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Texas Instruments OPA2137E/250G4
- Part No.:
- OPA2137E/250G4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA2137E/250G4.pdf
- Description:
- IC OPAMP JFET 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,690
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Product details
Overview
OPA2137E/250G4 from Texas Instruments (formerly Burr-Brown) is a dual FET-input operational amplifier in MSOP-8 package, delivering 5 pA input bias current, 1.5 mV max input offset voltage, 1 MHz gain-bandwidth product, ±2.25 V to ±18 V dual supply range, and 220 µA per channel quiescent current. It serves precision signal conditioning in battery-powered instrumentation and photodetector front-ends.
For engineers reviewing the OPA2137E/250G4 datasheet, OPA2137E/250G4 pinout, OPA2137E/250G4 application, or OPA2137E/250G4 equivalent, key selection criteria include input bias current stability over temperature, rail-to-rail input capability (extends to V+), low-power operation at ±2.25 V, and channel independence for multi-channel sensing without crosstalk.
Technical Context
The OPA2137E/250G4 implements fully independent dual amplifier circuitry with no shared internal nodes-ensuring zero interaction between channels during overload or short-circuit events. Its FET-input stage enables ultra-low input bias current (5 pA typ) and high input impedance (10¹² Ω || 2 pF), critical for high-impedance sensor interfaces like strain gages and photodiodes.
It features unity-gain stable compensation, 3.5 V/µs slew rate, and input common-mode range extending to the positive supply rail-enabling high-side current sensing and single-supply operation down to +4.5 V. Guaranteed performance spans –40°C to +85°C with 94 dB open-loop gain and 76 dB CMRR.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Bias Current | ±5 pA typ - enables accurate amplification of nanoamp-level photodiode or leakage currents without significant error. |
| Input Offset Voltage | ±1.5 mV max - supports DC-coupled precision gain stages with sub-mV output error at unity gain. |
| Gain-Bandwidth Product | 1 MHz - allows stable closed-loop operation up to ~100 kHz at G = 10, suitable for active filters and sensor signal bandwidths. |
| Supply Voltage Range | ±2.25 V to ±18 V dual / +4.5 V to +36 V single - supports portable, industrial, and wide-range analog front-ends without external regulation. |
| Quiescent Current | ±220 µA per channel - enables dual-channel operation on coin-cell or micro-power supplies with <450 µA total IQ. |
| Input Common-Mode Range | (V–) + 3 V to V+ - permits direct high-side current sensing and single-supply operation with inputs referenced to V+. |
| Open-Loop Gain | 94 dB typ - ensures <0.002% gain error at G = 100, critical for precision integrators and reference buffers. |
Pinout & Package
OPA2137E/250G4 is packaged in an 8-pin VSSOP (DGK) surface-mount package measuring 3.0 mm × 3.0 mm × 1.0 mm, optimized for space-constrained PCB layouts while maintaining thermal resistance of 150°C/W (θJA).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | V– | Negative supply rail connection; all internal circuitry referenced to this node. |
| 2 | +In A | Non-inverting input of Amplifier A; high-impedance FET node (10¹² Ω || 2 pF). |
| 3 | –In A | Inverting input of Amplifier A; matched to +In A for optimal CMRR and offset performance. |
| 4 | Out A | Amplifier A output; capable of sourcing/sinking ±25 mA and driving ≥1000 pF capacitive loads. |
| 5 | Out B | Amplifier B output; electrically isolated from Out A-no crosstalk even under overload. |
| 6 | –In B | Inverting input of Amplifier B; fully independent circuitry prevents interaction with Channel A. |
| 7 | +In B | Non-inverting input of Amplifier B; identical input structure and biasing as +In A. |
| 8 | V+ | Positive supply rail connection; input common-mode range extends to this pin. |
Key Features
| Feature | Design Value |
|---|---|
| FET-input architecture | 5 pA input bias current enables direct interfacing with high-impedance sensors (e.g., photodiodes, pH electrodes) without guard rings or bias compensation networks. |
| Rail-to-rail input (to V+) | Common-mode range includes V+, allowing high-side current sensing and single-supply configurations where input signals approach the positive rail. |
| Channel independence | Dual amplifiers share no internal nodes-overload or short-circuit on one channel has zero effect on the other's output or bias points. |
| Low quiescent power | 220 µA per channel at ±15 V enables dual-channel precision amplification in battery-operated devices with >1-year runtime on AA cells. |
| Unity-gain stable | No external compensation required; supports G ≥ 1 configurations including voltage followers and active filters without oscillation. |
Applications
| Strain Gage Amplifier | Photodetector Amplifier |
|---|---|
|
Use Scenario: Wheatstone bridge output from metal foil or semiconductor strain gages in load cells or pressure transducers. IC Role / Device Role / Timing Role: Instrumentation amplifier front-end with high input impedance and low offset drift to resolve µV-level differential signals. Use Value: 5 pA input bias current prevents bridge imbalance errors; 1.5 mV max VOS ensures <0.1% full-scale error in 1 mV/V gage outputs. |
Use Scenario: Transimpedance amplification of current from BPW34 or similar silicon photodiodes in optical encoders or ambient light sensors. IC Role / Device Role / Timing Role: Low-noise, low-input-bias transimpedance amplifier converting photocurrent to voltage with minimal dark-current contribution. Use Value: 5 pA IB avoids adding >1% error to 500 pA photocurrents; 45 nV/√Hz voltage noise preserves SNR in low-light conditions. |
| Precision Integrator | Battery-Powered Instruments |
|
Use Scenario: Analog integration in PID controllers, charge amplifiers for piezoelectric sensors, or waveform generators. IC Role / Device Role / Timing Role: Integrator core with ultra-low input bias current to minimize drift and long-term output ramp error. Use Value: 5 pA IB limits integrator drift to <1 mV/s at 1 µF CF, enabling stable 10-second integration windows without reset. |
Use Scenario: Signal conditioning in handheld multimeters, portable gas analyzers, or wearable health monitors. IC Role / Device Role / Timing Role: Dual-channel analog front-end for simultaneous sensor readout (e.g., temperature + humidity) with minimal power draw. Use Value: 440 µA total IQ at ±2.25 V allows >2-year operation on two CR2032 cells; MSOP-8 footprint saves >60% board area vs SO-8. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual FET-input op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2134UA/2K5 | Lower input bias current (0.8 pA), higher GBW (8 MHz), higher IQ (4 mA/channel), SO-8 only. | Better for audio or high-speed precision; unsuitable for micro-power designs due to 8× higher quiescent current. | Select OPA2134UA/2K5 only when bandwidth >1 MHz and ultra-low IB are mandatory-and power budget allows ≥8 mA total. |
| TL072CDR | Higher IB (30 pA), lower VOS (6 mV max), same GBW (3 MHz), SO-8, lower cost. | Acceptable for non-critical AC-coupled applications; not recommended for DC-coupled high-Z sensors due to 6× higher input bias. | Choose TL072CDR for cost-sensitive, AC-only signal paths where input impedance >10⁹ Ω is sufficient and offset drift is tolerable. |
Compared with OPA2137E/250G4, OPA2134UA/2K5 trades 8× higher power for 8× more bandwidth and 6× lower input bias, while TL072CDR offers 40% lower cost but sacrifices DC precision and high-impedance compatibility-making OPA2137E/250G4 the optimal balance for micro-power, high-Z, DC-coupled dual-channel systems.
Availability
OPA2137E/250G4 is available at Aetrix Electronics and suitable for strain gage amplifiers, photodetector front-ends, precision integrators, battery-powered instrumentation, and active filter designs requiring stable component supply across industrial temperature ranges.
Supply support for OPA2137E/250G4 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 precision analog portfolio, emphasizing high-performance, low-power, and high-reliability signal-chain components for industrial, medical, and test equipment.
The OPA2137E/250G4 belongs to the MicroAmplifier™ series, designed specifically for miniature, low-cost, FET-input op amp applications demanding ultra-low input bias current, wide supply flexibility, and guaranteed operation from –40°C to +85°C.
FAQ
What is the maximum operating temperature range for the OPA2137E/250G4?
The OPA2137E/250G4 is specified from –40°C to +85°C for full parameter compliance. It operates continuously from –55°C to +125°C, though certain parameters like input offset voltage drift and CMRR degrade outside the specified range. The device marking "E" denotes the –40°C to +85°C grade, confirmed in TI's PACKAGE OPTION ADDENDUM.
Does the OPA2137E/250G4 support single-supply operation?
Yes, the OPA2137E/250G4 supports single-supply operation from +4.5 V to +36 V. Its input common-mode range extends to the positive rail (V+), enabling high-side sensing and rail-referenced inputs. Output swing is (V–) + 1.2 V to (V+) – 1.1 V, so with V– = 0 V, it delivers ~1.2 V to ~VCC – 1.1 V-sufficient for many 3.3 V or 5 V systems.
Is the OPA2137E/250G4 pin-compatible with other dual op amps in MSOP-8?
No documented pin-compatible replacements exist for the OPA2137E/250G4 in MSOP-8. While the pinout matches standard dual op amp conventions (V–, +In A, –In A, Out A, Out B, –In B, +In B, V+), functional alternatives like OPA2134UA use SO-8 only, and TL072 variants lack MSOP-8 packaging. Layout reuse requires verification of thermal pad presence and solder footprint per TI's DGK drawing.
What is the ESD sensitivity level of the OPA2137E/250G4?
The OPA2137E/250G4 is ESD-sensitive per JEDEC JS-001 Class 2 (≥2 kV HBM). Burr-Brown's datasheet explicitly warns that improper handling may cause parametric degradation or failure. Input terminals are diode-clamped to V+ and V–, but sustained overvoltage >500 mV beyond rails requires external current limiting (e.g., series resistor) to prevent damage-especially critical in photodiode or sensor interfaces.
Can the OPA2137E/250G4 drive capacitive loads without instability?
Yes, the OPA2137E/250G4 is characterized to drive up to 1000 pF capacitive loads without oscillation, as verified in the "Capacitive Load Drive" specification. For loads >100 pF, TI recommends using the recommended bypassing (10 nF ceramic on each supply pin) and avoiding long traces. Stability is maintained across all gains ≥1 due to internal unity-gain compensation.
OPA2137E/250G4 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/250G4 FAQ
1.How can I place an order for OPA2137E/250G4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2137E/250G4 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/250G4 reliable?
The price and inventory of OPA2137E/250G4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2137E/250G4 is usually 5 days.
3.What payment methods are accepted for OPA2137E/250G4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2137E/250G4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2137E/250G4?
OPA2137E/250G4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2137E/250G4 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/250G4?
For technical support, including OPA2137E/250G4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2137E/250G4 requirements.
6.How does Aetrix verify that OPA2137E/250G4 is sourced from the original manufacturer or authorized distributors?
All OPA2137E/250G4 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/250G4 meets industry standards.
7.What is the process for return or replacement of OPA2137E/250G4?
All OPA2137E/250G4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2137E/250G4, 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/250G4 part is unused and in its original packaging.
Return procedure for OPA2137E/250G4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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