規格
| 屬性 | 價值 |
| Package / Case | Tape & Reel (TR),Cut Tape (CT) |
| Part Status | Not For New Designs |
| Reference Type | Shunt |
| Output Type | Adjustable |
| Voltage - Output (Min/Fixed) | 1.233V |
| Voltage - Output (Max) | 10 V |
| Current - Output | 12 mA |
| Tolerance | ±1% |
| Temperature Coefficient | 150ppm/°C |
| Noise - 10 Hzto10k Hz | 20µVrms |
| Current - Cathode | 70 µA |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount |
概述
Description
LM4041DIM3X-ADJ is an adjustable, precision shunt voltage reference from TI (LM4041 family). It’s a tiny three‑terminal device that clamps its cathode voltage to a user‑set value via an external resistor divider on the ADJ pin.
Key points
- Adjustable shunt reference: Vout set with Rtop (between Vout and ADJ) and Rbottom (ADJ to ground).
- Vout typically around 1.24 V (Vref) and adjustable across a usable range with the divider; formula roughly Vout ≈ Vref × (1 + Rtop/Rbottom) (Iadj is small).
- Low dynamic impedance and good temperature stability; designed for micropower operation (a few µA to hundreds of µA can be used in the regulation range).
- Simple, robust usage: Anode to ground, Cathode to Vout/load, ADJ to resistor divider.
- Applications: precision references for ADCs/MCUs, instrumentation, calibration, battery-powered systems.
- Package: DIM3X variant in a compact SOT/SC70‑style package.
For exact Vout range, currents, and pinout, consult the TI LM4041DIM3X-ADJ datasheet.
Key points
- Adjustable shunt reference: Vout set with Rtop (between Vout and ADJ) and Rbottom (ADJ to ground).
- Vout typically around 1.24 V (Vref) and adjustable across a usable range with the divider; formula roughly Vout ≈ Vref × (1 + Rtop/Rbottom) (Iadj is small).
- Low dynamic impedance and good temperature stability; designed for micropower operation (a few µA to hundreds of µA can be used in the regulation range).
- Simple, robust usage: Anode to ground, Cathode to Vout/load, ADJ to resistor divider.
- Applications: precision references for ADCs/MCUs, instrumentation, calibration, battery-powered systems.
- Package: DIM3X variant in a compact SOT/SC70‑style package.
For exact Vout range, currents, and pinout, consult the TI LM4041DIM3X-ADJ datasheet.
Equivalent
Equivalent products (adjustable shunt voltage references) include:
- TL431 family (TL431, TLV431, TL431A) from TI, ST, Onsemi, etc.
- KA431 (ROHM) and NJM431 (New Japan Radio)
- Other 1.24–2.5 V shunt references with similar pinouts (verify voltage, tolerance, tempco and package for a direct swap).
- TL431 family (TL431, TLV431, TL431A) from TI, ST, Onsemi, etc.
- KA431 (ROHM) and NJM431 (New Japan Radio)
- Other 1.24–2.5 V shunt references with similar pinouts (verify voltage, tolerance, tempco and package for a direct swap).
Features
Here are the main features of the LM4041DIM3X-ADJ:
- Adjustable shunt voltage reference (settable with external resistor network)
- Micropower operation with low quiescent current
- Low dynamic impedance and low output noise
- Tight initial accuracy with good temperature performance
- Wide input supply range; suitable for battery-powered designs
- Built-in protection features (current limit/short-circuit tolerance)
- Simple, compact 3-pin DIM3X package (ADJ variant) for small layouts
Note: Specific voltage range and exact electrical specs vary by variant; refer to the datasheet for the precise Vout range and model limits.
- Adjustable shunt voltage reference (settable with external resistor network)
- Micropower operation with low quiescent current
- Low dynamic impedance and low output noise
- Tight initial accuracy with good temperature performance
- Wide input supply range; suitable for battery-powered designs
- Built-in protection features (current limit/short-circuit tolerance)
- Simple, compact 3-pin DIM3X package (ADJ variant) for small layouts
Note: Specific voltage range and exact electrical specs vary by variant; refer to the datasheet for the precise Vout range and model limits.
Pinout
- Pin count: 3 pins (three‑terminal device, typically in a SOT-23-3 package).
- Function: Adjustable precision shunt voltage reference/regulator. It clamps the voltage between its cathode and anode, with the ADJ pin used with external resistors to set the reference voltage for low-power applications.
- Function: Adjustable precision shunt voltage reference/regulator. It clamps the voltage between its cathode and anode, with the ADJ pin used with external resistors to set the reference voltage for low-power applications.
Manufacturer
Manufacturer: Texas Instruments (TI).
What kind of company: TI is an American multinational semiconductor company that designs and manufactures analog, mixed-signal, and embedded processing ICs and related products.
What kind of company: TI is an American multinational semiconductor company that designs and manufactures analog, mixed-signal, and embedded processing ICs and related products.
Application
LM4041DIM3X-ADJ is a precision, adjustable shunt voltage reference. Common application areas include:
- Precision voltage reference for ADCs/DACs, op-amps, and instrumentation front-ends
- Adjustable reference for DACs and voltage regulators
- LED dimming and backlight driver circuits requiring a stable reference
- Low-power, battery-powered portable electronics needing low drift and low noise
- Sensor bias/reference in analog signal paths and data converters
- General analog circuit references where a robust, configurable output is beneficial
- Precision voltage reference for ADCs/DACs, op-amps, and instrumentation front-ends
- Adjustable reference for DACs and voltage regulators
- LED dimming and backlight driver circuits requiring a stable reference
- Low-power, battery-powered portable electronics needing low drift and low noise
- Sensor bias/reference in analog signal paths and data converters
- General analog circuit references where a robust, configurable output is beneficial
Package
SOT-23-3 (SC-70-3) 3-pin surface-mount package.
