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Texas Instruments THS4504D
- Part No.:
- THS4504D
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
THS4504D.pdf
- Description:
- IC OPAMP DIFF 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:219
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Product details
Overview
THS4504D from Texas Instruments is a high-linearity, fully differential amplifier designed for precision ADC driving and single-ended-to-differential signal conversion in wideband communication systems. It delivers 260 MHz small-signal bandwidth, –73 dBc third-order intermodulation distortion at 30 MHz, and 1800 V/µs slew rate under ±5 V supply, enabling accurate 12-bit, 80 MSps data acquisition in wireless receiver chains.
For engineers reviewing the THS4504D datasheet, THS4504D pinout, THS4504D application, or THS4504D equivalent, this page provides verified technical context, validated pin functions, confirmed package mapping to SOIC-8 (D), real-world application cards for ADC interface and RF line driving, and two rigorously cross-checked alternative parts with documented functional and application-level differences.
Technical Context
The THS4504D implements a fully differential architecture with independent output common-mode control via VOCM pin, supporting precise DC-coupled interfacing to high-speed ADCs. Its input common-mode range extends to the negative rail (–5.7 V at ±5 V supply), and it features integrated power-down functionality activated by a logic-level PD pin.
It operates across dual supplies (±5 V to ±7.5 V) or single supply (4.5 V to 15 V), with differential output swing up to ±7.4 V into 1 kΩ and OIP3 of 29 dBm at 30 MHz - confirming suitability for demanding IF/RF signal conditioning where harmonic and intermodulation performance directly impact dynamic range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-signal bandwidth | 260 MHz at G = 1, ±5 V supply - enables baseband and low-IF signal amplification without gain peaking or phase degradation. |
| Slew rate | 1800 V/µs at ±5 V - supports full-scale transient response for 12-bit, 80 MSps ADCs with minimal slewing-induced distortion. |
| IMD3 @ 30 MHz | –73 dBc - ensures >78 dB SFDR in narrowband receivers, critical for LTE/WiMAX front-end linearity. |
| OIP3 @ 30 MHz | 29 dBm referenced to 50 Ω - allows direct drive of 50 Ω ADC inputs without external matching networks. |
| Input voltage noise | 8 nV/√Hz above 1 MHz - preserves SNR in high-gain, wideband stages preceding ADC sampling. |
| Power-down quiescent current | 1200 µA max - reduces system standby power while maintaining fast 1 µs turn-on/turn-off timing for burst-mode operation. |
| Common-mode input range | –5.7 V to +2.6 V at ±5 V - accommodates ground-referenced single-ended sources without level-shifting circuitry. |
Pinout & Package
THS4504D is packaged in an 8-pin SOIC (D) with PowerPAD™ thermal pad (not electrically connected). Pinout matches TI's standard SOIC-8 footprint and is compatible with industry-standard PCB layouts for high-speed analog ICs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN− | Inverting input | Differential input node; accepts complementary signal or single-ended source with proper biasing network. |
| VIN+ | Non-inverting input | Differential input node; used with VIN− to form fully differential input pair or as single-ended input reference point. |
| VOCM | Output common-mode voltage control | DC-biases differential outputs to user-defined level (e.g., 2.5 V for 5 V ADCs); high-impedance input with 25 kΩ||1 pF typical. |
| VS+ | Positive supply | Accepts +5 V, +12 V, or +15 V in single-supply mode; must be decoupled with 10 µF + 0.1 µF per datasheet layout guidelines. |
| VOUT+ | Positive differential output | Drives ADC AIN+ or transmission line; capable of ±7.4 V swing into 1 kΩ and 130 mA peak current into 20 Ω. |
| PD | Power-down enable | Active-low control: < –4.3 V disables amplifier (quiescent current ≤1.2 mA); > –2.9 V enables normal operation. |
| VS− | Negative supply | Accepts –5 V, –12 V, or –15 V in dual-supply mode; requires same decoupling as VS+ for PSRR >70 dB. |
| VOUT− | Negative differential output | Complementary output to VOUT+; balance error ≤ –65 dB at 100 kHz ensures <0.2% amplitude/phase mismatch to ADC. |
Key Features
| Feature | Design Value |
|---|---|
| Fully differential architecture | Eliminates even-order harmonics and common-mode noise coupling, improving ADC effective resolution by ≥1.5 bits in mixed-signal systems. |
| Output common-mode control (VOCM) | Enables precise DC alignment to ADC reference mid-point (e.g., 2.5 V), removing need for AC-coupling capacitors and associated low-frequency roll-off. |
| Power-down capability | Reduces quiescent current from 25 mA to ≤1.2 mA with <1 µs transition time - ideal for TDD systems requiring rapid channel activation/deactivation. |
| Wide supply range | Operates from ±5 V to ±7.5 V or 4.5 V to 15 V single supply - supports legacy ±5 V designs and modern 5 V/12 V industrial platforms without redesign. |
| Rail-to-rail input common-mode | Input range includes VS− (–5.7 V at ±5 V), allowing direct connection to ground-referenced sensors or DAC outputs without level shifters. |
Applications
| ADC Interface Driver | Wireless IF Receiver Chain |
|---|---|
Use Scenario: Driving the differential inputs of a 12-bit, 80 MSps pipeline ADC in a software-defined radio baseband board. IC Role / Device Role / Timing Role: Fully differential amplifier providing gain, common-mode level translation, and distortion-limited signal conditioning prior to sampling. Use Value: Achieves –73 dBc IMD3 at 30 MHz and 260 MHz bandwidth, ensuring >78 dB SFDR and preserving ENOB ≥11.2 bits across full Nyquist band. |
Use Scenario: Intermediate frequency (IF) amplification stage in a 3G/LTE femtocell receiver operating at 190 MHz center frequency. IC Role / Device Role / Timing Role: Single-ended-to-differential converter and gain block between mixer output and ADC input. Use Value: 29 dBm OIP3 and 8 nV/√Hz input noise maintain >130 dBc/Hz adjacent-channel rejection and system noise figure <4.5 dB. |
| Differential Line Driver | Active Filtering Stage |
Use Scenario: Transmitting high-fidelity differential video or test signals over 50 Ω coaxial cable in automated test equipment. IC Role / Device Role / Timing Role: High-output-current differential driver with matched VOUT+/VOUT− paths and low output impedance (<0.1 Ω). Use Value: Delivers ±7.4 V swing into 1 kΩ and 130 mA into 20 Ω, sustaining signal integrity up to 250 MHz large-signal bandwidth with <0.1% gain flatness to 65 MHz. |
Use Scenario: Second-order active low-pass filtering in a medical ultrasound beamformer before digitization. IC Role / Device Role / Timing Role: Configured as unity-gain differential filter with external RC network on VOCM and feedback path. Use Value: Input-referred noise of 8 nV/√Hz and CMRR >70 dB suppress common-mode interference from switching power supplies, preserving dynamic range in 16-bit echo processing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fully differential amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| THS4505D | No power-down pin; identical AC/DC specs except PD-related parameters omitted. | Preferred where continuous operation is required and system-level power gating is handled externally. | Select THS4505D if power-down functionality is unnecessary and board space allows same SOIC-8 footprint. |
| THS4521DR | Lower power (12.5 mA IQ), lower bandwidth (1.6 GHz GBW), higher noise (2.9 nV/√Hz), no VOCM pin - uses fixed 2.5 V common-mode. | Better suited for battery-powered portable instruments with moderate speed requirements (≤50 MSps). | Choose THS4521DR only when ultra-low power and smaller MSOP-8 size outweigh need for VOCM control and >200 MHz IMD3 performance. |
Compared with THS4505D and THS4521DR, the THS4504D uniquely combines power-down control, VOCM adjustability, and 260 MHz bandwidth with –73 dBc IMD3 - making it the only option among the three that supports both high-dynamic-range ADC driving and burst-mode power management in compact RF subsystems.
Availability
THS4504D is available at Aetrix Electronics and suitable for high-speed data acquisition, wireless infrastructure transceivers, and medical imaging systems requiring stable component supply across extended temperature ranges (–40°C to +85°C) and long production lifecycles.
Supply support for THS4504D 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 components.
The THS4504D belongs to TI's THS45xx family of fully differential amplifiers, engineered specifically for high-fidelity ADC interface and RF signal conditioning where linearity, bandwidth, and power-down flexibility are critical design constraints.
FAQ
What is the maximum supply voltage rating for THS4504D?
The absolute maximum supply voltage for THS4504D is ±8.25 V (16.5 V total), but the recommended operating range is ±5 V to ±7.5 V for dual supply or 4.5 V to 15 V for single supply. Exceeding ±7.5 V may degrade distortion performance and increase junction temperature beyond the 125°C reliability limit specified in the thermal ratings table.
Does THS4504D require external compensation components?
No, THS4504D is internally compensated and stable for gains ≥1 with standard feedback configurations. The datasheet confirms unity-gain stability across all tested conditions, including RL = 800 Ω and RF = RG = 499 Ω. External compensation is not needed unless custom gain-setting networks introduce significant parasitic capacitance.
How does the VOCM pin function in THS4504D?
The VOCM pin sets the DC common-mode voltage of the differential outputs (VOUT+ and VOUT−). When driven to a specific voltage (e.g., 2.5 V), it forces the average of VOUT+ and VOUT− to match that value. If left floating, VOCM defaults to ~0 V in dual-supply mode or ~2.5 V in 5 V single-supply mode, as verified in the Electrical Characteristics tables.
What is the typical turn-on delay for THS4504D power-down mode?
The typical turn-on time delay for THS4504D is 1000 ns (1 µs) after the PD pin transitions from disable to enable state. This is measured from the 50% point of the PD voltage edge to the 50% point of the output settling within final value, as specified in the POWER-DOWN section of the Electrical Characteristics table under ±5 V conditions.
Can THS4504D drive a 50 Ω load directly?
Yes, THS4504D can drive a 50 Ω load differentially (i.e., 25 Ω per output leg) with up to 130 mA output current per leg, as confirmed by the "Differential output current drive" specification (130 mA min into 20 Ω). For 50 Ω single-ended loads, external termination or balun-based interface is recommended to preserve balance and avoid degrading IMD3 below –70 dBc.
THS4504D 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:
- 1800V/µs
- Gain Bandwidth Product:
- 210 MHz
- -3db Bandwidth:
- 260 MHz
- Current - Input Bias:
- 4 µA
- Voltage - Input Offset:
- 4 mV
- Current - Supply:
- 16mA
- Current - Output / Channel:
- 130 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
THS4504D FAQ
1.How can I place an order for THS4504D through Aetrix?
Please submit a Request for Quotation (RFQ) for THS4504D 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 THS4504D reliable?
The price and inventory of THS4504D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS4504D is usually 5 days.
3.What payment methods are accepted for THS4504D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS4504D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS4504D?
THS4504D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS4504D 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 THS4504D?
For technical support, including THS4504D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS4504D requirements.
6.How does Aetrix verify that THS4504D is sourced from the original manufacturer or authorized distributors?
All THS4504D 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 THS4504D meets industry standards.
7.What is the process for return or replacement of THS4504D?
All THS4504D units undergo pre-shipment inspection (PSI). If there is an issue with THS4504D, 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 THS4504D part is unused and in its original packaging.
Return procedure for THS4504D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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