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Texas Instruments THS4222DGKR
- Part No.:
- THS4222DGKR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
THS4222DGKR.pdf
- Description:
- IC OPAMP VFB 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,801
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Product details
Overview
THS4222DGKR from Texas Instruments is a dual, rail-to-rail output, voltage-feedback operational amplifier optimized for high-speed, low-distortion signal conditioning in data converter interfaces and video systems. It delivers 230 MHz bandwidth (G=1), 975 V/µs slew rate, −90 dBc HD2 and −100 dBc HD3 at 5 MHz (RL = 499 Ω), and ±4.8 V output swing into 2 kΩ on ±5 V supplies.
For engineers reviewing the THS4222DGKR datasheet, THS4222DGKR pinout, THS4222DGKR application, or THS4222DGKR equivalent, this page provides verified electrical specifications, DGK package terminal mapping, dual-channel video/ADC driver use cases, and validated alternative options for low-voltage, high-fidelity analog signal paths.
Technical Context
The THS4222DGKR implements a voltage-feedback architecture with complementary bipolar input stage and rail-to-rail Class-AB output stage, enabling stable unity-gain operation and minimal phase nonlinearity across 230 MHz bandwidth. Its differential input resistance is 33 MΩ, with 1 pF common-mode and 0.5 pF differential input capacitance.
It supports single-supply operation from 3 V to 15 V and dual-supply operation from ±1.35 V to ±7.5 V, maintaining 40 MHz 0.1 dB flat bandwidth (G=2) and 0.007% differential gain/0.007° differential phase in NTSC/PAL video applications with 150 Ω load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-signal BW (G=1) | 230 MHz - enables baseband signal amplification up to UHF without gain peaking or instability |
| Slew rate | 975 V/µs - supports full-scale transient response for 12-bit+ ADC drivers at >10 MSPS |
| HD2 / HD3 @ 5 MHz | −90 dBc / −100 dBc - preserves SFDR >90 dB in wideband receiver front ends |
| Rail-to-rail output swing | ±4.8 V into 2 kΩ - maximizes dynamic range when driving SAR or pipeline ADC references |
| Quiescent current | 14 mA per channel - balances speed and power for portable instrumentation and imaging systems |
| Input voltage noise | 13 nV/√Hz @ 1 MHz - limits contribution to system noise floor in precision sensor interfaces |
| Common-mode range | VS− +1.1 V to VS+ −1.1 V - accommodates DC-coupled inputs in single-supply 3.3 V or 5 V systems |
Pinout & Package
DGK package: 8-pin MSOP PowerPAD™ thermally enhanced surface-mount package with exposed thermal pad (pin 8) requiring PCB copper connection for junction temperature control below 125°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Channel 1 output | Delivers rail-to-rail amplified signal; requires local 0.1 µF decoupling to VS−/VS+ |
| 1IN− | Channel 1 inverting input | High-impedance node (33 MΩ); matched impedance routing critical for video/RF stability |
| 1IN+ | Channel 1 non-inverting input | DC-bias reference point in single-supply configurations; 1 pF input capacitance affects HF compensation |
| VS− | Negative supply rail | Return path for both channels; must be low-inductance plane adjacent to PowerPAD |
| VS+ | Positive supply rail | Primary power source; decoupling with 0.1 µF ceramic + 6.8 µF tantalum recommended |
| 2OUT | Channel 2 output | Independent output stage; crosstalk <−90 dB at 5 MHz enables dual-path signal processing |
| 2IN− | Channel 2 inverting input | Electrically isolated from Channel 1; layout separation minimizes inter-channel coupling |
| 2IN+ | Channel 2 non-inverting input | Same input structure as 1IN+; enables synchronous dual-channel gain matching |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Enables full utilization of ADC input range without level-shifting circuitry in 3.3 V/5 V systems |
| Ultra-low harmonic distortion | Preserves spectral purity in IF sampling receivers and high-resolution video digitization paths |
| 40 MHz 0.1 dB flat bandwidth (G=2) | Meets SMPTE 259M SD-SDI rise/fall time requirements for broadcast-quality video distribution |
| Thermally enhanced PowerPAD | Reduces θJA to 260°C/W (DGK), allowing 385 mW power dissipation at TA ≤25°C with proper PCB layout |
| Single-supply operation down to 3 V | Supports battery-powered portable test equipment and medical ultrasound front ends |
Applications
| ADC Driver Interface | Video Signal Conditioning |
|---|---|
Use Scenario: Driving the analog input of a 12-bit, 40 MSPS pipeline ADC in a software-defined radio receiver. IC Role / Device Role / Timing Role: High-fidelity buffer and gain stage between RF demodulator and ADC, preserving SNR and SFDR. Use Value: 230 MHz bandwidth and −100 dBc HD3 ensure >72 dB ENOB at Nyquist, minimizing post-processing correction. | Use Scenario: Amplifying composite NTSC video signals prior to digitization in security camera DVR systems. IC Role / Device Role / Timing Role: Line driver with precise gain and phase fidelity for standard-definition analog video distribution. Use Value: 0.007% differential gain and 0.007° differential phase meet SMPTE RP 168 compliance for broadcast-grade video. |
| Active Filter Stage | Low-Voltage Instrumentation |
Use Scenario: Implementing a 5th-order Butterworth anti-aliasing filter preceding a 16-bit sigma-delta ADC in industrial sensor nodes. IC Role / Device Role / Timing Role: High-speed, low-noise active filter section with programmable cutoff frequency up to 25 MHz. Use Value: 13 nV/√Hz input voltage noise and 25 MHz small-signal bandwidth (G=5) maintain >100 dB dynamic range. | Use Scenario: Signal conditioning for MEMS accelerometer outputs in handheld diagnostic devices powered by 3.3 V Li-ion batteries. IC Role / Device Role / Timing Role: Low-power, rail-to-rail I/O amplifier enabling direct interface to 3.3 V microcontroller ADCs. Use Value: 11–17 mA quiescent current per channel and 3 V minimum supply support >10-hour battery life in continuous monitoring mode. |
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 |
|---|---|---|---|
| THS4226DGQ | Dual-channel with integrated power-down control pins (1PD/2PD); same AC performance but adds enable functionality | Required where dynamic power gating is needed in battery-operated or burst-mode systems | Select THS4226DGQ if power-down sequencing and <500 ns turnoff delay are mandatory; THS4222DGKR lacks PD pins and draws constant 14 mA/ch |
| OPA2691IDGKT | Higher 500 MHz bandwidth, 1800 V/µs slew rate, but higher 22 mA/ch quiescent current and no rail-to-rail output | Suitable for >100 MHz IF amplification where output swing >±3.5 V is acceptable | Choose OPA2691IDGKT only when bandwidth >300 MHz is required and rail-to-rail output is not critical; THS4222DGKR offers superior DC-coupled flexibility |
Compared with THS4226DGQ, THS4222DGKR provides identical AC specs without power management overhead-ideal for always-on signal chains. Versus OPA2691IDGKT, it trades bandwidth for lower power, rail-to-rail output, and better video fidelity metrics, making it preferable for DC-coupled ADC drivers and broadcast video.
Availability
THS4222DGKR is available at Aetrix Electronics and suitable for high-speed data acquisition, broadcast video infrastructure, active filtering, and low-voltage instrumentation requiring stable component supply across industrial temperature ranges (−40°C to +85°C).
Supply support for THS4222DGKR 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 over 50 years of innovation in high-performance amplifiers and data converter interfaces.
The THS4222DGKR belongs to TI's THS422x family of rail-to-rail output, low-distortion op-amps designed specifically for driving high-resolution ADCs, video line drivers, and wideband active filters in space-constrained, thermally demanding applications.
FAQ
What is the maximum supply voltage rating for THS4222DGKR?
The absolute maximum supply voltage for THS4222DGKR is ±8.25 V (dual supply) or 16.5 V (single supply), though the recommended operating range is ±1.35 V to ±7.5 V or 2.7 V to 15 V. Operation beyond ±7.5 V or 15 V risks permanent damage per TI SLOS399G Absolute Maximum Ratings table.
Does THS4222DGKR support true single-supply operation with input signals near ground?
Yes, THS4222DGKR supports single-supply operation from 3 V to 15 V, with an input common-mode range extending from VS− +1.1 V to VS+ −1.1 V. At VS = 3.3 V, this allows input signals from 1.15 V to 2.15 V; for ground-referenced signals, external biasing (e.g., VREF = VS/2) is required at the non-inverting input.
What is the thermal design requirement for THS4222DGKR in the DGK package?
The DGK package incorporates a PowerPAD™ thermal pad (pin 8) that must be soldered to a dedicated PCB copper pour connected to VS− for effective heat dissipation. Without this, θJA rises to 260°C/W, limiting usable power to 154 mW at 85°C ambient-TI SLMA002/SLMA004 mandate thermal pad connection to avoid junction temperatures exceeding 125°C.
How does THS4222DGKR compare to THS4226DGQ in pin compatibility and function?
THS4222DGKR (DGK) and THS4226DGQ (DGQ) are not pin-compatible: THS4222DGKR has 8 pins (1OUT, 1IN−, 1IN+, VS−, VS+, 2OUT, 2IN−, 2IN+) while THS4226DGQ has 10 pins with dedicated power-down inputs (1PD, 2PD). Both share identical AC/DC performance specs, but THS4226DGQ adds enable control absent in THS4222DGKR.
Can THS4222DGKR drive a 150 Ω video load while maintaining SMPTE compliance?
Yes-THS4222DGKR achieves 0.007% differential gain and 0.007° differential phase into 150 Ω loads at G = 2, meeting SMPTE RP 168 requirements for SD-SDI video transmission. Its 100 mA output drive capability ensures stable 1 Vpp signal delivery across multiple 150 Ω terminations without gain droop or timing skew.
THS4222DGKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 990V/µs
- Gain Bandwidth Product:
- 120 MHz
- -3db Bandwidth:
- 230 MHz
- Current - Input Bias:
- 900 nA
- Voltage - Input Offset:
- 3 mV
- Current - Supply:
- 14mA (x2 Channels)
- Current - Output / Channel:
- 100 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 15 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
THS4222DGKR FAQ
1.How can I place an order for THS4222DGKR through Aetrix?
Please submit a Request for Quotation (RFQ) for THS4222DGKR 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 THS4222DGKR reliable?
The price and inventory of THS4222DGKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS4222DGKR is usually 5 days.
3.What payment methods are accepted for THS4222DGKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS4222DGKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS4222DGKR?
THS4222DGKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS4222DGKR 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 THS4222DGKR?
For technical support, including THS4222DGKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS4222DGKR requirements.
6.How does Aetrix verify that THS4222DGKR is sourced from the original manufacturer or authorized distributors?
All THS4222DGKR 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 THS4222DGKR meets industry standards.
7.What is the process for return or replacement of THS4222DGKR?
All THS4222DGKR units undergo pre-shipment inspection (PSI). If there is an issue with THS4222DGKR, 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 THS4222DGKR part is unused and in its original packaging.
Return procedure for THS4222DGKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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