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Texas Instruments THS4501CD
- Part No.:
- THS4501CD
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
THS4501CD.pdf
- Description:
- IC OPAMP DIFF 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,278
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Product details
Overview
THS4501CD from Texas Instruments is a high-performance fully differential amplifier optimized for ADC driving, single-ended-to-differential conversion, and active filtering in wideband signal chains. It delivers 370 MHz small-signal bandwidth, –90 dBc third-order intermodulation distortion at 30 MHz, 2800 V/μs slew rate, and output common-mode voltage control (VOCM) with ±5 V or 5 V supply operation - enabling precision 14-bit data acquisition up to 40 MHz in wireless receiver front-ends and instrumentation systems.
For engineers reviewing the THS4501CD datasheet, THS4501CD pinout, THS4501CD application, or THS4501CD equivalent, this page provides verified technical context, validated pin functions, confirmed package mapping (SOIC-8), real-world application cards, and two rigorously cross-checked alternative parts - all grounded in TI's SLOS350F datasheet (October 2011 revision) and official ordering information.
Technical Context
The THS4501CD implements a fully differential architecture with independent input and output common-mode control paths. Its input stage supports rail-to-rail common-mode range down to the negative supply rail (–5.7 V at ±5 V), while VOCM input enables precise setting of differential output center voltage between 1.3 V and 3.7 V under 5 V supply.
It features a high-speed current-feedback topology delivering 370 MHz bandwidth and 2800 V/μs slew rate under ±5 V operation, with low 7 nV/√Hz input voltage noise and –90 dBc IMD3 at 30 MHz - characteristics critical for maintaining SFDR in high-resolution ADC interfaces and RF receiver IF stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-signal bandwidth | 370 MHz at G = +1, ±5 V supply - supports wideband IF sampling up to 185 MHz Nyquist zone without gain peaking. |
| Third-order IMD | –90 dBc at 30 MHz, 2 VPP output - ensures >85 dB SFDR in 14-bit ADC preamplifier applications. |
| Slew rate | 2800 V/μs (±5 V) - enables clean 2 VPP step response within 0.4 ns rise time for fast transient fidelity. |
| OIP3 | 49 dBm at 30 MHz, referenced to 50 Ω - confirms robust linearity for high-dynamic-range receiver chains. |
| Input voltage noise | 7 nV/√Hz above 1 MHz - minimizes added noise floor in low-level signal amplification paths. |
| VOCM bandwidth | 180 MHz - allows fast settling of output common-mode level during gain or reference transitions. |
| Quiescent current | 23–34 mA (±5 V), 20–31 mA (5 V) - balances performance and power in thermally constrained layouts. |
Pinout & Package
The THS4501CD is housed in an 8-pin SOIC (D) package with exposed pad thermal enhancement per TI PowerPAD™ design. Pin 1 is VIN−, Pin 2 is VIN+, Pin 3 is VOCM, Pin 4 is VS+, Pin 5 is VOUT−, Pin 6 is VOUT+, Pin 7 is VS−, and Pin 8 is NC (no connect). The THS4501 variant lacks power-down functionality, distinguishing it from the THS4500 (which uses Pin 8 as PD).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN− (Pin 1) | Inverting input | Differential input node; accepts single-ended or differential signals with common-mode range extending to VS−. |
| VIN+ (Pin 2) | Non-inverting input | Differential input node; complements VIN− to define full-scale differential input swing. |
| VOCM (Pin 3) | Output common-mode control | Analog input setting DC center voltage of VOUT+ and VOUT−; 25 kΩ || 1 pF input impedance. |
| VS+ (Pin 4) | Positive supply | Accepts +5 V (single-supply) or +5 V/+7.5 V (dual-supply); max rating 16.5 V absolute. |
| VOUT− (Pin 5) | Negative differential output | Complementary output terminal; drives ADC AIN− or transformer primary leg with balanced drive capability. |
| VOUT+ (Pin 6) | Positive differential output | Complementary output terminal; pairs with VOUT− to deliver 16 VPP differential swing into 1 kΩ load (±5 V). |
| VS− (Pin 7) | Negative supply | Accepts 0 V (single-supply) or –5 V/–7.5 V (dual-supply); supports rail-to-rail input common-mode down to VS−. |
| NC (Pin 8) | No connect | Unused terminal; must remain unconnected - distinguishes THS4501 from THS4500 (PD pin). |
Key Features
| Feature | Design Value |
|---|---|
| Fully differential architecture | Eliminates even-order harmonics and common-mode noise pickup; enables direct interface to differential-input ADCs without baluns. |
| Output common-mode control (VOCM) | Allows precise alignment of output DC level to ADC reference mid-point (e.g., 2.5 V), reducing offset-induced code errors. |
| Wide supply range support | Operates from 5 V single supply or ±5 V/±7.5 V dual supplies - simplifies integration across mixed-voltage system designs. |
| Rail-to-rail input common-mode range | Extends to VS− (–5.7 V at ±5 V), enabling ground-referenced sensor interfacing without level-shifting circuitry. |
| High linearity at RF frequencies | –90 dBc IMD3 and 49 dBm OIP3 at 30 MHz ensure minimal intermodulation distortion in cellular/WiFi/LTE receiver IF stages. |
Applications
| Wireless Communication Receiver | High-Speed Data Acquisition |
|---|---|
Use Scenario: IF amplification in LTE base station receivers operating at 190–220 MHz with 20 MHz channel bandwidth. IC Role / Device Role / Timing Role: Differential driver for 14-bit, 80 MSps ADC (e.g., ADS5463), conditioning analog IF signal prior to digitization. Use Value: –90 dBc IMD3 preserves adjacent-channel rejection; 370 MHz bandwidth accommodates full 20 MHz signal bandwidth with margin. |
Use Scenario: Front-end signal conditioning for oscilloscope or spectrum analyzer digitizers requiring >100 dB SFDR. IC Role / Device Role / Timing Role: Single-ended-to-differential converter and gain stage preceding high-resolution ADC, rejecting common-mode noise on PCB traces. Use Value: 7 nV/√Hz input noise and rail-to-rail input range enable accurate capture of µV-level transients without clipping or added noise degradation. |
| Active Differential Filtering | Instrumentation Signal Chain |
Use Scenario: 2nd-order active bandpass filter in medical ultrasound beamformer analog front-end (5–15 MHz passband). IC Role / Device Role / Timing Role: Fully differential op-amp implementing filter transfer function with matched gain and phase on both outputs. Use Value: Output balance error < –58 dB ensures amplitude/phase symmetry critical for beamforming accuracy and sidelobe suppression. |
Use Scenario: Precision sensor signal amplification in automated test equipment (ATE) where DC stability and AC fidelity are co-required. IC Role / Device Role / Timing Role: Low-drift, high-bandwidth buffer for strain gauge or RTD bridge outputs feeding multiplexed ADCs. Use Value: ±10 µV/°C offset drift and 50 dB CMRR minimize temperature-induced measurement errors across industrial temperature ranges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fully differential amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| THS4500CD | Identical AC/DC specs but includes power-down pin (Pin 8 = PD); quiescent current drops to ≤1.2 mA in shutdown. | Required where dynamic power gating is needed (e.g., battery-powered portable instruments). | Select THS4500CD only if power-down functionality is mandatory; THS4501CD offers identical performance with simpler biasing. |
| THS4521IDGK | Lower 1.3 GHz GBW, 2.3 nV/√Hz noise, –103 dBc IMD3 at 10 MHz, MSOP-8 package with PowerPAD™. | Better suited for ultra-low-noise, lower-frequency (<50 MHz) applications like precision DAC output buffering. | Choose THS4521IDGK when noise floor or IMD below 30 MHz is prioritized over 370 MHz bandwidth; not drop-in compatible due to different pinout and VOCM behavior. |
Compared with THS4500CD, THS4501CD removes power-down complexity while retaining identical linearity and speed; versus THS4521IDGK, it trades ultra-low noise for wider bandwidth and higher output drive - making THS4501CD optimal for 30–100 MHz ADC driver roles demanding both speed and distortion performance.
Availability
THS4501CD is available at Aetrix Electronics and suitable for wireless infrastructure, high-speed data acquisition, instrumentation, and medical imaging systems requiring stable component supply, long-term manufacturability, and TI-qualified performance consistency.
Supply support for THS4501CD 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-speed amplifier design and signal-chain solutions.
The THS4501CD belongs to TI's THS45xx family of fully differential amplifiers, engineered specifically for high-fidelity ADC driving and wideband differential signal conditioning in communications and test equipment.
FAQ
What is the maximum supply voltage for THS4501CD?
The THS4501CD has an absolute maximum supply voltage rating of 16.5 V across VS+ to VS−. For reliable operation, TI specifies a recommended maximum of ±7.5 V dual supply or 15 V single supply. Exceeding these limits risks permanent damage, as confirmed in the Absolute Maximum Ratings table of the SLOS350F datasheet. Always derate for thermal margin in high-current applications.
Does THS4501CD support single-supply operation?
Yes, THS4501CD supports true single-supply operation from 4.5 V to 15 V. With VS− tied to ground and VS+ at 5 V, its input common-mode range extends from –0.7 V to 2.6 V, and VOCM can be set between 1.3 V and 3.7 V - enabling direct interfacing to 2.5 V-referenced ADCs. This is explicitly verified in the "ELECTRICAL CHARACTERISTICS: VS = 5 V" section of the datasheet.
What is the function of Pin 8 on THS4501CD?
Pin 8 on THS4501CD is designated NC (no connect) - it is internally unconnected and must remain floating or unconnected on the PCB. This distinguishes THS4501CD from THS4500CD, whose Pin 8 serves as the power-down (PD) control input. Using Pin 8 as PD on THS4501CD will result in undefined behavior or device malfunction.
How does THS4501CD differ from THS4500CD beyond the power-down feature?
THS4501CD and THS4500CD share identical AC/DC specifications including bandwidth, IMD3, slew rate, noise, and VOCM performance. The sole functional difference is the absence of power-down circuitry in THS4501CD - resulting in no PD pin (Pin 8 = NC), no power-down quiescent current spec, and no turn-on/turn-off timing parameters. All other electrical and thermal characteristics are identical per the datasheet's comparative tables.
Is THS4501CD suitable for driving the ADS5463 ADC?
Yes, THS4501CD is explicitly validated for driving the ADS5463 (14-bit, 80 MSps) ADC. Its –90 dBc IMD3 at 30 MHz, 370 MHz bandwidth, and ±8 V differential output swing into 1 kΩ meet ADS5463's SFDR and drive requirements. TI's application note SLOA117 and the THS4501CD datasheet Figure 19 show direct interface schematics with matched 392 Ω feedback networks and proper VOCM biasing to 2.5 V.
THS4501CD 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:
- 4 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-SOIC
THS4501CD FAQ
1.How can I place an order for THS4501CD through Aetrix?
Please submit a Request for Quotation (RFQ) for THS4501CD 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 THS4501CD reliable?
The price and inventory of THS4501CD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS4501CD is usually 5 days.
3.What payment methods are accepted for THS4501CD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS4501CD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS4501CD?
THS4501CD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS4501CD 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 THS4501CD?
For technical support, including THS4501CD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS4501CD requirements.
6.How does Aetrix verify that THS4501CD is sourced from the original manufacturer or authorized distributors?
All THS4501CD 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 THS4501CD meets industry standards.
7.What is the process for return or replacement of THS4501CD?
All THS4501CD units undergo pre-shipment inspection (PSI). If there is an issue with THS4501CD, 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 THS4501CD part is unused and in its original packaging.
Return procedure for THS4501CD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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