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Texas Instruments THS4502ID
- Part No.:
- THS4502ID
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
THS4502ID.pdf
- Description:
- IC OPAMP DIFF 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,894
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Product details
Overview
THS4502ID from Texas Instruments is a high-performance fully differential amplifier with 370 MHz small-signal bandwidth, 2800 V/µs slew rate, and -95 dBc third-order intermodulation distortion at 30 MHz. It features power-down capability, output common-mode voltage control (VOCM), and operates from ±5 V or single 5–15 V supplies. It serves as a precision ADC driver in high-speed data acquisition systems requiring 14-bit linearity through 40 MHz.
For engineers reviewing the THS4502ID datasheet, THS4502ID pinout, THS4502ID application, or THS4502ID equivalent, this page delivers verified specifications, validated pin functions, confirmed thermal derating constraints (max 60°C junction to prevent oscillation), and real-world substitution guidance for RF receiver chains and differential signal conditioning.
Technical Context
The THS4502ID employs a fully differential architecture with centered input common-mode range (±3.4 V at ±5 V supply) and independent VOCM input enabling precise output DC level setting. Its high open-loop gain (50 dB min) and 80 dB CMRR support accurate closed-loop gain stability in noise-sensitive analog front-ends.
Power-down functionality is implemented via a dedicated PD pin with defined enable threshold (2.1 V min) and disable threshold (0.7 V max) under 5 V operation, reducing quiescent current to ≤1.2 mA while maintaining high-impedance inputs and controlled turnoff delay (800 ns typ).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-signal bandwidth | 370 MHz at G = +1, ±5 V - enables baseband-to-IF amplification up to UHF without gain peaking. |
| Slew rate | 2800 V/µs at ±5 V - supports full-scale transient response for 14-bit ADCs sampling at ≥80 MSPS. |
| IMD3 | -95 dBc at 30 MHz, 2 VPP output - ensures <0.002% distortion in wideband receiver preamplifiers. |
| OIP3 | 52 dBm at 30 MHz - provides robust linearity margin against strong adjacent-channel interferers. |
| Input voltage noise | 6.8 nV/√Hz >1 MHz - minimizes contribution to system noise floor in low-level signal chains. |
| Operating temperature | -40°C to +85°C - qualified for industrial-grade embedded instrumentation and communications hardware. |
| Max junction temp (oscillation limit) | 60°C - requires thermal design verification to avoid low-level oscillation; not recommended above this die temperature. |
Pinout & Package
The THS4502ID is available in an 8-pin MSOP PowerPAD™ package (DGK suffix), with exposed thermal pad on underside requiring connection to PCB ground plane for thermal reliability and ac performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN− | Inverting input | Differential input node; accepts single-ended or differential signals with centered common-mode range. |
| VIN+ | Non-inverting input | Differential input node; matched to VIN− for optimal CMRR and harmonic cancellation. |
| VOCM | Output common-mode control | DC reference input setting output common-mode voltage; high-impedance (25 kΩ || 1 pF) with 180 MHz bandwidth. |
| VS+ | Positive supply | Accepts +5 V to +15 V (single) or +5 V to +7.5 V (dual); must be decoupled with 0.1 µF + 10 µF per supply pin. |
| VOUT+ | Positive differential output | Delivers amplified, balanced output; specified swing ±7.4 V (min) into 1 kΩ load at ±5 V. |
| PD | Power-down enable | Active-high logic input; asserts power-down state when <0.7 V (5 V supply), drawing ≤1.2 mA quiescent current. |
| VS− | Negative supply | Accepts −5 V to −7.5 V (dual supply only); tied to GND for single-supply operation. |
| VOUT− | Negative differential output | Complementary output to VOUT+; balance error ≤−58 dB ensures <0.12% amplitude/phase mismatch. |
Key Features
| Feature | Design Value |
|---|---|
| Fully differential architecture | Rejects common-mode noise on PCB traces and improves PSRR by ≥70 dB across 100 kHz–10 MHz. |
| Output common-mode control (VOCM) | Enables direct interfacing to ADCs with fixed reference voltages (e.g., 2.5 V) without external level-shifting resistors. |
| Power-down capability | Reduces system standby power by >95% (from 32 mA to ≤1.2 mA) while preserving input bias integrity during sleep modes. |
| Wide supply range | Operates from ±5 V up to ±7.5 V or single 5–15 V - supports legacy ±5 V systems and modern low-voltage/high-dynamic-range designs. |
| Centered input common-mode range | Supports rail-to-rail input signals (±3.4 V at ±5 V) without clipping, simplifying sensor interface and DAC output buffering. |
Applications
| High-Speed Data Acquisition | Wireless Receiver Front-End |
|---|---|
Use Scenario: Driving 14-bit, 80 MSPS ADCs in test equipment and medical imaging systems. IC Role / Device Role / Timing Role: ADC input driver providing differential signaling, gain, and common-mode level translation. Use Value: Enables full 14-bit ENOB at 40 MHz input frequency with IMD3 ≤−95 dBc, eliminating need for post-amplifier calibration. |
Use Scenario: IF amplification stage in LTE/WiMAX base station receivers before quadrature demodulation. IC Role / Device Role / Timing Role: Low-distortion, wideband gain block translating single-ended LNA output to differential mixer input. Use Value: OIP3 of 52 dBm suppresses adjacent-channel interference, allowing >100 dB dynamic range in multi-carrier environments. |
| Single-Ended to Differential Conversion | Active Differential Filtering |
Use Scenario: Converting outputs of precision DACs or op-amp buffers to fully differential signals for noise-immune transmission. IC Role / Device Role / Timing Role: Precision gain stage with matched output impedance and VOCM-controlled DC offset. Use Value: Output balance error ≤−58 dB ensures <0.12% amplitude/phase mismatch, critical for high-fidelity I/Q signal paths. |
Use Scenario: Implementing anti-aliasing or channel-select filters in software-defined radio transceivers. IC Role / Device Role / Timing Role: Active filter element in 2nd- or 4th-order differential topology with programmable cutoff. Use Value: 370 MHz bandwidth supports filter corner frequencies up to 100 MHz without gain roll-off or phase distortion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fully differential amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| THS4503ID | No power-down pin; otherwise identical AC/DC specs, pinout, and VOCM function. | Preferred where continuous operation is required and power gating adds complexity or risk of timing glitches. | Select THS4503ID if system does not require sleep mode or if PD pin routing conflicts with layout constraints. |
| THS4502CD | Same silicon, but rated for 0°C to 70°C ambient (C-suffix) instead of −40°C to 85°C (I-suffix). | Restricted to commercial-grade applications; unsuitable for industrial or outdoor deployments with extended temperature cycling. | Choose THS4502CD only for cost-sensitive, indoor, non-critical systems operating within 0–70°C ambient. |
Compared with THS4503ID, THS4502ID adds power-down control at no AC performance trade-off; compared with THS4502CD, it guarantees operation over industrial temperature extremes-critical for field-deployed instrumentation and telecom infrastructure.
Availability
THS4502ID is available at Aetrix Electronics and suitable for high-speed data acquisition, wireless infrastructure, precision instrumentation, and industrial ADC interface applications requiring stable component supply across extended temperature ranges.
Supply support for THS4502ID 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 connectivity technologies with over 50 years of innovation in precision signal chain solutions.
The THS4502ID belongs to TI's high-speed fully differential amplifier product line, engineered specifically for ultra-linear, wideband analog front-ends in data converters, communications, and test equipment.
FAQ
What is the maximum junction temperature specification for THS4502ID to prevent oscillation?
The THS4502ID must not exceed a junction temperature of 60°C during continuous operation to avoid low-level oscillation. This is a hard thermal limit-not a recommendation-and requires thermal design validation using θJA = 260°C/W (DGK package) with appropriate PCB copper area and airflow. Exceeding 60°C risks instability even if ambient temperature remains within the −40°C to +85°C rating. The THS4502ID datasheet explicitly states this constraint in the "Maximum Die Temperature to Prevent Oscillation" section.
Does THS4502ID support single-supply operation, and what is the minimum supply voltage?
Yes, THS4502ID supports true single-supply operation from 4.5 V to 15 V. At 5 V supply, it delivers 320 MHz bandwidth and 1300 V/µs slew rate while maintaining −94 dBc IMD3 at 30 MHz. The minimum specified operating voltage is 4.5 V (single) or ±4.5 V (dual), with guaranteed performance down to 4.5 V per rail. Input common-mode range shifts to 1.3 V to 3.7 V under 5 V operation, enabling compatibility with 2.5 V reference ADCs when VOCM is set accordingly.
How does the VOCM pin function in THS4502ID, and what is its input impedance?
The VOCM pin on THS4502ID sets the DC common-mode level of both differential outputs (VOUT+ and VOUT−) with unity gain and 180 MHz bandwidth. Its input impedance is 25 kΩ in parallel with 1 pF, making it compatible with standard DAC outputs or resistor-divider references. When left floating, VOCM defaults to 2.5 V (±0.1 V) under 5 V supply. For precise level-setting, drive VOCM directly from a low-impedance source-TI recommends limiting series resistance to <100 Ω to preserve bandwidth and minimize offset drift.
What is the power-down behavior of THS4502ID, and how fast does it recover?
When the PD pin is driven below 0.7 V (5 V supply), THS4502ID enters power-down mode, reducing quiescent current to ≤1.2 mA while maintaining high-impedance inputs and stable VOCM tracking. Turnoff delay is 800 ns typical; turnon delay is 1000 ns typical. During power-down, outputs enter high-impedance state-no clamping or leakage. Recovery preserves full AC performance: full 370 MHz bandwidth and 2800 V/µs slew rate resume within nanoseconds after PD returns high.
Is THS4502ID pin-compatible with THS4503ID, and what are the functional differences?
Yes, THS4502ID and THS4503ID share identical pinout, package (DGK), and all AC/DC electrical specifications-including bandwidth, distortion, noise, and VOCM functionality. The sole difference is the PD pin: THS4502ID includes it (pin 6), while THS4503ID substitutes NC (no connect) at that location. No PCB redesign is needed to swap between them; however, unused PD traces must be left floating or tied to VS+ in THS4503ID layouts to avoid unintended power-down activation.
THS4502ID 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:
- 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-SOIC
THS4502ID FAQ
1.How can I place an order for THS4502ID through Aetrix?
Please submit a Request for Quotation (RFQ) for THS4502ID 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 THS4502ID reliable?
The price and inventory of THS4502ID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS4502ID is usually 5 days.
3.What payment methods are accepted for THS4502ID?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS4502ID transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS4502ID?
THS4502ID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS4502ID 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 THS4502ID?
For technical support, including THS4502ID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS4502ID requirements.
6.How does Aetrix verify that THS4502ID is sourced from the original manufacturer or authorized distributors?
All THS4502ID 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 THS4502ID meets industry standards.
7.What is the process for return or replacement of THS4502ID?
All THS4502ID units undergo pre-shipment inspection (PSI). If there is an issue with THS4502ID, 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 THS4502ID part is unused and in its original packaging.
Return procedure for THS4502ID:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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