PREF3440QDBVRQ1 Texas Instruments Integrated Circuit (SOT23 (6-Pin)) In Stock
Texas Instruments PREF3440QDBVRQ1 is an AEC-Q100 automotive-grade series voltage reference with a precise 4.096 V output, 6 ppm/°C maximum temperature coefficient, and only 95 µA quiescent current. Housed in a compact 6-pin SOT-23 package, it delivers ultra-low drift for high-accuracy automotive ADC and DAC reference applications. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- SOT23 (6-Pin)
- Pin Count
- 6
- Lifecycle
- OBSOLETE
- Datasheet
- PREF3440QDBVRQ1 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of PREF3440QDBVRQ1?
- 6 ppm/°C maximum temperature coefficient ensuring stable 4.096 V reference across the full -40°C to +125°C automotive temperature range
- 95 µA ultra-low quiescent current enabling always-on reference operation in battery-powered and low-power automotive modules
- AEC-Q100 qualified in a 6-pin SOT-23 package for reliable deployment in ADAS, powertrain, and body-control unit designs
What is PREF3440QDBVRQ1 used for?
The PREF3440QDBVRQ1 is engineered for automotive battery management systems, ADAS radar and camera front-end ADC references, and powertrain ECU analog signal chains where a stable 4.096 V precision reference is required across the full -40°C to +125°C junction temperature range. Its 95 µA quiescent current makes it well suited for always-on sensor interfaces in body control modules and keyless entry systems that must maintain reference accuracy even in deep sleep power modes.
What are the specifications of PREF3440QDBVRQ1?
| YTEOL | 0 |
| Analog IC - Other Type | THREE TERMINAL VOLTAGE REFERENCE |
| Screening Level | AEC-Q100 |
| Package | SOT23 (6-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Where can I find the PREF3440QDBVRQ1 datasheet?
PREF3440QDBVRQ1 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for PREF3440QDBVRQ1?
Compatible alternatives and drop-in replacements for PREF3440QDBVRQ1:
Frequently Asked Questions
What temperature coefficient does the PREF3440QDBVRQ1 achieve and how does it affect 16-bit ADC accuracy over the automotive temperature range?
The PREF3440QDBVRQ1 specifies a maximum 6 ppm/°C temperature coefficient. Over a 165°C automotive range (-40°C to +125°C) the total drift is at most 990 ppm, corresponding to approximately 65 mV of reference shift. For a 16-bit ADC with 4.096 V full scale, this 65 mV drift represents roughly 1040 LSB error, so in 16-bit precision designs a lower-drift device or temperature compensation algorithm is advisable.
How does the 95 µA quiescent current of the PREF3440QDBVRQ1 benefit battery-backed automotive modules?
At 95 µA quiescent current and a 12 V automotive battery, the PREF3440QDBVRQ1 draws only 1.14 mW in standby. A 50 Ah vehicle battery can sustain this load for over 500 hours, meaning a keyless entry or tyre-pressure monitoring module can keep the reference active continuously for weeks on standby without measurably draining the battery between drive cycles.
Which automotive safety standard qualifies the PREF3440QDBVRQ1 and how does that simplify design certification?
The device carries AEC-Q100 Grade qualification, confirming component-level reliability under automotive stress tests including high-temperature operating life, temperature cycling from -40°C to +125°C, and electrostatic discharge. Using a pre-qualified AEC-Q100 component shortens IATF 16949 and ISO 26262 component qualification timelines, typically eliminating 4 to 8 weeks of per-part stress-test planning from the project schedule.
For a compact ECU layout, how does the 6-pin SOT-23 package of the PREF3440QDBVRQ1 compare to larger voltage reference packages?
The 6-pin SOT-23 package body measures approximately 2.9 mm × 1.6 mm, occupying under 5 mm² of PCB area. Compared to an 8-pin SOIC reference occupying roughly 30 mm², the SOT-23 saves over 80% board space, allowing the reference to be placed within 5 mm of the ADC reference input pin to minimize trace inductance and noise pickup in automotive high-frequency EMI environments.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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