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Texas Instruments THS4150ID
- Part No.:
- THS4150ID
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
THS4150ID.pdf
- Description:
- IC OPAMP DIFF 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,609
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Product details
Overview
THS4150ID from Texas Instruments is a high-speed fully differential amplifier optimized for ADC driver, antialiasing, and differential signal conditioning in precision data acquisition systems. It delivers 150 MHz –3 dB bandwidth (VCC = ±5 V), 650 V/µs slew rate (VCC = ±15 V), –83 dB total harmonic distortion at 1 MHz, 7.6 nV/√Hz input-referred voltage noise, and operates from ±2.5 V to ±15 V dual supply or 5 V single supply.
For engineers reviewing the THS4150ID datasheet, THS4150ID pinout, THS4150ID application, or THS4150ID equivalent, this page provides verified circuit role, validated pin functions, confirmed thermal and distortion performance across temperature, and two rigorously cross-checked alternative parts for differential ADC interface designs requiring low THD, wide bandwidth, and balanced output drive.
Technical Context
The THS4150ID implements a true fully differential signal path from input to output using TI's BiComI complementary bipolar process, enabling inherent common-mode noise rejection and second-harmonic cancellation. Its VOCM pin sets output common-mode level with high bandwidth and supports midrail default when unconnected.
It features shutdown functionality (ICC(SD) = 1.3 mA max at TA = 25°C), balanced differential outputs with 0.4 Ω open-loop output resistance, and operates across –40°C to +85°C industrial temperature range. Input common-mode range extends from VS– +1.5 V to VS+ –1.5 V, supporting flexible single- or dual-supply configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bandwidth (–3 dB) | 150 MHz at ±5 V supply - enables baseband signal conditioning up to ~75 MHz Nyquist zone for high-speed ADCs. |
| Slew Rate | 650 V/µs at ±15 V - supports fast transient response for 12–16-bit ADC drivers without slewing-induced distortion. |
| Total Harmonic Distortion | –83 dB at 1 MHz, VO = 2 VPP - ensures minimal spectral contamination in precision measurement front-ends. |
| Input Voltage Noise | 7.6 nV/√Hz above 10 kHz - preserves SNR in wideband sensor and instrumentation signal chains. |
| Supply Range | ±2.5 V to ±15 V dual or 5 V single supply - accommodates legacy ±5 V, modern ±12 V, and low-voltage 5 V systems. |
| Shutdown Current | 1.3 mA max at TA = 25°C - enables power-gating in battery-powered or thermally constrained applications. |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded data acquisition and test equipment. |
Pinout & Package
The THS4150ID is available in SOIC-8 (D) package with exposed PowerPAD™ thermal pad. Pinout matches THS4150CD/THS4150IDGN/DGK variants per TI SLOS321G datasheet Figure 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN− | Inverting input | Differential input node; paired with VIN+ to define VID = VIN+ − VIN−; requires matched external feedback network. |
| VOCM | Output common-mode control | Sets DC level of both outputs; defaults to midrail if floating; bypass with 0.1 µF capacitor for noise immunity. |
| VCC+ | Positive supply rail | Accepts +2.5 V to +15 V in dual supply or +5 V in single supply; connects to thermal pad via PCB copper pour. |
| VOUT+ | Positive differential output | Delivers amplified, phase-inverted replica of VIN− relative to VOCM; drives one leg of differential ADC input. |
| VIN+ | Non-inverting input | Differential input node; defines common-mode input range VIC = (VIN+ + VIN−)/2; must stay within VS− +1.5 V to VS+ −1.5 V. |
| PD | Power-down control | Active-low shutdown enable; pulls output to high-impedance state (ro = 636 Ω); ICC drops to ≤1.3 mA. |
| VCC− | Negative supply rail | Accepts –2.5 V to –15 V in dual supply; tied to GND in single-supply mode; critical for thermal dissipation via PowerPAD™. |
| VOUT− | Negative differential output | Delivers amplified, phase-inverted replica of VIN+ relative to VOCM; complements VOUT+ for balanced ADC interface. |
Key Features
| Feature | Design Value |
|---|---|
| Fully differential I/O architecture | Rejects common-mode noise on both inputs and outputs, improving PSRR and CMRR beyond single-ended amplifiers. |
| 150 MHz small-signal bandwidth | Supports >75 MSPS ADC sampling with minimal gain roll-off in antialiasing filter passband. |
| –83 dB THD at 1 MHz | Minimizes harmonic folding into ADC Nyquist band, preserving dynamic range in precision digitization. |
| Shutdown mode (ICC ≤ 1.3 mA) | Reduces system power by >90% during idle cycles in portable or multi-channel DAQ systems. |
| VOCM-controlled output level shifting | Enables seamless interfacing to ADCs with varying reference voltages (e.g., AVDD/2 or external Vref). |
Applications
| ADC Driver | Differential Antialiasing |
|---|---|
|
Use Scenario: Driving the differential input of a 14-bit, 100-MSPS SAR or pipeline ADC in an automated test equipment front-end. IC Role / Device Role / Timing Role: Single-ended-to-differential converter and gain stage that sets input common-mode voltage via VOCM while rejecting supply noise. Use Value: Eliminates need for RF transformers; maintains –83 dB THD up to 1 MHz to prevent harmonic aliasing into first Nyquist zone. |
Use Scenario: Active low-pass filtering before a 16-bit sigma-delta ADC in precision weigh scale or strain gauge readout. IC Role / Device Role / Timing Role: Integrates into 2nd-order active antialias filter (e.g., MFB topology) with matched R/C networks on VIN+/VIN−. Use Value: Provides 150 MHz bandwidth headroom for filter design; differential output rejects EMI coupling into ADC input traces. |
| Differential Transmitter | Output Level Shifter |
|
Use Scenario: Transmitting analog sensor signals over twisted-pair cables in industrial PLC I/O modules. IC Role / Device Role / Timing Role: Converts single-ended sensor output to balanced differential signal with controlled common-mode offset (VOCM). Use Value: Achieves >60 dB common-mode rejection over 10 MHz bandwidth, suppressing ground loop noise in long cable runs. |
Use Scenario: Adapting output voltage swing of a ±10 V DAC to match ±2.5 V full-scale input of a downstream differential ADC. IC Role / Device Role / Timing Role: Attenuates and level-shifts DAC output using resistor feedback network while maintaining differential balance. Use Value: Uses VOCM pin to precisely set output common-mode to AVDD/2, eliminating DC blocking capacitors and preserving low-frequency response. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fully differential amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| THS4131ID | 150 MHz BW, 51 V/µs SR, 1.3 nV/√Hz noise - lower noise but slower slew rate than THS4150ID. | Better for low-noise, moderate-speed applications (e.g., audio ADCs); less suitable for fast transient ADC drivers. | Select THS4131ID when input-referred noise < 2 nV/√Hz is prioritized over slew-limited settling time. |
| THS4141ID | 160 MHz BW, 450 V/µs SR, 6.5 nV/√Hz noise - higher bandwidth and slew rate, but higher noise than THS4150ID. | Better for >100 MSPS ADCs requiring faster settling; increased noise may impact SNR in low-level sensor interfaces. | Select THS4141ID when bandwidth >150 MHz and sub-100 ns settling are critical, and noise floor permits. |
Compared with THS4150ID, THS4131ID trades slew rate for lower noise, making it preferable in static-precision applications, while THS4141ID extends bandwidth and slew at the cost of higher voltage noise-ideal for speed-critical, wide-dynamic-range systems where THS4150ID's balanced 150 MHz/650 V/µs/7.6 nV/√Hz profile is insufficient.
Availability
THS4150ID is available at Aetrix Electronics and suitable for industrial data acquisition, test & measurement equipment, and precision ADC interface designs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for THS4150ID 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 precision amplifiers and data converter interfaces.
The THS4150ID belongs to TI's High-Speed Differential I/O Amplifier family, designed specifically for driving differential-input ADCs, replacing transformers in signal chains, and enabling robust noise-immune analog transmission in industrial and instrumentation systems.
FAQ
What is the operating temperature range of the THS4150ID?
The THS4150ID is rated for industrial operation from –40°C to +85°C, as indicated by its "I" suffix. This range is validated per TI SLOS321G datasheet Section 6.1 (Recommended Operating Conditions), ensuring guaranteed performance including –83 dB THD, 150 MHz bandwidth, and proper shutdown behavior across the full span without derating.
Does the THS4150ID require external resistors for gain configuration?
Yes, the THS4150ID requires external matched resistors to set gain and maintain balance. Per TI SLOS321G datasheet Section 17.2, gain is determined by A = Rf/R(g), with recommended values like Rf = 390 Ω and R(g) = 390 Ω for unity gain. Resistor matching (≤1% tolerance) is mandatory to preserve CMRR, PSRR, and harmonic distortion performance.
How does the VOCM pin function in the THS4150ID?
The VOCM pin in the THS4150ID directly sets the common-mode voltage of both differential outputs (VOUT+ and VOUT−). When left unconnected, it defaults to midrail (e.g., VCC/2 in single supply). TI recommends bypassing VOCM with a 0.1 µF capacitor to ground to suppress noise coupling, as specified in the Application Information section of the THS4150ID datasheet.
Can the THS4150ID drive heavy capacitive loads directly?
No - the THS4150ID is internally compensated for maximum bandwidth and slew rate, making it sensitive to capacitive loading. As stated in TI SLOS321G Figure 34 and related text, a series resistor (≥20 Ω) must be placed between each output and capacitive load >10 pF to maintain stability and prevent ringing or oscillation.
What is the shutdown current specification for the THS4150ID?
The THS4150ID draws ≤1.3 mA quiescent current in shutdown mode at TA = 25°C, per Electrical Characteristics table (Section 7.5, ICC(SD)). This value increases to ≤1.5 mA across the full –40°C to +85°C range. Shutdown is activated by pulling the PD pin low, placing outputs in high-impedance state with ro(SD) = 636 Ω.
THS4150ID Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- 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:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
THS4150ID FAQ
1.How can I place an order for THS4150ID through Aetrix?
Please submit a Request for Quotation (RFQ) for THS4150ID 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 THS4150ID reliable?
The price and inventory of THS4150ID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS4150ID is usually 5 days.
3.What payment methods are accepted for THS4150ID?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS4150ID transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS4150ID?
THS4150ID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS4150ID 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 THS4150ID?
For technical support, including THS4150ID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS4150ID requirements.
6.How does Aetrix verify that THS4150ID is sourced from the original manufacturer or authorized distributors?
All THS4150ID 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 THS4150ID meets industry standards.
7.What is the process for return or replacement of THS4150ID?
All THS4150ID units undergo pre-shipment inspection (PSI). If there is an issue with THS4150ID, 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 THS4150ID part is unused and in its original packaging.
Return procedure for THS4150ID:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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