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Texas Instruments THS4130IDGK
- Part No.:
- THS4130IDGK
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
THS4130IDGK.pdf
- Description:
- IC OPAMP DIFF 1 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,494
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Product details
Overview
THS4130IDGK from Texas Instruments is a fully differential input/output amplifier optimized for high-speed, low-noise signal conditioning in precision analog front-ends. It delivers 170 MHz small-signal bandwidth, 51 V/µs slew rate, –102 dBc THD at 250 kHz (±15 V supply), and 1.25 nV/√Hz input voltage noise - enabling high-fidelity differential ADC driving in medical ultrasound and instrumentation systems.
For engineers reviewing the THS4130IDGK datasheet, THS4130IDGK pinout, THS4130IDGK application, or THS4130IDGK equivalent, this device is selected for demanding single-ended-to-differential conversion, antialiasing filtering, and high-voltage differential transmitter/receiver stages where common-mode rejection >95 dB and wide supply range (±2.5 V to ±15 V) are critical.
Technical Context
The THS4130IDGK implements a true fully differential architecture with matched internal gain paths, enabling precise differential signal generation and rejection of external common-mode interference. Its design includes an active VOCM input for programmable output common-mode level control and internal 10-kΩ output resistors tied to the VCM error amplifier.
It supports both differential and single-ended inputs via configurable feedback networks, operates across –40°C to +85°C, and features an active-low power-down pin (PD) that reduces quiescent current to 0.86 mA while placing outputs in high-impedance state (>1 MΩ).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-signal bandwidth | 170 MHz at ±15 V supply - enables accurate amplification of signals up to ~100 MHz before –3 dB roll-off. |
| Slew rate | 51 V/µs - supports fast transient response for 2-VPP signals without slewing distortion. |
| Total harmonic distortion | –102 dBc at 250 kHz, 2 VPP, ±15 V - ensures minimal spectral contamination in high-resolution data acquisition. |
| Input voltage noise | 1.25 nV/√Hz at 10 kHz - preserves SNR in low-amplitude sensor signal chains. |
| Common-mode rejection | 95 dB at 800 kHz - suppresses coupled noise in noisy industrial or medical environments. |
| Supply voltage range | ±2.5 V to ±15 V (dual) or 5 V to 30 V (single) - accommodates high-headroom differential signal processing without rail splitting. |
| Quiescent current (shutdown) | 0.86 mA - allows low-power standby in battery-sensitive portable ultrasound or portable test equipment. |
Pinout & Package
VSSOP-8 (DGK) package: 8-pin, 3.0 mm × 3.0 mm body, 0.65 mm pitch, exposed thermal pad (electrically isolated, recommended for PCB copper plane connection).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN+ | Differential input (+) | High-impedance, matched input node for positive-phase signal injection or feedback reference. |
| PD | Power-down control | Active-low logic input; pulled high internally to VCC+ via 250 kΩ; drives amplifier into high-Z shutdown below 1.4 V above VCC−. |
| VCC− | Negative supply rail | Connects to negative supply; supports operation down to –15 V; must be decoupled with local 0.1 µF ceramic capacitor. |
| VOUT− | Differential output (−) | Complementary output terminal; forms differential pair with VOUT+; internal 10-kΩ resistor ties to VCM error amplifier. |
| VIN− | Differential input (−) | Matched counterpart to VIN+; differential input resistance is 10 kΩ (diff), 215 MΩ (common-mode). |
| VOCM | Output common-mode control | DC voltage input setting output common-mode level; bypass with 0.1 µF to minimize noise coupling. |
| VCC+ | Positive supply rail | Connects to positive supply; supports operation up to +15 V; requires local 0.1 µF ceramic decoupling. |
| VOUT+ | Differential output (+) | Primary output terminal; paired with VOUT−; differential output impedance is [(2×RF + 2×RG) || 20 kΩ] in closed-loop. |
Key Features
| Feature | Design Value |
|---|---|
| Fully differential I/O architecture | Enables true differential signal generation and rejection of even-order harmonics and common-mode noise without external baluns. |
| Programmable output common-mode voltage (VOCM) | Allows precise alignment of differential output DC level to ADC input range, reducing dynamic range loss and offset errors. |
| Active power-down mode | Reduces ICC to 0.86 mA while placing outputs in >1 MΩ high-impedance state - ideal for time-multiplexed channel architectures. |
| High supply voltage capability | Operates from ±2.5 V to ±15 V - supports high-swing differential signaling in ultrasound beamforming and industrial DAQ systems. |
| Low 1/f noise corner | 350 Hz - maintains low-frequency SNR integrity in slow-scan medical imaging and precision sensor interfaces. |
Applications
| Single-Ended to Differential Conversion | Differential ADC Driver |
|---|---|
Use Scenario: Converting legacy single-ended sensor outputs (e.g., piezoelectric transducers) into balanced differential signals for noise-immune transmission over PCB traces or cables. IC Role / Device Role / Timing Role: Fully differential amplifier configured with single-ended input and differential output; VOCM sets mid-rail output common-mode voltage matching ADC reference. Use Value: Eliminates need for discrete transformer or passive balun, preserving bandwidth and reducing board area while achieving >95 dB CMRR at 800 kHz. |
Use Scenario: Driving high-resolution SAR or pipeline ADCs (e.g., THS1206, AFE58JD18) in medical ultrasound receivers requiring low THD and wide dynamic range. IC Role / Device Role / Timing Role: Precision gain stage with matched output drive; configured for G = 1 or G = 2 using 1% resistors per TI Table 9-1 to maintain balance. Use Value: Delivers –102 dBc THD at 250 kHz and 2 VPP, ensuring >16-bit ENOB performance without post-conversion correction. |
| Differential Antialiasing Filter Driver | Medical Ultrasound Beamformer |
Use Scenario: Buffering and gain-setting stage preceding passive RC antialiasing filters in high-speed data acquisition systems operating up to 100 MSPS. IC Role / Device Role / Timing Role: Low-output-impedance driver (≤41 Ω open-loop) with high slew rate (51 V/µs) to charge filter capacitors without phase lag or settling error. Use Value: Maintains filter group delay flatness and prevents passband droop by delivering full-scale step responses within 61 ns (0.01% settling). |
Use Scenario: Channel-level transmit/receive amplification in portable ultrasound probes, where compact size, low noise, and high voltage swing are essential. IC Role / Device Role / Timing Role: Transmit pulse amplifier and receive LNA buffer; leverages ±15 V supply for >22 VPP differential output swing into 800 Ω load. Use Value: Enables 120 dB dynamic range in echo processing by combining 1.25 nV/√Hz noise floor with –102 dBc THD at fundamental frequencies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fully differential amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| THS4131IDGK | No power-down pin (PD); identical AC performance, noise, and bandwidth; same pinout except PD pin replaced by NC. | Preferred where continuous operation is required and power gating is unnecessary; eliminates PD control logic and pull-up resistor. | Select THS4131IDGK when system-level power sequencing does not require per-channel shutdown capability. |
| LMH5401RTVT | Higher bandwidth (1.8 GHz), higher supply current (32 mA), no VOCM pin; uses current-feedback architecture instead of voltage-feedback. | Better suited for RF/IF differential signaling above 100 MHz; lacks programmable common-mode control needed for precision ADC interfacing. | Choose LMH5401RTVT only for wideband communications or high-frequency test equipment where VOCM control is not required. |
Compared with THS4131IDGK, THS4130IDGK adds controllable power-down for multi-channel power management but shares identical noise, distortion, and bandwidth specs; versus LMH5401RTVT, it trades bandwidth for precision VOCM control and lower quiescent current - making it optimal for DC-coupled, medium-bandwidth instrumentation.
Availability
THS4130IDGK is available at Aetrix Electronics and suitable for medical ultrasound beamformers, high-resolution data acquisition systems, and industrial analog front-ends requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for THS4130IDGK 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 high-performance amplifiers and precision signal chain solutions.
The THS413x product line was designed specifically for fully differential signal conditioning in high-speed, low-noise applications such as medical imaging, test equipment, and communications infrastructure - emphasizing CMRR, THD, and flexible supply operation.
FAQ
What is the function of the VOCM pin on the THS4130IDGK?
The VOCM (Voltage Output Common-Mode) pin on the THS4130IDGK sets the DC level of the differential output pair. Applying a low-impedance voltage to VOCM directly defines the average of VOUT+ and VOUT−. When left floating, it defaults to (VCC+ + VCC−)/2. A 0.1-µF bypass capacitor is recommended to minimize noise coupling into the output common-mode path. This feature ensures precise alignment with ADC input ranges and avoids dynamic range loss.
Does the THS4130IDGK support single-supply operation?
Yes, the THS4130IDGK supports single-supply operation from 5 V to 30 V. In this configuration, VCC− connects to ground and VCC+ to the positive rail. The device maintains full AC performance including 170 MHz bandwidth and –102 dBc THD when operated at 30 V single supply (equivalent to ±15 V dual). Input common-mode range extends from –3.77 V to +4.3 V, allowing flexibility in level-shifting designs.
How does the power-down feature work on the THS4130IDGK?
The THS4130IDGK includes an active-low PD (power-down) pin. Pulling PD ≤1.4 V above VCC− disables the amplifier and reduces quiescent current to 0.86 mA. An internal 250-kΩ pull-up to VCC+ keeps the device enabled if PD is left unconnected. During shutdown, outputs enter a high-impedance state (>1 MΩ), preventing loading of downstream circuitry - critical for multiplexed channel architectures in ultrasound or DAQ systems.
What is the recommended feedback resistor tolerance for optimal THS4130IDGK performance?
Texas Instruments recommends using 1% (or better) tolerance resistors for the feedback network of the THS4130IDGK. Resistor mismatch directly degrades output balance, CMRR, PSRR, and second-harmonic distortion. For example, at G = 1, use matched 390-Ω resistors (RG = RF = 390 Ω); at G = 2, use 374 Ω and 750 Ω. Tight matching preserves >95 dB CMRR and minimizes unwanted common-mode content at the output.
Can the THS4130IDGK drive capacitive loads, and if so, what is the recommended approach?
Yes, the THS4130IDGK can drive capacitive loads, but direct connection >10 pF risks instability due to reduced phase margin. TI recommends inserting a 20-Ω series resistor at each output (VOUT+ and VOUT−) when driving >10 pF. This isolates the amplifier from capacitive reactance and restores stability - especially important in PCB layout routing or coaxial cable interfaces. For 50-Ω systems, use 50-Ω series resistors to simultaneously provide impedance matching and isolation.
THS4130IDGK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- Differential
- Number of Circuits:
- 1
- Output Type:
- Differential
- Slew Rate:
- 52V/µs
- Gain Bandwidth Product:
- 225 MHz
- -3db Bandwidth:
- 150 MHz
- Current - Input Bias:
- 2 µA
- Voltage - Input Offset:
- 200 µV
- Current - Supply:
- 12.3mA
- Current - Output / Channel:
- 85 mA
- Voltage - Supply Span (Min):
- 4 V
- Voltage - Supply Span (Max):
- 33 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
THS4130IDGK FAQ
1.How can I place an order for THS4130IDGK through Aetrix?
Please submit a Request for Quotation (RFQ) for THS4130IDGK 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 THS4130IDGK reliable?
The price and inventory of THS4130IDGK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS4130IDGK is usually 5 days.
3.What payment methods are accepted for THS4130IDGK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS4130IDGK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS4130IDGK?
THS4130IDGK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS4130IDGK 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 THS4130IDGK?
For technical support, including THS4130IDGK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS4130IDGK requirements.
6.How does Aetrix verify that THS4130IDGK is sourced from the original manufacturer or authorized distributors?
All THS4130IDGK 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 THS4130IDGK meets industry standards.
7.What is the process for return or replacement of THS4130IDGK?
All THS4130IDGK units undergo pre-shipment inspection (PSI). If there is an issue with THS4130IDGK, 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 THS4130IDGK part is unused and in its original packaging.
Return procedure for THS4130IDGK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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