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Texas Instruments LM4040BIM7-2.0/NOPB
- Part No.:
- LM4040BIM7-2.0/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LM4040BIM7-2.0/NOPB.pdf
- Description:
- IC VREF SHUNT 0.2% SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,975
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Product details
Overview
LM4040BIM7-2.0/NOPB from Texas Instruments is a precision micropower shunt voltage reference in SC70-3 package, delivering a fixed 2.048 V reverse breakdown voltage with ±0.2% initial tolerance (Grade B), 100 ppm/°C max temperature coefficient, and 35 μVrms wideband noise (10 Hz–10 kHz). It operates from 60 μA to 15 mA over −40°C to +85°C and requires no output capacitor-ideal for space-constrained analog input modules and field transmitters.
For engineers reviewing the LM4040BIM7-2.0/NOPB datasheet, LM4040BIM7-2.0/NOPB pinout, LM4040BIM7-2.0/NOPB application, or LM4040BIM7-2.0/NOPB equivalent, key selection criteria include its SC70-3 footprint, shunt topology, low quiescent current stability, and automotive-grade AEC-Q100 qualification (Grade 3).
Technical Context
The LM4040BIM7-2.0/NOPB uses Zener-zap trimming at wafer sort to achieve ±0.2% initial accuracy at 25°C and incorporates bandgap-derived curvature correction for stable voltage vs. temperature. Its dynamic impedance remains ≤0.8 Ω at 1 mA, enabling tight regulation under varying load currents.
Unlike series references, it functions as a two-terminal shunt device-cathode supplies regulated voltage while anode connects to system ground-and tolerates any capacitive load without oscillation, eliminating external stabilization components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.048 V nominal reverse breakdown voltage-matches common 12-bit DAC/ADC full-scale scaling (e.g., 2.048 V = 1 LSB × 4096). |
| Initial Tolerance | ±0.2% at 25°C (Grade B)-translates to ±4.1 mV absolute error, suitable for 10-bit system accuracy without calibration. |
| Temp Coefficient | ≤100 ppm/°C over −40°C to +85°C-adds ≤16.4 mV drift across full range, critical for industrial sensor front-ends. |
| Operating Current | 60 μA to 15 mA-enables ultra-low-power operation (e.g., battery-powered transmitters) and robust drive capability for ADC reference buffers. |
| Noise (10 Hz–10 kHz) | 35 μVrms-supports 16-bit effective resolution in precision data acquisition when paired with low-noise amplifiers. |
| Dynamic Impedance | ≤0.8 Ω at 1 mA-minimizes load-induced voltage shift (<0.8 mV per 1 mA load change), essential for stable SAR ADC references. |
Pinout & Package
LM4040BIM7-2.0/NOPB is housed in a 3-pin SC70 (DCK) package (2.00 mm × 1.25 mm), optimized for high-density PCB layouts. Pin 1 is Anode (ground), Pin 3 is Cathode (output), and Pin 2 is NC (no connect, must float or tie to anode per EMI guidance).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Ground reference node | Must be connected to system ground; serves as return path for shunt current and defines 0 V reference for cathode output. |
| Cathode (Pin 3) | Regulated output terminal | Delivers stable 2.048 V when reverse-biased; sinks all load + reference current-requires series resistor from supply rail. |
| NC (Pin 2) | Unused terminal | Not internally connected; TI recommends floating or tying to anode in high-EMI environments to reduce noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitor required | Internal compensation enables unconditional stability with any capacitive load-reduces BOM count and layout area in compact modules. |
| Wide operating current range | 60 μA minimum ensures functionality in nanoamp-sleep systems; 15 mA max supports driving multiple ADC references or op-amp buffers. |
| AEC-Q100 Grade 3 qualified | Validated for −40°C to +85°C automotive applications-meets reliability and stress-test requirements for body electronics and infotainment power rails. |
| Low thermal hysteresis | 0.08% voltage shift after −40°C ↔ +125°C cycling-preserves calibration integrity in field-deployed energy infrastructure meters. |
Applications
| Field Transmitters | Energy Infrastructure Meters |
|---|---|
Use Scenario: 4–20 mA loop-powered sensor transmitter conditioning analog signals from pressure/temperature sensors before current conversion. IC Role / Device Role / Timing Role: Shunt reference providing precise 2.048 V excitation and ADC reference for sigma-delta converter. Use Value: Enables <12-bit linearity without calibration due to ±0.2% tolerance and low tempco-reducing factory trim steps and field drift. | Use Scenario: Polyphase electricity meter measuring voltage/current waveforms with isolation and high-accuracy sampling. IC Role / Device Role / Timing Role: Primary reference for 24-bit delta-sigma ADCs monitoring grid voltage and current channels. Use Value: 35 μVrms noise and ≤0.8 Ω dynamic impedance maintain >110 dB SNR in metrology-grade sampling circuits. |
| Analog Input Modules | Automotive Body Control Units |
Use Scenario: Industrial PLC I/O module digitizing 0–10 V or ±10 V sensor inputs across 16+ channels. IC Role / Device Role / Timing Role: Per-channel reference for multiplexed SAR ADCs ensuring channel-to-channel gain matching. Use Value: SC70-3 footprint allows dense placement near each ADC; no capacitor requirement simplifies layout and reduces layer count. | Use Scenario: HVAC control, lighting dimming, and window lift modules requiring accurate voltage monitoring of 12 V battery rail. IC Role / Device Role / Timing Role: Reference for microcontroller ADC measuring battery voltage, temperature, and motor feedback. Use Value: AEC-Q100 Grade 3 qualification ensures operation across automotive temperature extremes without derating or guard-banding. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM4040CIM7-2.0/NOPB | ±0.5% initial tolerance (Grade C), same SC70-3 package and 2.048 V output | Lower accuracy acceptable in cost-sensitive consumer or non-critical industrial sensing | Select when ±0.5% tolerance meets system error budget and BOM cost reduction is prioritized over calibration headroom. |
| REF3020AIDBZR | 2.048 V series reference, SOT-23-3, ±0.2% tolerance, but requires 50 μA min supply current and external bypass cap | Used where low-dropout series topology avoids shunt current dissipation in high-voltage rails | Choose for supply voltages >15 V where shunt power loss becomes excessive, accepting added capacitor and layout complexity. |
Compared with LM4040CIM7-2.0/NOPB, the LM4040BIM7-2.0/NOPB offers tighter initial accuracy for calibrated systems; versus REF3020AIDBZR, it eliminates external capacitance and simplifies biasing but demands careful series resistor sizing to manage shunt dissipation.
Availability
LM4040BIM7-2.0/NOPB is available at Aetrix Electronics and suitable for field transmitters, energy infrastructure meters, and analog input modules requiring stable component supply across industrial and automotive temperature ranges.
Supply support for LM4040BIM7-2.0/NOPB includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies, with decades of expertise in precision reference design.
The LM4040-N product line delivers micropower shunt voltage references for space-constrained, low-drift applications-including industrial automation, automotive subsystems, and portable instrumentation-where simplicity, stability, and qualification matter.
FAQ
What is the maximum operating temperature range for LM4040BIM7-2.0/NOPB?
The LM4040BIM7-2.0/NOPB is rated for −40°C to +85°C (Industrial Grade, AEC-Q100 Grade 3). It is not specified for extended −40°C to +125°C operation-only variants with "-Q1" suffix or "E" temperature grade meet that range. Always verify ambient and junction temperature limits using the 241 mW SC70 power rating and RθJA = 267°C/W.
Does LM4040BIM7-2.0/NOPB require an external capacitor for stability?
No, the LM4040BIM7-2.0/NOPB does not require an external capacitor. Its internal design ensures unconditional stability with any capacitive load, including direct connection to ADC reference inputs or op-amp buffers. This eliminates board space and BOM cost associated with stabilization caps-confirmed in TI's datasheet Section 3 and Figure 8-1.
What is the minimum cathode current needed for LM4040BIM7-2.0/NOPB to regulate accurately?
The LM4040BIM7-2.0/NOPB requires a minimum cathode current of 60 μA at 25°C to maintain regulation within specification. At full temperature range (−40°C to +85°C), the minimum increases to 65 μA. Below this, output voltage deviates significantly-designers must size the series resistor to ensure worst-case current exceeds this threshold under lowest supply voltage.
How does the NC pin (Pin 2) on LM4040BIM7-2.0/NOPB affect performance?
Pin 2 is a no-connect terminal in the SC70 package. TI specifies it must be left floating or tied to the anode (Pin 1). In high-EMI environments-such as near switching power supplies or motors-connecting Pin 2 to anode reduces noise coupling into the reference node, improving long-term stability and measurement repeatability of the LM4040BIM7-2.0/NOPB.
Is LM4040BIM7-2.0/NOPB pin-compatible with other LM4040 variants in SC70 package?
Yes, all LM4040-xM7 variants (e.g., LM4040AIM7-2.5, LM4040CIM7-4.096) share identical SC70-3 pinout: Pin 1 = Anode, Pin 2 = NC, Pin 3 = Cathode. This allows drop-in replacement across voltage and tolerance grades without layout changes-provided thermal and current limits remain within spec for the LM4040BIM7-2.0/NOPB.
LM4040BIM7-2.0/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Reference Type:
- Shunt
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 2.048V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±0.2%
- Temperature Coefficient:
- 100ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 35µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 65 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
LM4040BIM7-2.0/NOPB FAQ
1.How can I place an order for LM4040BIM7-2.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4040BIM7-2.0/NOPB on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LM4040BIM7-2.0/NOPB reliable?
The price and inventory of LM4040BIM7-2.0/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4040BIM7-2.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM4040BIM7-2.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4040BIM7-2.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4040BIM7-2.0/NOPB?
LM4040BIM7-2.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4040BIM7-2.0/NOPB order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LM4040BIM7-2.0/NOPB?
For technical support, including LM4040BIM7-2.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4040BIM7-2.0/NOPB requirements.
6.How does Aetrix verify that LM4040BIM7-2.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4040BIM7-2.0/NOPB products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LM4040BIM7-2.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM4040BIM7-2.0/NOPB?
All LM4040BIM7-2.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4040BIM7-2.0/NOPB, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LM4040BIM7-2.0/NOPB part is unused and in its original packaging.
Return procedure for LM4040BIM7-2.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM4040BIM7-2.0/NOPB Tags
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