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Shunt voltage references

LM4041A12

ACTIVE

1.2-V precision micropower shunt voltage reference with 0.1% accuracy

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Data sheet

LM4041A12

ACTIVE
Data sheet Order now

Product details

VO (V) 1.225 Initial accuracy (max) (%) 0.1 VO adj (min) (V) 1.225 VO adj (max) (V) 1.225 Iz for regulation (min) (µA) 45 Reference voltage (V) Fixed Rating Catalog Temp coeff (max) (ppm/°C) 100 Operating temperature range (°C) -40 to 85 Iout/Iz (max) (mA) 25
VO (V) 1.225 Initial accuracy (max) (%) 0.1 VO adj (min) (V) 1.225 VO adj (max) (V) 1.225 Iz for regulation (min) (µA) 45 Reference voltage (V) Fixed Rating Catalog Temp coeff (max) (ppm/°C) 100 Operating temperature range (°C) -40 to 85 Iout/Iz (max) (mA) 25
SOT-23 (DBZ) 3 6.9204 mm² 2.92 x 2.37 SOT-SC70 (DCK) 5 4.2 mm² 2 x 2.1
  • 1.225V Fixed and adjustable outputs (1.225V to 10V)
  • Tight output tolerances and low temperature coefficient
    • Maximum 0.1%, 100ppm/°C – A grade
    • Maximum 0.2%, 100ppm/°C – B grade
    • Maximum 0.5%, 100ppm/°C – C grade
    • Maximum 1.0%, 150ppm/°C – D grade
  • Low output noise . . . 20µVRMS (typical)
  • Wide operating current range . . . 45µA (typical) to 12mA
  • Stable with all capacitive loads; no output capacitor required
  • Available in
    • Industrial temperature: –40°C to 85°C
    • Extended temperature: –40°C to 125°C
  • 1.225V Fixed and adjustable outputs (1.225V to 10V)
  • Tight output tolerances and low temperature coefficient
    • Maximum 0.1%, 100ppm/°C – A grade
    • Maximum 0.2%, 100ppm/°C – B grade
    • Maximum 0.5%, 100ppm/°C – C grade
    • Maximum 1.0%, 150ppm/°C – D grade
  • Low output noise . . . 20µVRMS (typical)
  • Wide operating current range . . . 45µA (typical) to 12mA
  • Stable with all capacitive loads; no output capacitor required
  • Available in
    • Industrial temperature: –40°C to 85°C
    • Extended temperature: –40°C to 125°C

The LM4041 series of shunt voltage references are versatile, easy-to-use references designed for a wide array of applications. These parts do not require external capacitors for operation and are stable with all capacitive loads. Additionally, the reference offers low dynamic impedance, low noise, and a low temperature coefficient to maintain a stable output voltage over a wide range of operating currents and temperatures. The LM4041 uses fuse and Zener-zap reverse breakdown voltage trim during wafer sort to offer four output voltage tolerances, ranging from 0.1% (maximum) for the A grade to 1% (maximum) for the D grade. Thus, a great deal of flexibility is offered to designers in choosing the best cost-to-performance ratio for applications. The LM4041 is available in a fixed (1.225V nominal) or an adjustable version (which requires an external resistor divider to set the output to a value between 1.225V and 10V).

Packaged in space-saving SC-70 and SOT-23-3 and requiring a minimum current of 45µA (typical), the LM4041 also designed for portable applications. The TO-92 package also is available for through-hole packaging needs. The LM4041xI is characterized for operation over an ambient temperature range of –40°C to 85°C. The LM4041xQ is characterized for operation over an ambient temperature range of –40°C to 125°C.

The LM4041 series of shunt voltage references are versatile, easy-to-use references designed for a wide array of applications. These parts do not require external capacitors for operation and are stable with all capacitive loads. Additionally, the reference offers low dynamic impedance, low noise, and a low temperature coefficient to maintain a stable output voltage over a wide range of operating currents and temperatures. The LM4041 uses fuse and Zener-zap reverse breakdown voltage trim during wafer sort to offer four output voltage tolerances, ranging from 0.1% (maximum) for the A grade to 1% (maximum) for the D grade. Thus, a great deal of flexibility is offered to designers in choosing the best cost-to-performance ratio for applications. The LM4041 is available in a fixed (1.225V nominal) or an adjustable version (which requires an external resistor divider to set the output to a value between 1.225V and 10V).

Packaged in space-saving SC-70 and SOT-23-3 and requiring a minimum current of 45µA (typical), the LM4041 also designed for portable applications. The TO-92 package also is available for through-hole packaging needs. The LM4041xI is characterized for operation over an ambient temperature range of –40°C to 85°C. The LM4041xQ is characterized for operation over an ambient temperature range of –40°C to 125°C.
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* Data sheet LM4041 Precision Micropower Shunt Voltage Reference datasheet (Rev. G) PDF | HTML 19 Jul 2024
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 28 Jun 2019
More literature SLL Precision Reference Product Clip 23 Feb 2006

Design & development

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Calculation tool

SHUNT-REFERENCE-CALC — Shunt Reference Selector and Design Calculator

This tool guides the user through the design process for the TLx431 and LM40x0 family of shunt voltage references. This calculator will recommend resistance and capacitance values to optimally meet the user's desired specifications.
Supported products & hardware

Supported products & hardware

Products
Shunt voltage references
ATL431 — 2.5-V low-IQ adjustable precision shunt regulator ATL431LI — Low-IQ programmable shunt regulator offered in an ultra-small DQN package ATL431LI-Q1 — Automotive, high-bandwidth, low-IQ programmable shunt regulator (pinout: KRA) ATL432 — 2.5-V precision programmable shunt regulator ATL432LI — High-bandwidth, low-IQ programmable shunt regulator (pinout: RKA) ATL432LI-Q1 — Automotive, high-bandwidth, low-IQ programmable shunt regulator (pinout: RKA) LM4030 — Ultra-high-precision shunt voltage reference LM4040 — Fixed voltage, 45-µA, precision micropower shunt voltage reference LM4040-N — 100-ppm/°C precision micropower shunt voltage reference LM4040-N-Q1 — Automotive, 100-ppm/°C precision micropower shunt voltage reference LM4040C25-EP — Enhanced Product 2.5-V Precision Micropower Shunt Voltage Reference, 0.5% accuracy LM4041-N — Fixed & adjustable, 45-µA, precision micropower shunt voltage reference LM4041-N-Q1 — Automotive, precision micropower shunt voltage reference LM4041A12 — 1.2-V precision micropower shunt voltage reference with 0.1% accuracy LM4041B — Adjustable, precision micropower shunt voltage reference with 0.2% accuracy LM4041B12 — 1.2-V precision micropower shunt voltage reference with 0.2% accuracy LM4041C — Adjustable, precision micropower shunt voltage reference with 0.5% accuracy LM4041C12 — 1.2-V precision micropower shunt voltage reference with 0.5% accuracy LM4041D — Adjustable, precision micropower shunt voltage reference with 1% accuracy LM4041D12 — 1.2-V precision micropower shunt voltage reference with 1% accuracy LM4050-N — 50-ppm/°C precision micropower shunt voltage reference LM4050-N-Q1 — Automotive, 50-ppm/°C precision micropower shunt voltage reference LM4050QML-SP — Radiation-hardened QMLV, 2.5-V or 5-V shunt voltage reference LM4051-N — Fixed & adjustable, precision micropower shunt voltage reference LMV431 — 1.5%, low-voltage (1.24-V) adjustable precision shunt regulator LMV431A — 1%, low-voltage (1.24-V) adjustable precision shunt regulator LMV431B — 0.5%, low-voltage (1.24-V) adjustable precision shunt regulator TL431 — Adjustable precision shunt regulator TL431-Q1 — Automotive adjustable precision shunt regulator (pin layout: KRA) TL431C — 2% adjustable precision shunt regulator TL431LI — Adjustable precision shunt regulator with optimized reference current (pin layout: KRA) TL431LI-Q1 — Automotive, adjustable, precision shunt regulator with optimized reference current TL432 — Adjustable precision shunt regulator (reverse pinout) TL432-Q1 — Automotive adjustable precision shunt regulator (pin layout: RKA) TL432LI — Adjustable precision shunt regulator with optimized reference current (pin layout: RKA) TL432LI-Q1 — Automotive, adjustable, precision shunt regulator with optimized reference current TLA431 — All-capacitor stable precision programmable reference with KRA pin layout TLA432 — All-capacitor stable precision programmable reference with RKA pin layout TLV431 — 1.5% accuracy, low-voltage, adjustable precision shunt regulator TLV431A — 1% accuracy, low-voltage, adjustable precision shunt regulator TLV431A-Q1 — Automotive, low-voltage adjustable precision shunt regulator TLV431B — 0.5% accuracy, low-voltage, adjustable precision shunt regulator TLV431B-Q1 — Automotive, low-voltage adjustable precision shunt regulator TLVH431 — 1.5% low-voltage wide-operating current adjustable precision shunt regulator TLVH431A — 1% low-voltage wide-operating current adjustable precision shunt regulator TLVH431A-Q1 — Automotive, low-voltage adjustable precision shunt regulator TLVH431B — 0.5% low-voltage wide-operating current adjustable precision shunt regulator TLVH431B-EP — Enhanced-plastic 0.5% low-voltage wide-operating-current adjustable precision shunt regulator TLVH431B-Q1 — Automotive, low-voltage adjustable precision shunt regulator (reverse pinout) TLVH432 — 1.5% low-voltage wide-operating current adjustable precision shunt regulator (reverse pinout) TLVH432A — 1% low-voltage wide-operating current adjustable precision shunt regulator (reverse pinout) TLVH432B — 0.5% low-voltage wide-operating current adjustable precision shunt regulator (reverse pinout)
General-purpose op amps
TLV4313 — Quad, 5.5-V, 1-MHz, low quiescent current (65-μA), RRIO operational amplifier TLV4314 — Quad, 5.5-V, 3-MHz, RRIO operational amplifier TLV4314-Q1 — Automotive-grade, quad, 5.5-V, 3-MHz, RRIO operational amplifier TLV4316 — Quad, 5.5-V, 10-MHz, RRIO operational amplifier TLV4316-Q1 — Automotive-grade, quad, 5.5-V, 10-MHz, RRIO operational amplifier TLV4379 — Quad, 5.5-V, 90-kHz, low quiescent current (4-μA), RRIO operational amplifier
Precision op amps (Vos<1mV)
TLV4333 — Quad, 350-kHz, low-noise, RRIO, CMOS operational amplifier for cost-sensitive systems TLV4376 — Quad 5.5-MHz, 100-µV offset, 8-nV/√Hz noise, 815-µA power, precision operational amplifiers TLV4387 — Quad, ultra-high-precision (10 μV) zero-drift (0.01 μV/°C) low-input-bias-current op amp
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Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
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The TIDA-00705 is an ultra-compact (1”x1”x1”) high efficiency bi-directional DC-DC power converter capable of delivering 480W for use in Local Energy Storage (LES) and Battery Back-up power applications, specifically designed for server PSUs embedded with battery backup units (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-01141 — Shunt-Based, <1% Accurate, ±100A, High-Side, Bi-directional Current Measurement Reference Design

This reference design is ±100-A shunt-based, high-side continuous bidirectional current measurement addressing applications such as battery current monitoring and current monitoring in UPS, telecom rectifiers and server PSUs. This design achieves high accuracy with low-shunt (...)
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Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
SOT-23 (DBZ) 3 Ultra Librarian
SOT-SC70 (DCK) 5 Ultra Librarian
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