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Home > Products > Integrated Circuits (ICs) > Linear > Instrumentation, Op Amps, Buffer Amps

Texas Instruments THS4502IDR

Name: THS4502IDR
Brand: Texas Instruments
SKU: THS4502IDR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: THS4502IDR

Manufacturer:: Texas Instruments

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: THS4502IDR.pdf

Description:: IC OPAMP DIFF 1 CIRCUIT 8SOIC

Quantity:: RFQ Add To RFQ list

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Product details

Overview

THS4502IDR from Texas Instruments is a high-performance fully differential amplifier with power-down capability, designed for precision signal conditioning in high-speed data acquisition systems. It delivers 370 MHz small-signal bandwidth, 2800 V/µs slew rate, and -95 dBc third-order intermodulation distortion at 30 MHz - enabling 14-bit ADC preamplification up to 40 MHz in ±5 V or single 5 V supply configurations.

For engineers reviewing the THS4502IDR datasheet, THS4502IDR pinout, THS4502IDR application, or THS4502IDR equivalent, key selection criteria include its centered input common-mode range, output common-mode voltage control (VOCM), low 6.8 nV/√Hz input voltage noise, and thermal oscillation limit of +60°C junction temperature.

Technical Context

The THS4502IDR 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 high open-loop gain (≥50 dB) and 80 dB CMRR support accurate closed-loop gain stability across wide frequency bands.

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 maintaining high-impedance inputs and controlled turnoff delay (≤800 ns).

Key Specifications

Parameter	Value and Actual Design Meaning
Small-signal bandwidth	370 MHz at G = +1, ±5 V supply - supports wideband analog front-end designs up to 40 MHz for 14-bit ADC interfaces.
Slew rate	2800 V/µs (±5 V) - enables clean large-signal transient response for fast-settling applications like burst-mode receivers.
IMD3 distortion	-95 dBc at 30 MHz, 2 VPP output - ensures minimal spectral regrowth in wireless receiver chains and IF sampling systems.
OIP3	52 dBm at 30 MHz - provides high linearity for demanding RF/IF signal paths requiring dynamic range preservation.
Input voltage noise	6.8 nV/√Hz above 1 MHz - critical for low-noise preamplification before high-resolution ADCs.
VOCM control bandwidth	180 MHz - allows high-fidelity tracking of dynamically adjusted output common-mode levels in adaptive systems.
Max junction temperature	+60°C to prevent low-level oscillation - mandates thermal design review for continuous operation above ambient 55°C.

Pinout & Package

The THS4502IDR is housed in an 8-pin SOIC (D) package with standard pinout and no exposed thermal pad. Pin assignments are validated per TI SLOS352E Rev. October 2011.

Pin/Terminal	Circuit Role	Design Meaning
VIN−	Inverting input	Differential input node; accepts centered common-mode range (±3.4 V @ ±5 V supply) for balanced signal coupling.
VIN+	Non-inverting input	Differential input node; matched impedance and offset performance to VIN− for high CMRR operation.
VOCM	Output common-mode control	Analog input setting DC level of differential output pair; supports programmable biasing of downstream ADC inputs.
VS+	Positive supply	Accepts +5 V (single) or +5 V to +7.5 V (dual); internal regulation ensures stable bias under load transients.
VOUT+	Positive differential output	High-speed, low-impedance output (0.1 Ω typical) driving 50 Ω or 800 Ω loads directly into ADC or transmission lines.
PD	Power-down enable	Active-high logic input; asserts low-quiescent state (≤1.2 mA) with defined voltage thresholds and <1 µs turnoff delay.
VS−	Negative supply	Accepts 0 V (single) or −5 V to −7.5 V (dual); symmetrical rail handling enables true bipolar signal processing.
VOUT−	Negative differential output	Complementary output to VOUT+; maintains tight amplitude/phase balance (−58 dB error @ 100 kHz) for differential signaling integrity.

Key Features

Feature	Design Value
Fully differential architecture	Eliminates even-order harmonics and rejects common-mode noise, improving SNR in mixed-signal systems interfacing with differential-input ADCs.
Centered input common-mode range	±3.4 V (min) at ±5 V supply - enables direct connection to sensor outputs or DACs without level-shifting circuitry.
Output common-mode voltage control (VOCM)	Supports precise DC bias alignment to ADC reference midpoints (e.g., 2.5 V), reducing offset-induced quantization error.
Power-down capability	Reduces quiescent current from 20–31 mA to ≤1.2 mA, enabling duty-cycled operation in battery-powered or thermally constrained systems.
Wide supply range	Operates from 5 V single supply or ±5 V to ±7.5 V dual supplies - simplifies integration across diverse system voltage domains.

Applications

High Linearity ADC Preamplifier	Wireless Communication Receiver Chain
Use Scenario: Driving a 14-bit, 80 MSps ADC in a baseband receiver with 2 VPP full-scale input. IC Role / Device Role / Timing Role: Fully differential amplifier providing gain, common-mode level translation, and distortion-limited signal conditioning prior to digitization. Use Value: -95 dBc IMD3 at 30 MHz preserves SFDR > 85 dB, enabling accurate demodulation of QAM-64 signals without adjacent-channel interference.	Use Scenario: IF amplification stage in a zero-IF LTE femtocell receiver operating at 184 MHz. IC Role / Device Role / Timing Role: Single-ended-to-differential converter and gain block preceding quadrature demodulator and baseband ADC. Use Value: 370 MHz bandwidth and 52 dBm OIP3 maintain EVM < 2.5% under 20 MHz LTE channel bandwidth with 10 dBm blocker.
Single-Ended to Differential Conversion	Active Filtering of Differential Signals
Use Scenario: Converting output of a single-ended DAC (e.g., DAC3482) to differential format for driving a balun-less RF mixer. IC Role / Device Role / Timing Role: High-speed buffer and polarity-inverting stage with matched gain and phase response on both outputs. Use Value: -58 dB output balance error ensures <0.1° phase mismatch, minimizing LO leakage and image rejection degradation in direct-conversion transceivers.	Use Scenario: Implementing a 2nd-order Chebyshev low-pass filter (fc = 40 MHz) between RF front-end and ADC in radar pulse detection. IC Role / Device Role / Timing Role: Active filter core with configurable feedback network and VOCM-controlled DC bias for passband flatness optimization. Use Value: 0.1 dB gain flatness to 150 MHz ensures minimal group delay variation across pulse spectrum, preserving time-domain fidelity of short-duration returns.

High Linearity ADC Preamplifier

Wireless Communication Receiver Chain

Use Scenario: Driving a 14-bit, 80 MSps ADC in a baseband receiver with 2 VPP full-scale input.

IC Role / Device Role / Timing Role: Fully differential amplifier providing gain, common-mode level translation, and distortion-limited signal conditioning prior to digitization.

Use Value: -95 dBc IMD3 at 30 MHz preserves SFDR > 85 dB, enabling accurate demodulation of QAM-64 signals without adjacent-channel interference.

Use Scenario: IF amplification stage in a zero-IF LTE femtocell receiver operating at 184 MHz.

IC Role / Device Role / Timing Role: Single-ended-to-differential converter and gain block preceding quadrature demodulator and baseband ADC.

Use Value: 370 MHz bandwidth and 52 dBm OIP3 maintain EVM < 2.5% under 20 MHz LTE channel bandwidth with 10 dBm blocker.

Single-Ended to Differential Conversion

Active Filtering of Differential Signals

Use Scenario: Converting output of a single-ended DAC (e.g., DAC3482) to differential format for driving a balun-less RF mixer.

IC Role / Device Role / Timing Role: High-speed buffer and polarity-inverting stage with matched gain and phase response on both outputs.

Use Value: -58 dB output balance error ensures <0.1° phase mismatch, minimizing LO leakage and image rejection degradation in direct-conversion transceivers.

Use Scenario: Implementing a 2nd-order Chebyshev low-pass filter (fc = 40 MHz) between RF front-end and ADC in radar pulse detection.

IC Role / Device Role / Timing Role: Active filter core with configurable feedback network and VOCM-controlled DC bias for passband flatness optimization.

Use Value: 0.1 dB gain flatness to 150 MHz ensures minimal group delay variation across pulse spectrum, preserving time-domain fidelity of short-duration returns.

Equivalent & Alternatives

The following parts are listed as comparable options for similar fully differential amplifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
THS4503IDR	No power-down pin; otherwise identical AC/DC specs and pinout.	Preferred where continuous operation eliminates need for enable control and PCB space permits omission of PD routing.	Select THS4503IDR when power cycling is unnecessary and layout simplicity is prioritized over standby current savings.
THS4502CDR	Same device, C-temp grade (0°C to 70°C) vs I-temp grade (-40°C to 85°C); identical electrical specs.	Restricted to commercial environments; unsuitable for industrial or automotive ambient conditions.	Choose THS4502CDR only for cost-sensitive, non-extended-temperature applications with verified thermal margin below +60°C junction limit.

Compared with THS4503IDR, THS4502IDR adds power-down control at minor cost and complexity overhead; compared with THS4502CDR, it extends operational reliability across harsher thermal environments while maintaining identical signal-chain performance.

Availability

THS4502IDR is available at Aetrix Electronics and suitable for high-speed data acquisition, wireless infrastructure, test equipment, and industrial instrumentation requiring stable component supply with guaranteed long-term availability.

Supply support for THS4502IDR 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 manufacturing.

The THS4502IDR belongs to TI's high-performance fully differential amplifier product line, engineered specifically for ultra-linear, wideband signal conditioning in precision data converters and communications systems.

FAQ

What is the maximum junction temperature specification for THS4502IDR, and why is it critical?

The THS4502IDR has a maximum junction temperature limit of +60°C to prevent low-level oscillation. Exceeding this threshold may cause instability or degraded distortion performance, especially in high-power or poorly heatsinked layouts. Designers must ensure thermal resistance from junction to ambient stays within limits using appropriate copper area and airflow, particularly in sealed enclosures or multi-layer PCBs with limited thermal vias.

How does the VOCM pin function in THS4502IDR, and what is its practical design impact?

The VOCM pin on THS4502IDR sets the DC common-mode voltage of the differential output pair. When driven with a stable reference (e.g., 2.5 V), it aligns VOUT+ and VOUT− around that midpoint - essential for matching the input common-mode range of differential-input ADCs. This eliminates level-shifting components, reduces board area, and avoids errors from resistor divider inaccuracies or temperature drift in passive networks.

What are the power-down voltage thresholds for THS4502IDR under 5 V single-supply operation?

Under 5 V supply, THS4502IDR enables normal operation when PD pin voltage is ≥2.1 V and disables (enters power-down mode) when PD voltage falls ≤0.7 V. The transition region between these thresholds is undefined, so clean digital logic or Schmitt-trigger buffering is recommended to avoid metastability. Power-down current drops to ≤1.2 mA, with turnoff delay ≤800 ns and turnon delay ≤1000 ns.

Can THS4502IDR operate from a single 5 V supply, and how does performance compare to ±5 V operation?

Yes, THS4502IDR supports single 5 V supply operation with validated performance: small-signal bandwidth drops to 320 MHz (vs 370 MHz at ±5 V), slew rate reduces to 1300 V/µs, and differential output swing shrinks to ±2.6 V (referenced to 2.5 V). Input common-mode range becomes asymmetric (1.6 V to 3.4 V), requiring careful signal centering - but full functionality including VOCM control and power-down remains intact.

What is the significance of the centered input common-mode range in THS4502IDR?

The centered input common-mode range (±3.4 V min at ±5 V supply) means THS4502IDR accepts input signals symmetrically distributed around ground - unlike many amplifiers requiring positive-only or rail-to-rail biased inputs. This enables direct interface with bipolar sensors, legacy op-amp stages, or DACs with dual-rail outputs without external level-shifting, preserving signal integrity and simplifying analog front-end design.

THS4502IDR Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: -

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

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:: -

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

THS4502IDR FAQ

1.How can I place an order for THS4502IDR through Aetrix?

Please submit a Request for Quotation (RFQ) for THS4502IDR 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 THS4502IDR reliable?

The price and inventory of THS4502IDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS4502IDR is usually 5 days.

3.What payment methods are accepted for THS4502IDR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS4502IDR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for THS4502IDR?

THS4502IDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your THS4502IDR 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 THS4502IDR?

For technical support, including THS4502IDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS4502IDR requirements.

6.How does Aetrix verify that THS4502IDR is sourced from the original manufacturer or authorized distributors?

All THS4502IDR 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 THS4502IDR meets industry standards.

7.What is the process for return or replacement of THS4502IDR?

All THS4502IDR units undergo pre-shipment inspection (PSI). If there is an issue with THS4502IDR, 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 THS4502IDR part is unused and in its original packaging.

Return procedure for THS4502IDR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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