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Texas Instruments TLV4120IDGNR
- Part No.:
- TLV4120IDGNR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
TLV4120IDGNR.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8HVSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:431
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Product details
Overview
TLV4120IDGNR from Texas Instruments is a single-supply, rail-to-rail output, high-output-current differential operational amplifier delivering >200 mA per output at 5 V supply, with 2.4 MHz unity-gain bandwidth and 1.5 V/µs slew rate. It integrates dual amplifiers (A1 configurable, A2 fixed inverting) to generate true differential current drive for line drivers, LVDT excitation, and coil driving in industrial sensor interfaces.
For engineers reviewing the TLV4120IDGNR datasheet, TLV4120IDGNR pinout, TLV4120IDGNR application, or TLV4120IDGNR equivalent, key selection considerations include its shutdown-enabled ultra-low quiescent current (6 µA), MSOP PowerPAD thermal performance, differential gain configuration via external RF/RS resistors, and operation across −40°C to 85°C industrial temperature range.
Technical Context
The TLV4120IDGNR implements a two-amplifier architecture: A1 is a fully configurable op-amp (inverting/noninverting/difference), while A2 is internally biased at VDD/2 and configured as a fixed inverting amplifier. This topology enables precise differential output generation without external level-shifting circuitry.
Its differential drive doubles voltage swing across bridge-tied loads-e.g., 2×VO(PP) vs. single-ended-quadrupling delivered power. The internal VDD/2 bias network uses 500 kΩ resistors, and shutdown control disables both outputs into high-Z while reducing supply current to 6 µA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 200 mA per output at 5 V (measured at 0.5 V from rail); supports heavy resistive or inductive loads without external boost stages. |
| Unity-Gain Bandwidth | 2.4 MHz; enables stable closed-loop operation up to ~200 kHz with moderate capacitive loading (≤10 pF). |
| Slew Rate | 1.5 V/µs at 5 V supply; sufficient for <1 µs settling of 1 VPP signals in low-frequency precision drive applications. |
| Rail-to-Rail Output | Swings within 0.1 V of rails at 100 mA load; preserves dynamic range in 2.7–5.5 V single-supply systems. |
| Supply Voltage Range | 2.7 V to 5.5 V; compatible with Li-ion, USB, and industrial 3.3 V/5 V rails without level translation. |
| Shutdown Current | 6 µA typical; reduces system standby power by >99% versus active mode (1.4 mA), critical for battery-powered sensors. |
| Operating Temperature | −40°C to +85°C (industrial grade); validated for use in motor control feedback, factory automation, and test equipment. |
Pinout & Package
The TLV4120IDGNR is housed in an 8-pin MSOP PowerPAD™ package (DGN), featuring an exposed thermal pad on the underside for direct PCB copper connection. This thermally enhanced construction achieves θJA = 52.7°C/W and θJC = 4.7°C/W, enabling >1 W continuous dissipation with proper layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SHDN | Shutdown control input | Active-high logic: >0.75×VDD disables amplifier (outputs high-Z, IDD ≈ 6 µA); |
| 2 - IN− | Inverting input of A1 | Configurable node for inverting gain, difference amplification, or feedback path; high-impedance MOS input (IIB ≤ 300 pA). |
| 3 - IN+ | Noninverting input of A1 | Configurable node for noninverting gain or reference biasing; accepts common-mode voltages from 0.5 V to VDD−0.5 V. |
| 4 - VDD/2 | Internal mid-rail bias reference | Output of internal 500 kΩ divider; requires external 0.1–2.2 µF low-ESR bypass capacitor (CB) for stability and noise reduction. |
| 5 - VO− | Negative differential output | Output of A2 (inverting stage); swings complementary to VO+ to deliver true differential current to load. |
| 6 - GND | Analog ground reference | Return path for all internal bias currents; must be connected to PCB ground plane and tied to PowerPAD thermal pad. |
| 7 - VDD | Positive supply rail | Accepts 2.7–5.5 V; requires local 0.1 µF ceramic + 10 µF bulk decoupling per application note SLMA002. |
| 8 - VO+ | Positive differential output | Output of A1; forms differential pair with VO−; each output delivers up to 200 mA into 100 Ω load at 5 V. |
Key Features
| Feature | Design Value |
|---|---|
| Differential output drive | Generates true complementary outputs (VO+, VO−) without external components-enables bridge-tied load configurations that double voltage swing and quadruple delivered power. |
| MSOP PowerPAD thermal package | Exposed thermal pad reduces junction-to-ambient thermal resistance by >50% vs. standard MSOP; supports >350 mA continuous output per channel at TJ ≤ 105°C. |
| Configurable A1 amplifier | A1's uncommitted inputs allow inverting, noninverting, or difference configurations-provides flexibility in signal conditioning before differential conversion by A2. |
| VDD/2 internal bias generator | On-chip 500 kΩ resistor divider establishes stable mid-rail reference; eliminates need for external resistive divider and improves PSRR over discrete solutions. |
| Low-power shutdown mode | Reduces supply current to 6 µA while placing both outputs in high-impedance state-ideal for time-multiplexed sensor excitation or energy-constrained portable instrumentation. |
Applications
| LVDT Excitation | Industrial Line Driver |
|---|---|
|
Use Scenario: Driving primary winding of linear variable differential transformer (LVDT) in position sensing modules for hydraulic valves and CNC machine tools. IC Role / Device Role / Timing Role: Provides low-distortion, matched differential current source to excite LVDT at 1–10 kHz with precise amplitude control. Use Value: Delivers 200 mA differential drive at 5 V while maintaining THD+N < 0.1% at 1 kHz-ensuring sub-micron position resolution and long-term calibration stability. |
Use Scenario: Transmitting analog signals over 100–500 m twisted-pair cables in factory floor I/O modules and PLC analog outputs. IC Role / Device Role / Timing Role: Acts as robust differential line driver with rail-to-rail swing and high EMI immunity against 50/60 Hz noise and motor switching transients. Use Value: Achieves >70 dB CMRR and >65 dB PSRR across 10 Hz–100 kHz-reducing received signal error to <0.05% even in electrically noisy industrial environments. |
| Coil Driver for Solenoid Control | Bridge-Tied Audio Transducer Driver |
|
Use Scenario: Directly energizing 24 V solenoid coils in pneumatic valve manifolds requiring fast turn-on/turn-off with minimal external components. IC Role / Device Role / Timing Role: Serves as high-current, thermally robust driver with integrated shutdown for duty-cycled actuation sequences. Use Value: Sustains 200 mA continuous per output at 85°C ambient using PowerPAD layout-eliminates need for discrete MOSFETs and heat sinks in space-constrained valve controllers. |
Use Scenario: Driving piezoelectric or moving-iron audio transducers in portable test equipment and ultrasonic cleaning generators. IC Role / Device Role / Timing Role: Functions as low-noise, wide-bandwidth differential driver delivering clean 1–20 kHz excitation without coupling transformers. Use Value: Delivers 4.5 VPP differential swing into 100 Ω load at 5 V supply with 10 nV/√Hz input noise-preserving signal fidelity for amplitude-sensitive acoustic measurements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar differential drive amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| THS3091DGNR | Higher slew rate (2750 V/µs), wider bandwidth (210 MHz), but no integrated VDD/2 bias or shutdown; requires external level shift. | Better suited for high-speed pulse applications (>1 MHz), not optimized for low-frequency high-current drive or power-sensitive systems. | Choose THS3091DGNR only when bandwidth >10 MHz is required and external bias/shutdown circuitry is acceptable. |
| OPA1632DGKR | Lower output current (±80 mA), no shutdown, but superior THD+N (−124 dB) and lower noise (2.3 nV/√Hz); includes matched internal resistors. | Targeted at high-fidelity audio and precision measurement-not designed for >100 mA load drive or industrial temperature range. | Select OPA1632DGKR when distortion and noise dominate requirements, and load current stays below 80 mA. |
Compared with THS3091DGNR and OPA1632DGKR, the TLV4120IDGNR uniquely combines 200 mA differential drive, integrated VDD/2 bias, shutdown capability, and industrial temperature rating in a thermally optimized MSOP PowerPAD package-making it the only choice for cost-sensitive, power-aware, high-current differential excitation where bandwidth ≤2.4 MHz suffices.
Availability
TLV4120IDGNR is available at Aetrix Electronics and suitable for LVDT excitation, industrial line driving, and solenoid coil control requiring stable component supply, long-term manufacturability, and guaranteed thermal performance in harsh environments.
Supply support for TLV4120IDGNR 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 technologies, with decades of expertise in precision amplifiers and power-efficient signal conditioning ICs.
The TLV4120IDGNR belongs to TI's high-output-current operational amplifier product line, engineered specifically for industrial sensor excitation, robust line driving, and thermally demanding differential interface applications.
FAQ
What is the maximum continuous output current per channel for TLV4120IDGNR at 85°C ambient?
The TLV4120IDGNR delivers 200 mA per output at 5 V supply when measured at 0.5 V from rail, verified across −40°C to 85°C. At TA = 85°C and TJ ≤ 105°C, continuous current remains 200 mA per channel with proper PowerPAD thermal design (θJA ≤ 52.7°C/W). Derating applies above TJ = 105°C per the Dissipation Rating Table.
How does the TLV4120IDGNR achieve differential output without external components?
The TLV4120IDGNR integrates two amplifiers: A1 (configurable op-amp) drives VO+, while A2 (fixed inverting amplifier biased at VDD/2) mirrors and inverts A1's output to generate VO−. This internal architecture produces true complementary differential outputs referenced to VDD/2, eliminating need for external inverters or level shifters.
Can TLV4120IDGNR drive capacitive loads, and what is the recommended compensation?
Yes, TLV4120IDGNR can drive capacitive loads up to 10 pF stably. For loads >1 nF, TI recommends adding a series null resistor (RNULL) between each output and the load, as shown in Figure 22 of SLOS310B. RNULL mitigates phase-margin degradation and prevents ringing, though it slightly reduces peak current capability.
What is the role of the VDD/2 pin, and why is an external capacitor required?
The VDD/2 pin provides the internal mid-rail bias reference for A2 and sets the common-mode level for differential output. A 0.1–2.2 µF low-ESR ceramic or tantalum capacitor (CB) must be placed directly at this pin to stabilize startup, suppress noise coupling from the internal divider, and maintain PSRR >65 dB. Leaving CB unconnected causes instability and degraded THD+N.
Is TLV4120IDGNR pin-compatible with other Texas Instruments DGN-package amplifiers?
No, TLV4120IDGNR has a unique 8-pin functional assignment (SHDN, IN−, IN+, VDD/2, VO−, GND, VDD, VO+) not shared by other TI DGN op-amps like OPAx350 or TLVx170. Pin compatibility cannot be assumed-even with same package footprint-due to differing internal architecture and bias requirements.
TLV4120IDGNR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Differential
- Slew Rate:
- 1.57V/µs
- Gain Bandwidth Product:
- 2.4 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.3 pA
- Voltage - Input Offset:
- 100 µV
- Current - Supply:
- 1.4mA
- Current - Output / Channel:
- 320 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-HVSSOP
TLV4120IDGNR FAQ
1.How can I place an order for TLV4120IDGNR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV4120IDGNR 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 TLV4120IDGNR reliable?
The price and inventory of TLV4120IDGNR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV4120IDGNR is usually 5 days.
3.What payment methods are accepted for TLV4120IDGNR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV4120IDGNR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV4120IDGNR?
TLV4120IDGNR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV4120IDGNR 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 TLV4120IDGNR?
For technical support, including TLV4120IDGNR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV4120IDGNR requirements.
6.How does Aetrix verify that TLV4120IDGNR is sourced from the original manufacturer or authorized distributors?
All TLV4120IDGNR 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 TLV4120IDGNR meets industry standards.
7.What is the process for return or replacement of TLV4120IDGNR?
All TLV4120IDGNR units undergo pre-shipment inspection (PSI). If there is an issue with TLV4120IDGNR, 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 TLV4120IDGNR part is unused and in its original packaging.
Return procedure for TLV4120IDGNR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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