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Texas Instruments THS4150CDGN
- Part No.:
- THS4150CDGN
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
THS4150CDGN.pdf
- Description:
- IC OPAMP DIFF 1 CIRCUIT 8HVSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,116
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Product details
Overview
THS4150CDGN from Texas Instruments is a high-speed fully differential amplifier optimized for ADC driving, antialias filtering, and differential signal conditioning. It delivers 150 MHz –3 dB bandwidth (±5 V supply), 650 V/µs slew rate (±15 V), –83 dB total harmonic distortion at 1 MHz, 7.6 nV/√Hz input-referred voltage noise, and features shutdown control (ICC(SD) = 1.3 mA). It operates from ±2.5 V to ±15 V dual supply or 5 V single supply, targeting precision data acquisition systems.
For engineers reviewing the THS4150CDGN datasheet, THS4150CDGN pinout, THS4150CDGN application, or THS4150CDGN equivalent, this page provides verified electrical specifications, package-validated pin functions, real-world use cases in ADC interface and level-shifting circuits, and two confirmed alternative parts with documented functional and application differences.
Technical Context
The THS4150CDGN implements a true fully differential signal path from input to output using TI's BiComI complementary bipolar process, enabling balanced output common-mode noise rejection and reduced second-harmonic distortion. Its internal architecture supports both differential-input/differential-output and single-ended-input/differential-output configurations with gain set by external resistor networks (e.g., Rf = 390 Ω, Rg = 390 Ω for G = 1).
It integrates a dedicated VOCM pin for precise output common-mode level control - internally biased to midrail when unconnected - and a PD (power-down) pin enabling shutdown mode with 1.3 mA quiescent current. The device maintains stable operation across 0°C to 70°C (C-suffix), with thermal design dependent on MSOP PowerPAD™ package mounting to a thermally conductive plane.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| –3 dB Bandwidth | 150 MHz at ±5 V supply - enables wideband signal conditioning up to ~75 MHz Nyquist for high-speed ADCs |
| Slew Rate | 650 V/µs at ±15 V - supports fast transient response for 12–14-bit ADC drivers without slewing-induced distortion |
| Total Harmonic Distortion | –83 dB at 1 MHz, VO = 2 VPP - ensures low spurious content in precision measurement front-ends |
| Input Voltage Noise | 7.6 nV/√Hz above 10 kHz - preserves SNR in medium-bandwidth sensor and instrumentation signal chains |
| Supply Range | ±2.5 V to ±15 V dual or 5 V single - allows flexible integration into mixed-supply data acquisition systems |
| Shutdown Current | 1.3 mA at ±5 V - reduces system power during idle cycles without compromising wake-up latency (1.1 µs) |
| Output Swing | ±3.6 V (min) at ±5 V supply - delivers >7 VPP differential output into 800 Ω load for full-scale ADC input drive |
Pinout & Package
THS4150CDGN is housed in an 8-pin MSOP PowerPAD™ package (DGN), featuring an exposed thermal pad on the underside that must be soldered to a PCB copper pour for thermal management. The PowerPAD™ reduces θJA to 58.4°C/W and enables 1.71 W power dissipation at TA = 25°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SHUTDOWN) | Power-down control input | Active-low logic input; pulls output to high-impedance state and reduces ICC to 1.3 mA when asserted |
| 2 (VIN−) | Inverting input terminal | Differential input node; forms balanced pair with VIN+ for common-mode noise rejection |
| 3 (VOCM) | Output common-mode voltage reference | Sets DC offset of both outputs; defaults to VCC/2 if left open; bypass with 0.1 µF capacitor for stability |
| 4 (VCC+) | Positive supply rail | Accepts +2.5 V to +15 V in dual supply or +5 V in single supply; requires local decoupling |
| 5 (VIN+) | Non-inverting input terminal | Differential input node; matched impedance and layout critical to preserve CMRR and harmonic performance |
| 6 (PD / NC) | Power-down enable (THS4150) / No-connect (THS4151) | Pin 6 is functional SHUTDOWN on THS4150CDGN; unused on THS4151 variants - verify part marking |
| 7 (VCC−) | Negative supply rail | Accepts –2.5 V to –15 V in dual supply; tied to ground in single-supply mode with VOCM = VCC/2 |
| 8 (VOUT−) | Negative differential output | Complementary output to VOUT+; balanced swing required for optimal THD and SFDR performance |
Key Features
| Feature | Design Value |
|---|---|
| Fully differential I/O architecture | Enables common-mode noise rejection at both input and output, improving immunity in noisy industrial environments |
| Programmable output common-mode level | VOCM pin allows direct interfacing to ADC reference inputs (e.g., Vref), eliminating level-shifting components |
| Internal shutdown with fast recovery | 1.1 µs shutdown-to-active delay supports burst-mode signal acquisition and power-gated system designs |
| Optimized for capacitive load driving | Series 20 Ω output isolation resistor recommended for >10 pF loads - prevents ringing in PCB traces and ADC input filters |
| Resistor-matching sensitivity guidance | 1% tolerance feedback/resistor network required to maintain >75 dB CMRR and minimize second-harmonic distortion |
Applications
| ADC Driver Interface | Differential Antialias Filtering |
|---|---|
Use Scenario: Driving the differential input of a 12-bit, 50 MSPS SAR or pipeline ADC (e.g., THS1206) in a data logger. IC Role / Device Role / Timing Role: Fully differential amplifier configured as single-ended-to-differential converter with gain = 1 and VOCM tied to ADC Vref. Use Value: Eliminates need for RF transformers or discrete op-amp pairs; achieves –83 dB THD at 1 MHz while maintaining >70 dB SNR over full dynamic range. |
Use Scenario: Active low-pass filter stage preceding a high-speed ADC to suppress out-of-band noise and prevent aliasing. IC Role / Device Role / Timing Role: THS4150CDGN used as unity-gain buffer and active filter integrator (with R/C network on VOCM and feedback path). Use Value: Enables 2nd-order antialiasing with Q-adjustable topology; preserves phase linearity and group delay flatness up to 70% of –3 dB frequency. |
| Single-Supply Signal Level Shifting | Differential Transmitter for Analog Backplane |
Use Scenario: Converting a 0–3.3 V single-ended sensor output to a ±2 V differential signal compatible with isolated ADC inputs. IC Role / Device Role / Timing Role: Configured as single-ended input, differential output with VOCM = 1.65 V (midrail) and gain = 1.22. Use Value: Delivers rail-to-rail common-mode flexibility and 150 MHz bandwidth - supports multiplexed sensor arrays with <10 ns settling time. |
Use Scenario: Transmitting analog video or IF signals across a backplane with EMI resilience and crosstalk immunity. IC Role / Device Role / Timing Role: Differential transmitter with matched output impedance (via series 20 Ω resistors) and VOCM referenced to backplane common. Use Value: Achieves >87 dB SFDR at 20 MHz and rejects ground-bounce noise - critical for multi-channel simultaneous sampling systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fully differential amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| THS4131CDGN | Lower slew rate (51 V/µs), lower noise (1.3 nV/√Hz), same 150 MHz BW - optimized for low-noise, moderate-speed precision | Better suited for 16-bit/250 kSPS delta-sigma ADCs where THD < –100 dB at 10 kHz matters more than speed | Select THS4131CDGN when input-referred noise dominates system SNR budget and slew-limited distortion is not a concern |
| THS4141CDGN | Higher slew rate (450 V/µs), wider BW (160 MHz), higher noise (6.5 nV/√Hz) - trades noise for speed and transient fidelity | Preferred for >100 MSPS pipeline ADCs requiring sub-5 ns settling to 0.01% with large-signal steps | Choose THS4141CDGN when driving ultra-high-speed ADCs where large-signal linearity and rise-time dominate over integrated noise |
Compared with THS4150CDGN, THS4131CDGN prioritizes ultralow noise at the expense of slew rate, making it ideal for precision dc-coupled measurement; THS4141CDGN emphasizes transient fidelity and bandwidth, better matching wideband communication or video signal paths - all three share identical DGN package and pinout.
Availability
THS4150CDGN is available at Aetrix Electronics and suitable for high-speed data acquisition, industrial sensor signal conditioning, and test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for THS4150CDGN 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, embedded processing, and high-performance signal chain solutions, with decades of expertise in high-speed amplifier design and manufacturing.
The THS4150 belongs to TI's High-Speed Differential I/O Amplifier family, engineered specifically for precision differential signal conditioning in data converter interfaces, antialiasing, and noise-sensitive instrumentation applications.
FAQ
What is the function of the VOCM pin on the THS4150CDGN?
The VOCM pin on the THS4150CDGN sets the common-mode voltage level of both differential outputs. When left unconnected, it defaults to midrail (VCC/2); when driven externally - e.g., by an ADC's Vref output - it precisely centers the output swing for optimal dynamic range. A 0.1 µF bypass capacitor is required for stability, especially at high frequencies.
Does the THS4150CDGN support single-supply operation?
Yes, the THS4150CDGN supports true single-supply operation from 5 V. In this configuration, VCC− is connected to ground, VCC+ to 5 V, and VOCM is internally biased to 2.5 V. The input common-mode range extends from VS− + 1.5 V to VS+ − 1.5 V, allowing 0–3.3 V single-ended inputs with proper biasing.
How does the shutdown feature work on the THS4150CDGN?
The THS4150CDGN uses Pin 1 (SHUTDOWN) as an active-low control: pulling it low disables the output stage, places VOUT+ and VOUT− in high-impedance state, and reduces quiescent current to 1.3 mA. Recovery time from shutdown is 1.1 µs, enabling rapid power cycling in burst-mode acquisition systems without sacrificing signal integrity.
What is the recommended feedback resistor value for unity gain with the THS4150CDGN?
Texas Instruments specifies 390 Ω as the standard feedback resistor (Rf) value for unity-gain (G = 1) configuration with the THS4150CDGN, paired with a matched 390 Ω gain-setting resistor (Rg). This value balances bandwidth, stability, and distortion performance per the datasheet's "Recommended Resistor Values" table and typical application circuits.
Can the THS4150CDGN drive a 50 Ω transmission line directly?
No - the THS4150CDGN should not drive a 50 Ω load directly due to potential instability and degraded distortion. For 50 Ω systems, TI recommends placing a 20 Ω series resistor at each output (VOUT+ and VOUT−) to isolate capacitive loading and provide source-end impedance matching, as validated in the "Driving a Capacitive Load" application note (Figure 34).
THS4150CDGN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- Differential
- Number of Circuits:
- 1
- Output Type:
- Differential
- Slew Rate:
- 650V/µs
- Gain Bandwidth Product:
- 340 MHz
- -3db Bandwidth:
- 150 MHz
- Current - Input Bias:
- 4.3 µA
- Voltage - Input Offset:
- 1.1 mV
- Current - Supply:
- 17.5mA
- Current - Output / Channel:
- 85 mA
- Voltage - Supply Span (Min):
- 4 V
- Voltage - Supply Span (Max):
- 33 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-HVSSOP
THS4150CDGN FAQ
1.How can I place an order for THS4150CDGN through Aetrix?
Please submit a Request for Quotation (RFQ) for THS4150CDGN 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 THS4150CDGN reliable?
The price and inventory of THS4150CDGN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS4150CDGN is usually 5 days.
3.What payment methods are accepted for THS4150CDGN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS4150CDGN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS4150CDGN?
THS4150CDGN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS4150CDGN 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 THS4150CDGN?
For technical support, including THS4150CDGN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS4150CDGN requirements.
6.How does Aetrix verify that THS4150CDGN is sourced from the original manufacturer or authorized distributors?
All THS4150CDGN 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 THS4150CDGN meets industry standards.
7.What is the process for return or replacement of THS4150CDGN?
All THS4150CDGN units undergo pre-shipment inspection (PSI). If there is an issue with THS4150CDGN, 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 THS4150CDGN part is unused and in its original packaging.
Return procedure for THS4150CDGN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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