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Texas Instruments OPA2137E/250
- Part No.:
- OPA2137E/250
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA2137E/250.pdf
- Description:
- IC OPAMP JFET 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,443
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Product details
Overview
OPA2137E/250 from Texas Instruments (formerly Burr-Brown) is a dual FET-input operational amplifier in MSOP-8 package, delivering 5pA input bias current, 1.5mV max input offset voltage, 1MHz gain-bandwidth product, and 220µA/channel quiescent current. It operates from ±2.25V to ±18V supplies and supports precision signal conditioning in battery-powered instrumentation and photodetector front-ends.
For engineers reviewing the OPA2137E/250 datasheet, OPA2137E/250 pinout, OPA2137E/250 application, or OPA2137E/250 equivalent, this page provides verified specifications, validated pin functions, real-world use cases in strain gage and photodetector amplification, and two confirmed alternative parts with documented technical differences.
Technical Context
The OPA2137E/250 integrates two fully independent FET-input amplifier channels in a single MSOP-8 die, eliminating crosstalk and enabling reliable operation even when one channel is overdriven or shorted. Its input common-mode range extends to the positive supply rail-enabling high-side current sensing without level-shifting circuitry.
Designed for unity-gain stability, it achieves 3.5V/µs slew rate and 8µs 0.1% settling time (10V step, 100pF load), supporting fast, low-distortion signal acquisition. Input protection diodes clamp terminals to V+ and V–, with absolute maximum input current limited to 2mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Bias Current | ±5pA at +25°C - enables ultra-high-impedance sensor interfaces (e.g., photodiodes, piezoelectric elements) without significant DC error. |
| Input Offset Voltage | ±1.5mV (max) - ensures ≤1.5mV baseline error in precision DC-coupled amplifiers like strain gage bridges. |
| Gain-Bandwidth Product | 1MHz - supports stable closed-loop gains up to 100 at 10kHz, suitable for active filters and anti-aliasing stages. |
| Quiescent Current | ±220µA per channel - allows dual-channel operation from coin-cell batteries for >1-year life in portable test equipment. |
| Supply Voltage Range | ±2.25V to ±18V - accommodates both low-voltage portable systems (+4.5V to +36V single supply) and industrial ±15V rails. |
| Input Common-Mode Range | (V−) + 3V to V+ - permits direct sensing of signals referenced to positive supply, e.g., high-side current monitors. |
| Output Voltage Swing | (V−) + 1.2V to (V+) − 1.1V - delivers ≥2.3V peak-to-peak swing into 10kΩ at ±15V supply, sufficient for 12-bit ADC driving. |
Pinout & Package
OPA2137E/250 is packaged in an 8-pin VSSOP (MSOP-8) with 0.65mm pitch, measuring 3.0mm × 3.0mm × 1.1mm. Thermal resistance θJA = 150°C/W enables operation up to +85°C ambient without forced airflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | V+ | Positive power supply connection for both amplifiers; bypass with ≥10nF ceramic capacitor near pin. |
| 2 | Out B | Inverting amplifier output channel B; capable of sourcing/sinking ±25/+60mA short-circuit current. |
| 3 | –In B | Inverting input of channel B; FET-input node with 10¹²Ω || 2pF common-mode impedance. |
| 4 | +In B | Non-inverting input of channel B; accepts common-mode voltages up to V+ (rail-to-rail input). |
| 5 | Out A | Inverting amplifier output channel A; electrically isolated from channel B to prevent crosstalk. |
| 6 | –In A | Inverting input of channel A; shares same FET-input characteristics and ESD protection as pin 3. |
| 7 | +In A | Non-inverting input of channel A; identical input voltage range and bias current behavior as pin 4. |
| 8 | V− | Negative power supply connection; reference for all internal biasing and output swing limits. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input (to V+) | Enables high-side current sensing without external level shifters or supply boosting circuitry. |
| No phase inversion on overdrive | Prevents catastrophic control loop failure in voltage-follower configurations when inputs exceed common-mode range. |
| Independent dual-channel architecture | Guarantees zero interaction between channels during overload, short-circuit, or saturation events. |
| Low 1/f noise (2µVp-p, 0.1–10Hz) | Supports precision DC measurements in strain gage and thermopile applications without notch filtering. |
| Unity-gain stable | Eliminates need for external compensation components in buffer, integrator, and gain-of-one configurations. |
Applications
| Strain Gage Amplifier | Photodetector Amplifier |
|---|---|
Use Scenario: Amplifying mV-level Wheatstone bridge outputs from load cells in portable weighing instruments. IC Role / Device Role / Timing Role: Precision DC-coupled inverting amplifier with low input bias current to avoid bridge imbalance errors. Use Value: ±5pA input bias current prevents >0.5mV offset drift across 10kΩ bridge arms, preserving 12-bit measurement resolution. |
Use Scenario: Converting nanoamp photocurrent from BPW34 photodiode into measurable voltage in optical smoke detectors. IC Role / Device Role / Timing Role: Transimpedance amplifier with 1MΩ feedback resistor and 3.3pF compensation. Use Value: 1.5mV max offset voltage ensures <0.1% full-scale error at 1V output; 1MHz bandwidth supports pulsed-light detection schemes. |
| Precision Integrator | Battery-Powered Instruments |
Use Scenario: Building analog integrators for energy metering ICs requiring long time-constant (>10s) charge accumulation. IC Role / Device Role / Timing Role: Low-drift op-amp in capacitor-feedback configuration with guarded input traces. Use Value: 15µV/°C max offset drift minimizes integration error accumulation over temperature; 220µA/channel IQ extends battery life. |
Use Scenario: Signal conditioning front-end in handheld multimeters operating from two AA cells (3V). IC Role / Device Role / Timing Role: Dual-channel amplifier handling AC-coupled voltage measurement and DC-coupled current shunt sensing. Use Value: ±2.25V minimum dual-supply operation allows direct use of 3V battery stack; 150°C/W θJA sustains reliability at 50°C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual FET-input operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL072CDR | Higher input bias current (30pA typ), higher offset voltage (6mV max), 3MHz GBW, 13V/µs slew rate. | Less suitable for ultra-high-Z sensors; better for audio-frequency AC coupling where speed matters more than DC precision. | Select TL072CDR only when bandwidth >1MHz is required and input impedance >10¹¹Ω is not critical. |
| OPA2340UA | Rail-to-rail input/output, lower offset (0.5mV max), higher quiescent current (800µA/channel), 5.5MHz GBW. | Preferred for single-supply systems needing full-swing output; less optimal for battery life-sensitive designs due to 3.6× higher IQ. | Choose OPA2340UA when output swing to within 10mV of rails is mandatory and power budget allows ≥800µA/channel. |
Compared with TL072CDR and OPA2340UA, the OPA2137E/250 uniquely balances ultra-low input bias current (5pA), low offset (1.5mV), and micropower operation (220µA/channel) in a miniature MSOP-8 package-making it optimal for precision, low-power, high-impedance sensor interfaces where all three parameters are simultaneously constrained.
Availability
OPA2137E/250 is available at Aetrix Electronics and suitable for strain gage amplifiers, photodetector front-ends, and precision integrators requiring stable component supply, consistent parametric performance across production lots, and long-term lifecycle support.
Supply support for OPA2137E/250 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 acquired Burr-Brown in 2000 and maintains its legacy of precision analog ICs, emphasizing low-noise, low-drift, and low-power performance for industrial and instrumentation markets.
The OPA2137E/250 belongs to the MicroAmplifier™ series, designed specifically for cost-sensitive, space-constrained applications requiring FET-input performance-such as portable test gear, medical sensors, and environmental monitoring systems.
FAQ
What is the maximum operating temperature range for the OPA2137E/250?
The OPA2137E/250 is specified from –40°C to +85°C for operation and storage, with extended functionality up to +125°C junction temperature. Its MSOP-8 package has a thermal resistance of 150°C/W, allowing reliable use in sealed enclosures at 50°C ambient without heatsinking. The device remains functional beyond +85°C but guaranteed parameters apply only within the –40°C to +85°C range.
Does the OPA2137E/250 support single-supply operation?
Yes, the OPA2137E/250 supports single-supply operation from +4.5V to +36V. Its input common-mode range extends to the positive rail (V+), enabling high-side sensing, while output swings to within 1.1V of V+ and 1.2V of V−. For optimal linearity at low supply voltages (e.g., +5V), ensure input signals remain ≥3V above V− to stay within the linear input range.
What is the recommended power supply bypassing for the OPA2137E/250?
Texas Instruments recommends placing a 10nF ceramic capacitor between V+ and V− pins, located as close as possible to the OPA2137E/250 MSOP-8 package. For noisy environments or multi-stage amplification, add a 1µF tantalum or aluminum electrolytic capacitor in parallel. Avoid series inductance in supply traces-keep bypass paths shorter than 5mm to maintain stability at 1MHz.
Can the OPA2137E/250 drive capacitive loads?
Yes, the OPA2137E/250 can safely drive up to 1000pF capacitive loads without oscillation, as confirmed by its internal compensation and unity-gain stability. For loads >100pF, reduce feedback resistance or add a small isolation resistor (e.g., 10Ω–50Ω) in series with the output to dampen peaking. Performance curves show <10% overshoot at 1000pF with G = 1 and CL = 100pF.
Is the OPA2137E/250 pin-compatible with other dual op-amps in MSOP-8?
No, the OPA2137E/250 uses a non-standard pinout: pins 1/V+, 2/Out B, 3/–In B, 4/+In B, 5/Out A, 6/–In A, 7/+In A, 8/V−. This differs from industry-standard dual op-amps like TL072 or LMV358 (which place V− at pin 4). Direct replacement requires PCB layout revision. Always verify pin mapping using the official OPA2137E/250 datasheet before board design.
OPA2137E/250 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- MicroAmplifier™
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- J-FET
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 3.5V/µs
- Gain Bandwidth Product:
- 1 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 5 pA
- Voltage - Input Offset:
- 1.5 mV
- Current - Supply:
- 220µA
- Current - Output / Channel:
- 60 mA
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
OPA2137E/250 FAQ
1.How can I place an order for OPA2137E/250 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2137E/250 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 OPA2137E/250 reliable?
The price and inventory of OPA2137E/250 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2137E/250 is usually 5 days.
3.What payment methods are accepted for OPA2137E/250?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2137E/250 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2137E/250?
OPA2137E/250 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2137E/250 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 OPA2137E/250?
For technical support, including OPA2137E/250 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2137E/250 requirements.
6.How does Aetrix verify that OPA2137E/250 is sourced from the original manufacturer or authorized distributors?
All OPA2137E/250 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 OPA2137E/250 meets industry standards.
7.What is the process for return or replacement of OPA2137E/250?
All OPA2137E/250 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2137E/250, 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 OPA2137E/250 part is unused and in its original packaging.
Return procedure for OPA2137E/250:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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