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Texas Instruments LMP2012MAX
- Part No.:
- LMP2012MAX
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMP2012MAX.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,450
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Product details
Overview
LMP2012MAX from Texas Instruments is a dual high-precision rail-to-rail output operational amplifier designed for low-drift, low-noise signal conditioning in precision analog front-ends. It delivers 60 µV max input offset voltage over temperature, 35 nV/√Hz input-referred voltage noise (no 1/f component), and 130 dB CMRR - enabling accurate amplification of microvolt-level sensor signals such as thermocouples and strain gauges in industrial instrumentation.
For engineers reviewing the LMP2012MAX datasheet, LMP2012MAX pinout, LMP2012MAX application, or LMP2012MAX equivalent, key selection criteria include guaranteed VOS stability over −40°C to +125°C, absence of external compensation capacitors, ultra-low input bias current (−3 pA typical), and compatibility with 2.7–5.25 V single-supply operation in space-constrained PCB layouts.
Technical Context
The LMP2012MAX employs patented auto-zero architecture that continuously measures and corrects input offset voltage without chopper-induced mixing artifacts, achieving DC accuracy comparable to chopper-stabilized amplifiers while eliminating 1/f noise and minimizing distortion. Its input stage uses a copper leadframe to suppress thermocouple-induced offset drift from PCB thermal gradients.
This dual-channel op amp operates with rail-to-rail output swing (within 30 mV of rails at 5 V), supports stable unity-gain configuration without external compensation, and features fast overload recovery (50 ms typical) - making it suitable for driving ADC inputs and multiplexer-switched sensor arrays where transient immunity and settling integrity are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage (max) | 60 µV over −40°C to +125°C - ensures <±0.01% gain error in 100× gain instrumentation amplifier configurations |
| Input-Referred Voltage Noise | 35 nV/√Hz flat spectrum - eliminates low-frequency measurement drift in DC-coupled sensor interfaces |
| CMRR | 130 dB (typical) - rejects common-mode interference from noisy industrial power supplies or long sensor cables |
| Gain-Bandwidth Product | 3 MHz - supports stable closed-loop gain ≥10 up to ~300 kHz for anti-aliasing filter buffering |
| Slew Rate | 4 V/µs - enables clean 10 Vpp output at 100 kHz without slew-induced distortion |
| Supply Current per Channel | 0.93 mA at 5 V - allows dual-channel precision amplification in battery-powered portable instruments |
| Rail-to-Rail Output Swing | Within 30 mV of supply rails at 5 V - maximizes dynamic range when interfacing with 12-bit+ SAR ADCs |
Pinout & Package
VSSOP-8 (DGK) package: 3.00 mm × 3.00 mm body, 0.65 mm pitch, exposed thermal pad (not electrically connected). Compatible with standard 8-pin SOIC footprints using adapter layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplified output of channel A - drives ADC input or next-stage filter with rail-to-rail capability |
| 2 | –IN A | Inverting input of channel A - connects to feedback network in inverting amplifier or transimpedance config |
| 3 | +IN A | Non-inverting input of channel A - accepts low-impedance sensor reference or buffered signal source |
| 4 | V– | Negative supply rail - must be tied to ground in single-supply operation; decoupling capacitor required |
| 5 | +IN B | Non-inverting input of channel B - isolated from channel A for differential pair or dual-sensor conditioning |
| 6 | –IN B | Inverting input of channel B - enables independent gain setting per channel without crosstalk |
| 7 | OUT B | Amplified output of channel B - supports simultaneous dual-channel acquisition without interleaving delay |
| 8 | V+ | Positive supply rail - accepts 2.7–5.25 V; internal regulation ensures consistent offset performance across range |
Key Features
| Feature | Design Value |
|---|---|
| No 1/f noise | Flat 35 nV/√Hz voltage noise down to 0.1 Hz - eliminates integration-time-dependent drift in precision weigh scales |
| Auto-zero architecture | Continuous offset correction at ~30 kHz - achieves 0.015 µV/°C TCVOS without chopper mixing artifacts |
| Copper leadframe | Eliminates thermocouple EMF between IC leads and copper PCB traces - reduces thermal drift by >90% vs Kovar packages |
| No external capacitors | Internally compensated for unity-gain stability - removes dielectric absorption errors and board-space overhead |
| Rail-to-rail output | 30 mV min headroom at 5 V - preserves full 4.97 V output swing for maximum ADC utilization in 5 V systems |
Applications
| Thermocouple Amplifier | Strain Gauge Bridge Amplifier |
|---|---|
|
Use Scenario: Amplifying µV-level Seebeck voltage from Type-K thermocouples across −40°C to +125°C ambient range in HVAC controllers. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier with 1000× gain, rejecting common-mode noise from 50/60 Hz mains coupling. Use Value: 60 µV max VOS ensures <0.1°C absolute temperature error without calibration; no 1/f noise prevents drift during slow ramp tests. |
Use Scenario: Conditioning mV-level differential output from 350 Ω Wheatstone bridge in load-cell-based industrial scales. IC Role / Device Role / Timing Role: Dual-channel difference amplifier with matched gain paths for ratiometric bridge excitation and output scaling. Use Value: 130 dB CMRR rejects bridge-excitation ripple; copper leadframe eliminates thermal EMF errors from PCB self-heating. |
| Precision ADC Driver | Low-Power Sensor Signal Chain |
|
Use Scenario: Driving 16-bit SAR ADC inputs in portable gas analyzers requiring <1 LSB INL error over temperature. IC Role / Device Role / Timing Role: Buffer and level-shifter between sensor front-end and ADC sample-and-hold input. Use Value: Rail-to-rail output swing maximizes SNR; 4 V/µs slew rate settles 10 V step within 2.5 µs - meets 1 MSPS sampling timing. |
Use Scenario: Signal conditioning for battery-powered environmental sensors (humidity, pressure) operating on 3.3 V coin cells. IC Role / Device Role / Timing Role: Dual-channel amplifier powering two independent sensor outputs with shared supply and reference. Use Value: 0.93 mA per channel enables >1-year runtime on 200 mAh cell; auto-zero maintains calibration over shelf life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-precision dual op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2189IDR | Zero-drift architecture with 5.2 µV max VOS, 5.2 MHz GBW, but requires external 100 pF compensation capacitor for stability | Better bandwidth and lower VOS, but higher supply current (1.3 mA/ch) and added BOM/component count | Preferred when >3 MHz bandwidth is needed and layout allows compensation capacitor placement |
| AD8629ARZ | Chopper-stabilized dual op-amp with 1 µV max VOS, but exhibits 1/f noise corner at 10 Hz and chopper ripple at 100 kHz | Lower initial offset, but introduces switching artifacts in sensitive audio or RF-adjacent circuits | Selected only when ultra-low initial VOS dominates over noise spectral purity and EMI robustness |
Compared with OPA2189IDR and AD8629ARZ, the LMP2012MAX provides superior low-frequency noise immunity and simpler layout (no external caps), making it optimal for DC-coupled industrial sensing where long-term stability outweighs peak bandwidth.
Availability
LMP2012MAX is available at Aetrix Electronics and suitable for precision instrumentation, industrial process control, and portable medical devices requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for LMP2012MAX 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 delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The LMP2012MAX belongs to TI's LMP™ precision amplifier family, engineered specifically for ultra-stable DC performance in harsh environments - targeting applications where offset drift, thermal EMF, and 1/f noise directly impact measurement validity.
FAQ
What is the maximum operating temperature range for the LMP2012MAX?
The LMP2012MAX is specified for continuous operation from −40°C to +125°C ambient temperature. All key DC parameters - including input offset voltage (60 µV max), CMRR (90 dB min), and PSRR (90 dB min) - are ensured across this full range per TI's production test methodology using statistical quality control correlation.
Does the LMP2012MAX require external compensation capacitors?
No, the LMP2012MAX is internally compensated for unity-gain stability and does not require external capacitors. This eliminates dielectric absorption errors and PCB layout sensitivity associated with external compensation networks - a key advantage over alternatives like the OPA2189IDR which mandates a 100 pF capacitor.
How does the LMP2012MAX achieve low 1/f noise?
The LMP2012MAX uses patented auto-zero techniques - not chopper stabilization - to continuously measure and correct input offset voltage. This architecture avoids the mixing products and 1/f noise inherent in chopper-based designs, delivering flat 35 nV/√Hz voltage noise from 0.1 Hz to 10 kHz as verified in TI's SNOSA71L datasheet Figure 5.
What is the typical supply current per channel for the LMP2012MAX at 5 V?
The LMP2012MAX draws 0.930 mA per channel typical at V+ = 5 V and TJ = 25°C, with a maximum of 1.50 mA per channel across temperature. This enables dual-channel precision amplification in battery-powered equipment where average current budget is constrained to <2 mA.
Is the LMP2012MAX pin-compatible with standard SOIC-8 op-amps?
The LMP2012MAX is offered in VSSOP-8 (DGK) package, not SOIC-8. While both are 8-pin surface-mount packages, VSSOP-8 has 3.00 mm × 3.00 mm body size and 0.65 mm pitch versus SOIC-8's 4.90 mm × 3.91 mm and 1.27 mm pitch - requiring dedicated footprint. TI also offers LMP2012MA (SOIC-8 variant), but LMP2012MAX is VSSOP-only.
LMP2012MAX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMP®
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 4V/µs
- Gain Bandwidth Product:
- 3 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 3 pA
- Voltage - Input Offset:
- 0.12 µV
- Current - Supply:
- 930µA
- Current - Output / Channel:
- 17 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.25 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
LMP2012MAX FAQ
1.How can I place an order for LMP2012MAX through Aetrix?
Please submit a Request for Quotation (RFQ) for LMP2012MAX 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 LMP2012MAX reliable?
The price and inventory of LMP2012MAX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMP2012MAX is usually 5 days.
3.What payment methods are accepted for LMP2012MAX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMP2012MAX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMP2012MAX?
LMP2012MAX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMP2012MAX 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 LMP2012MAX?
For technical support, including LMP2012MAX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMP2012MAX requirements.
6.How does Aetrix verify that LMP2012MAX is sourced from the original manufacturer or authorized distributors?
All LMP2012MAX 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 LMP2012MAX meets industry standards.
7.What is the process for return or replacement of LMP2012MAX?
All LMP2012MAX units undergo pre-shipment inspection (PSI). If there is an issue with LMP2012MAX, 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 LMP2012MAX part is unused and in its original packaging.
Return procedure for LMP2012MAX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMP2012MAX Tags
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