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Analog Devices Inc. LTC6800HMS8#PBF
- Part No.:
- LTC6800HMS8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC6800HMS8#PBF.pdf
- Description:
- IC INST AMP 1 CIRCUIT 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,033
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Product details
Overview
LTC6800HMS8#PBF from Analog Devices (acquired Linear Technology) is a precision rail-to-rail input/output instrumentation amplifier using charge-balanced sampled-data architecture with zero-drift op amp backend. It delivers 116dB CMRR independent of gain, ≤100µV input offset voltage, and ±250nV/°C max drift over –40°C to 125°C - enabling high-accuracy thermocouple and strain gauge signal conditioning in industrial sensor interfaces.
For engineers reviewing the LTC6800HMS8#PBF datasheet, LTC6800HMS8#PBF pinout, LTC6800HMS8#PBF application, or LTC6800HMS8#PBF equivalent, key selection criteria include guaranteed offset performance across temperature, rail-to-rail operation on 2.7V–5.5V supplies, MSOP-8 package compatibility, and external gain-setting resistor flexibility for precision DC-coupled measurement systems.
Technical Context
The LTC6800HMS8#PBF employs a switched-capacitor front end that samples differential input voltage onto internal capacitor CS, then transfers charge to hold capacitor CH referenced to the REF pin - translating common-mode level while preserving differential signal integrity. This architecture enables rail-to-rail input operation without compromising CMRR.
Its internal zero-drift operational amplifier provides low-drift amplification with programmable gain via external resistors on RG and REF pins. The device operates at a fixed 3kHz internal sampling frequency, with settling time dominated by the switched-capacitor stage below gain=100 and by the 200kHz GBW op amp at higher gains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CMRR | 116dB typical, independent of gain - ensures stable rejection of common-mode noise in noisy industrial environments without gain-dependent calibration. |
| Input Offset Voltage | ±100µV max - enables sub-100µV system-level offset error in precision bridge or thermocouple circuits without trimming. |
| Offset Drift | ±250nV/°C max - supports accurate DC measurements across automotive and industrial temperature ranges without active compensation. |
| Supply Range | 2.7V to 5.5V - compatible with single-supply 3.3V and 5V systems, including battery-powered portable instrumentation. |
| Input/Output Swing | Rail-to-rail - maximizes dynamic range and simplifies interface to ADCs with full-scale reference voltages. |
| Sampling Frequency | 3kHz - sufficient for low-frequency sensor signals (e.g., load cells, RTDs) while minimizing aliasing risk with simple anti-alias filtering. |
| Gain Bandwidth | 200kHz - supports stable closed-loop response up to ~10kHz at G=10, suitable for step-response-critical applications like electronic scales. |
Pinout & Package
Package: 8-lead plastic MSOP (MS8), 3mm × 3mm footprint, 0.65mm pitch, exposed pad internally connected to V–.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| NC (Pin 1) | No-connect terminal | Must remain unconnected; no internal connection - avoids unintended parasitic coupling or ESD path disruption. |
| –IN (Pin 2) | Inverting input | Differential input node; matched impedance critical for CMRR - requires symmetrical PCB routing and source resistance ≤10kΩ. |
| +IN (Pin 3) | Noninverting input | Differential input node; same layout constraints as –IN to preserve common-mode rejection and minimize offset error. |
| V– (Pin 4) | Negative supply rail | Reference for output swing and internal circuitry; exposed pad must be soldered to ground plane for thermal and noise performance. |
| REF (Pin 5) | Output reference voltage | Sets output common-mode level; drives external gain-setting network and defines zero-output point for bipolar signal handling. |
| RG (Pin 6) | Inverting input of internal op amp | Connects to feedback resistor; gain = 1 + R2/R1 where R1 between REF and RG, R2 between RG and OUT - enables precise DC gain control. |
| OUT (Pin 7) | Amplified output | Single-ended rail-to-rail output; capable of driving 2kΩ loads to within 20mV of rails - interfaces directly to SAR or delta-sigma ADC inputs. |
| V+ (Pin 8) | Positive supply rail | Must be bypassed with 0.1µF ceramic capacitor to V–; placement within 2mm of pins essential to suppress clock-induced supply noise. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full utilization of supply voltage range in single-supply systems - eliminates need for level-shifting or dual supplies in portable medical devices. |
| 116dB CMRR independent of gain | Ensures consistent noise immunity across all gain settings - critical for factory automation sensors where gain may be adjusted post-deployment. |
| ≤100µV input offset voltage | Reduces system calibration burden in high-resolution data acquisition - supports 16-bit+ effective resolution without hardware trimming. |
| –40°C to 125°C operating range | Validated for under-hood automotive and industrial control cabinet use - eliminates derating concerns in harsh thermal environments. |
| Charge-balanced sampled-data architecture | Eliminates chopper-related switching artifacts - preserves signal fidelity in DC-coupled applications like strain gauge monitoring. |
Applications
| Thermocouple Amplifiers | Electronic Scales |
|---|---|
Use Scenario: Amplifying µV-level thermocouple outputs (e.g., Type K) in furnace temperature controllers with cold-junction compensation. IC Role / Device Role / Timing Role: Precision instrumentation amplifier providing high CMRR, low drift, and rail-to-rail output to drive 24-bit sigma-delta ADCs. Use Value: Enables <1°C measurement accuracy over –40°C to 125°C ambient without recalibration - meeting IEC 61511 functional safety requirements for process instrumentation. |
Use Scenario: Conditioning mV-range Wheatstone bridge outputs from load cells in commercial weighing platforms. IC Role / Device Role / Timing Role: Low-drift, high-gain signal conditioner interfacing bridge sensors to microcontroller ADCs with minimal external components. Use Value: Delivers <0.01% full-scale linearity and <10ppm/°C system drift - satisfying OIML R76 Class III accuracy certification for retail scales. |
| Medical Instrumentation | Strain Gauge Amplifiers |
Use Scenario: Front-end amplification of biopotential signals (e.g., ECG leads) in portable patient monitors with battery power constraints. IC Role / Device Role / Timing Role: Single-supply instrumentation amplifier delivering rail-to-rail output into low-power ADCs while rejecting 50/60Hz interference. Use Value: Achieves >100dB power-line rejection at 1kHz bandwidth - supporting EN ISO 60601-2-27 ECG diagnostic accuracy requirements. |
Use Scenario: Signal conditioning for bonded foil strain gauges in structural health monitoring systems deployed on bridges or wind turbine blades. IC Role / Device Role / Timing Role: High-stability amplifier with low thermal EMF inputs, optimized for long-term drift-critical static load measurement. Use Value: Maintains <5µV/°C thermal drift contribution - enabling <0.1%FS stability over 10-year deployments without field recalibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar instrumentation amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC2053IMS8#PBF | Lower offset (10µV max), but only 110dB CMRR and 100kHz GBW - less robust against high-frequency common-mode noise. | Better for ultra-low-offset DC applications (e.g., precision current sensing), but less suitable for noisy industrial environments requiring >115dB CMRR. | Choose LTC2053 when offset dominates error budget and CMRR >113dB is not required; LTC6800HMS8#PBF preferred for mixed-signal industrial systems. |
| LT1167CS8#PBF | Higher GBW (1.2MHz), but 100µV offset drift (1µV/°C) and no rail-to-rail output - limited dynamic range on 3.3V supplies. | More appropriate for higher-bandwidth applications (e.g., vibration analysis), but requires level-shifting for ADC interface and suffers greater thermal drift. | Select LT1167 for AC-coupled, wideband sensor interfaces; LTC6800HMS8#PBF remains optimal for DC-accurate, rail-to-rail, low-drift measurement chains. |
Compared with LTC2053IMS8#PBF and LT1167CS8#PBF, the LTC6800HMS8#PBF uniquely balances 116dB CMRR, rail-to-rail operation, and ±250nV/°C drift in an MSOP-8 package - making it the only option among the three qualified for high-accuracy, wide-temperature, single-supply industrial DAQ without external support circuitry.
Availability
LTC6800HMS8#PBF is available at Aetrix Electronics and suitable for thermocouple amplifiers, electronic scales, medical instrumentation, and strain gauge amplifiers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC6800HMS8#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 its precision analog product lines with rigorous automotive and industrial qualification standards.
The LTC6800HMS8#PBF belongs to Linear Technology's precision instrumentation amplifier family, designed specifically for high-accuracy DC-coupled sensor signal conditioning in harsh environments where offset, drift, and CMRR stability are critical.
FAQ
What is the maximum operating temperature range for the LTC6800HMS8#PBF?
The LTC6800HMS8#PBF is specified for continuous operation from –40°C to 125°C, with all critical parameters (including CMRR, offset voltage, and PSRR) guaranteed over this full range per design characterization. This makes the LTC6800HMS8#PBF suitable for under-hood automotive and industrial control applications where ambient temperatures exceed 105°C.
Does the LTC6800HMS8#PBF require external capacitors for stable operation?
Yes - the LTC6800HMS8#PBF requires a 0.1µF ceramic capacitor placed directly between V+ (Pin 8) and V– (Pin 4) with minimal lead length (<2mm). This bypass capacitor is mandatory to suppress clock-induced supply noise from the internal 3kHz sampling circuitry; omission causes significant CMRR degradation and output ripple.
Can the LTC6800HMS8#PBF operate from a 3.3V supply?
Yes - the LTC6800HMS8#PBF supports supply voltages from 2.7V to 5.5V, making it fully compatible with standard 3.3V logic and ADC systems. At 3.3V, the output swings rail-to-rail (0V to 3.3V) and maintains 113dB minimum CMRR, enabling direct interface to 3.3V SAR ADCs without level-shifting circuitry.
How is gain configured on the LTC6800HMS8#PBF?
Gain is set externally using two resistors: one (R1) between REF (Pin 5) and RG (Pin 6), and another (R2) between RG (Pin 6) and OUT (Pin 7). The gain equation is G = 1 + R2/R1. Unlike fixed-gain amplifiers, this configuration allows precise DC gain tuning (e.g., G = 100.5) without trimming potentiometers or multiple discrete parts.
Is the LTC6800HMS8#PBF pin-compatible with other Linear Technology instrumentation amplifiers?
No - the LTC6800HMS8#PBF uses a unique pinout optimized for its sampled-data architecture (e.g., dedicated REF and RG pins). It is not pin-compatible with LT1167, LTC2053, or LTC1100. Direct replacement requires PCB layout revision to accommodate the distinct signal routing and bypassing requirements of the LTC6800HMS8#PBF.
LTC6800HMS8#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:
- Instrumentation
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.2V/µs
- Gain Bandwidth Product:
- 200 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 4 nA
- Voltage - Input Offset:
- 100 µV
- Current - Supply:
- 1.3mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
LTC6800HMS8#PBF FAQ
1.How can I place an order for LTC6800HMS8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6800HMS8#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 LTC6800HMS8#PBF reliable?
The price and inventory of LTC6800HMS8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6800HMS8#PBF is usually 5 days.
3.What payment methods are accepted for LTC6800HMS8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6800HMS8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6800HMS8#PBF?
LTC6800HMS8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6800HMS8#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 LTC6800HMS8#PBF?
For technical support, including LTC6800HMS8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6800HMS8#PBF requirements.
6.How does Aetrix verify that LTC6800HMS8#PBF is sourced from the original manufacturer or authorized distributors?
All LTC6800HMS8#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 LTC6800HMS8#PBF meets industry standards.
7.What is the process for return or replacement of LTC6800HMS8#PBF?
All LTC6800HMS8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6800HMS8#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 LTC6800HMS8#PBF part is unused and in its original packaging.
Return procedure for LTC6800HMS8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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