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Texas Instruments LMH6609 MDC
- Part No.:
- LMH6609 MDC
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- Die
- Datasheet:
-
LMH6609 MDC.pdf
- Description:
- IC OPAMP VFB 1 CIRCUIT DIESALE
- Quantity:
- Payment:
- Shipping:
Inventory:1,328
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Product details
Overview
LMH6609 MDC from Texas Instruments is a 900MHz unity-gain-stable voltage-feedback operational amplifier optimized for high-speed video, IF/RF amplification, and active filter applications. It delivers 1400 V/µs slew rate, 90 mA linear output current, and 0.01% differential gain / 0.026° differential phase at 4.43 MHz under ±5V supply - enabling direct driving of multiple 75Ω video loads or coaxial cables.
For engineers reviewing the LMH6609 MDC datasheet, LMH6609 MDC pinout, LMH6609 MDC application, or LMH6609 MDC equivalent, this page provides verified specifications, package mapping, real-world use cases, and validated alternative options - all grounded in TI's official SNOSA84F datasheet and production documentation.
Technical Context
The LMH6609 MDC employs voltage-feedback architecture with symmetrical, balanced inputs and matched bias currents - enabling precise DC offset control via input impedance balancing. Its unity-gain stability eliminates need for external compensation across AV = 1 configurations.
Gain-bandwidth product is 240 MHz; closed-loop bandwidth follows GBP/AV for AV ≥ 5, while large-signal bandwidth is governed by slew rate (fMAX = SR / 2πVP). Output drive capability is enhanced by low 0.3 Ω closed-loop output resistance and internal current limiting designed for sustained 90 mA linear operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| −3dB Bandwidth (AV = 1) | 900 MHz at ±5V, VOUT = 0.25 VPP - supports baseband video and wideband IF signal conditioning without gain peaking. |
| Slew Rate | 1400 V/µs (typ) - enables clean 4 VPP step response in ≤2.6 ns, critical for fast-pulse and DAC buffer applications. |
| Linear Output Current | ±90 mA - drives dual 75Ω video loads simultaneously while maintaining linearity and low distortion. |
| Differential Gain / Phase | 0.01% / 0.026° at 4.43 MHz, RL = 150Ω - meets PAL broadcast video fidelity requirements without post-compensation. |
| Voltage Noise | 3.1 nV/√Hz (>1 MHz) - preserves SNR in high-gain, wideband signal chains such as transimpedance amplifiers. |
| Supply Voltage Range | ±3.3V to ±6V - supports portable and battery-powered systems with tight rail constraints. |
| Input Offset Voltage | ±0.8 mV (max) - ensures <1 LSB error in 12-bit ADC driver applications with proper input impedance matching. |
Pinout & Package
LMH6609 MDC is a die-only product (DIESALE package), supplied unmounted on wafer or as bare die - not packaged in SOIC or SOT-23. No leadframe, no molded body, no standard surface-mount footprint. Requires custom assembly onto hybrid substrates or multi-chip modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive Supply | Accepts +3.3V to +6V; must be bypassed with 10 µF tantalum + 0.01 µF ceramic to ground for HF stability. |
| V− | Negative Supply | Accepts −3.3V to −6V; requires identical bypassing as V+ to suppress PSRR-induced distortion. |
| +IN | Non-Inverting Input | High-impedance node (1 MΩ); bias current matched to −IN within ±1 µA for DC offset minimization. |
| −IN | Inverting Input | High-impedance node; used with RF/RG feedback network to set gain per voltage-feedback topology. |
| OUTPUT | Amplified Output | Capable of sourcing/sinking ±90 mA into resistive or capacitive loads; ROUT series resistor recommended for >10 pF loads. |
Key Features
| Feature | Design Value |
|---|---|
| Voltage-feedback architecture | Enables stable operation at AV = 1 and flexible gain configuration (inverting/non-inverting) without external compensation. |
| 90 mA linear output drive | Eliminates need for external output buffers when driving multiple 75Ω video lines or ADC input networks. |
| 0.01%/0.026° differential gain/phase | Meets PAL video spec without external peaking or equalization, reducing BOM count and layout complexity. |
| 1400 V/µs slew rate | Supports full-scale 10-bit DAC outputs at >10 MSPS without slewing-induced harmonic distortion. |
| 3.1 nV/√Hz input voltage noise | Maintains >65 dB SNR in 10–100 MHz transimpedance photodiode amplifiers with 1 kΩ–10 kΩ feedback resistors. |
Applications
| Video Line Driver | IF Amplifier |
|---|---|
|
Use Scenario: Driving two parallel 75Ω composite video loads over 100 m coaxial cable in broadcast equipment. IC Role / Device Role / Timing Role: Final-stage video buffer with back-terminated gain-of-2 configuration to compensate for 6 dB loss across 75Ω termination. Use Value: Delivers 0.01% differential gain and 0.026° phase error at 4.43 MHz without external passive equalization or active peaking circuits. |
Use Scenario: Intermediate-frequency amplification in 70 MHz IF receiver chain prior to quadrature demodulation. IC Role / Device Role / Timing Role: Fixed-gain +2 non-inverting amplifier with 280 MHz −3dB bandwidth (VOUT = 2 VPP) and <−57 dBc HD3 at 20 MHz. Use Value: Preserves EVM and adjacent-channel power ratio (ACPR) in QPSK/QAM receivers by minimizing intermodulation distortion. |
| Transimpedance Amplifier | DAC Output Buffer |
|
Use Scenario: Low-noise photodiode current-to-voltage conversion in optical time-domain reflectometry (OTDR) systems. IC Role / Device Role / Timing Role: Unity-gain-stable transimpedance stage with 1 kΩ–10 kΩ RF and ½×CD CF for optimal flatness up to 100 MHz. Use Value: Achieves 3.1 nV/√Hz input-referred noise floor and 900 MHz small-signal bandwidth - enabling sub-nanosecond pulse detection resolution. |
Use Scenario: Buffering 12-bit, 100 MSPS DAC output to drive 50Ω transmission line into FPGA-based digital downconverter. IC Role / Device Role / Timing Role: Gain-of-1 buffer with 1400 V/µs slew rate and 15 ns settling to 0.05% for full-scale steps. Use Value: Prevents DAC output droop and timing skew, ensuring <0.5 LSB integral nonlinearity (INL) degradation across full Nyquist band. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH6629MA/NOPB | Higher 1.5 GHz GBW, lower 1.9 nV/√Hz noise, but only 60 mA output current and ±2.5V min supply. | Better for ultra-low-noise IF amplification; insufficient for dual-video-load driving. | Select LMH6629MA/NOPB when noise dominates over drive strength and supply rails allow ≥±2.5V. |
| THS3201DGN | Current-feedback architecture, 1.8 GHz BW, 4300 V/µs slew, but requires external compensation and has higher 5.5 nV/√Hz noise. | Superior for fixed-gain >+5 applications; unsuitable for unity-gain video buffering due to instability risk. | Choose THS3201DGN only for high-gain, high-speed inverting amplifier stages where CFB benefits outweigh noise penalty. |
Compared with LMH6609 MDC, LMH6629MA/NOPB trades output drive for lower noise and higher bandwidth, while THS3201DGN offers extreme slew rate at the cost of design complexity and reduced DC precision - making LMH6609 MDC the optimal balance for video, DAC buffering, and transimpedance use cases requiring unity-gain stability and robust load drive.
Availability
LMH6609 MDC is available at Aetrix Electronics and suitable for video distribution systems, high-speed data acquisition front-ends, and RF test equipment requiring stable component supply with traceable die-level sourcing and long-term lifecycle support.
Supply support for LMH6609 MDC 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 expertise in high-speed op amp design and manufacturing.
The LMH6609 MDC belongs to TI's LMH high-speed amplifier family, engineered specifically for demanding video, communications, and instrumentation applications where bandwidth, linearity, and output drive must coexist at minimal power.
FAQ
What is the package type of LMH6609 MDC?
LMH6609 MDC is a die-only product (DIESALE) - it is not housed in a plastic or ceramic package. It is supplied as bare silicon die on wafer or in die form for custom hybrid assembly. Unlike the SOIC (LMH6609MA/NOPB) or SOT-23 (LMH6609MF/NOPB) variants, LMH6609 MDC requires wire bonding or flip-chip integration onto substrate or module carriers.
Does LMH6609 MDC support single-supply operation?
No - LMH6609 MDC is specified exclusively for dual-supply operation from ±3.3V to ±6V. Its input common-mode range extends to the rails (V+ to V−), but the output swing is asymmetric under single-ended supplies and lacks rail-to-rail output capability. For single-supply designs, TI recommends LMH6642 or OPA695 instead.
What is the maximum capacitive load LMH6609 MDC can drive without instability?
LMH6609 MDC remains stable with up to 10 pF capacitive load when properly bypassed and laid out. For heavier loads (e.g., >10 pF), a series output resistor (ROUT) is required - TI recommends 17 Ω for 100 pF, 32 Ω for 33 pF, and 55 Ω for 10 pF (per Figure 11 and Figure 13 in SNOSA84F). ROUT value selection balances peaking (<0.5 dB) and settling time.
How does LMH6609 MDC compare to CLC440 in video applications?
LMH6609 MDC is an improved replacement for CLC440, offering 900 MHz bandwidth (vs. 600 MHz), 1400 V/µs slew rate (vs. 1000 V/µs), and superior 0.01%/0.026° differential gain/phase (vs. 0.02%/0.04°). It also consumes less supply current (7 mA vs. 12 mA) and supports wider supply range (±3.3V–±6V vs. ±5V only), making LMH6609 MDC more versatile in modern low-voltage video systems.
Can LMH6609 MDC be used in transimpedance amplifier configurations?
Yes - LMH6609 MDC is explicitly recommended by TI for transimpedance applications due to its unity-gain stability, low 3.1 nV/√Hz voltage noise, and low 1.6 pA/√Hz current noise. Its balanced input structure minimizes bias-current-induced offset drift, and its 90 mA output current supports high RF values (up to 10 kΩ) while maintaining bandwidth and stability with appropriate CF compensation.
LMH6609 MDC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- VIP10™
- Package/Case:
- Die
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 1400V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 900 MHz
- Current - Input Bias:
- 2 µA
- Voltage - Input Offset:
- 800 µV
- Current - Supply:
- 7mA
- Current - Output / Channel:
- 90 mA
- Voltage - Supply Span (Min):
- 6 V
- Voltage - Supply Span (Max):
- 12 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Diesale
LMH6609 MDC FAQ
1.How can I place an order for LMH6609 MDC through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH6609 MDC 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 LMH6609 MDC reliable?
The price and inventory of LMH6609 MDC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH6609 MDC is usually 5 days.
3.What payment methods are accepted for LMH6609 MDC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH6609 MDC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH6609 MDC?
LMH6609 MDC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH6609 MDC 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 LMH6609 MDC?
For technical support, including LMH6609 MDC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH6609 MDC requirements.
6.How does Aetrix verify that LMH6609 MDC is sourced from the original manufacturer or authorized distributors?
All LMH6609 MDC 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 LMH6609 MDC meets industry standards.
7.What is the process for return or replacement of LMH6609 MDC?
All LMH6609 MDC units undergo pre-shipment inspection (PSI). If there is an issue with LMH6609 MDC, 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 LMH6609 MDC part is unused and in its original packaging.
Return procedure for LMH6609 MDC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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