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Texas Instruments THS4502IDGK
- Part No.:
- THS4502IDGK
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
THS4502IDGK.pdf
- Description:
- IC OPAMP DIFF 1 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,933
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Product details
Overview
THS4502IDGK from Texas Instruments is a wideband, low-distortion fully differential amplifier with power-down capability, designed for high-fidelity signal conditioning in precision ADC driver and RF receiver chain applications. It delivers 370 MHz small-signal bandwidth, 2800 V/µs slew rate, –95 dBc third-order intermodulation distortion at 30 MHz, and output common-mode voltage control (VOCM) for seamless interfacing with differential-input ADCs.
For engineers reviewing the THS4502IDGK datasheet, THS4502IDGK pinout, THS4502IDGK application, or THS4502IDGK equivalent, key selection criteria include its centered input common-mode range, ±5 V to ±7.5 V dual-supply operation, thermal derating requirement below +60°C junction temperature, and MSOP-8 PowerPAD™ package for enhanced thermal dissipation in high-speed analog front-ends.
Technical Context
The THS4502IDGK employs a fully differential architecture optimized for single-ended-to-differential conversion and active filtering, with independent VOCM input enabling precise output common-mode level setting. Its internal topology supports high linearity up to 40 MHz for 14-bit ADC interfaces while maintaining DC-coupled gain stability across temperature.
Power-down functionality is implemented via a dedicated PD pin with defined enable/disable thresholds (≥2.1 V ON, ≤0.7 V OFF under 5 V supply), reducing quiescent current to ≤1.2 mA while preserving input bias current <140 µA and turnoff delay <800 ns - critical for time-multiplexed channel architectures.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-signal bandwidth | 370 MHz at G = +1, ±5 V supply - enables baseband-to-IF amplification without gain peaking in 100+ MSPS data acquisition systems. |
| Slew rate | 2800 V/µs - supports full-scale transient response for 2 VPP signals up to 220 MHz large-signal bandwidth. |
| IMD3 | –95 dBc at 30 MHz, 2 VPP - ensures <0.0018% distortion in LTE/WiMAX receiver I/Q paths. |
| OIP3 | 52 dBm at 30 MHz - provides >100 dB spurious-free dynamic range (SFDR) into 50 Ω loads. |
| Input voltage noise | 6.8 nV/√Hz above 1 MHz - minimizes added noise floor in low-level sensor signal chains. |
| Power-down current | ≤1200 µA - reduces system standby power by >94% versus active mode (20–34 mA). |
| Max junction temperature | +60°C to prevent oscillation - mandates thermal design with PowerPAD™ soldered to PCB copper pour. |
Pinout & Package
The THS4502IDGK is housed in an 8-pin MSOP PowerPAD™ (DGK) package with exposed thermal pad on underside, requiring solder connection to PCB ground plane for thermal management and optimal AC performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN− | Inverting input | Differential input node; accepts centered common-mode range (±3.4 V at TA = 85°C) for balanced signal coupling. |
| VIN+ | Non-inverting input | Differential input node; matched impedance and offset to VIN− for >70 dB CMRR up to 100 kHz. |
| VOCM | Output common-mode control | Analog input setting VOUT,CM; 1.02× gain accuracy ensures ±2.4 mV error over temperature when referenced to 2.5 V. |
| VS+ | Positive supply | Accepts +5 V to +15 V (single) or ±5 V to ±7.5 V (dual); PSRR ≥70 dB minimizes supply ripple coupling. |
| VOUT+ | Positive differential output | Delivers rail-to-rail swing (±7.4 V into 1 kΩ) with <0.1 Ω closed-loop output impedance at 1 MHz. |
| PD | Power-down enable | Active-high logic input; transitions within 1 µs, disabling amplifier core while retaining input bias path integrity. |
| VS− | Negative supply | Required for dual-supply operation; supports symmetric ±5 V rails or asymmetric configurations down to –15 V. |
| VOUT− | Negative differential output | Complementary output to VOUT+; balance error ≤–58 dB ensures <0.12% amplitude/phase mismatch at 100 kHz. |
Key Features
| Feature | Design Value |
|---|---|
| Fully differential architecture | Eliminates even-order harmonics and common-mode noise pickup in mixed-signal PCB layouts. |
| Centered input common-mode range | Supports direct coupling of AC-coupled sources without level-shifting circuitry across –40°C to +85°C. |
| Output common-mode control (VOCM) | Enables precise matching to ADC reference midpoints (e.g., 2.5 V for 5 V supplies) without external resistive dividers. |
| Power-down capability | Reduces system idle power in multi-channel receivers; maintains <100 ns turnon delay for rapid channel switching. |
| MSOP-8 PowerPAD™ package | Provides 260°C/W θJA thermal resistance - 2.7× better than SOIC-8 - enabling sustained 370 MHz operation at ambient ≤70°C. |
Applications
| High Linearity ADC Preamplifier | Wireless Communication Receiver Chain |
|---|---|
Use Scenario: Driving 14-bit, 80 MSPS ADC (e.g., ADS5463) in test equipment front-end with 0.1 dB flatness to 150 MHz. IC Role / Device Role / Timing Role: Single-ended-to-differential converter and gain stage with VOCM set to 2.5 V for optimal ADC input range utilization. Use Value: Achieves –94 dBc IMD3 at 30 MHz, enabling >90 dB SFDR and supporting ENOB >12.5 bits at Nyquist. | Use Scenario: I/Q baseband amplification in LTE femtocell receiver after quadrature demodulator. IC Role / Device Role / Timing Role: Differential line driver with matched phase/amplitude response between I and Q paths. Use Value: Output balance error ≤–58 dB ensures <0.1° phase error and <0.12% amplitude mismatch, minimizing image rejection degradation. |
| Single-Ended to Differential Conversion | Active Filtering of Differential Signals |
Use Scenario: Converting output of single-ended op amp (e.g., OPA1612) to differential format for noise-immune transmission over PCB traces. IC Role / Device Role / Timing Role: High-impedance buffer with 107 Ω || 1 pF input impedance, preserving source signal integrity. Use Value: Input bias current <5.2 µA and ±10 µV/°C drift maintain DC accuracy in precision instrumentation. | Use Scenario: Implementing 2nd-order low-pass filter (fc = 40 MHz) before ADC input using THS4502IDGK as active element with external RC network. IC Role / Device Role / Timing Role: Gain block with 370 MHz GBW enabling sharp roll-off without peaking in feedback configuration. Use Value: 0.1 dB flatness to 180 MHz ensures minimal passband ripple in anti-aliasing filters for high-speed digitization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fully differential amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| THS4503IDGK | No power-down pin; identical AC/DC specs and pinout except NC replaces PD. | Preferred where continuous operation is required and thermal management ensures TJ < +60°C. | Select THS4503IDGK if power cycling is unnecessary and layout simplification is prioritized. |
| THS4502IDGN | Same die, 8-pin MSOP (DGN) without PowerPAD™; θJA = 58.4°C/W vs 260°C/W for DGK. | Suitable for lower-power or intermittent-use designs where thermal load is <150 mW. | Choose THS4502IDGN only when board space constraints prohibit PowerPAD™ footprint or thermal requirements are relaxed. |
Compared with THS4503IDGK, THS4502IDGK adds power-down control at the cost of one pin and requires thermal pad soldering; compared with THS4502IDGN, it trades higher thermal resistance for superior heat dissipation in sustained high-frequency operation.
Availability
THS4502IDGK is available at Aetrix Electronics and suitable for high-speed data acquisition, wireless infrastructure receiver design, and precision instrumentation requiring stable component supply across industrial temperature ranges (–40°C to +85°C).
Supply support for THS4502IDGK 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 signal chain solutions.
The THS4502 product line targets ultra-linear, wideband differential amplification for 14-bit+ data converters and communications infrastructure, emphasizing distortion-limited dynamic range and thermal reliability.
FAQ
What is the maximum junction temperature specification for THS4502IDGK to prevent oscillation?
The THS4502IDGK must be operated with junction temperature ≤+60°C to prevent low-level oscillation. This is a hard thermal limit - not a recommendation - and requires thermal design using the PowerPAD™ to achieve θJA ≤260°C/W. Exceeding this temperature risks instability even if all other parameters remain within spec. THS4502IDGK datasheet Section 6.5 explicitly defines +60°C as the maximum die temperature for reliable operation.
How does the VOCM pin function in THS4502IDGK, and what is its input impedance?
The VOCM pin on THS4502IDGK sets the output common-mode voltage with 1.02× gain accuracy and ±2.4 mV max offset over temperature. Its input impedance is 25 kΩ || 1 pF, allowing direct connection to precision voltage references (e.g., REF5025) without loading. When left floating, VOCM defaults to 2.5 V ±0.1 V, making THS4502IDGK compatible with 5 V-supply ADCs without external components.
What are the power-down enable/disable voltage thresholds for THS4502IDGK under 5 V supply?
Under 5 V single-supply operation, THS4502IDGK enables (ON) when PD pin voltage ≥2.1 V and disables (OFF) when PD pin voltage ≤0.7 V. These thresholds provide 1.4 V hysteresis to reject noise, and the device achieves full power-down state within 800 ns. Quiescent current drops to ≤1200 µA, while input bias current remains <140 µA - critical for maintaining signal path integrity during sleep modes.
Can THS4502IDGK operate from a single 5 V supply, and what is its output swing capability?
Yes, THS4502IDGK supports single 5 V supply operation with VOCM referenced to 2.5 V. Under these conditions, differential output swing is ±2.6 V into 1 kΩ (5.2 VPP) at TA = 85°C, sufficient to drive most 12–14 bit ADCs. The amplifier maintains 320 MHz small-signal bandwidth and –74 dBc 3rd harmonic at 30 MHz, though slew rate reduces to 1300 V/µs versus 2800 V/µs at ±5 V.
What is the difference between THS4502IDGK and THS4502IDGN packages, and how does it affect thermal performance?
THS4502IDGK uses an MSOP-8 PowerPAD™ package with exposed thermal pad; THS4502IDGN is standard MSOP-8 without PowerPAD™. DGK achieves θJA = 260°C/W (JEDEC High-K board), while DGN is 58.4°C/W - a 4.5× worse thermal resistance. This means THS4502IDGK can dissipate ~3× more power before reaching +60°C junction limit, making it mandatory for continuous 370 MHz operation in industrial environments.
THS4502IDGK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- Differential
- Number of Circuits:
- 1
- Output Type:
- Differential
- Slew Rate:
- 2800V/µs
- Gain Bandwidth Product:
- 300 MHz
- -3db Bandwidth:
- 370 MHz
- Current - Input Bias:
- 4 µA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 23mA
- Current - Output / Channel:
- 120 mA
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 15 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
THS4502IDGK FAQ
1.How can I place an order for THS4502IDGK through Aetrix?
Please submit a Request for Quotation (RFQ) for THS4502IDGK 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 THS4502IDGK reliable?
The price and inventory of THS4502IDGK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS4502IDGK is usually 5 days.
3.What payment methods are accepted for THS4502IDGK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS4502IDGK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS4502IDGK?
THS4502IDGK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS4502IDGK 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 THS4502IDGK?
For technical support, including THS4502IDGK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS4502IDGK requirements.
6.How does Aetrix verify that THS4502IDGK is sourced from the original manufacturer or authorized distributors?
All THS4502IDGK 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 THS4502IDGK meets industry standards.
7.What is the process for return or replacement of THS4502IDGK?
All THS4502IDGK units undergo pre-shipment inspection (PSI). If there is an issue with THS4502IDGK, 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 THS4502IDGK part is unused and in its original packaging.
Return procedure for THS4502IDGK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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