LTC6400IUD-26#TRPBF Analog Devices Integrated Circuit (Quad Flat No-Lead) In Stock
The LTC6400IUD-26 is a single differential amplifier with 26 dB gain, 3.5 V supply, and 75 dB typical CMRR, designed for automotive ADC driving in a compact 16-pin QFN package. It delivers low 2 mV input offset voltage and wideband signal conditioning. Stocked globally with worldwide shipping.
- Manufacturer
- Analog Devices
- Package
- Quad Flat No-Lead
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- LTC6400IUD-26#TRPBF 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
- 26 dB fixed gain with 75 dB typical CMRR enables precise differential-to-single-ended conversion for high-resolution ADC interfaces
- 3.5 V single-supply operation with automotive AEC-Q100 qualification supports 12 V system power rails through regulators
- 16-pin QFN package with exposed pad minimizes board area and thermal resistance in space-constrained automotive sensor modules
Applications
The LTC6400IUD-26 is optimized for driving high-speed ADC inputs in automotive radar, LIDAR signal chains, and engine management sensor front-ends where 26 dB of differential gain and wideband CMRR are needed. It conditions differential signals from bridges, sensors, or transformers before digitization, rejecting common-mode noise from the noisy automotive power environment. Its compact QFN footprint and single 3.5 V supply simplify integration into battery-powered or regulated automotive subsystems.
Specifications
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1691 |
| YTEOL | 0 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | VOLTAGE-FEEDBACK |
| Common-mode Reject Ratio-Min | 50dB |
| Common-mode Reject Ratio-Nom | 75dB |
| Frequency Compensation | YES |
| Input Offset Voltage-Max | 2000 µV |
| JESD-30 Code | S-PQCC-N16 |
| JESD-609 Code | e3 |
| Low-Offset | NO |
| Micropower | YES |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Power | NO |
| Programmable Power | NO |
| Qualification Status | Not Qualified |
| Slew Rate-Nom | 6670V/us |
| Supply Current-Max | 0.102mA |
| Supply Voltage Limit-Max | 3.6V |
| Supply Voltage-Nom (Vsup) | 3V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Quad Flat No-Lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What gain and CMRR does the LTC6400IUD-26 provide for ADC-driver applications in automotive systems?
The LTC6400IUD-26 offers a fixed 26 dB voltage gain with a typical common-mode rejection ratio of 75 dB and a minimum of 50 dB. This combination effectively amplifies small differential sensor signals while attenuating common-mode switching noise present on 12 V automotive ground planes, reducing ADC input errors in 12-bit and 14-bit digitizer chains.
How does the 2 mV maximum input offset voltage affect measurement accuracy in a bridge-sensor interface?
With a 2000 µV maximum input offset voltage and 26 dB gain, the referred-to-output offset is up to approximately 100 mV, which must be budgeted against the ADC full-scale range. For a 1 V ADC full-scale with 12-bit resolution, this represents about 0.4 LSB at the output, making the LTC6400IUD-26 suitable for medium-precision sensor interfaces without trimming.
When should an engineer choose the LTC6400IUD-26 over a discrete op-amp differential stage for an automotive radar front-end?
The LTC6400IUD-26 integrates gain-setting resistors internally with 26 dB precision, eliminating the 4-resistor matching problem that plagues discrete differential stages where resistor tolerance degrades CMRR to below 40 dB. The integrated solution saves at least 4 passive components, reduces layout area by several square millimeters, and ensures 75 dB CMRR across the -40°C to 125°C automotive temperature range without manual trimming.
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