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Analog Devices Inc. LTC6247CMS8#TRPBF
- Part No.:
- LTC6247CMS8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC6247CMS8#TRPBF.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:7,151
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Product details
Overview
LTC6247CMS8#TRPBF from Analog Devices is a dual, rail-to-rail input/output operational amplifier optimized for low-power, high-speed signal conditioning. It delivers 180MHz gain-bandwidth product, 90V/µs slew rate, 4.2nV/√Hz input voltage noise, and operates from 2.5V to 5.25V supply with 1mA quiescent current per amplifier. It is used in precision ADC driver circuits where wide input/output swing and fast settling are required.
For engineers reviewing the LTC6247CMS8#TRPBF datasheet, LTC6247CMS8#TRPBF pinout, LTC6247CMS8#TRPBF application, or LTC6247CMS8#TRPBF equivalent, this page provides verified package mapping (MSOP-8), confirmed shutdown functionality (SHDN pin), exact dual-amplifier channel behavior, temperature-stable CMRR (110dB), and real-world performance data including 74ns 0.1% settling time and –90dB crosstalk at 1MHz.
Technical Context
The LTC6247CMS8#TRPBF employs a dual-input-stage architecture: a PNP pair active from V– to ~1.2V below V+, and an NPN pair taking over near the positive rail-enabling true rail-to-rail common-mode input range (0V to VS). This design ensures consistent offset and bias behavior across the full input range without discontinuity.
Each amplifier features independent shutdown control via dedicated SHDN pins (Pin 5 for Amp A, Pin 6 for Amp B in MS8 package), reducing supply current to 42µA per channel when asserted. Output stage uses complementary common-emitter drivers enabling ±50mA output current and rail-to-rail swing within 55mV of either rail at 5mA load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 180MHz - supports stable unity-gain operation up to 120MHz closed-loop bandwidth, suitable for driving 2.2Msps ADCs. |
| Slew Rate | 90V/µs - enables clean 2V step response with 74ns 0.1% settling time, critical for fast pulse amplification. |
| Input Voltage Noise | 4.2nV/√Hz @ 100kHz - low-noise performance preserves SNR in sensor front-ends and precision instrumentation. |
| Supply Current per Amp | 1mA max @ 25°C - enables dual-channel high-speed amplification in battery-powered systems with tight power budgets. |
| Input Common Mode Range | 0V to VS - accepts signals from ground to supply rail, eliminating level-shifting needs in single-supply systems. |
| Output Swing | Rail-to-rail - delivers full dynamic range into ADC reference buffers or analog multiplexers without headroom loss. |
| CMRR | 110dB - rejects supply and common-mode interference in noisy industrial environments. |
Pinout & Package
Package: 8-Lead Plastic MSOP (LTDWH), 3mm × 3mm × 1.1mm body, exposed pad connected to V–.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: OUT A | Amplifier A output | Capable of sourcing/sinking ≥50mA; rail-to-rail swing with <55mV saturation at 5mA load. |
| 2: –IN A | Inverting input A | Valid from V– to V+; differential input capacitance = 2pF, enabling stable high-frequency feedback networks. |
| 3: +IN A | Non-inverting input A | Same rail-to-rail common-mode range as –IN A; input bias current ≤100nA at mid-supply. |
| 4: V– | Negative supply / ground reference | Exposed pad must be soldered to PCB ground plane for thermal and electrical integrity; θJA = 163°C/W. |
| 5: SHDN A | Shutdown control A (active-low) | Pulls supply current to 42µA when ≤0.8V; logic-compatible with 1.8V/3.3V microcontrollers. |
| 6: SHDN B | Shutdown control B (active-low) | Independent control for second amplifier; allows selective channel disabling in multi-stage designs. |
| 7: OUT B | Amplifier B output | Electrically identical to OUT A; crosstalk to OUT A is –90dB at 1MHz, supporting isolated dual-path signal chains. |
| 8: V+ | Positive supply | Accepts 2.5V–5.25V; PSRR = 73dB, minimizing sensitivity to supply ripple in mixed-signal systems. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O with dual-input stage | Enables seamless signal handling from ground to supply rail without clipping or discontinuity in offset or gain. |
| Independent per-channel shutdown | Reduces system-level power by >99% per disabled amplifier, ideal for duty-cycled sensor interfaces. |
| Low 4.2nV/√Hz voltage noise | Maintains >70dB SNR in 350kHz FFT applications, validated in ADC driver reference circuits (e.g., LTC2366). |
| 74ns 0.1% settling time | Supports accurate sampling of fast transients in oscilloscope front-ends and digital acquisition systems. |
| –90dB crosstalk at 1MHz | Preserves channel isolation in dual-channel instrumentation, audio summing, or differential line drivers. |
Applications
| ADC Driver Circuit | Rail-to-Rail Buffer |
|---|---|
|
Use Scenario: Driving the analog input of a 12-bit, 2.2Msps SAR ADC (e.g., LTC2366) from a 3.3V single supply. IC Role / Device Role / Timing Role: Dual op amp configured as gain-of-2 noninverting driver with fast settling and low distortion. Use Value: Achieves 82dB SFDR and 70dB SNR at 350kHz input frequency, meeting high-fidelity data acquisition requirements. |
Use Scenario: Level-shifting and buffering a 0–3.3V sensor output before feeding into a microcontroller's 12-bit ADC. IC Role / Device Role / Timing Role: Unity-gain buffer with rail-to-rail input/output to preserve full signal range without external biasing. Use Value: Eliminates need for external resistive dividers or charge pumps, reducing BOM count and layout area. |
| Active Filter Stage | Battery-Powered Instrumentation |
|
Use Scenario: Implementing a 2nd-order Sallen-Key low-pass filter at 1MHz cutoff in a portable test instrument. IC Role / Device Role / Timing Role: Dual amplifier providing both gain and filtering; one section as integrator, second as summer/buffer. Use Value: Maintains phase linearity and low group delay due to 180MHz GBW, avoiding signal smearing in time-domain measurements. |
Use Scenario: Signal conditioning for a handheld gas sensor with 10-hour battery life requirement. IC Role / Device Role / Timing Role: Dual-channel amplifier powering sensor excitation and amplifying weak mV-level outputs. Use Value: 1mA per channel draw extends runtime; shutdown mode cuts idle current to 42µA, enabling ultra-low-power sleep states. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual high-speed rail-to-rail op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADA4897-2ARMZ | Lower noise (1nV/√Hz), higher supply current (3.6mA), no shutdown pins, SOIC-8 only. | Better for ultra-low-noise preamps but incompatible with power-gated architectures requiring per-channel disable. | Select ADA4897-2ARMZ when noise dominates over power; avoid if shutdown control or MSOP-8 footprint is required. |
| OPA2837IDGKT | Higher GBW (350MHz), higher supply current (5.3mA), no rail-to-rail input, VSSOP-8 package. | Suitable for higher-frequency closed-loop gains but cannot accept inputs near V– or V+, limiting single-supply flexibility. | Select OPA2837IDGKT for >200MHz small-signal bandwidth; avoid when rail-to-rail input or low IQ is mandatory. |
Compared with ADA4897-2ARMZ and OPA2837IDGKT, the LTC6247CMS8#TRPBF uniquely balances 180MHz bandwidth, 1mA IQ, rail-to-rail I/O, and dual independent shutdown in an MSOP-8 package-making it optimal for space-constrained, battery-aware, single-supply precision signal chains.
Availability
LTC6247CMS8#TRPBF is available at Aetrix Electronics and suitable for ADC driver circuits, portable instrumentation, and active filter designs requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LTC6247CMS8#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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC6247CMS8#TRPBF belongs to the LTC6246/LTC6247/LTC6248 family-designed specifically for low-voltage, high-frequency signal conditioning where rail-to-rail operation, low power, and low noise are simultaneously required.
FAQ
What is the operating temperature range for the LTC6247CMS8#TRPBF?
The LTC6247CMS8#TRPBF is specified for 0°C to 70°C ambient operation (C-grade), with full electrical performance guaranteed across this range. Its absolute maximum junction temperature is 150°C, and thermal resistance (θJA) is 163°C/W in the MSOP-8 package with standard PCB copper.
Does the LTC6247CMS8#TRPBF support true rail-to-rail input and output?
Yes, the LTC6247CMS8#TRPBF supports true rail-to-rail input (0V to VS) and output (within 55mV of either rail at 5mA load). Its dual-input-stage architecture-switching between PNP and NPN pairs-ensures continuous operation across the entire common-mode range without dead zones or discontinuities.
How does the shutdown function work on the LTC6247CMS8#TRPBF?
The LTC6247CMS8#TRPBF has two independent active-low shutdown pins: Pin 5 (SHDN A) and Pin 6 (SHDN B). When pulled ≤0.8V relative to V–, each disables its respective amplifier and reduces supply current to 42µA. Floating these pins enables normal operation. Turn-on/off times are 5µs and 2µs respectively.
What is the typical input offset voltage for the LTC6247CMS8#TRPBF?
The LTC6247CMS8#TRPBF has a typical input offset voltage of ±100µV at mid-supply (VCM = VS/2) and 25°C. In the NPN-input region (VCM = V+ – 0.5V), offset increases to ±1.75mV typical. The device also specifies a maximum offset match of ±700µV between channels under matched conditions.
Can the LTC6247CMS8#TRPBF drive heavy capacitive loads?
The LTC6247CMS8#TRPBF is not unity-gain stable into arbitrary capacitive loads. With AV = 1 and RS = 20Ω series output resistor, it remains stable up to 1000pF. For AV = 2 and RS = 49.9Ω, stability extends to 10,000pF. Direct capacitive loading without isolation risks peaking or oscillation.
LTC6247CMS8#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:
- 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#TRPBF FAQ
1.How can I place an order for LTC6247CMS8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6247CMS8#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 LTC6247CMS8#TRPBF reliable?
The price and inventory of LTC6247CMS8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6247CMS8#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC6247CMS8#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6247CMS8#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6247CMS8#TRPBF?
LTC6247CMS8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6247CMS8#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 LTC6247CMS8#TRPBF?
For technical support, including LTC6247CMS8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6247CMS8#TRPBF requirements.
6.How does Aetrix verify that LTC6247CMS8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC6247CMS8#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 LTC6247CMS8#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC6247CMS8#TRPBF?
All LTC6247CMS8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6247CMS8#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 LTC6247CMS8#TRPBF part is unused and in its original packaging.
Return procedure for LTC6247CMS8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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