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Analog Devices Inc. LTC6247CDC#TRMPBF
- Part No.:
- LTC6247CDC#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LTC6247CDC#TRMPBF.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:392
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Product details
Overview
LTC6247CDC#TRMPBF 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 while consuming only 1mA per amplifier. It is used in precision ADC driver circuits requiring wide bandwidth and full rail-to-rail swing at low supply current.
For engineers reviewing the LTC6247CDC#TRMPBF datasheet, LTC6247CDC#TRMPBF pinout, LTC6247CDC#TRMPBF application, or LTC6247CDC#TRMPBF equivalent, this page provides verified package mapping (8-lead DFN), confirmed shutdown functionality, real-world settling time (74ns to 0.1%), CMRR (110dB), and validated alternatives for low-voltage high-frequency op amp selection.
Technical Context
The LTC6247CDC#TRMPBF 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 operation. Its unity-gain stable design supports AV = 1 configurations with 120MHz –3dB bandwidth and 60° phase margin across 2.5V–5.25V supplies.
It integrates active bias current cancellation for PNP inputs (IB ≤ ±350nA), fast power-down (tOFF = 2µs, ISD = 42µA), and robust output drive (±50mA) with rail-to-rail swing (≤150mV from rails at 5mA). Input offset voltage is trimmed to ≤500µV (PNP mode) and ≤3.75mV (NPN mode) over temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 180MHz - enables stable unity-gain amplification up to 120MHz closed-loop bandwidth |
| Slew Rate | 90V/µs - supports clean 2V step response in <74ns (0.1%) for fast transient signals |
| Input Voltage Noise | 4.2nV/√Hz @ 100kHz - preserves SNR in low-amplitude sensor/ADC front-end stages |
| Supply Current per Amp | 1mA max @ 5V - allows dual-channel high-speed amplification within tight power budgets |
| Input Common-Mode Range | 0V to VS - accepts signals from negative rail to positive rail without clipping |
| Output Swing | Rail-to-rail - delivers full dynamic range into 1kΩ loads, ≤150mV from rails at 5mA |
| CMRR | 110dB - rejects supply- and ground-related interference in single-supply systems |
Pinout & Package
Package: 8-lead (2mm × 2mm × 0.8mm) plastic DFN (DC package), exposed pad connected to V–, RoHS-compliant, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: OUT A | Amplifier A output | Capable of sourcing/sinking ≥50mA; rail-to-rail swing with <150mV headroom at 5mA |
| 2: –IN A | Inverting input of Amp A | Valid from V– to V+; part of dual-input PNP/NPN stage for full rail coverage |
| 3: +IN A | Non-inverting input of Amp A | Same common-mode range as –IN A; matched offset and bias current vs –IN A |
| 4: V– | Negative supply / ground reference | Exposed pad (Pin 9) is internally tied to V–; must be soldered to PCB for thermal and electrical integrity |
| 5: V+ | Positive supply (2.5V–5.25V) | Supports single-supply operation; PSRR ≥69dB ensures stability against supply ripple |
| 6: OUT B | Amplifier B output | Independent output; identical AC/DC specs to OUT A; no crosstalk degradation (>90dB @ 1MHz) |
| 7: –IN B | Inverting input of Amp B | Matched to –IN A (ΔVOS ≤ ±700µV); enables precision differential or dual-path designs |
| 8: +IN B | Non-inverting input of Amp B | Same input structure and noise performance as +IN A; supports matched dual-channel buffering |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables direct interfacing with ADCs, DACs, and logic I/O without level-shifting circuitry |
| 180MHz GBW with 1mA supply | Doubles bandwidth-per-milliamp versus comparable rail-to-rail op amps (e.g., AD8605: 10MHz/0.8mA) |
| Active input bias cancellation | Maintains IB ≤ ±350nA across VCM, critical for high-impedance sensor interfaces and precision integrators |
| Fast shutdown (2µs off, 5µs on) | Allows dynamic power gating in battery-powered instruments without signal disruption |
| Low 1/f noise (1.6µVP-P, 0.1–10Hz) | Minimizes drift in DC-coupled medical, weigh-scale, and strain-gauge signal chains |
| Specified from 0°C to 70°C | Guaranteed performance for commercial-grade instrumentation, data acquisition, and industrial control |
Applications
| ADC Driver | Rail-to-Rail Buffer |
|---|---|
|
Use Scenario: Driving the analog input of a 16-bit SAR ADC (e.g., LTC2366) with 2.2Msps sampling rate and 350kHz input tones. IC Role / Device Role / Timing Role: Single-supply, gain-of-2 buffer with 70dB SNR and 82dB SFDR preservation at 350kHz. Use Value: Full 0–2.5V input range utilization with <0.2% differential gain error and 0.08° phase error per datasheet test conditions. |
Use Scenario: Isolating and scaling a 0–3.3V microcontroller GPIO output to drive a 100Ω video line or capacitive load. IC Role / Device Role / Timing Role: Unity-gain voltage follower with 120MHz bandwidth and 90V/µs slew rate. Use Value: Maintains signal integrity up to 10MHz with <1% overshoot when driving 100pF via 20Ω series resistor. |
| Active Filter Stage | Battery-Powered Instrumentation |
|
Use Scenario: 2nd-order Sallen-Key low-pass filter (fc = 1MHz) in portable spectrum analyzer front-end. IC Role / Device Role / Timing Role: Dual-op-amp configuration: one as filter amplifier, second as reference buffer. Use Value: Achieves –3dB point within ±1.5% tolerance and harmonic distortion <–78dBc at 2MHz due to low HD2/HD3. |
Use Scenario: Signal conditioning for handheld gas sensor with 3.3V Li-ion supply and 10-hour runtime requirement. IC Role / Device Role / Timing Role: Low-noise transimpedance amplifier and programmable gain stage. Use Value: 4.2nV/√Hz noise + 1mA quiescent current extends battery life while preserving µV-level resolution. |
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 |
|---|---|---|---|
| AD8606ARMZ | Lower GBW (10MHz), higher supply current (1.2mA), no shutdown pin, 12-bit precision grade | Acceptable for DC/low-frequency sensor buffering but not for >1MHz ADC drivers or fast-settling filters | Select when cost and DC accuracy dominate over speed and power-down capability |
| OPA2350UA | Higher noise (7nV/√Hz), lower slew rate (33V/µs), same 8-pin SOIC package, no shutdown | Compatible for general-purpose buffering but unsuitable for high-SNR, high-fidelity signal paths | Choose for legacy SOIC footprint compatibility where noise and speed margins are relaxed |
Compared with LTC6247CDC#TRMPBF, AD8606ARMZ trades 170MHz bandwidth and shutdown for lower cost and broader DC specs, while OPA2350UA offers SOIC packaging at the expense of 2.7× higher voltage noise and 3.7× slower slew rate-making LTC6247CDC#TRMPBF the only option meeting simultaneous requirements for 180MHz GBW, 1mA supply, rail-to-rail I/O, and power-down in an 8-lead DFN.
Availability
LTC6247CDC#TRMPBF is available at Aetrix Electronics and suitable for ADC driver circuits, rail-to-rail buffering, active filter stages, and battery-powered instrumentation requiring stable component supply with guaranteed 0°C to 70°C operation.
Supply support for LTC6247CDC#TRMPBF 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 LTC6247CDC#TRMPBF belongs to the LTC6246/LTC6247/LTC6248 family-designed specifically for low-voltage, high-speed signal conditioning where rail-to-rail operation, low noise, and minimal power consumption are essential.
FAQ
What is the operating temperature range for LTC6247CDC#TRMPBF?
The LTC6247CDC#TRMPBF is specified for operation from 0°C to 70°C. It is part of the "C" grade variant of the LTC6247 family, with guaranteed performance across this commercial temperature range. Electrical characteristics-including gain-bandwidth, input offset voltage, and supply current-are tested and warranted within these limits.
Does LTC6247CDC#TRMPBF include a shutdown feature?
Yes, LTC6247CDC#TRMPBF includes an active-low shutdown pin (SHDN) that reduces supply current per amplifier to 42µA typical. The shutdown threshold is 0.8V (max) for logic low and 2.0V (min) for logic high, referenced to V–. This function is fully supported in the DC-package variant and enables rapid power cycling in portable equipment.
What is the maximum capacitive load the LTC6247CDC#TRMPBF can drive stably?
LTC6247CDC#TRMPBF remains stable driving ≥1000pF with a 10Ω series output resistor in unity-gain configuration. Without external isolation, stability degrades beyond ~100pF; the datasheet recommends RS = 20Ω for CL ≤ 100pF and RS = 49.9Ω for CL ≤ 1000pF to maintain <10% overshoot and preserve phase margin.
How does the input stage architecture affect DC performance of LTC6247CDC#TRMPBF?
LTC6247CDC#TRMPBF uses dual PNP/NPN input stages: PNP dominates below V+ – 1.2V (VOS ≤ ±500µV), NPN above (VOS ≤ ±3.75mV). This causes a measurable offset transition near VCM = 3.8V at 5V supply. Designers must avoid crossing this region in precision DC applications or use trimming techniques to minimize discontinuity.
Is LTC6247CDC#TRMPBF pin-compatible with other variants in the LTC6247 family?
No-LTC6247CDC#TRMPBF uses the 8-lead DFN (DC) package with specific pinout (OUT A, –IN A, +IN A, V–, V+, OUT B, –IN B, +IN B). It is not pin-compatible with MS8, TSOT-23, or MS10 variants, which have different pin counts, assignments, and exposed pad configurations. PCB layout must match the DC package footprint exactly.
LTC6247CDC#TRMPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- 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-DFN (2x2)
LTC6247CDC#TRMPBF FAQ
1.How can I place an order for LTC6247CDC#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6247CDC#TRMPBF 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 LTC6247CDC#TRMPBF reliable?
The price and inventory of LTC6247CDC#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6247CDC#TRMPBF is usually 5 days.
3.What payment methods are accepted for LTC6247CDC#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6247CDC#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6247CDC#TRMPBF?
LTC6247CDC#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6247CDC#TRMPBF 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 LTC6247CDC#TRMPBF?
For technical support, including LTC6247CDC#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6247CDC#TRMPBF requirements.
6.How does Aetrix verify that LTC6247CDC#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LTC6247CDC#TRMPBF 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 LTC6247CDC#TRMPBF meets industry standards.
7.What is the process for return or replacement of LTC6247CDC#TRMPBF?
All LTC6247CDC#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6247CDC#TRMPBF, 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 LTC6247CDC#TRMPBF part is unused and in its original packaging.
Return procedure for LTC6247CDC#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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