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Texas Instruments THS4150CD
- Part No.:
- THS4150CD
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
THS4150CD.pdf
- Description:
- IC OPAMP DIFF 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,057
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Product details
Overview
THS4150CD from Texas Instruments is a high-speed fully differential amplifier optimized for ADC driver, antialiasing, and differential signal transmission applications. It delivers 150 MHz –3 dB bandwidth at ±5 V supply, 650 V/µs slew rate at ±15 V, –83 dB total harmonic distortion at 1 MHz, 7.6 nV/√Hz input-referred voltage noise, and supports dual-supply (±2.5 V to ±15 V) or single-supply (5 V to 30 V) operation in precision data acquisition systems.
For engineers reviewing the THS4150CD datasheet, THS4150CD pinout, THS4150CD application, or THS4150CD equivalent, key selection criteria include differential output swing (±3.6 V at ±5 V), shutdown current (1.3 mA), VOCM-controlled common-mode level setting, and resistor-matched gain configuration for CMRR preservation in high-fidelity analog front-ends.
Technical Context
The THS4150CD implements a true fully differential signal path from input to output using TI's BiComI complementary bipolar process, enabling balanced output rejection of common-mode noise and intrinsic reduction of 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 ratios.
Operation requires matched feedback and gain-setting resistors (e.g., 390 Ω/390 Ω for unity gain) to preserve CMRR, PSRR, and harmonic cancellation. The VOCM pin sets output common-mode voltage-internally biased to midrail when floating-and must be bypassed with a 0.1 µF capacitor to suppress noise coupling into the output stage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| –3 dB Bandwidth | 150 MHz at ±5 V supply - enables wideband signal conditioning up to UHF frequencies without gain peaking or phase degradation |
| Slew Rate | 650 V/µs at ±15 V - supports fast transient response for high-resolution, high-speed ADC sampling without slewing-induced distortion |
| Total Harmonic Distortion | –83 dB at 1 MHz, 2 Vpp output - ensures minimal spectral contamination in precision digitization paths |
| Input Voltage Noise | 7.6 nV/√Hz above 10 kHz - maintains SNR integrity in low-level sensor signal amplification stages |
| Supply Range | ±2.5 V to ±15 V dual or 5 V to 30 V single - accommodates legacy industrial rails and modern low-voltage mixed-signal systems |
| Shutdown Current | 1.3 mA at ±5 V - reduces system power during idle cycles while retaining fast wake-up capability |
| Output Swing | ±3.6 V at ±5 V supply into 800 Ω - delivers full-scale differential drive for 12–16-bit SAR and sigma-delta ADCs |
Pinout & Package
The THS4150CD is housed in an 8-pin SOIC (D) package with exposed PowerPAD™ thermal pad on the underside, requiring connection to a PCB copper plane for thermal management per TI SLMA002/SLMA004 guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN− | Inverting input | Differential input node; paired with VIN+ to define VID = VIN+ − VIN−; requires matched trace routing and impedance control |
| VOCM | Output common-mode voltage control | Sets DC level of both outputs; floating default = VCC/2; must be bypassed with 0.1 µF capacitor to ground for stability |
| VCC+ | Positive supply rail | Accepts +2.5 V to +15 V (dual) or +5 V to +30 V (single); decoupling required within 1 cm of pin |
| 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; paired with VIN−; symmetry critical for CMRR >75 dB across temperature |
| PD | Power-down control | Active-low logic input; pulls output to high-impedance state (636 Ω) and reduces ICC to 1.3 mA when asserted |
| VCC− | Negative supply rail | Accepts −2.5 V to −15 V (dual); tied to GND in single-supply mode; requires local decoupling |
| VOUT− | Negative differential output | Delivers amplified, phase-inverted replica of VIN+ relative to VOCM; complements VOUT+ for noise-rejecting signal transfer |
Key Features
| Feature | Design Value |
|---|---|
| Fully differential I/O architecture | Enables true differential signaling end-to-end, rejecting coupled noise at input, output, and power supply nodes |
| Resistor-matched gain configuration | Supports precise gain accuracy (e.g., 1×, 2×, 5×, 10×) via external Rf/Rg networks with 1% tolerance recommended |
| VOCM-controlled common-mode level | Allows dynamic adjustment of output DC offset independent of signal path, essential for interfacing with varying ADC reference levels |
| Internal compensation for capacitive loads | Stable operation with ≥20 Ω series output isolation resistor, enabling direct driving of 50 Ω transmission lines or ADC input capacitance |
| BiComI bipolar process technology | Delivers high slew rate (650 V/µs), low distortion (–83 dB THD), and wide bandwidth (150 MHz) simultaneously |
Applications
| ADC Driver | Differential Antialiasing |
|---|---|
Use Scenario: Driving the differential input of a 14-bit, 10 MSPS SAR ADC in a medical ECG front-end where input signals range from 10 µV to 5 mV. IC Role / Device Role / Timing Role: Fully differential amplifier configured as single-ended-to-differential converter with gain = 2, VOCM referenced to ADC's internal VREF/2. Use Value: Eliminates need for external transformer or discrete op-amp pairs, reduces board area by 40%, and improves SNR by 3.2 dB versus single-ended alternatives due to common-mode noise rejection. | Use Scenario: Active low-pass filtering ahead of a 16-bit sigma-delta ADC sampling at 250 kSPS in industrial vibration monitoring. IC Role / Device Role / Timing Role: Integrated antialias filter stage using THS4150CD in Sallen-Key topology with R2=R3=1.5 kΩ, C1=C2=1 nF, fc = 100 kHz. Use Value: Achieves >60 dB stopband attenuation at 250 kHz while preserving differential signal integrity and minimizing group delay variation across passband. |
| Differential Transmitter | Output Level Shifter |
Use Scenario: Transmitting baseband I/Q signals from FPGA DAC outputs over 50 Ω coaxial cable to RF mixer in software-defined radio. IC Role / Device Role / Timing Role: Differential line driver with gain = 1, VOCM = 1.25 V, series 20 Ω output resistors for source termination. Use Value: Maintains 100% signal fidelity up to 80 MHz, suppresses even-order harmonics by >25 dB, and prevents reflections due to impedance-matched drive. | Use Scenario: Level-shifting ±2.5 V differential sensor output to match 0–5 V single-ended ADC input range in automotive battery management system. IC Role / Device Role / Timing Role: Differential-to-single-ended translator using VOCM = 2.5 V and VOUT+ only, with VOUT− grounded via 100 Ω resistor. Use Value: Provides rail-to-rail 0–5 V output swing with <0.5 mV offset error, eliminating need for additional op-amp stage and reducing BOM count by one component. |
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 | 150 MHz BW, 51 V/µs SR, 1.3 nV/√Hz noise - lower noise but slower slew rate than THS4150CD | Better suited for low-noise, moderate-speed precision instrumentation; less ideal for fast transient ADC drivers | Select THS4131CDGN when input-referred noise dominates system SNR budget and slew-limited distortion is not critical |
| THS4561IRGET | 1.8 GHz GBW, 5000 V/µs SR, 1.6 nV/√Hz - higher speed, wider supply range (2.7–5.5 V), no shutdown pin | Targets high-speed communication and RF sampling; lacks PD pin and dual-supply flexibility of THS4150CD | Choose THS4561IRGET for >100 MSPS sampling rates or battery-powered designs requiring 3.3 V operation |
Compared with THS4131CDGN and THS4561IRGET, the THS4150CD uniquely balances high slew rate (650 V/µs), wide supply adaptability (±2.5 V to ±15 V), and integrated shutdown functionality-making it optimal for industrial data acquisition where robustness, configurability, and power cycling are essential.
Availability
THS4150CD is available at Aetrix Electronics and suitable for high-speed data acquisition, precision instrumentation, and industrial ADC interface applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for THS4150CD 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 amplifier design and manufacturing.
The THS415x family was engineered specifically for high-fidelity differential signal conditioning in data converter interfaces, emphasizing bandwidth, linearity, and noise performance across industrial, test & measurement, and communications systems.
FAQ
What is the maximum operating temperature range for the THS4150CD?
The THS4150CD is rated for operation from 0°C to 70°C (C-suffix). Its absolute maximum junction temperature is 125°C for continuous reliability, and storage temperature spans –65°C to 150°C. Thermal derating is required above 85°C ambient due to SOIC package thermal resistance (θJA = 97.5°C/W).
Does the THS4150CD support single-supply operation?
Yes, the THS4150CD supports single-supply operation from 5 V to 30 V. When VCC− is tied to ground, VOCM defaults to VCC/2, enabling rail-to-rail differential output swing. Input common-mode range extends from (VCC− +1.5 V) to (VCC+ −1.5 V), so for 5 V supply, VICR is 1.5 V to 3.5 V.
How does the PD pin function on the THS4150CD?
The PD (Power-Down) pin is an active-low control that places THS4150CD into low-power state when pulled below 0.8 V. In shutdown, quiescent current drops to 1.3 mA (at ±5 V), outputs enter high-impedance (636 Ω), and recovery time is ≤1.1 µs. A pull-up resistor to VCC+ is required for normal operation.
What resistor tolerance is recommended for THS4150CD gain networks?
Texas Instruments recommends 1% or better tolerance for all external resistors in THS4150CD feedback (Rf) and gain-setting (Rg) networks. Mismatch >0.1% degrades CMRR, increases second-harmonic distortion, and reduces PSRR-critical for maintaining –83 dB THD performance at 1 MHz.
Can the THS4150CD drive a 50 Ω transmission line directly?
Yes, but only with a 20 Ω series resistor at each output (VOUT+, VOUT−) to isolate capacitive loading and maintain stability. Direct 50 Ω termination causes phase margin loss and potential oscillation due to internal compensation optimized for >800 Ω loads. The 20 Ω resistor also provides source impedance matching for 50 Ω lines.
THS4150CD 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:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
THS4150CD FAQ
1.How can I place an order for THS4150CD through Aetrix?
Please submit a Request for Quotation (RFQ) for THS4150CD 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 THS4150CD reliable?
The price and inventory of THS4150CD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS4150CD is usually 5 days.
3.What payment methods are accepted for THS4150CD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS4150CD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS4150CD?
THS4150CD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS4150CD 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 THS4150CD?
For technical support, including THS4150CD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS4150CD requirements.
6.How does Aetrix verify that THS4150CD is sourced from the original manufacturer or authorized distributors?
All THS4150CD 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 THS4150CD meets industry standards.
7.What is the process for return or replacement of THS4150CD?
All THS4150CD units undergo pre-shipment inspection (PSI). If there is an issue with THS4150CD, 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 THS4150CD part is unused and in its original packaging.
Return procedure for THS4150CD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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