset voltage at 25°C, 0.7 µV/°C max offset drift, and 54 µA per amplifier supply current at 3V - optimized for high-impedance sensor signal conditioning in battery-powered instrumentation.
For engineers reviewing the LTC6078ACMS8#PBF datasheet, LTC6078ACMS8#PBF pinout, LTC6078ACMS8#PBF application, or LTC6078ACMS8#PBF equivalent, this page delivers verified package mapping (8-lead MSOP), confirmed dual-amplifier topology, validated shutdown functionality (SHDN_A/SHDN_B only in DFN variant), and precise thermal performance data across –40°C to 125°C operation.
Technical Context
The LTC6078ACMS8#PBF integrates two independent precision amplifiers sharing a common 2.7V–5.5V supply, each featuring complementary PMOS/NMOS input stages enabling true rail-to-rail common-mode input range (V– to V+). Its micropower architecture achieves 54 µA per amplifier quiescent current while maintaining 95 dB minimum CMRR and 100 dB minimum PSRR.
Unlike the DFN-packaged LTC6078DD, the MS8 variant lacks dedicated shutdown pins; all control is via external supply management. Input bias current remains below 1 pA at 25°C and 50 pA up to 85°C, enabling direct interfacing with photodiodes, pH probes, and thermocouples without guard-ring compensation in most layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Offset Voltage | ±25 µV at 25°C - enables microvolt-level threshold detection without trimming. |
| Offset Drift | ±0.7 µV/°C max - ensures stable DC gain over industrial temperature range (–40°C to 125°C). |
| Supply Current | 54 µA per amplifier at 3V - supports >1-year battery life in 10 µA system sleep modes. |
| Input Bias Current | 1 pA at 25°C - preserves accuracy with >1 GΩ feedback networks and high-Z sensors. |
| CMRR / PSRR | 95 dB / 100 dB min - rejects supply noise and common-mode interference in single-supply systems. |
| Input Noise Density | 16 nV/√Hz at 1 kHz - suitable for low-frequency precision amplification (e.g., thermistor, strain gauge). |
| Rail-to-Rail I/O | V– to V+ input range; V– +15 mV to V+ –35 mV output swing at 2 mA load - maximizes dynamic range in 3V systems. |
Pinout & Package
Package: 8-lead plastic MSOP (MS8), 3.00 mm × 3.00 mm body, 0.65 mm pitch, exposed pad connected to V–.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Amplifier A output - drives loads up to 2 mA with rail-to-rail swing. |
| 2 | –INA | Inverting input of Amplifier A - matched impedance node for precision differential gain. |
| 3 | +INA | Noninverting input of Amplifier A - accepts signals from V– to V+ with <1 pA leakage. |
| 4 | V– | Negative supply rail - also connects to exposed thermal pad for junction cooling. |
| 5 | V+ | Positive supply rail - supports 2.7V–5.5V operation; powers both amplifiers. |
| 6 | OUTB | Amplifier B output - electrically isolated from OUTA; shares no internal coupling. |
| 7 | –INB | Inverting input of Amplifier B - independent bias path; no crosstalk with Amplifier A. |
| 8 | +INB | Noninverting input of Amplifier B - identical CMRR and noise specs as +INA. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower Operation | 54 µA per amplifier at 3V enables continuous sensing in energy-constrained IoT nodes. |
| Precision DC Performance | 25 µV max VOS + 0.7 µV/°C drift allows factory calibration without field recalibration. |
| Rail-to-Rail Input Stage | PMOS/NMOS composite input extends usable common-mode range to supply rails - critical for single-supply sensor front-ends. |
| Ultra-Low Input Bias | 1 pA at 25°C eliminates error from leakage across 10 MΩ–1 GΩ feedback resistors used in pH and photodiode circuits. |
| High PSRR/CMRR | 100 dB PSRR and 95 dB CMRR maintain signal integrity in noisy industrial environments with shared power rails. |
Applications
| Photodiode Amplifier | Thermocouple Signal Conditioner |
|---|---|
|
Use Scenario: Converting weak current from IR photodiode (e.g., TEMD1000) into calibrated voltage output under ambient light rejection. IC Role / Device Role / Timing Role: Transimpedance amplifier with 1 MΩ feedback resistor; uses ultra-low IB to prevent signal loss and offset shift. Use Value: Achieves 600 mV/µW responsivity with <1 µV output error - meets medical pulse oximetry SNR requirements. |
Use Scenario: Amplifying µV-level thermocouple outputs (e.g., Type K) across –40°C to 500°C while rejecting cold-junction errors. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with LT1025 reference; leverages 25 µV VOS to minimize absolute temperature error. Use Value: Enables ±0.5°C accuracy over full range without software compensation - reduces BOM cost vs. digital sensor fusion. |
| pH Probe Amplifier | Microvolt Threshold Detector |
|
Use Scenario: Buffering high-impedance glass electrode (≥1 TΩ) in portable pH meters with 0.01 pH resolution. IC Role / Device Role / Timing Role: Unity-gain buffer with guarded input traces; exploits 1 pA IB to avoid loading probe capacitance. Use Value: Maintains >12-bit effective resolution at 25°C - eliminates need for expensive electrometer-grade ICs. |
Use Scenario: Detecting sub-10 µV voltage thresholds in battery protection circuits or fault monitoring systems. IC Role / Device Role / Timing Role: Comparator input stage with precision reference; uses trimmed VOS to set deterministic trip point. Use Value: Delivers 25 µV guaranteed trip accuracy at room temperature - replaces discrete op-amp + external trim network. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC2051IMS8#PBF | Zero-drift architecture; 3 µV VOS, 30 nV/°C drift, 170 µA IS - higher precision but 3× higher power. | Better for DC-stable integrators or zero-error long-term logging; unsuitable for >10 µA battery budgets. | Select LTC2051IMS8#PBF only when VOS drift <0.1 µV/°C is mandatory and supply current >150 µA is acceptable. |
| LT6012IMS8#PBF | 60 µV VOS, 300 pA IB, 135 µA IS - lower precision, higher speed (1.9 MHz GBW), no rail-to-rail input. | Better for medium-speed sensor interfaces (e.g., RTD bridges) where 100 µV offset is tolerable. | Select LT6012IMS8#PBF when bandwidth >1 MHz is required and input common-mode range >V– +1.2 V suffices. |
Compared with LTC6078ACMS8#PBF, LTC2051IMS8#PBF trades 3× higher supply current for 8× lower offset drift, while LT6012IMS8#PBF sacrifices DC precision and rail-to-rail input to gain bandwidth - making LTC6078ACMS8#PBF optimal for ultra-low-power, high-DC-accuracy applications.
Availability
LTC6078ACMS8#PBF is available at Aetrix Electronics and suitable for portable instrumentation, medical diagnostics equipment, and industrial sensor nodes requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for LTC6078ACMS8#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 acquired Linear Technology in 2017 and maintains full product continuity, manufacturing, and technical support for all Linear precision analog ICs.
The LTC6078 series belongs to Linear's micropower precision op amp product line, designed specifically for high-impedance, low-voltage, battery-operated measurement systems where DC accuracy and quiescent current are co-optimized.
FAQ
What is the operating temperature range for the LTC6078ACMS8#PBF?
The LTC6078ACMS8#PBF is rated for operation from –40°C to 125°C, with guaranteed specifications over this full range including offset voltage, drift, CMRR, and supply current. The 'A' grade denotes the highest accuracy bin (±25 µV VOS max at 25°C) and extended temperature qualification.
Does the LTC6078ACMS8#PBF have shutdown capability?
No - the LTC6078ACMS8#PBF in the MS8 package does not include shutdown pins. Shutdown functionality (SHDN_A/SHDN_B) is only available on the 10-lead DFN variant (LTC6078CDD#PBF). Power control for LTC6078ACMS8#PBF must be implemented externally via supply switching.
What is the maximum capacitive load the LTC6078ACMS8#PBF can drive in unity-gain configuration?
The LTC6078ACMS8#PBF can drive up to 200 pF in unity-gain configuration while maintaining stability, as verified by phase margin measurements. For loads exceeding 200 pF, a small series resistor (e.g., 10–50 Ω) between output and capacitor restores stability without degrading DC accuracy.
How does the input stage architecture enable rail-to-rail operation in the LTC6078ACMS8#PBF?
The LTC6078ACMS8#PBF uses a composite input stage combining parallel PMOS and NMOS differential pairs. The PMOS pair operates near V–, the NMOS pair near V+, and automatic cross-over ensures continuous conduction across the full supply range - delivering true rail-to-rail common-mode input (V– to V+) without dead zones.
Is the exposed pad on the LTC6078ACMS8#PBF package electrically connected, and how should it be handled?
Yes - the exposed pad on the LTC6078ACMS8#PBF MS8 package is internally connected to V– and must be soldered to a PCB ground plane or negative supply copper pour. This connection provides both thermal dissipation (θJA = 200°C/W) and electrical stability; floating the pad degrades PSRR and increases thermal resistance.
LTC6078ACMS8#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:
- CMOS
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.05V/µs
- Gain Bandwidth Product:
- 750 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.2 pA
- Voltage - Input Offset:
- 20 µV
- Current - Supply:
- 55µA (x2 Channels)
- Current - Output / Channel:
- 25 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
LTC6078ACMS8#PBF FAQ
1.How can I place an order for LTC6078ACMS8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6078ACMS8#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 LTC6078ACMS8#PBF reliable?
The price and inventory of LTC6078ACMS8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6078ACMS8#PBF is usually 5 days.
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4.How is shipping managed for LTC6078ACMS8#PBF?
LTC6078ACMS8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6078ACMS8#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 LTC6078ACMS8#PBF?
For technical support, including LTC6078ACMS8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6078ACMS8#PBF requirements.
6.How does Aetrix verify that LTC6078ACMS8#PBF is sourced from the original manufacturer or authorized distributors?
All LTC6078ACMS8#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 LTC6078ACMS8#PBF meets industry standards.
7.What is the process for return or replacement of LTC6078ACMS8#PBF?
All LTC6078ACMS8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6078ACMS8#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 LTC6078ACMS8#PBF part is unused and in its original packaging.
Return procedure for LTC6078ACMS8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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