LT1389BCS8-2.5#PBF Analog Devices Integrated Circuit (Small Outline Packages) In Stock
Analog Devices LT1389B is an ultra-low-power nano-power 2.5 V precision voltage reference with 0.05% initial accuracy and two-terminal SOT-23/SOIC-8 interface. It draws under 6 µA quiescent current for always-on battery systems. Available in stock worldwide with competitive pricing.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- LT1389BCS8-2.5#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $5.1300(MOQ 19)
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Ultra-low 6 µA maximum quiescent current extends battery life in always-on reference circuits for handheld and IoT devices
- Tight 0.05% initial accuracy at 2.5 V output with low temperature coefficient suitable for precision ADC and DAC references
- Two-terminal shunt reference configuration simplifies PCB layout with only a series resistor needed for biasing
Applications
The LT1389BCS8-2.5#PBF is designed for battery-powered data acquisition systems, portable medical instruments, and low-power IoT nodes where a stable 2.5 V reference must remain active at all times without draining the battery. As a two-terminal shunt reference, it sets the ADC or DAC reference voltage with only a single bias resistor, minimizing BOM complexity. Its precision 0.05% initial accuracy makes it suitable for 12-bit and 16-bit converter reference applications requiring stable output across temperature.
Specifications
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1610 (S8) |
| YTEOL | 10 |
| Analog IC - Other Type | TWO TERMINAL VOLTAGE REFERENCE |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Output Voltage-Max | 2.50125V |
| Output Voltage-Min | 2.49875V |
| Output Voltage-Nom | 2.5V |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Temp Coef of Voltage-Max | 20ppm/°C |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Trim/Adjustable Output | NO |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Malaysia |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How low is the quiescent current of the LT1389BCS8-2.5#PBF, and how does that compare to standard precision references?
The LT1389BCS8-2.5#PBF draws a maximum of 6 µA quiescent current, compared to 100 µA to 500 µA for typical bandgap references like the REF02. In a coin-cell battery with 200 mAh capacity, a 6 µA drain allows over 3.8 years of continuous operation, making it ideal for always-on references in energy-harvesting and remote sensor nodes.
For a 12-bit ADC reference application, how accurate is the LT1389BCS8-2.5 output voltage?
The LT1389B variant delivers 0.05% initial accuracy at the 2.5 V output, equivalent to ±1.25 mV. For a 12-bit ADC with a 2.5 V full-scale range (LSB = 0.61 mV), a ±1.25 mV reference error represents roughly ±2 LSB, which is acceptable for most industrial measurement applications. The low temperature coefficient further limits drift to only a few LSBs over a -40°C to +85°C range.
As a two-terminal shunt reference, how is the LT1389BCS8-2.5#PBF biased in a typical circuit?
The two-terminal shunt reference requires only a single series resistor between the supply voltage and the reference cathode. The resistor value is chosen so that at minimum supply voltage, at least the minimum operating current (typically 45 µA) flows through the device. At 5 V supply feeding a 2.5 V reference, a 47 kOhm resistor biases the part at approximately 53 µA, well within its operating range.
Over what temperature range does the LT1389BCS8-2.5#PBF maintain its specified output voltage accuracy?
The LT1389BCS8 is rated for the commercial temperature range of 0°C to 70°C, with output voltage deviating by a small temperature coefficient across this span. For designs requiring operation over the full -40°C to +125°C industrial range, Analog Devices offers the LT1389I variant, which maintains tighter accuracy over the wider temperature range.
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About Analog Devices
Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
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