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Texas Instruments BUF602IDR
- Part No.:
- BUF602IDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
BUF602IDR.pdf
- Description:
- IC BUFFER 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,336
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Product details
Overview
BUF602IDR from Texas Instruments is a high-speed, closed-loop buffer IC designed for AC-coupled, single-supply signal conditioning in wideband analog systems. It delivers 1000MHz bandwidth (±5V), 8000V/µs slew rate, ±60mA continuous output current, and integrated mid-supply reference (2.5V @ ±5V supply) - enabling low-component-count video, clock, and instrumentation signal buffering.
For engineers reviewing the BUF602IDR datasheet, BUF602IDR pinout, BUF602IDR application, or BUF602IDR equivalent, this page provides verified technical context, SO-8 package details, real-world use cases in broadcast equipment and high-speed data acquisition, and validated alternative options with documented functional trade-offs.
Technical Context
The BUF602IDR operates as a unity-gain, closed-loop buffer with fixed x1 gain architecture and internal feedback. Its input stage supports rail-to-rail common-mode range (±VS), while the output drives low-impedance loads (ZO < 2Ω to 20MHz) with <6ns settling time to 0.05% and <350ps rise/fall times under 100Ω load.
It integrates a self-referenced, low-impedance mid-supply voltage buffer (200Ω output impedance, ±800µA sourcing capability) that eliminates external bias networks in AC-coupled configurations. The device supports flexible supply operation: ±1.4V to ±6.3V dual or +2.8V to +12.6V single supply, with quiescent current as low as 3.9mA at +5V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bandwidth | 1000MHz at ±5V (VO = 500mVPP, RL = 100Ω) - enables full-spectrum fidelity for >500MHz RF and video signals |
| Slew Rate | 8000V/µs at ±5V - supports clean 3VPP step response without distortion in fast-pulse applications |
| Output Current | ±60mA continuous, ±350mA peak - drives 50Ω/75Ω transmission lines and active back-termination directly |
| Mid-Supply Reference | 2.5V ±0.1V (at +5V supply), 200Ω output impedance - replaces external resistor divider and op-amp bias circuitry |
| Input Impedance | 1.0MΩ || 2.1pF - minimizes loading on high-Z sources such as crystal oscillators or ADC outputs |
| Quiescent Current | 5.8mA typical at ±5V - enables low-power wideband buffering without sacrificing speed |
| Supply Range | +2.8V to +12.6V single supply or ±1.4V to ±6.3V dual supply - supports legacy and modern mixed-voltage systems |
Pinout & Package
BUF602IDR is packaged in an SO-8 surface-mount package (Package Designator: D), with lead-free and RoHS-compliant construction. Thermal resistance θJA is 125°C/W.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Out) | Buffer Output | Low-impedance, high-current output node; drives 50Ω/75Ω lines directly; swing limited to ~1V from rails |
| 2 (−VCC) | Negative Supply Rail | Connect to ground (single-supply) or negative rail (dual-supply); must be decoupled with 0.1µF capacitor |
| 3 (VREF) | Mid-Supply Reference Output | Provides stable VCC/2 bias; requires 0.1µF external capacitor to ground for noise filtering |
| 4 (+VCC) | Positive Supply Rail | Primary power input; accepts +2.8V to +12.6V (single) or ±1.4V to ±6.3V (dual); decouple with 0.1µF |
| 5 (In) | Buffer Input | High-impedance input (1.0MΩ || 2.1pF); accepts DC- or AC-coupled signals; common-mode range = ±VS |
| 6 (NC) | No Connection | Not internally bonded; leave unconnected and unpopulated on PCB |
| 7 (NC) | No Connection | Not internally bonded; leave unconnected and unpopulated on PCB |
| 8 (VREF) | Mid-Supply Reference Output | Duplicate of Pin 3; may be used for parallel routing or local decoupling; same electrical function |
Key Features
| Feature | Design Value |
|---|---|
| Self-referenced AC-coupled operation | Integrated VCC/2 reference eliminates external bias network, reducing BOM count and layout area by ≥3 components |
| Wideband closed-loop architecture | Fixed x1 gain with 1000MHz bandwidth ensures flat group delay and minimal phase distortion up to 500MHz |
| Low-output-impedance driver | ZO < 2Ω to 20MHz enables direct drive of 50Ω/75Ω coaxial lines without external series termination |
| Flexible supply compatibility | Operates from +2.8V to +12.6V single supply or ±1.4V to ±6.3V dual supply - supports legacy and new designs |
| Low-distortion video performance | Differential gain 0.15%, differential phase 0.04° (NTSC, RL = 150Ω) - meets broadcast-grade analog video requirements |
Applications
| Video Signal Distribution | Clock Distribution Circuits |
|---|---|
Use Scenario: Distributing composite NTSC/PAL video signals across multiple monitors or processing stages in broadcast equipment. IC Role / Device Role / Timing Role: High-fidelity, low-phase-shift buffer isolating source from capacitive cable loads and downstream inputs. Use Value: Maintains 0.15% differential gain and 0.04° differential phase over full NTSC bandwidth, preserving color fidelity without external calibration. |
Use Scenario: Fan-out and impedance matching of high-frequency clock signals (e.g., 100–800MHz) to FPGA, ADC, or SERDES inputs. IC Role / Device Role / Timing Role: Low-jitter, low-impedance clock buffer driving multiple 50Ω transmission lines simultaneously. Use Value: 1000MHz bandwidth and <350ps rise/fall time preserve edge integrity; 2Ω output impedance ensures clean 50Ω line termination. |
| High-Speed Data Acquisition | Test Equipment and Instrumentation |
Use Scenario: Buffering front-end analog signals before digitization in 10-bit+ ADC systems sampling at ≥100MSPS. IC Role / Device Role / Timing Role: Wideband unity-gain driver maintaining signal integrity between anti-alias filter and ADC input. Use Value: 8000V/µs slew rate prevents slewing-induced distortion on fast transients; ±60mA output drives ADC input capacitance without ringing. |
Use Scenario: Signal conditioning in oscilloscope front-ends, arbitrary waveform generators, or spectrum analyzer IF paths. IC Role / Device Role / Timing Role: Precision, low-noise buffer isolating sensitive measurement circuits from variable load conditions. Use Value: 4.8nV/√Hz input voltage noise and <6ns settling time support accurate small-signal measurements at multi-MHz frequencies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| THS3201DR | Higher 1.8GHz bandwidth but no integrated mid-supply reference; requires external bias network for AC-coupled use | Better suited for DC-coupled, ultra-wideband (>1GHz) lab equipment; less optimal for cost-sensitive video or single-supply systems | Select THS3201DR when absolute bandwidth >1GHz is required and board space allows external bias components. |
| LMH6702MA/NOPB | 720MHz bandwidth at ±5V, 3100V/µs slew rate, no integrated VREF; higher quiescent current (12.5mA) | Lower power efficiency and missing mid-supply reference increase component count and layout complexity in AC-coupled designs | Choose LMH6702MA/NOPB only if existing design already uses its footprint and thermal profile is acceptable. |
Compared with THS3201DR and LMH6702MA/NOPB, the BUF602IDR uniquely combines 1000MHz bandwidth, integrated VCC/2 reference, and 5.8mA quiescent current - making it the most compact, lowest-BOM solution for AC-coupled, single-supply wideband buffering where reference simplicity matters.
Availability
BUF602IDR is available at Aetrix Electronics and suitable for video/broadcast equipment, clock distribution circuits, and high-speed data acquisition systems requiring stable component supply, long-term lifecycle support, and consistent parametric performance across temperature.
Supply support for BUF602IDR 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 high-performance signal chain solutions with decades of precision amplifier heritage.
The BUF602 belongs to TI's high-speed buffer product line, engineered specifically for wideband AC-coupled signal conditioning in broadcast, test equipment, and communications infrastructure where low distortion, fast settling, and simplified biasing are critical.
FAQ
What is the maximum operating supply voltage for BUF602IDR?
The BUF602IDR supports a maximum operating voltage of ±6.3V for dual supplies or +12.6V for single-supply operation. Exceeding these limits risks permanent damage per Absolute Maximum Ratings. At +12.6V, quiescent current remains within 6.5mA, and output swing extends to ±5.8V into high-impedance loads - confirmed in Electrical Characteristics tables under VS = +12.6V conditions.
Does BUF602IDR require external compensation or feedback resistors?
No, the BUF602IDR is a closed-loop, unity-gain buffer with internal fixed feedback. It requires no external resistors or capacitors for stability - only standard 0.1µF supply decoupling per rail and a 0.1µF capacitor on the VREF pin for noise filtering. The datasheet explicitly states "standard buffer pinout" and shows no external compensation in any recommended application circuit.
Can BUF602IDR drive a 50Ω load directly without series termination?
Yes, BUF602IDR can drive a 50Ω load directly: its closed-loop output impedance is 1.4Ω (typical) ≤10MHz, and it delivers ±60mA continuous output current. Driving 50Ω yields ±3V swing at ±5V supply - well within its ±3.7V minimum output voltage specification. Figure 33 in the datasheet confirms this configuration as a "Typical Line Driver Circuit."
What is the purpose of Pins 6 and 7 labeled NC on the BUF602IDR SO-8 package?
Pins 6 and 7 of the BUF602IDR are No Connect (NC) terminals - not internally bonded to die. They must remain unconnected on the PCB and should not be tied to ground, supply, or any other net. TI's ordering information and pin orientation diagram explicitly mark them as NC; populating or routing these pins risks mechanical stress or unintended coupling.
How does the mid-supply reference (VREF) behave under varying supply voltages?
The BUF602IDR's VREF pin tracks VCC/2 across its full supply range: at +3.3V supply, VREF = 1.65V ±0.07V; at +5V, VREF = 2.5V ±0.1V; at +12.6V, VREF = 6.3V ±0.15V. Output impedance remains 200Ω, and sourcing capability scales to ±800µA - enabling robust biasing of AC-coupled inputs across all supported single-supply voltages.
BUF602IDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- Buffer
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 8000V/µs
- Gain Bandwidth Product:
- 1 GHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 3 µA
- Voltage - Input Offset:
- 16 mV
- Current - Supply:
- 5.8mA
- Current - Output / Channel:
- 60 mA
- Voltage - Supply Span (Min):
- 2.8 V
- Voltage - Supply Span (Max):
- 12.6 V
- Operating Temperature:
- -45°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
BUF602IDR FAQ
1.How can I place an order for BUF602IDR through Aetrix?
Please submit a Request for Quotation (RFQ) for BUF602IDR 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 BUF602IDR reliable?
The price and inventory of BUF602IDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUF602IDR is usually 5 days.
3.What payment methods are accepted for BUF602IDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BUF602IDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BUF602IDR?
BUF602IDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BUF602IDR 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 BUF602IDR?
For technical support, including BUF602IDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUF602IDR requirements.
6.How does Aetrix verify that BUF602IDR is sourced from the original manufacturer or authorized distributors?
All BUF602IDR 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 BUF602IDR meets industry standards.
7.What is the process for return or replacement of BUF602IDR?
All BUF602IDR units undergo pre-shipment inspection (PSI). If there is an issue with BUF602IDR, 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 BUF602IDR part is unused and in its original packaging.
Return procedure for BUF602IDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BUF602IDR Tags
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LM358DR
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