My Inquiry
My Account
Texas Instruments OPA846IDBVTG4
- Part No.:
- OPA846IDBVTG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
OPA846IDBVTG4.pdf
- Description:
- IC OPAMP VFB 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,125
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
OPA846IDBVTG4 from Texas Instruments is a wideband, low-noise, voltage-feedback operational amplifier optimized for high-dynamic-range signal conditioning. It delivers 400MHz bandwidth at G = +10, 1.2nV/√Hz input voltage noise, –100dBc 2nd-harmonic distortion at 5MHz, 625V/µs slew rate, and ±150µV input offset voltage - enabling precision front-end amplification in ultrasound channel receivers and ADC preamplifiers.
For engineers reviewing the OPA846IDBVTG4 datasheet, OPA846IDBVTG4 pinout, OPA846IDBVTG4 application, or OPA846IDBVTG4 equivalent, this page provides verified pin configuration, gain-stability boundaries (stable ≥ G = +7), transimpedance design guidance, thermal resistance (θJA = 150°C/W), and direct alternatives with documented performance trade-offs.
Technical Context
The OPA846IDBVTG4 uses a classical differential input stage followed by two forward-gain stages and a high-power output stage, delivering exceptional linearity and DC accuracy. Its voltage-feedback architecture supports standard op-amp configurations while maintaining stability down to closed-loop gains of +7.
It achieves 1750MHz gain-bandwidth product and flat frequency response up to 140MHz at G = +10 with 0.1dB gain flatness. External compensation enables stable operation below minimum gain, extending utility in low-gain, high-slew-rate transimpedance and differential receiver applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bandwidth (G = +10) | 400MHz - supports >200MHz analog signal chains for 12–16-bit ADC drivers |
| Input Voltage Noise | 1.2nV/√Hz - enables ultra-low-noise transimpedance amplification with photodiode detectors |
| Slew Rate | 625V/µs - preserves fast transient fidelity in pulse-based ultrasound and security sensor front ends |
| Harmonic Distortion | –100dBc (2nd, 5MHz, RL = 500Ω) - meets stringent SFDR requirements in VDSL and differential receivers |
| Gain Bandwidth Product | 1750MHz - allows high closed-loop gain (>G = +40) while retaining >40MHz bandwidth |
| Input Offset Voltage | ±150µV - ensures <±4.1mV worst-case output DC error in 10kΩ transimpedance designs |
| Supply Current | 12.6mA - balances power efficiency with wideband performance in portable medical and test equipment |
Pinout & Package
SOT-23-5 package (DBV), 5-pin surface-mount, 1.6mm × 2.9mm footprint, exposed pad not electrically connected. Thermal resistance θJA = 150°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | +VS | Positive supply input; requires local 0.1µF decoupling to ground for RF stability |
| 2 | Inverting Input (–) | Differential input node; matched 50Ω source termination recommended for inverting gain |
| 3 | Output | High-current capable (±60mA min); drives 100Ω loads to ±2.9V swing with <0.1% settling in 16ns |
| 4 | –VS | Negative supply input; symmetric ±5V operation specified; absolute max ±6.5V |
| 5 | Noninverting Input (+) | Differential input node; 10kΩ-to-ground resistor minimizes bias current-induced DC error in transimpedance use |
Key Features
| Feature | Design Value |
|---|---|
| Stable Gain Range | Guaranteed stability for closed-loop gains ≥ +7 - eliminates need for external compensation in most G ≥ +10 designs |
| Low-Distortion Output Stage | –100dBc 2nd-harmonic at 5MHz enables >90dB SFDR in 12-bit ADC preamps without post-filtering |
| Transimpedance Optimization | 1.2nV/√Hz + 2.8pA/√Hz noise combination minimizes total input-referred noise in 10kΩ–100kΩ photodiode amplifiers |
| DC Accuracy | ±150µV VOS and ±0.4µV/°C drift support <±21.5µV/°C output drift in precision sensor front ends |
| Thermal Performance | θJA = 150°C/W in SOT-23-5 enables 12.6mA operation at +85°C ambient without derating |
Applications
| Ultrasound Channel Amplifier | VDSL Line Receiver |
|---|---|
Use Scenario: Amplifying weak echo signals from piezoelectric transducers across 1–20MHz bandwidth with minimal added noise. IC Role / Device Role / Timing Role: Low-noise, high-slew-rate voltage gain stage preceding 14-bit ADC sampling at 40MSPS. Use Value: 1.2nV/√Hz input noise and 625V/µs slew rate preserve SNR and pulse fidelity for sub-millimeter tissue resolution. |
Use Scenario: Receiving asymmetric upstream/downstream signals over twisted-pair telephone lines with high near-end crosstalk rejection. IC Role / Device Role / Timing Role: Differential receiver front end with >110dB CMRR supporting 30MHz VDSL2 spectrum. Use Value: –100dBc harmonic distortion at 5MHz and 400MHz bandwidth enable full-spectrum signal recovery without clipping artifacts. |
| High-Dynamic-Range ADC Preamplifier | Security Sensor Front End |
Use Scenario: Driving 12–16-bit analog-to-digital converters in test equipment requiring >90dB SFDR and <1ps jitter contribution. IC Role / Device Role / Timing Role: G = +10 noninverting buffer with 0.1dB flatness to 140MHz, directly coupled to ADC input. Use Value: 400MHz bandwidth and 1750MHz GBP ensure minimal group delay variation and phase linearity across Nyquist band. |
Use Scenario: Conditioning microvolt-level signals from passive infrared (PIR) or microwave Doppler sensors in intrusion detection systems. IC Role / Device Role / Timing Role: Low-drift, low-noise instrumentation amplifier stage rejecting EMI in unshielded indoor environments. Use Value: ±150µV VOS and ±0.4µV/°C drift minimize false triggers; 12.6mA quiescent current supports battery-powered operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar wideband, low-noise op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA847 | Lower input voltage noise (0.85nV/√Hz), higher GBP (3900MHz), but unstable below G = +15 and higher supply current (18mA) | Better for ultra-low-noise transimpedance where gain ≥ +15 is acceptable; unsuitable for G = +7–+10 ADC driver use | Select OPA847 only when noise dominates distortion and gain can be increased to ≥ +15 |
| LMH6624 | Higher input voltage noise (1.9nV/√Hz), lower bandwidth (1.5GHz GBP), but stable at unity gain and lower cost | Acceptable for moderate-dynamic-range receivers where 400MHz bandwidth is not required | Choose LMH6624 for cost-sensitive, unity-gain-stable designs where 1.2nV/√Hz noise is not mandatory |
Compared with OPA846IDBVTG4, OPA847 trades gain stability for lower noise and higher speed, while LMH6624 sacrifices bandwidth and noise performance for broader gain flexibility and lower BOM cost - making OPA846IDBVTG4 the optimal balance for G = +7 to +10, 400MHz, low-distortion applications.
Availability
OPA846IDBVTG4 is available at Aetrix Electronics and suitable for ultrasound imaging systems, VDSL line cards, high-speed data acquisition modules, and security sensor front ends requiring stable component supply with guaranteed long-term sourcing.
Supply support for OPA846IDBVTG4 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 and embedded processing solutions, with decades of expertise in high-performance op-amps and signal chain ICs.
The OPA846IDBVTG4 belongs to TI's OPA8xx family of ultra-wideband, low-noise voltage-feedback op-amps designed specifically for high-fidelity analog front ends in medical imaging, communications infrastructure, and precision test equipment.
FAQ
What is the minimum stable gain for OPA846IDBVTG4?
The OPA846IDBVTG4 is specified as stable for closed-loop gains ≥ +7. At G = +7, it achieves 500MHz bandwidth with typical peaking <0.5dB. Operation below G = +7 requires external compensation, such as the low-gain inverting network shown in Figure 5 of the SBOS250E datasheet. The OPA846IDBVTG4 does not support unity-gain or G = +2 configurations without modification.
Can OPA846IDBVTG4 be used in transimpedance amplifier circuits?
Yes - the OPA846IDBVTG4 is explicitly optimized for wideband transimpedance applications. Its 1.2nV/√Hz input voltage noise and 2.8pA/√Hz input current noise, combined with 1750MHz GBP, enable flat, stable responses up to ~23MHz with 10kΩ feedback and 50pF photodiode capacitance. The datasheet provides Equation 1 and Figure 3 for precise CF calculation.
What is the thermal resistance (θJA) of OPA846IDBVTG4 in its SOT-23-5 package?
The OPA846IDBVTG4 in the DBV (SOT-23-5) package has a junction-to-ambient thermal resistance (θJA) of 150°C/W, measured on a standard JEDEC 2-layer board. This value assumes no copper pour under the package. With 1-in² 2-oz copper beneath the exposed pad area, θJA improves to ~65°C/W - critical for sustaining 12.6mA supply current at +85°C ambient.
Does OPA846IDBVTG4 support single-supply operation?
No - the OPA846IDBVTG4 is characterized and specified only for dual-supply operation (±5V typical, ±6.5V absolute max). Its input common-mode range extends to ±3.2V and output swing to ±3.4V with ≥400Ω load, but rail-to-rail input/output capability is not provided. Single-supply use would violate the specified operating conditions and degrade distortion and bandwidth performance.
How does OPA846IDBVTG4 compare to OPA686 in ADC driver applications?
The OPA846IDBVTG4 replaces the OPA686 with 2.5× higher bandwidth (400MHz vs 160MHz at G = +10), 35% lower input voltage noise (1.2nV/√Hz vs 1.85nV/√Hz), and superior harmonic distortion (–100dBc vs –88dBc at 5MHz). It also offers tighter DC specs: ±150µV VOS vs ±300µV and 625V/µs slew rate vs 470V/µs - making OPA846IDBVTG4 the preferred upgrade for 14–16-bit, >20MSPS ADC interfaces.
OPA846IDBVTG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 625V/µs
- Gain Bandwidth Product:
- 1.75 GHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 10 µA
- Voltage - Input Offset:
- 150 µV
- Current - Supply:
- 12.6mA
- Current - Output / Channel:
- 80 mA
- Voltage - Supply Span (Min):
- 5 V
- Voltage - Supply Span (Max):
- 12 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
OPA846IDBVTG4 FAQ
1.How can I place an order for OPA846IDBVTG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA846IDBVTG4 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 OPA846IDBVTG4 reliable?
The price and inventory of OPA846IDBVTG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA846IDBVTG4 is usually 5 days.
3.What payment methods are accepted for OPA846IDBVTG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA846IDBVTG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA846IDBVTG4?
OPA846IDBVTG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA846IDBVTG4 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 OPA846IDBVTG4?
For technical support, including OPA846IDBVTG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA846IDBVTG4 requirements.
6.How does Aetrix verify that OPA846IDBVTG4 is sourced from the original manufacturer or authorized distributors?
All OPA846IDBVTG4 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 OPA846IDBVTG4 meets industry standards.
7.What is the process for return or replacement of OPA846IDBVTG4?
All OPA846IDBVTG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA846IDBVTG4, 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 OPA846IDBVTG4 part is unused and in its original packaging.
Return procedure for OPA846IDBVTG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA846IDBVTG4 Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
