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Texas Instruments THS4502CDGNG4
- Part No.:
- THS4502CDGNG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
THS4502CDGNG4.pdf
- Description:
- IC OPAMP DIFF 1 CIRCUIT 8HVSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,842
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Product details
Overview
THS4502CDGNG4 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, 51 dBm OIP3, and output common-mode voltage control (VOCM) for seamless interfacing with differential-input ADCs.
For engineers reviewing the THS4502CDGNG4 datasheet, THS4502CDGNG4 pinout, THS4502CDGNG4 application, or THS4502CDGNG4 equivalent, key selection criteria include its centered input common-mode range, ±5 V to ±7.5 V dual-supply operation, 8-pin MSOP PowerPAD™ package with thermal enhancement, and verified performance up to 40 MHz for 14-bit systems.
Technical Context
The THS4502CDGNG4 employs a fully differential architecture optimized for single-ended-to-differential conversion and high-linearity preamplification. Its internal VOCM buffer enables precise setting of output common-mode level independent of gain configuration, supporting rail-to-rail output swing referenced to user-defined VOCM.
It features a dedicated power-down pin (PD) that reduces quiescent current to ≤1.2 mA while maintaining high-impedance outputs and preserving input bias characteristics. The device exhibits stable operation only below +60°C junction temperature-exceeding this threshold risks low-level oscillation per TI's application note.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-signal bandwidth | 370 MHz at G = +1, ±5 V supply - supports wideband IF sampling and direct-conversion receiver front-ends. |
| Slew rate | 2800 V/µs - enables clean amplification of fast transient signals without slewing-induced distortion. |
| IMD3 @ 30 MHz | –95 dBc - ensures minimal spectral regrowth in multi-tone wireless signals, critical for LTE/WiMAX baseband. |
| OIP3 @ 30 MHz | 51 dBm - provides robust linearity margin for high-dynamic-range ADC drivers operating into 50 Ω loads. |
| Input common-mode range | ±4.0 V (min) at ±5 V supply - accommodates centered input signals without clipping in bipolar signal chains. |
| Power-down quiescent current | ≤1200 µA - allows system-level power gating during idle cycles without compromising signal integrity on wake-up. |
| Output voltage swing | ±7.4 V (min) differential into 1 kΩ - delivers full-scale drive for 14-bit ADCs with ≥2.5 VPP differential input requirements. |
Pinout & Package
The THS4502CDGNG4 is housed in an 8-pin MSOP PowerPAD™ package (DGN), featuring exposed thermal pad for enhanced heat dissipation and improved ac performance. Pin 1 is VIN−, pin 2 is VIN+, pin 3 is VOCM, pin 4 is VS+, pin 5 is VOUT+, pin 6 is PD, pin 7 is VS−, and pin 8 is VOUT−.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN− / VIN+ | Differential input pair | Accepts balanced or single-ended input; centered common-mode range enables direct coupling to DAC outputs or sensor bridges. |
| VOCM | Output common-mode control input | Sets DC offset of differential output pair; accepts 0–5 V range and defaults to ~2.5 V when floating (single-supply mode). |
| VS+ / VS− | Positive/negative supply rails | Supports ±5 V, ±7.5 V, or single 5–15 V operation; PSRR >70 dB minimizes supply noise coupling to output. |
| VOUT+ / VOUT− | Differential output pair | Drives 50 Ω or 800 Ω loads; output balance error <–58 dB ensures minimal even-order distortion in ADC interface paths. |
| PD | Power-down enable input | Active-low logic control: <0.7 V disables, >2.1 V enables; turnoff delay ≤800 ns enables fast sleep/wake cycling. |
Key Features
| Feature | Design Value |
|---|---|
| Fully differential architecture | Eliminates even-order harmonics and common-mode noise, enabling >90 dB SFDR in 14-bit ADC driver configurations. |
| Centered input common-mode range | ±3.4 V min at 85°C - allows direct connection to op-amp buffers or DACs without level-shifting circuitry. |
| Output common-mode control (VOCM) | 1.02 V/V max gain with ±2 mV offset - matches typical ADC reference midpoints (e.g., 2.5 V) with <0.1% error. |
| Power-down capability | Reduces IQ from 34 mA to ≤1.2 mA - extends battery life in portable instrumentation and intermittent-sampling systems. |
| Thermally enhanced MSOP PowerPAD™ | θJA = 58.4°C/W - sustains continuous operation at ambient ≤70°C without heatsink, unlike standard SOIC variants. |
Applications
| High Linearity ADC Preamplifier | Wireless Communication Receiver Chain |
|---|---|
|
Use Scenario: Driving a 14-bit, 80 MSPS analog-to-digital converter in a medical ultrasound front-end. IC Role / Device Role / Timing Role: Fully differential amplifier configured as single-ended-to-differential converter with VOCM set to 2.5 V. Use Value: –95 dBc IMD3 at 30 MHz preserves dynamic range across 20 MHz bandwidth, enabling accurate echo time-of-flight measurement. |
Use Scenario: Baseband signal conditioning in a 4G LTE femtocell receiver before IQ demodulation. IC Role / Device Role / Timing Role: Differential line driver between mixer output and ADC input, operating at ±5 V with VOCM = 0.9 V. Use Value: 51 dBm OIP3 prevents adjacent-channel interference from strong out-of-band blockers in dense RF environments. |
| Single-Ended to Differential Conversion | Active Filtering of Differential Signals |
|
Use Scenario: Converting output of a single-ended DAC in an automated test equipment waveform generator. IC Role / Device Role / Timing Role: Gain-of-1 differential amplifier with VOCM tied to DAC reference voltage. Use Value: Centered input common-mode range (±4.0 V) accepts full-scale DAC swing without clipping or external bias resistors. |
Use Scenario: Implementing a 2nd-order active bandpass filter in a precision data acquisition system. IC Role / Device Role / Timing Role: Core gain block in a fully differential Sallen-Key topology with feedback network referenced to VOCM. Use Value: 370 MHz bandwidth and 2800 V/µs slew rate support filter tuning up to 10 MHz without phase distortion or settling lag. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fully differential amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| THS4503CDGNG4 | No power-down pin; identical AC/DC specs except PD functionality removed. | Preferred where continuous operation is required and power gating is unnecessary. | Select THS4503CDGNG4 if system-level power management is handled externally and board space permits same footprint. |
| THS4502IDGNG4 | Extended temperature grade (–40°C to +85°C); otherwise identical electrical performance and pinout. | Required for industrial or automotive environments exceeding 70°C ambient. | Choose THS4502IDGNG4 when operating in uncontrolled thermal enclosures or outdoor deployments. |
Compared with THS4502CDGNG4, THS4503CDGNG4 eliminates power-down overhead but forfeits system-level energy savings, while THS4502IDGNG4 maintains identical functionality with guaranteed operation across wider ambient extremes-both share the same MSOP PowerPAD™ thermal profile and VOCM interface behavior.
Availability
THS4502CDGNG4 is available at Aetrix Electronics and suitable for high-speed data acquisition, wireless infrastructure transceivers, and precision instrumentation requiring stable component supply with guaranteed long-term manufacturability.
Supply support for THS4502CDGNG4 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 amplifier design and signal-chain solutions.
The THS4502 product line targets ultra-linear, wideband signal conditioning for 14-bit+ data converters and RF receiver front-ends, emphasizing distortion-limited fidelity over extended frequency ranges.
FAQ
What is the maximum junction temperature for reliable operation of the THS4502CDGNG4?
The THS4502CDGNG4 must be operated with junction temperature ≤60°C to prevent low-level oscillation. Exceeding this limit-even briefly-risks instability. Thermal design must ensure θJA × (PDISS) + TA stays below 60°C. At 34 mA quiescent current and ±5 V supply, power dissipation is ~340 mW; with θJA = 58.4°C/W, ambient must remain ≤40°C for safe margin. THS4502CDGNG4 datasheet Section 6.5 explicitly defines this constraint.
How does the VOCM pin function in single-supply operation of the THS4502CDGNG4?
In single-supply mode (e.g., 5 V), the VOCM pin sets the DC midpoint of the differential output pair. When left floating, it defaults to ~2.5 V-ideal for driving ADCs with 2.5 V reference. Driving VOCM with an external voltage (1–4 V) shifts output common-mode accordingly, enabling compatibility with diverse ADC input ranges. THS4502CDGNG4 maintains VOCM gain accuracy of 0.98–1.02 V/V and input bias <3 µA at 2.5 V, ensuring minimal loading on reference sources.
Is the THS4502CDGNG4 pin-compatible with the THS4503CDGNG4?
Yes-THS4502CDGNG4 and THS4503CDGNG4 share identical 8-pin MSOP PowerPAD™ footprints and pin assignments. The only functional difference is pin 6: THS4502CDGNG4 uses it as PD (power-down), while THS4503CDGNG4 leaves it as NC (no connect). No PCB changes are required for substitution, though firmware must not assert logic on pin 6 when using THS4503CDGNG4.
What load conditions achieve the specified –95 dBc IMD3 performance for the THS4502CDGNG4?
The –95 dBc third-order intermodulation distortion is measured at 30 MHz with 2 VPP differential output into RL = 800 Ω, using Rf = 392 Ω feedback and single-ended input. Performance degrades with lower load impedance: at 50 Ω, IMD3 worsens to ~–85 dBc due to increased current-dependent nonlinearity. THS4502CDGNG4 datasheet Figure 22 confirms this dependency, and layout must maintain symmetric 50 Ω traces to preserve balance and avoid degradation.
Does the THS4502CDGNG4 require external compensation capacitors for stability?
No-THS4502CDGNG4 is unity-gain stable and requires no external compensation. Its internal compensation ensures phase margin >60° across all gains (G = +1 to +10) and supply voltages (±5 V to ±7.5 V). Stability is verified per Figure 35 (open-loop gain/phase vs frequency) in the THS4502CDGNG4 datasheet, showing no peaking or ringing in transient response (Figures 27–28) under recommended layout practices including local 0.1 µF + 10 µF bypassing at VS+ and VS−.
THS4502CDGNG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- 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:
- -
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 15 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-HVSSOP
THS4502CDGNG4 FAQ
1.How can I place an order for THS4502CDGNG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for THS4502CDGNG4 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 THS4502CDGNG4 reliable?
The price and inventory of THS4502CDGNG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS4502CDGNG4 is usually 5 days.
3.What payment methods are accepted for THS4502CDGNG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS4502CDGNG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS4502CDGNG4?
THS4502CDGNG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS4502CDGNG4 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 THS4502CDGNG4?
For technical support, including THS4502CDGNG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS4502CDGNG4 requirements.
6.How does Aetrix verify that THS4502CDGNG4 is sourced from the original manufacturer or authorized distributors?
All THS4502CDGNG4 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 THS4502CDGNG4 meets industry standards.
7.What is the process for return or replacement of THS4502CDGNG4?
All THS4502CDGNG4 units undergo pre-shipment inspection (PSI). If there is an issue with THS4502CDGNG4, 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 THS4502CDGNG4 part is unused and in its original packaging.
Return procedure for THS4502CDGNG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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