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Texas Instruments TLE2425MDR
- Part No.:
- TLE2425MDR
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLE2425MDR.pdf
- Description:
- IC VREF GND REF 0.8% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,846
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Product details
Overview
TLE2425MDR from Texas Instruments is a precision micropower virtual ground generator IC designed to establish a stable 2.5-V reference midpoint in single-supply 5-V analog systems. It integrates a precision voltage reference and low-noise op-amp in one SOIC-8 package, delivers ±20 mA output current, exhibits 7.5 mΩ typical output impedance, and maintains 12-bit regulation accuracy across −55°C to +125°C - enabling high-fidelity signal conditioning in data acquisition front ends.
For engineers reviewing the TLE2425MDR datasheet, TLE2425MDR pinout, TLE2425MDR application, or TLE2425MDR equivalent, key selection criteria include its 20 ppm/°C temperature coefficient, 170 µA quiescent current, ±20 mA sink/source capability, 80 dB ripple rejection at 120 Hz, and guaranteed operation over extended industrial temperature range - all critical for rail-splitting in ADC/DAC interfaces and isolated sensor signal chains.
Technical Context
The TLE2425MDR implements a monolithic precision voltage reference (2.5 V ±20 mV) buffered by a high-output-current operational amplifier with unity-gain stability into ≥100 pF loads. Its architecture eliminates external resistive dividers and discrete op-amps, reducing noise, drift, and board space while improving PSRR and load regulation.
Input regulation is specified at 1.5 µV/V (typ) over 4–40 V input range; output regulation is −45 µV (sink) and +15 µV (source) over ±10 mA load variation. The device achieves 100 µVrms wideband noise (10 Hz–10 kHz) and 0.01% settling in 180 µs after ±10 mA current steps - confirming suitability for 12+ bit data conversion systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.5 V ±20 mV (2.48–2.52 V typ at 25°C); enables precise rail-splitting for true bipolar operation from 5-V supply |
| Quiescent Current | 170 µA typ; supports micropower system design without compromising regulation performance |
| Output Impedance | 7.5 mΩ typ; ensures minimal voltage droop under dynamic load transients up to ±20 mA |
| Temperature Coefficient | 20 ppm/°C; guarantees ≤±0.5 mV drift over full −55°C to +125°C operating range |
| Ripple Rejection | 80 dB at 120 Hz; suppresses power supply noise in AC-coupled sensor and audio signal paths |
| Load Regulation | ±250 µV max over ±20 mA; meets 12-bit accuracy requirement (±1.22 mV at 5 V full scale) |
| Short-Circuit Current | ±30 mA min; provides robust fault tolerance without external current limiting |
Pinout & Package
Package: SOIC-8 (D package), 3.91 mm × 4.90 mm × 1.75 mm height, RoHS-compliant NIPDAU lead finish, MSL Level-1, tape-and-reel (2500 pcs/reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Regulated Output | 2.5-V virtual ground node; low-impedance source/sink for analog signal references and bias points |
| 2 (COMMON) | Reference Ground | Internal reference node; must be connected to system analog ground for accurate regulation |
| 3 (IN) | Power Input | Accepts 4–40 V DC input; supplies internal reference and output stage; no external decoupling required |
| 4–8 (NC) | No Internal Connection | Unbonded pins; electrically isolated; no PCB routing or grounding needed |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Reference + Op-Amp | Eliminates 4–6 discrete components (resistors, caps, ref, op-amp), reducing BOM count and layout area |
| 12-Bit Load/Input Regulation | Output drift < ±0.5 LSB over full load and input voltage range - critical for high-resolution DAQ systems |
| Stable into 100 pF Capacitive Loads | Enables direct connection to ADC input capacitors and long trace routing without phase-margin loss |
| Extended Temperature Range | −55°C to +125°C operation certified per TLE2425M suffix - suitable for automotive under-hood and industrial control |
| Macromodel Included | SPICE subcircuit provided for accurate simulation of transient response, noise, and stability behavior |
Applications
| Instrumentation Amplifier Biasing | Single-Supply ADC Reference |
|---|---|
Use Scenario: Biasing the common-mode input of an instrumentation amplifier in a 5-V sensor interface where true bipolar swing is required. IC Role / Device Role / Timing Role: Provides stable 2.5-V common-mode reference for INA input stage, replacing resistor divider + buffer. Use Value: Reduces offset drift by >5× vs. discrete solution; improves CMRR by eliminating mismatch-induced errors. |
Use Scenario: Generating mid-rail reference for SAR ADCs (e.g., ADS7822) powered from 5-V supply in portable data loggers. IC Role / Device Role / Timing Role: Supplies clean, low-impedance 2.5-V reference to ADC REF pin during sampling and conversion cycles. Use Value: Enables full 0–5 V input range utilization with <±0.5 LSB integral nonlinearity error over temperature. |
| Isolated Sensor Signal Conditioning | Industrial PLC Analog Input Module |
Use Scenario: Providing isolated 2.5-V bias for bridge sensor amplifiers in galvanically isolated current-loop transmitters. IC Role / Device Role / Timing Role: Serves as local virtual ground on secondary side of isolation barrier, referenced to isolated AGND. Use Value: Maintains 12-bit accuracy despite 1000 V isolation barrier; eliminates need for isolated reference ICs. |
Use Scenario: Rail-splitting for multi-channel 16-bit sigma-delta ADC front ends in DIN-rail mounted PLC I/O modules. IC Role / Device Role / Timing Role: Generates shared 2.5-V reference for eight simultaneous-input channels with low crosstalk. Use Value: Achieves <−90 dB channel-to-channel crosstalk via <10 mΩ output impedance and integrated buffering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar virtual ground generator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM336Z-2.5 | Two-terminal shunt reference only; requires external op-amp and bias resistor; no integrated output drive | Limited to low-current (<1 mA) reference use; unsuitable for direct ADC/DAC biasing or dynamic loads | Select when ultra-low cost and minimal quiescent current (<100 µA) outweigh need for integrated buffering |
| REF5025 | Precision series reference (2.5 V, 3 ppm/°C, 0.1 µVrms noise); requires external buffer for >1 mA loads | Higher accuracy but no built-in drive; needs additional op-amp, increasing board area and power | Select when sub-10 ppm/°C drift and <1 µVpp noise are mandatory, and system can accommodate discrete buffering |
Compared with LM336Z-2.5 and REF5025, the TLE2425MDR uniquely combines reference-grade accuracy, micropower operation, and ±20 mA output drive in a single SOIC-8 package - eliminating design trade-offs between precision, drive strength, and component count in 5-V analog systems.
Availability
TLE2425MDR is available at Aetrix Electronics and suitable for industrial automation, test equipment, and aerospace data acquisition systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLE2425MDR 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 digital signal technologies, with decades of heritage in precision analog ICs and industrial-grade reliability.
The TLE2425MDR belongs to TI's precision rail-splitting IC family, engineered specifically to replace discrete virtual ground solutions in high-accuracy, single-supply analog signal chains - targeting 12+ bit data acquisition, sensor interfacing, and industrial control applications.
FAQ
What is the operating temperature range for the TLE2425MDR?
The TLE2425MDR is rated for −55°C to +125°C operation, confirmed by its "M" temperature suffix and electrical characterization across this full range in the official TI datasheet SLOS065D. This makes it suitable for under-hood automotive, downhole oilfield, and industrial control environments where ambient extremes are common. All key parameters - including output voltage, load regulation, and bias current - are specified over this extended range.
Can the TLE2425MDR drive a 100-pF capacitive load without oscillation?
Yes, the TLE2425MDR is explicitly characterized for stability into ≥100 pF loads, with typical output voltage response showing 0.01% settling in 180 µs under ±10 mA step conditions with CL = 100 pF. Figure 16 in the datasheet confirms stable operation up to at least 100 pF, and the internal compensation eliminates need for external isolation resistors - simplifying layout for ADC reference and op-amp bias applications.
How does the TLE2425MDR achieve 12-bit regulation accuracy?
The TLE2425MDR achieves 12-bit (±0.5 LSB at 5 V FS) regulation through combined input regulation of 1.5 µV/V and load regulation of ±250 µV over ±20 mA - both measured across −55°C to +125°C. With 5 V full-scale, 12-bit LSB = 1.22 mV; ±250 µV drift is just 0.2 LSB. Its 20 ppm/°C tempco contributes <±0.5 mV over the full range, preserving system-level linearity.
Is the TLE2425MDR pin-compatible with other TLE2425 variants like TLE2425CDR?
Yes, all TLE2425 variants - including TLE2425CDR, TLE2425IDR, and TLE2425MDR - share identical SOIC-8 (D) package pinout, footprint, and terminal functions (Pins 1–3 active, Pins 4–8 NC). The only differences are temperature grade (C: 0–70°C, I: −40–85°C, M: −55–125°C) and associated parameter limits - allowing drop-in replacement where extended temperature performance is required.
Does the TLE2425MDR require external capacitors for stability or noise reduction?
No external capacitors are required for basic operation or stability. The TLE2425MDR is internally compensated and stable into ≥100 pF loads. However, a 0.1 µF ceramic capacitor placed close to the IN pin is recommended for high-frequency PSRR improvement, and a 10 nF capacitor at the OUT pin may further reduce broadband noise in sensitive measurement circuits - both optional enhancements, not functional prerequisites.
TLE2425MDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Reference Type:
- Ground Reference (Virtual)
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 20 mA
- Tolerance:
- ±0.8%
- Temperature Coefficient:
- 20ppm/°C Typical
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 100µVrms
- Voltage - Input:
- 4V ~ 40V
- Current - Supply:
- -
- Current - Cathode:
- -
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TLE2425MDR FAQ
1.How can I place an order for TLE2425MDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE2425MDR 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 TLE2425MDR reliable?
The price and inventory of TLE2425MDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE2425MDR is usually 5 days.
3.What payment methods are accepted for TLE2425MDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE2425MDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE2425MDR?
TLE2425MDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE2425MDR 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 TLE2425MDR?
For technical support, including TLE2425MDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE2425MDR requirements.
6.How does Aetrix verify that TLE2425MDR is sourced from the original manufacturer or authorized distributors?
All TLE2425MDR 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 TLE2425MDR meets industry standards.
7.What is the process for return or replacement of TLE2425MDR?
All TLE2425MDR units undergo pre-shipment inspection (PSI). If there is an issue with TLE2425MDR, 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 TLE2425MDR part is unused and in its original packaging.
Return procedure for TLE2425MDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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