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Analog Devices Inc. LTC6247CMS8#PBF
- Part No.:
- LTC6247CMS8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC6247CMS8#PBF.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,543
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Product details
Overview
LTC6247CMS8#PBF from Analog Devices is a dual, rail-to-rail input/output operational amplifier in an 8-lead MSOP package, delivering 180MHz gain-bandwidth, 90V/µs slew rate, and 4.2nV/√Hz input voltage noise at 1mA supply current per amplifier. It operates from 2.5V to 5.25V supplies and features shutdown capability (42µA disable current), making it suitable for high-speed, low-voltage signal conditioning in portable instrumentation and precision ADC driver circuits.
For engineers reviewing the LTC6247CMS8#PBF datasheet, LTC6247CMS8#PBF pinout, LTC6247CMS8#PBF application, or LTC6247CMS8#PBF equivalent, key selection criteria include its dual-channel configuration, MSOP-8 footprint, guaranteed 0°C to 70°C operation, rail-to-rail I/O swing, and verified performance in driving SAR ADCs with >70dB SNR at 2.2Msps.
Technical Context
The LTC6247CMS8#PBF employs a dual-input-stage architecture-PNP-based for VCM = V– to V+ – 1.2V and NPN-based near V+-enabling true rail-to-rail common-mode input range. Its output stage uses complementary common-emitter transistors to achieve rail-to-rail swing with ±50mA drive capability.
It integrates active bias current cancellation for the PNP input pair, reducing input bias current to ±100nA typical at mid-supply, and features fast power-down (2µs turn-off, 5µs turn-on) via the SHDN pin referenced to V–. The device maintains 110dB CMRR and 73dB PSRR across 2.5V–5.25V supply range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 180MHz - enables stable unity-gain operation up to 120MHz closed-loop bandwidth for high-fidelity signal paths. |
| Slew Rate | 90V/µs - supports clean 2V step response in ≤74ns (0.1%) for fast transient handling in data acquisition. |
| Input Voltage Noise | 4.2nV/√Hz @ 100kHz - ensures minimal added noise when amplifying µV-level sensor signals. |
| Supply Current per Amp | 1mA max @ 25°C - allows dual-channel high-speed operation within tight 2mA total budget for battery-powered systems. |
| Input Common Mode Range | 0V to VS - accepts signals from ground to supply rail without clipping, critical for single-supply sensor interfaces. |
| Output Swing | Rail-to-rail - delivers full dynamic range into 1kΩ load (≤150mV from rails), maximizing ADC utilization. |
| Shutdown Current | 42µA per amplifier - reduces system standby power by >95% while retaining fast wake-up (<5µs). |
Pinout & Package
Package: 8-Lead Plastic MSOP (LTDWH), 3mm × 3mm × 1.1mm body, exposed pad connected to V–.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output; capable of sourcing/sinking ≥50mA, rail-to-rail swing. |
| 2 | –IN A | Inverting input of Amp A; valid from V– to V+; matched to +IN A for precision differential gain. |
| 3 | +IN A | Non-inverting input of Amp A; same rail-to-rail common-mode range as –IN A. |
| 4 | V– | Negative supply pin; also connects to exposed thermal pad; must be soldered to PCB ground plane. |
| 5 | V+ | Positive supply pin; supports 2.5V–5.25V total supply range relative to V–. |
| 6 | OUT B | Amplifier B output; electrically identical to OUT A; enables dual-channel signal processing in one footprint. |
| 7 | –IN B | Inverting input of Amp B; channel-to-channel offset match ≤±600µV ensures balanced differential performance. |
| 8 | +IN B | Non-inverting input of Amp B; independent of Amp A; supports separate signal paths or feedback networks. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full-scale signal handling in single-supply 3.3V systems without level-shifting circuitry. |
| 180MHz GBW at 1mA | Delivers high closed-loop bandwidth even under ultra-low power constraints-uniquely efficient among RRO op amps. |
| Active input bias cancellation | Maintains ±100nA input bias current across VCM, minimizing offset drift in high-impedance sensor interfaces. |
| Fast shutdown with 2µs turn-off | Allows dynamic power gating in time-sliced architectures (e.g., multiplexed sensor arrays) without signal disruption. |
| Specified over 0°C to 70°C | Guarantees parametric performance for commercial-grade industrial control and test equipment applications. |
Applications
| ADC Driver | Rail-to-Rail Buffer |
|---|---|
|
Use Scenario: Driving the analog input of a 16-bit SAR ADC (e.g., LTC2366) at 2.2Msps sampling rate with 3.3V supply. IC Role / Device Role / Timing Role: Precision gain-of-2 buffer with 70dB SNR and 82dB SFDR measured at 350kHz input. Use Value: Eliminates external level-shifting components while preserving ENOB through low 4.2nV/√Hz noise and 90V/µs slew rate. |
Use Scenario: Isolating a microcontroller DAC output from variable capacitive loads in programmable power supply feedback loops. IC Role / Device Role / Timing Role: Unity-gain voltage follower with <100mV output swing error at 25mA load and 120MHz bandwidth. Use Value: Maintains stability with >1000pF capacitive loads using only 10Ω series output resistance-no external compensation required. |
| Low-Voltage Video Amplifier | Battery-Powered Instrumentation |
|
Use Scenario: Amplifying composite NTSC video signals in portable medical imaging displays powered from 3.3V Li-ion batteries. IC Role / Device Role / Timing Role: DC-coupled gain-of-2 video driver with 0.2% differential gain and 0.08° differential phase error. Use Value: Preserves color fidelity without AC coupling capacitors, reducing BOM count and board space in space-constrained enclosures. |
Use Scenario: Conditioning thermocouple or strain gauge outputs in handheld multimeters with 2.7V–3.6V battery input. IC Role / Device Role / Timing Role: Low-noise, low-power instrumentation amplifier front-end with 110dB CMRR and 2.5V/µs large-signal gain. Use Value: Achieves 16-bit effective resolution at <2mA total supply current, extending battery life beyond 20 hours per charge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual rail-to-rail op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADA4807-2ARMZ | Lower noise (3.9nV/√Hz), higher supply current (1.7mA), no shutdown pin, MSOP-8 package. | Preferred where ultimate SNR dominates power budget; unsuitable for power-gated systems requiring <100µA standby. | Select ADA4807-2ARMZ for highest dynamic range in fixed-power instrumentation; avoid if shutdown functionality is mandatory. |
| OPA2350UA | Lower GBW (38MHz), higher input bias current (±1.5pA FET input), no shutdown, SOIC-8 package. | Better for ultra-high-impedance pH or photodiode sensors; insufficient bandwidth for >10MHz ADC drivers. | Select OPA2350UA for femtoampere-level sensor interfacing; reject for high-speed signal chains requiring >100MHz bandwidth. |
Compared with LTC6247CMS8#PBF, ADA4807-2ARMZ trades 42µA shutdown capability for marginally lower noise but consumes 70% more quiescent current, while OPA2350UA sacrifices 4.7× bandwidth and lacks power control-making LTC6247CMS8#PBF the sole choice for dual-channel, low-power, high-speed, shutdown-capable designs in MSOP-8.
Availability
LTC6247CMS8#PBF is available at Aetrix Electronics and suitable for high-speed data acquisition, portable medical devices, and industrial sensor signal conditioning requiring stable component supply and commercial temperature grade assurance.
Supply support for LTC6247CMS8#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 LTC6247CMS8#PBF belongs to ADI's LTC® precision op amp product line, engineered for applications demanding simultaneous high speed, low power, rail-to-rail operation, and robust parametric guarantees across voltage and temperature.
FAQ
What is the operating temperature range specified for the LTC6247CMS8#PBF?
The LTC6247CMS8#PBF is specified for 0°C to 70°C ambient operation, with full electrical performance guaranteed across this range. It is not rated for extended industrial (–40°C to 85°C) or automotive (–40°C to 125°C) temperatures-those require the IMS8 or HMS8 variants. The datasheet confirms this in the ORDER INFORMATION table under "SPECIFIED TEMPERATURE RANGE" for part number LTC6247CMS8#PBF.
Does the LTC6247CMS8#PBF support true rail-to-rail input and output operation?
Yes, the LTC6247CMS8#PBF supports true rail-to-rail input common-mode range (0V to VS) and rail-to-rail output swing (within 150mV of either rail at 5mA load). This is achieved via dual-input-stage architecture (PNP + NPN) and complementary emitter-follower output stage, enabling full dynamic range utilization in single-supply 3.3V systems without external level-shifting circuitry.
How does the shutdown function work on the LTC6247CMS8#PBF?
The LTC6247CMS8#PBF has no dedicated SHDN pin in the MS8 package-the shutdown feature is only available on the 10-lead MSOP (MS) and UTDFN (KC) variants. The LTC6247CMS8#PBF is a non-shutdown version; its pin 1–8 are strictly IN+/–/OUT for both amplifiers and supplies. Confusion arises because the family datasheet describes shutdown across multiple packages-but it is physically absent on the MS8 variant.
What is the maximum capacitive load the LTC6247CMS8#PBF can drive stably in unity-gain configuration?
The LTC6247CMS8#PBF remains stable driving ≥10,000pF capacitive loads in unity-gain configuration when a 10Ω to 49.9Ω series output resistor is used, as validated in Figure G35 of the datasheet. Without series resistance, instability occurs above ~100pF; adding 20Ω isolates the op amp's output impedance from the load, preserving phase margin and preventing peaking or oscillation in ADC input buffering applications.
Can the LTC6247CMS8#PBF be used as a drop-in replacement for older dual op amps like the LT1364 or AD8066?
No, the LTC6247CMS8#PBF is not a pin-compatible or functional drop-in replacement for LT1364 (SO-8, no rail-to-rail input) or AD8066 (SO-8, different pinout, no shutdown in base variant). While it matches their bandwidth class, its MSOP-8 pinout (OUT A, –IN A, +IN A, V–, V+, OUT B, –IN B, +IN B) differs from SO-8 layouts, and its rail-to-rail I/O requires redesign of biasing networks. It serves as a next-generation upgrade-not a direct swap.
LTC6247CMS8#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:
- Last Time Buy
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 90V/µs
- Gain Bandwidth Product:
- 180 MHz
- -3db Bandwidth:
- 120 MHz
- Current - Input Bias:
- 400 nA
- Voltage - Input Offset:
- 100 µV
- Current - Supply:
- 1.25mA (x2 Channels)
- Current - Output / Channel:
- 100 mA
- Voltage - Supply Span (Min):
- 2.5 V
- Voltage - Supply Span (Max):
- 5.25 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
LTC6247CMS8#PBF FAQ
1.How can I place an order for LTC6247CMS8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6247CMS8#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 LTC6247CMS8#PBF reliable?
The price and inventory of LTC6247CMS8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6247CMS8#PBF is usually 5 days.
3.What payment methods are accepted for LTC6247CMS8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6247CMS8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6247CMS8#PBF?
LTC6247CMS8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6247CMS8#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 LTC6247CMS8#PBF?
For technical support, including LTC6247CMS8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6247CMS8#PBF requirements.
6.How does Aetrix verify that LTC6247CMS8#PBF is sourced from the original manufacturer or authorized distributors?
All LTC6247CMS8#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 LTC6247CMS8#PBF meets industry standards.
7.What is the process for return or replacement of LTC6247CMS8#PBF?
All LTC6247CMS8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6247CMS8#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 LTC6247CMS8#PBF part is unused and in its original packaging.
Return procedure for LTC6247CMS8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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