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Texas Instruments THS3217IRGVT
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- Part No.:
- THS3217IRGVT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-VQFN Exposed Pad
- Datasheet:
-
THS3217IRGVT.pdf
- Description:
- IC OPAMP DIFF 1 CIRCUIT 16VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:243
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Product details
Overview
THS3217IRGVT from Texas Instruments is a DC-to-800-MHz, two-stage, differential-to-single-ended DAC output amplifier with buffered differential inputs, internal 2× gain D2S stage, externally configurable output power stage (OPS), SPDT input switch, and integrated midscale reference buffer. It delivers –60 dBc HD2 and –75 dBc HD3 at 20 MHz into 100 Ω while supporting ±4 V to ±7.9 V split or 8 V to 15.8 V single supply. It is used in high-fidelity DAC interface circuits for arbitrary waveform generators and wideband signal synthesis.
For engineers reviewing the THS3217IRGVT datasheet, THS3217IRGVT pinout, THS3217IRGVT application, or THS3217IRGVT equivalent, key selection considerations include its dual-stage architecture enabling flexible gain partitioning (D2S fixed 2 V/V + OPS externally set), 5000 V/µs slew rate, 500-MHz large-signal bandwidth at 5 VPP, SPDT path selection between internal D2S output and external input, and low-distortion operation into capacitive or resistive loads up to 12 VPP.
Technical Context
The THS3217IRGVT implements a cascaded current-feedback architecture: the first stage (D2S) provides buffered differential input conversion with fixed 2-V/V gain and 800-MHz small-signal bandwidth; the second stage (OPS) is a wideband, externally gain-configurable current-feedback amplifier with 950-MHz SSBW and 500-MHz LSBW at 5 VPP. An internal 2×1 SPDT switch routes either the D2S output or an external signal to the OPS noninverting input.
It integrates a low-impedance midscale reference buffer (400-MHz SSBW, 250 V/µs slew rate) for single-supply biasing and supports dc-coupled operation via VREF pin for offset control. The full signal path (D2S + OPS) achieves 5-V/V total gain with –60 dBc HD2 and –75 dBc HD3 at 20 MHz into 100 Ω, and delivers 10-VPP into 100 Ω using ±6.5-V supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bandwidth (SSBW) | 800 MHz - Enables flat frequency response up to UHF for wideband DAC reconstruction and AWG output. |
| Large-signal BW (5 VPP) | 500 MHz - Supports fast transient fidelity for 5-VPP output swings without slew limiting. |
| Slew rate | 5000 V/µs - Ensures sub-nanosecond rise/fall times (1.1 ns) for high-fidelity pulse and step response. |
| HD2 / HD3 (20 MHz, 5 VPP) | –60 dBc / –75 dBc - Delivers low harmonic distortion critical for spectral purity in signal generation. |
| Supply range | ±4 V to ±7.9 V (split) or 8 V to 15.8 V (single) - Allows flexible rail selection for noise, headroom, and power trade-offs. |
| Total quiescent current | 54 mA (±6-V) - Balances high-speed performance with moderate power consumption for active signal chains. |
| Output drive (100 Ω) | 10-VPP (±6.5-V) or 12-VPP (15-V single) - Provides sufficient voltage swing for driving heavy capacitive or resistive loads. |
Pinout & Package
THS3217IRGVT is housed in a 16-pin VQFN package (4.00 mm × 4.00 mm) with exposed thermal pad soldered to GND for optimal thermal performance (RθJB = 22 °C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VMID_IN) | DC reference buffer input | Accepts external DC bias for midscale reference; enables dc error correction loop or offset adjustment. |
| 2 (+IN), 3 (–IN) | Differential input to D2S stage | High-impedance, buffered inputs accepting complementary-current DAC outputs; common-mode range supports 0.25 V VIC. |
| 4 (PATHSEL) | SPDT switch control | Logic-selectable path: low → internal D2S output to OPS; high → external signal to OPS noninverting input. |
| 5, 8 (–VCC2, –VCC1) | Negative supply rails | Separate negative supplies for D2S (–VCC2) and OPS (–VCC1); supports independent rail optimization. |
| 6 (VO1) | D2S stage output | Available external node for direct use, RLC filtering, or attenuation before feeding OPS input. |
| 7 (GND) | Control logic reference | Ground reference for PATHSEL and DISABLE logic thresholds; must be tied to system ground. |
| 9 (VIN+) | External OPS noninverting input | Alternative signal path into OPS when PATHSEL = high; bypasses D2S stage entirely. |
| 10 (DISABLE) | OPS shutdown control | Active-low enable: low → OPS active; high/floating → OPS disabled (2.4 mA standby current). |
| 11 (VOUT) | Final amplified output | Low-impedance, high-current output capable of 120 mA linear drive into 26 Ω or 170 mA peak into short load. |
| 12 (VIN–) | OPS inverting input | Feedback node for external gain-setting network (RF/RG); sets closed-loop gain with internal 18.5-kΩ resistor. |
| 13 (+VCC1), 16 (+VCC2) | Positive supply rails | Separate positive supplies for OPS (+VCC1) and D2S (+VCC2); decoupling required per layout guidelines. |
| 14 (VREF) | D2S offset control input | Directly modulates D2S output dc level with 1-V/V gain; enables precise output offset trimming. |
| 15 (VMID_OUT) | Midscale reference buffer output | Low-Z (0.21 Ω dc), wideband source for biasing ac-coupled stages or setting common-mode levels in single-supply systems. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-stage architecture (D2S + OPS) | Enables modular design: D2S handles DAC termination and differential-to-single-ended conversion; OPS provides scalable gain and drive strength. |
| SPDT input multiplexer | Allows seamless switching between internal D2S output and external signal path without external components-critical for multi-source systems. |
| Integrated midscale reference buffer | Provides stable, low-impedance (0.21 Ω), 400-MHz bandwidth bias source for single-supply operation and dc-coupled signal chains. |
| Configurable gain topology | Fixed 2-V/V D2S gain + externally set OPS gain (e.g., 2.5 V/V via 249-Ω RF/162-Ω RG) yields precise 5-V/V total gain with <±0.5% tolerance. |
| Low-distortion wideband performance | –60 dBc HD2 and –75 dBc HD3 at 20 MHz into 100 Ω ensures spectral integrity for high-resolution waveform generation and communications test equipment. |
| Flexible supply support | Operates from ±4 V to ±7.9 V or 8 V to 15.8 V, enabling compatibility with legacy ±5-V, ±6-V, or modern 12-V/15-V industrial and test systems. |
Applications
| Digital-to-Analog Converter (DAC) Interface | Arbitrary Waveform Generator (AWG) Output Driver |
|---|---|
|
Use Scenario: Interfacing TI's high-speed DACs (e.g., DAC38J82) to reconstruct baseband or IF signals with minimal added distortion and phase shift. IC Role / Device Role / Timing Role: Differential-to-single-ended converter and output driver that terminates DAC current outputs, removes common-mode uncertainty, and amplifies to system-level voltage swing. Use Value: Eliminates need for discrete op-amp + filter + buffer stages; preserves DAC dynamic range with –60 dBc HD2 and 500-MHz bandwidth at 5 VPP. |
Use Scenario: Driving coaxial cables or instrumentation inputs in automated test equipment requiring programmable, low-jitter analog waveforms up to 200 MHz. IC Role / Device Role / Timing Role: Final-stage wideband amplifier delivering fast settling (<7 ns to 0.1%), high slew rate (5000 V/µs), and flat group delay across 100 MHz. Use Value: Enables sub-ns edge fidelity and <0.2-dB gain flatness to 100 MHz, reducing post-processing calibration in AWG signal paths. |
| Predriver for High-Voltage Amplifiers | Single-Supply Piezo Element Driver |
|
Use Scenario: Providing clean, high-slew-rate drive to the input of >20-VPP output amplifiers like THS3091 in ultrasound or precision actuation systems. IC Role / Device Role / Timing Role: Gain-staged preamplifier with isolated D2S and OPS sections, allowing optimized noise/distortion trade-off before final high-voltage gain. Use Value: Delivers 5-VPP at 500 MHz with –75 dBc HD3, minimizing harmonic feedthrough into downstream high-gain stages. |
Use Scenario: Directly driving piezoelectric transducers or MEMS actuators requiring high-voltage, high-capacitance compatible drive from a single 15-V rail. IC Role / Device Role / Timing Role: Capacitive-load-optimized output stage delivering 12-VPP into heavy loads with controlled overshoot (<8%) and fast settling (7 ns). Use Value: Avoids external isolation transformers or discrete MOSFET drivers; supports dc-biased piezo actuation with VMID_OUT reference. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar differential-to-single-ended amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| THS3215IRGVT | Lower bandwidth (350 MHz SSBW, 250 MHz LSBW), lower quiescent current (35 mA), higher HD2/HD3 (–50 dBc / –50 dBc at 20 MHz, 5 VPP). | Better suited for cost- and power-sensitive AWG front-ends where <300-MHz signal content dominates. | Select THS3215IRGVT when full 800-MHz bandwidth and ultra-low distortion are not required, and power budget is constrained. |
| LMH5401RTVT | Single-stage, fully differential amplifier (FDA); no internal D2S/OPS separation; 1.2-GHz SSBW but only 250-MHz LSBW at 2 VPP; no integrated reference buffer or SPDT switch. | Optimized for high-impedance, fully differential signal chains-not DAC current-output interfacing. | Choose LMH5401RTVT for FDA-based receiver or ADC driver roles where differential signaling end-to-end is preferred and internal buffering is unnecessary. |
Compared with THS3217IRGVT, THS3215IRGVT trades bandwidth and distortion for lower power, while LMH5401RTVT offers higher small-signal speed but lacks the dedicated DAC interface features (D2S stage, SPDT mux, reference buffer) essential for current-output DAC systems.
Availability
THS3217IRGVT is available at Aetrix Electronics and suitable for digital-to-analog converter interface, arbitrary waveform generator output, and high-voltage predriver applications requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for THS3217IRGVT 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 for industrial, automotive, and communications markets.
The THS3217IRGVT belongs to TI's high-speed amplifier portfolio designed specifically for precision, wideband DAC output conditioning-emphasizing low distortion, dc coupling, and flexible gain staging for test & measurement and signal synthesis systems.
FAQ
What is the primary function of the THS3217IRGVT in a DAC signal chain?
The THS3217IRGVT serves as a dedicated differential-to-single-ended DAC output amplifier. Its D2S stage buffers complementary-current DAC outputs, converts them to single-ended format with fixed 2-V/V gain, and feeds the result-either directly or through filtering-to its configurable output power stage. This eliminates external passive termination and discrete amplification, preserving signal integrity from DAC to system output. The THS3217IRGVT is explicitly engineered for this role, as confirmed by TI's device description and application examples.
Does the THS3217IRGVT support single-supply operation, and how is biasing handled?
Yes, the THS3217IRGVT supports single-supply operation from 8 V to 15.8 V. Biasing is enabled by its integrated midscale reference buffer (pin 15, VMID_OUT), which provides a low-impedance, wideband (400-MHz SSBW) source at approximately half the supply voltage. This allows ac-coupled signal-path stages to operate with proper common-mode headroom without external resistive dividers. The THS3217IRGVT datasheet specifies this functionality under "Midscale (DC) Reference Buffer" electrical characteristics and application guidance.
How does the SPDT switch (PATHSEL pin) affect signal routing in the THS3217IRGVT?
The PATHSEL pin (pin 4) controls an internal 2×1 SPDT switch that selects the signal applied to the OPS noninverting input. When PATHSEL is low (≤0.7 V), the internal D2S output (pin 6) is routed to the OPS; when high (≥0.9 V), an external signal applied to VIN+ (pin 9) is selected instead. This allows dynamic reconfiguration-e.g., switching between DAC output and external calibration signal-without external multiplexers. THS3217IRGVT's datasheet confirms this behavior in Pin Functions and Device Functional Modes sections.
What are the key thermal considerations for the THS3217IRGVT in continuous operation?
The THS3217IRGVT uses a 4-mm × 4-mm VQFN package with an exposed thermal pad that must be soldered to a PCB ground plane to achieve specified thermal performance. With proper layout, its junction-to-board thermal resistance (RθJB) is 22 °C/W, enabling safe operation at 54 mA quiescent current across –40°C to +85°C ambient. TI recommends minimum 4×4 mm² copper pour under the pad and multiple thermal vias to inner/ground layers. These requirements are documented in the Thermal Information and Layout sections of the THS3217IRGVT datasheet.
Can the THS3217IRGVT drive heavy capacitive loads, and what is its maximum rated output swing?
Yes, the THS3217IRGVT is characterized to drive heavy capacitive loads: it delivers 12-VPP output using a single 15-V supply, and maintains stability and low distortion into typical piezo transducer capacitances. Its output stage provides 120 mA linear current into 26 Ω and 170 mA peak current, with <8% overshoot and 7-ns 0.1% settling time. These capabilities are explicitly verified in the THS3217IRGVT datasheet under "Output Stage" features and Electrical Characteristics tables for OPS and combined D2S+OPS operation.
THS3217IRGVT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-VQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Differential
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 5000V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 800 MHz
- Current - Input Bias:
- 1 µA
- Voltage - Input Offset:
- -
- Current - Supply:
- 55mA
- Current - Output / Channel:
- 100 mA
- Voltage - Supply Span (Min):
- 8 V
- Voltage - Supply Span (Max):
- 15.8 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-VQFN (4x4)
THS3217IRGVT FAQ
1.How can I place an order for THS3217IRGVT through Aetrix?
Please submit a Request for Quotation (RFQ) for THS3217IRGVT 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 THS3217IRGVT reliable?
The price and inventory of THS3217IRGVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS3217IRGVT is usually 5 days.
3.What payment methods are accepted for THS3217IRGVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS3217IRGVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS3217IRGVT?
THS3217IRGVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS3217IRGVT 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 THS3217IRGVT?
For technical support, including THS3217IRGVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS3217IRGVT requirements.
6.How does Aetrix verify that THS3217IRGVT is sourced from the original manufacturer or authorized distributors?
All THS3217IRGVT 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 THS3217IRGVT meets industry standards.
7.What is the process for return or replacement of THS3217IRGVT?
All THS3217IRGVT units undergo pre-shipment inspection (PSI). If there is an issue with THS3217IRGVT, 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 THS3217IRGVT part is unused and in its original packaging.
Return procedure for THS3217IRGVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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