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Texas Instruments OPA837IDBVR
- Part No.:
- OPA837IDBVR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-6
- Datasheet:
-
OPA837IDBVR.pdf
- Description:
- IC OPAMP VFB 1 CIRCUIT SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,803
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Product details
Overview
OPA837IDBVR from Texas Instruments is a single-channel, voltage-feedback operational amplifier optimized as a low-power, precision SAR ADC driver with true ground-referenced input and rail-to-rail output. It delivers 105 MHz bandwidth at unity gain, 600 µA quiescent current, ±130 µV max input offset voltage, and 4.7 nV/√Hz input voltage noise - enabling high-fidelity signal conditioning in 12- to 16-bit data acquisition systems operating from 2.7 V to 5.4 V supplies.
For engineers reviewing the OPA837IDBVR datasheet, OPA837IDBVR pinout, OPA837IDBVR application, or OPA837IDBVR equivalent, this page provides verified technical context, package-specific pin functions, real-world application mappings, and validated alternative options for low-power precision amplifier selection in battery-constrained and noise-sensitive measurement circuits.
Technical Context
The OPA837IDBVR employs a unity-gain-stable voltage-feedback architecture with negative-rail input capability and rail-to-rail output swing - supporting true ground-referenced sensing and single-supply operation down to 2.7 V. Its 50 MHz gain-bandwidth product and 105 V/µs slew rate ensure fast settling (35 ns to 0.1%) and low dynamic output impedance for driving SAR ADC input capacitors.
Integrated power-down functionality (PD pin) enables dynamic power scaling with 5 µA shutdown current and sub-300 ns wake-up latency. Input offset drift is trimmed to < ±1.6 µV/°C (DCK) or < ±2.0 µV/°C (DBV), and harmonic distortion remains ultra-low (HD2 = –120 dBc, HD3 = –145 dBc at 100 kHz) under 2 VPP conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bandwidth (AV = 1) | 105 MHz - supports wideband signal acquisition without phase loss in high-speed SAR driver loops. |
| Quiescent Current | 600 µA - enables multi-channel, always-on sensor interfaces with sub-3 mW per channel power budget. |
| Input Offset Voltage (max) | ±130 µV - ensures ≤0.002% full-scale error in 16-bit (±10 V) systems without trimming. |
| Input Voltage Noise | 4.7 nV/√Hz - preserves SNR in low-amplitude sensor front-ends (e.g., strain gauges, thermopiles). |
| Settling Time (0.1%) | 35 ns - meets timing requirements of 1 MSPS SAR ADCs like ADS8860 with margin. |
| Power-Down Current | 5 µA - allows >100× current reduction during idle cycles while retaining fast recovery (<300 ns). |
| Supply Range | 2.7 V to 5.4 V - compatible with Li-ion, 3.3 V, and 5 V system rails without level-shifting. |
Pinout & Package
OPA837IDBVR is packaged in a 6-pin SOT-23 (DBV) with 2.90 mm × 1.60 mm body size, optimized for space-constrained PCB layouts and thermal performance (RθJA = 194°C/W).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOUT | Amplifier output - drives ADC input capacitor or reference buffer load with low 0.14 Ω closed-loop impedance at 1 MHz. |
| 2 | VS− | Negative supply - accepts 0 V (single-supply) or negative rail; enables true ground-input operation. |
| 3 | VIN+ | Noninverting input - high-impedance (180 kΩ || 0.5 pF) node for precision sensor or reference connections. |
| 4 | VIN− | Inverting input - matched to VIN+ for differential gain configurations; supports active filter feedback networks. |
| 5 | PD | Power-down control - logic-high enables operation; logic-low reduces supply current to 5 µA with fast recovery. |
| 6 | VS+ | Positive supply - accepts 2.7–5.4 V; PSRR > 95 dB minimizes supply ripple coupling into signal path. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Drives within 100 mV of VS+ and VS− at 2 kΩ load - maximizes dynamic range for 16-bit ADCs. |
| Negative-rail input | Accepts signals down to VS− (0 V) - eliminates need for level-shifting in ground-referenced sensor interfaces. |
| Ultra-low input offset drift | < ±2.0 µV/°C (DBV package) - maintains accuracy across –40°C to +125°C industrial temperature range. |
| Low-noise, low-distortion | 4.7 nV/√Hz input noise + –145 dBc HD3 - preserves signal integrity in precision analog front-ends. |
| Fast power-down recovery | 300 ns turn-on delay - enables burst-mode sampling without sacrificing throughput or timing margin. |
Applications
| 12-Bit to 16-Bit SAR ADC Driver | Precision ADC Reference Buffer |
|---|---|
|
Use Scenario: Driving the switched-capacitor input of a 1 MSPS SAR ADC such as ADS8860 in portable data loggers. IC Role / Device Role / Timing Role: High-speed, low-noise buffer that settles within 35 ns to 0.1% after each sample command, supplying peak charging current without droop. Use Value: Enables full 16-bit ENOB by minimizing aperture uncertainty and maintaining SNR > 92 dB at 100 kHz. |
Use Scenario: Buffering a precision voltage reference (e.g., REF5040) for multiple SAR ADCs in a multichannel DAQ system. IC Role / Device Role / Timing Role: Low-output-impedance reference follower with < ±130 µV offset, rejecting supply ripple via >95 dB PSRR. Use Value: Prevents reference loading errors and cross-channel crosstalk, ensuring < 0.001% gain matching across channels. |
| Low-Power Transimpedance Amplifier | Wearable Device Sensor Interface |
|
Use Scenario: Converting photodiode current to voltage in optical pulse oximetry modules with strict 3.3 V battery constraints. IC Role / Device Role / Timing Role: TIA with 2.2 nF feedback capacitor and 10 kΩ gain resistor, leveraging low input bias current (≤520 nA) and low noise. Use Value: Achieves >100 dB dynamic range while consuming only 3 mW - extending wearable battery life beyond 7 days. |
Use Scenario: Conditioning ECG/EMG signals in compact fitness trackers requiring small footprint and minimal self-heating. IC Role / Device Role / Timing Role: Single-supply, rail-to-rail amplifier with true ground input - accepts biopotential signals directly without AC coupling or biasing resistors. Use Value: Reduces BOM count by eliminating external bias networks and improves DC accuracy over temperature via < ±2.0 µV/°C drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA320AIDBVR | Lower bandwidth (20 MHz), lower noise (7 nV/√Hz), no power-down pin, SC70-5 package. | Better suited for DC-critical, low-frequency sensor conditioning where speed is secondary to ultra-low offset (±10 µV). | Select when prioritizing DC precision over speed and power-down control is unnecessary. |
| ADA4807-1ARMZ | Higher supply current (1.1 mA), higher bandwidth (225 MHz), no integrated power-down, MSOP-8 package. | Preferred for high-speed, multi-channel systems needing faster settling (<15 ns) and higher drive strength (±70 mA). | Select when system demands >100 MSPS sampling or driving heavy capacitive loads (>1000 pF). |
Compared with OPA320AIDBVR and ADA4807-1ARMZ, the OPA837IDBVR uniquely balances 105 MHz bandwidth, 600 µA quiescent current, and integrated power-down - making it optimal for battery-powered, medium-speed precision data acquisition where dynamic power management and ground-referenced input are mandatory.
Availability
OPA837IDBVR is available at Aetrix Electronics and suitable for 16-bit SAR ADC drivers, precision reference buffers, and wearable sensor interfaces requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for OPA837IDBVR 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 company specializing in analog and embedded processing technologies, with leadership in precision amplifiers, data converters, and power management ICs.
The OPA837IDBVR belongs to TI's OPAx837 family of low-power, high-speed precision op amps - designed specifically for single-supply, ground-referenced signal chains in portable instrumentation, medical sensors, and industrial IoT endpoints.
FAQ
What is the maximum supply voltage for OPA837IDBVR?
The OPA837IDBVR supports a recommended operating supply range of 2.7 V to 5.4 V on VS+, with VS− referenced to 0 V in single-supply mode. Absolute maximum ratings specify VS+ to VS− ≤ 5.5 V, so operation at 5.4 V is safe and fully characterized per datasheet specifications.
Does OPA837IDBVR support true ground-referenced input?
Yes, the OPA837IDBVR features negative-rail input capability: its common-mode input range extends to VS− (0 V) with no degradation in CMRR. This allows direct connection of ground-referenced sensors - such as bridge outputs or thermocouples - without external biasing networks.
How does the power-down feature of OPA837IDBVR work?
The PD pin on OPA837IDBVR is an active-high enable: driving it ≥1.5 V above VS− activates normal operation; pulling it ≤0.55 V above VS− places the amplifier in shutdown mode, reducing quiescent current to 5 µA. Turn-on delay is 300 ns, ensuring minimal latency in burst-sampling applications.
What is the typical input voltage noise of OPA837IDBVR and at what frequency is it specified?
The OPA837IDBVR has a typical input voltage noise of 4.7 nV/√Hz, measured at frequencies >100 Hz and confirmed at 500 Hz in the datasheet. This low noise floor is maintained across its 105 MHz bandwidth, making it suitable for high-resolution sensor signal chains where noise dominates SNR.
Can OPA837IDBVR drive the input of the ADS8860 16-bit SAR ADC?
Yes, the OPA837IDBVR is explicitly cited in TI documentation as an optimal driver for the ADS8860. Its 35 ns settling time to 0.1%, 105 MHz bandwidth, and low 0.14 Ω output impedance at 1 MHz meet the ADS8860's 1 MSPS sampling requirement while minimizing charge injection errors and maintaining ENOB > 15.5 bits.
OPA837IDBVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 105V/µs
- Gain Bandwidth Product:
- 50 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 340 nA
- Voltage - Input Offset:
- 30 µV
- Current - Supply:
- 592µA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.4 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
OPA837IDBVR FAQ
1.How can I place an order for OPA837IDBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA837IDBVR 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 OPA837IDBVR reliable?
The price and inventory of OPA837IDBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA837IDBVR is usually 5 days.
3.What payment methods are accepted for OPA837IDBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA837IDBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA837IDBVR?
OPA837IDBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA837IDBVR 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 OPA837IDBVR?
For technical support, including OPA837IDBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA837IDBVR requirements.
6.How does Aetrix verify that OPA837IDBVR is sourced from the original manufacturer or authorized distributors?
All OPA837IDBVR 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 OPA837IDBVR meets industry standards.
7.What is the process for return or replacement of OPA837IDBVR?
All OPA837IDBVR units undergo pre-shipment inspection (PSI). If there is an issue with OPA837IDBVR, 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 OPA837IDBVR part is unused and in its original packaging.
Return procedure for OPA837IDBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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