3.3-V, 30-ppm/°C drift, 3.9-µA, 3-pin SOT-23, 3-pin SC70, 8-pin UQFN voltage reference
Product details
Parameters
Package | Pins | Size
Features
- Microsize Packages: SC70-3, SOT-23-3, UQFN-8
- Low Supply Current: 3.9 µA (typ)
- Extremely Low Dropout Voltage: 110 mV (typ)
- High Output Current: ±5 mA
- Low Temperature Drift: 30 ppm/°C (max)
- High Initial Accuracy: ±0.15% (max)
- 0.1-Hz to 10-Hz Noise: 35 µVPP (REF3312)
- Voltage Options: 1.2 V, 1.8 V, 2.5 V, 3 V, 3.3 V
Description
The REF33xx is a low-power, precision, low-dropout voltage reference family available in tiny SC70-3 and SOT-23-3 packages, and in a 1.5-mm × 1.5-mm UQFN-8 package. Small size and low power consumption (5-µA max) make the REF33xx ideal for a wide variety of portable and battery-powered applications.
The REF33xx can be operated at a supply voltage 180 mV above the specified output voltage under normal load conditions, with the exception of the REF3312, which has a minimum supply voltage of 1.7 V. All models are specified for the wide temperature range of –40°C to +125°C.
Technical documentation
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View all 10 | Type | Title | Date | |
|---|---|---|---|
| * | Data sheet | REF33xx 3.9-μA, SC70-3, SOT-23-3, and UQFN-8, 30-ppm/°C Drift Voltage Reference datasheet (Rev. H) | Jan. 16, 2018 |
| Application note | Voltage Reference Design Tips For ADC Pairing (Rev. A) | Jun. 02, 2021 | |
| E-book | Tips and tricks for designing with voltage references (Rev. A) | May 07, 2021 | |
| Functional safety information | REF33xx Functional Safety FIT Rate and Failure Mode Distribution | Dec. 18, 2019 | |
| E-book | Voltage Supervisor and Reset ICs: Tips, Tricks and Basics | Jun. 28, 2019 | |
| Application note | Diode-Based Temperature Measurements (Rev. A) | May 17, 2019 | |
| White paper | Voltage reference selection basics white paper (Rev. A) | Oct. 23, 2018 | |
| Selection guide | Current Sense Amplifiers (Rev. D) | Apr. 04, 2018 | |
| Application note | Level Shifting Signals With Differential Amplifiers (Rev. A) | Apr. 02, 2018 | |
| Technical article | Accurately measure vital signs with low Iq and a small form factor | Mar. 28, 2018 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
DIP-ADAPTER-EVM
Description
Speed up your op amp prototyping and testing with the DIP-Adapter-EVM, which provides a fast, easy and inexpensive way to interface with small, surface-mount ICs. You can connect any supported op amp using the included Samtec terminal strips or wire them directly to existing circuits.
The (...)
Features
- Simplifies prototyping of SMT IC’s
- Supports 6 common package types
- Low Cost
BOOSTXL-3PHGANINV
Description
The BOOSTXL-3PHGANINV evaluation module features a 48-V/10-A three-phase GaN inverter with precision in-line shunt-based phase current sensing for accurate control of precision drives such as servo drives.
MathWorks MATLAB & Simulink example models include the following:
Features
- Wide Input Voltage Range 12-V to 60-V Three Phase GaN Inverter with 7-ARMS Output Current per Phase
- High Accuracy Phase Current Sensing Over Temperature Range From –25°C to 85°C
- Precision In-Line Phase Current Sensing
- TI BoosterPack Compatible Interface
Get started
- See the Get Started sections of (...)
Design tools & simulation
SBOM245A.ZIP (36 KB) - PSpice Model
SBOM246A.TSC (107 KB) - TINA-TI Reference Design
SBOM247A.ZIP (6 KB) - TINA-TI Spice Model
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
Reference designs
TIDA-00913 — The TIDA-00913 reference design realizes a 48V/10A 3-phase GaN inverter with precision in-line shunt-based phase current sensing for accurate control of precision drives such as servo drives. One of the largest challenges with in-line shunt-based phase current sensing is the high common-mode voltage (...)
Design files
-
download TIDA-00913 BOM.pdf (72KB) -
download TIDA-00913 Assembly Drawing.pdf (554KB) -
download TIDA-00913 PCB.pdf (2813KB) -
download TIDA-00913 CAD Files.zip (5637KB) -
download TIDA-00913 Gerber.zip (1217KB)
TIDA-00909 — Low voltage, high-speed drives and/or low inductance brushless motors require higher inverter switching frequencies in the range of 40 kHz to 100 kHz to minimize losses and torque ripple in the motor. The TIDA-00909 reference design achieves that by using a 3-phase inverter with three 80V/10A (...)
Design files
-
download TIDA-00909 BOM.pdf (72KB) -
download TIDA-00909 Assembly Drawing.pdf (554KB) -
download TIDA-00909 PCB.pdf (2813KB) -
download TIDA-00909 CAD Files.zip (5846KB) -
download TIDA-00909 Gerber.zip (1218KB)
CAD/CAE symbols
| Package | Pins | Download |
|---|---|---|
| SC70 (DCK) | 3 | View options |
| SOT-23 (DBZ) | 3 | View options |
Ordering & quality
Information included:
- RoHS
- REACH
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- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Support & training
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