LTC6247IDC#TRMPBF Analog Devices Integrated Circuit (Small Outline No-lead) In Stock
LTC6247IDC#TRMPBF is a dual 180 MHz, rail-to-rail input and output precision operational amplifier with 1 µA bias current and 100 dB CMRR in a compact DFN package, enabling wide-bandwidth signal conditioning in low-power precision systems.
- Manufacturer
- Analog Devices
- Package
- Small Outline No-lead
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- LTC6247IDC#TRMPBF Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 180 MHz gain-bandwidth product enables active filter and ADC driver designs with bandwidths up to tens of megahertz at moderate closed-loop gains
- Rail-to-rail input and output (RRIO) swings within millivolts of both supply rails, maximizing dynamic range on single 3.3 V and 5 V supplies
- 1 µA maximum input bias current at 25 °C minimizes offset errors with high-impedance sensors and high-value feedback resistors
- 100 dB typical common-mode rejection ratio suppresses noise on differential sensor signal lines in industrial environments
- Dual op-amp in a single DFN package reduces BOM count and PCB footprint for compact multi-channel signal chain designs
Applications
The LTC6247IDC#TRMPBF serves as an ADC driver and active anti-aliasing filter in precision data acquisition front-ends where 180 MHz bandwidth supports sample rates up to several megasamples per second with flat frequency response. Its rail-to-rail input and output and 1 µA bias current make it suitable for high-impedance photodiode transimpedance amplifiers and strain-gauge signal conditioning in medical instruments. It is also used in communication test equipment and portable oscilloscope front-ends where low supply current and small DFN package footprint are critical design constraints.
Specifications
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1719 |
| YTEOL | 0 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | VOLTAGE-FEEDBACK |
| Average Bias Current-Max (IIB) | 1.5 µA |
| Bias Current-Max (IIB) @25C | 1 µA |
| Common-mode Reject Ratio-Min | 76dB |
| Common-mode Reject Ratio-Nom | 100dB |
| Frequency Compensation | YES |
| Input Offset Voltage-Max | 3750 µV |
| JESD-30 Code | S-PDSO-N8 |
| JESD-609 Code | e3 |
| Low-Bias | NO |
| Low-Offset | NO |
| Micropower | NO |
| Number of Functions | 2 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOLCC8,.08,18 |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE |
| Packing Method | TR |
| Power | NO |
| Programmable Power | NO |
| Slew Rate-Min | 50V/us |
| Slew Rate-Nom | 55V/us |
| Supply Current-Max | 3.6mA |
| Supply Voltage Limit-Max | 5.5V |
| Supply Voltage-Nom (Vsup) | 2.7V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.45mm |
| Terminal Position | DUAL |
| Unity Gain BW-Nom | 150000 |
| Voltage Gain-Min | 2500 |
| Wideband | YES |
| Package | Small Outline No-lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.33.00.01 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What closed-loop bandwidth can be achieved with LTC6247IDC#TRMPBF at a gain of 10 V/V for an ADC driver stage?
The LTC6247IDC#TRMPBF has a 180 MHz gain-bandwidth product, so at a closed-loop gain of 10 V/V the -3 dB bandwidth is approximately 18 MHz. This is sufficient to drive 12-bit to 16-bit pipeline ADCs sampling at 5 Msps to 10 Msps with adequate settling time, while the rail-to-rail output ensures the full ADC input range is utilized on a single 5 V supply.
How does the 1 µA input bias current of LTC6247IDC#TRMPBF affect resistor selection in a transimpedance amplifier for photodiode sensing?
With a maximum bias current of 1 µA at 25 °C, the LTC6247IDC#TRMPBF introduces a DC output offset of only 100 mV when used with a 100 kilohm transimpedance resistor. This low bias current allows feedback resistors up to several megaohms to be used in low-light photodiode preamplifiers without creating excessive DC error, enabling detection of photocurrent signals in the nanoampere range in fluorescence spectroscopy and industrial optical sensors.
What common-mode rejection ratio does LTC6247IDC#TRMPBF achieve, and why does this matter in industrial sensor applications?
The LTC6247IDC#TRMPBF achieves 76 dB minimum and 100 dB typical common-mode rejection ratio. In an industrial 4-to-20 mA loop or thermocouple amplifier, the sensor ground may differ from the ADC ground by several hundred millivolts due to cable resistance and ground loops. A 100 dB CMRR attenuates a 1 V common-mode error to only 10 µV at the output, preserving measurement accuracy to better than 0.01% of full scale.
Can LTC6247IDC#TRMPBF operate from a single 3.3 V supply in a low-power IoT sensor node?
Yes, the LTC6247IDC#TRMPBF is rated for single-supply operation over the standard voltage range compatible with 3.3 V systems, and its rail-to-rail input and output allows the full 0 V to 3.3 V signal range to be processed. The dual op-amp configuration in the DFN package provides 2 amplifier channels in approximately 2 mm × 2 mm board area, making it practical for multi-channel sensor front-ends in compact IoT nodes and wearable devices where board space is measured in square millimetres.
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