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Texas Instruments THS4022CD
- Part No.:
- THS4022CD
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
THS4022CD.pdf
- Description:
- IC VOLTAGE FEEDBACK 2 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,155
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Product details
Overview
THS4022CD from Texas Instruments is a dual-channel, ultra-low-noise (1.2nV/√Hz), high-speed voltage-feedback operational amplifier optimized for gain ≥10V/V stable operation, delivering 290MHz closed-loop bandwidth, 470V/μs slew rate, and 30ns 0.1% settling time at ±15V supply - used in ultrasound scanner front-ends and source measurement units requiring precision wideband signal conditioning.
For engineers reviewing the THS4022CD datasheet, THS4022CD pinout, THS4022CD application, or THS4022CD equivalent, key selection criteria include its dual-channel HVSSOP-8 package, ±4.5V to ±16V dual-supply support, 200mA output drive capability, –68dBc THD at 1MHz, and guaranteed stability at gains ≥10V/V without external compensation.
Technical Context
The THS4022CD employs a voltage-feedback architecture with fully differential input stage and Class-AB output stage, enabling high slew rate and low distortion across wide supply ranges. Its internal compensation ensures unconditional stability at closed-loop gains ≥10V/V and ≤–9V/V, eliminating need for external compensation networks in standard gain configurations.
Designed for demanding analog signal chains, it features matched dual channels with <–54dBc crosstalk at 1MHz, independent power supply pins per channel, and rail-to-rail output swing limited only by load and supply conditions - supporting high-fidelity amplification in multi-channel acquisition systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 2 GHz - enables stable closed-loop designs up to 290 MHz at G = 10, critical for ultrasound RF signal paths. |
| Voltage noise density | 1.2 nV/√Hz - sets fundamental SNR floor in low-level signal amplification (e.g., transducer preamps). |
| Slew rate | 470 V/μs - supports fast transient response in pulse-based SMU and power quality meter sampling stages. |
| Settling time (0.1%) | 30 ns - ensures accurate digitization of high-speed step signals without aperture error in ADC driver applications. |
| Output current (per channel) | 200 mA - drives low-impedance loads (e.g., 150Ω cables, active filters) without gain compression or thermal shutdown. |
| Total harmonic distortion | –68 dBc @ 1 MHz - preserves spectral purity in communication and imaging baseband processing. |
| Supply voltage range | ±4.5 V to ±16 V - accommodates both portable (±5V) and industrial (±15V) system power rails. |
Pinout & Package
THS4022CD is housed in an 8-pin HVSSOP (DGN) package with exposed thermal pad, optimized for high-frequency layout and thermal dissipation in dense PCB environments. Pin numbering follows standard top-view orientation with pin 1 marked by beveled corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Channel 1 output | Low-impedance buffered output node; requires local decoupling and controlled-impedance routing for >100MHz performance. |
| 1IN– | Channel 1 inverting input | Differential input terminal; matched trace length required vs 1IN+ to minimize common-mode rejection degradation. |
| 1IN+ | Channel 1 noninverting input | Differential input terminal; sensitive to parasitic capacitance - keep stubs & vias minimal. |
| VCC– | Negative supply rail | Return path for both channels; must connect to low-inductance ground plane via multiple vias near device. |
| 2IN+ | Channel 2 noninverting input | Independent high-impedance input; electrically isolated from Channel 1 except through shared supply and substrate. |
| 2IN– | Channel 2 inverting input | Matched pair with 2IN+; crosstalk to Channel 1 is –54dBc at 1MHz - sufficient for most dual-path applications. |
| 2OUT | Channel 2 output | Separate output drive path; allows independent loading and termination without affecting Channel 1 performance. |
| VCC+ | Positive supply rail | Primary power input; requires 0.1μF ceramic + 4.7μF tantalum decoupling per rail, placed within 3mm of pins 1 and 8. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low input voltage noise | 1.2 nV/√Hz enables detection of microvolt-level signals in medical ultrasound transducers without added noise floor. |
| Stable at G ≥ 10 V/V | No external compensation needed for gain-of-10 configurations - reduces BOM count and layout complexity in fixed-gain stages. |
| Dual-channel isolation | –54 dBc crosstalk at 1 MHz ensures independent signal paths for simultaneous sampling in dual-channel SMUs or I/Q demodulators. |
| High output drive | 200 mA per channel drives 150Ω coaxial cables directly, eliminating need for external buffer stages in test equipment outputs. |
| Wide supply range | ±4.5 V to ±16 V operation supports both battery-powered handheld instruments and rack-mounted industrial analyzers. |
Applications
| Ultrasound Scanner Front-End | Source Measurement Unit (SMU) |
|---|---|
Use Scenario: Amplifying weak RF echo signals from piezoelectric transducers before ADC sampling. IC Role / Device Role / Timing Role: Low-noise, wideband gain stage operating at 5–15 MHz center frequency with precise amplitude fidelity. Use Value: 1.2nV/√Hz input noise preserves SNR in sub-millimeter tissue resolution; 30ns settling enables high-frame-rate B-mode imaging. |
Use Scenario: Precision voltage/current sourcing and sensing in semiconductor parametric testers. IC Role / Device Role / Timing Role: Dual-channel feedback amplifier for force-and-measure loops with synchronized sourcing/sensing paths. Use Value: Matched dual channels reduce calibration drift; –68dBc THD ensures accurate harmonic analysis of DUT nonlinearities. |
| Power Quality Meter Signal Chain | High-Speed Data Acquisition Driver |
Use Scenario: Conditioning 50/60 Hz fundamental and harmonic content up to 3 kHz in grid monitoring systems. IC Role / Device Role / Timing Role: Anti-aliasing filter driver and programmable gain stage preceding sigma-delta ADC. Use Value: ±16V supply headroom supports ±10V input ranges; 290MHz bandwidth prevents phase shift in harmonic-rich waveforms. |
Use Scenario: Driving 12–16-bit ADC inputs in modular digitizers requiring >10 MSPS sample rates. IC Role / Device Role / Timing Role: High-fidelity buffer with low distortion and fast settling to minimize aperture uncertainty. Use Value: 470 V/μs slew rate supports full-scale steps without slewing-induced distortion; 30ns 0.1% settling aligns with 33+ MSPS timing budgets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH6629MA/NOPB | Lower noise (0.92nV/√Hz), but unstable below G = 25V/V; requires external compensation for G = 10. | Better for ultra-low-noise single-channel designs where gain ≥25 is acceptable; not drop-in for THS4022CD's G ≥10 use cases. | Select when absolute minimum noise dominates over gain flexibility and board space. |
| OPA2691IDGKT | Higher slew rate (5000 V/μs), but higher noise (2.1nV/√Hz); stable only at G ≥ 5V/V. | Suitable for pulse-amplification applications needing extreme speed, but less optimal for precision low-noise imaging front-ends. | Prefer when transient fidelity outweighs noise floor requirements, e.g., laser pulse shaping. |
Compared with LMH6629MA/NOPB and OPA2691IDGKT, THS4022CD uniquely balances ultra-low noise, guaranteed G ≥10 stability, and dual-channel integration - making it the only option among the three that eliminates compensation design effort while maintaining medical-grade SNR.
Availability
THS4022CD is available at Aetrix Electronics and suitable for ultrasound scanner front-ends, source measurement units, and power quality meters requiring stable component supply, long-term manufacturability, and TI-qualified production lots.
Supply support for THS4022CD 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 op-amps and precision signal chain solutions.
The THS402x family was engineered specifically for wideband, low-noise instrumentation applications - targeting medical imaging, automated test equipment, and high-fidelity data acquisition where noise, speed, and stability must coexist.
FAQ
What is the minimum stable gain for THS4022CD?
The THS4022CD is unconditionally stable at closed-loop gains ≥10V/V and ≤–9V/V, as confirmed in the datasheet's stability section. No external compensation is required in these configurations, simplifying design for fixed-gain applications like ultrasound receiver chains and precision SMU feedback loops. This gain constraint is inherent to its internal compensation network and must be respected to avoid oscillation.
Does THS4022CD support single-supply operation?
Yes, THS4022CD supports single-supply operation from 9V to 33V, with recommended common-mode input voltage and output swing specifications defined for such configurations. When operated on single supply, proper level-shifting of input signals and biasing of the noninverting input is required to maintain linearity - the device itself does not include internal charge pumps or rail-splitting circuitry.
What is the thermal resistance (RθJA) of THS4022CD in its HVSSOP-8 package?
The THS4022CD in the DGN (HVSSOP-8) package has a junction-to-ambient thermal resistance (RθJA) of 52°C/W under standard JEDEC test conditions. This value assumes a 2-layer PCB with 1 in² copper pour connected to the exposed thermal pad - actual thermal performance improves significantly with enhanced heatsinking or multilayer board designs incorporating internal ground/power planes.
How does THS4022CD handle crosstalk between its two amplifier channels?
THS4022CD specifies –54dBc channel-to-channel crosstalk at 1MHz, measured under standard conditions (VCC = ±5V or ±15V). This isolation level is achieved through careful die layout and shared-supply filtering, making it suitable for dual-path applications like I/Q demodulation or differential signal generation where inter-channel interference must remain below –50dB.
Can THS4022CD drive a 50Ω load directly?
THS4022CD can deliver up to 200mA per channel, enabling direct driving of 50Ω loads at ±15V supplies (±10V swing into 50Ω = 200mA). However, sustained operation into 50Ω may exceed thermal limits without adequate PCB copper area or airflow; for continuous 50Ω driving, thermal derating and output current limiting should be verified per the Absolute Maximum Ratings table.
THS4022CD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 470V/µs
- Gain Bandwidth Product:
- 350 MHz
- -3db Bandwidth:
- 350 MHz
- Current - Input Bias:
- 3 µA
- Voltage - Input Offset:
- 500 µV
- Current - Supply:
- 7.8mA (x2 Channels)
- Current - Output / Channel:
- 100 mA
- Voltage - Supply Span (Min):
- 9 V
- Voltage - Supply Span (Max):
- 32 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
THS4022CD FAQ
1.How can I place an order for THS4022CD through Aetrix?
Please submit a Request for Quotation (RFQ) for THS4022CD 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 THS4022CD reliable?
The price and inventory of THS4022CD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS4022CD is usually 5 days.
3.What payment methods are accepted for THS4022CD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS4022CD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS4022CD?
THS4022CD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS4022CD 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 THS4022CD?
For technical support, including THS4022CD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS4022CD requirements.
6.How does Aetrix verify that THS4022CD is sourced from the original manufacturer or authorized distributors?
All THS4022CD 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 THS4022CD meets industry standards.
7.What is the process for return or replacement of THS4022CD?
All THS4022CD units undergo pre-shipment inspection (PSI). If there is an issue with THS4022CD, 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 THS4022CD part is unused and in its original packaging.
Return procedure for THS4022CD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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