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Texas Instruments LMH6609MA/NOPB
- Part No.:
- LMH6609MA/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMH6609MA/NOPB.pdf
- Description:
- IC VOLTAGE FEEDBACK 1 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:434
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Product details
Overview
LMH6609MA/NOPB from Texas Instruments is a unity-gain-stable voltage-feedback operational amplifier optimized for high-speed video, IF/RF, and active filter applications. It delivers 900 MHz −3 dB bandwidth at AV = 1, 1400 V/µs slew rate, 90 mA linear output current, and 0.01%/0.026° differential gain/phase (PAL), enabling high-fidelity analog signal conditioning in broadcast-grade video distribution systems.
For engineers reviewing the LMH6609MA/NOPB datasheet, LMH6609MA/NOPB pinout, LMH6609MA/NOPB application, or LMH6609MA/NOPB equivalent, key selection criteria include large-signal bandwidth under ±5V supply, output drive capability into 75Ω video loads, low input offset voltage (<1 mV), and stability with capacitive loads when using recommended ROUT.
Technical Context
The LMH6609MA/NOPB employs a voltage-feedback architecture with symmetrical, balanced inputs and matched bias currents-enabling precise DC cancellation via impedance balancing. Its unity-gain stability and 240 MHz gain-bandwidth product support wide closed-loop bandwidth control across non-inverting and inverting configurations.
Designed in TI's VIP10™ process, it achieves low 3.1 nV/√Hz input voltage noise and 1.6 pA/√Hz current noise while maintaining 7 mA quiescent supply current at ±5V. The device operates over −40°C to +85°C and supports ±3.3V to ±6V supplies, with thermal resistance θJA = 145°C/W in SOIC-8 package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| −3dB Bandwidth (AV = 1) | 900 MHz - enables full-spectrum baseband video amplification up to 1080p/60 without gain roll-off |
| Slew Rate | 1400 V/µs - supports clean 4 VPP step response in ≤2.6 ns, critical for fast-pulse instrumentation |
| Linear Output Current | ±90 mA - drives multiple 75Ω video loads or long coaxial cables without clipping or distortion |
| Differential Gain / Phase | 0.01% / 0.026° - meets PAL broadcast video fidelity requirements with minimal color error |
| Input Offset Voltage | ±0.8 mV (max) - ensures <1 LSB error in 12-bit DAC buffer applications with minimal DC calibration |
| Supply Current | 7.0 mA (typ, ±5V) - enables battery-powered test equipment with >10-hour runtime on dual AA cells |
| Voltage Noise Density | 3.1 nV/√Hz - preserves SNR in low-amplitude IF amplifier stages before ADC sampling |
Pinout & Package
LMH6609MA/NOPB is housed in an 8-pin SOIC (Package D, JEDEC MS-012) with standard pinout and 1.27 mm pitch. Thermal resistance is θJA = 145°C/W and θJC = 65°C/W, supporting operation up to +85°C ambient with minimal heatsinking.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | NC | No internal connection - must be left floating or grounded per layout best practice |
| 2 | Inverting Input (−IN) | High-impedance node for feedback network; requires impedance-matched source for DC offset minimization |
| 3 | Non-Inverting Input (+IN) | High-impedance node; bias current matching with Pin 2 enables <1 µA net input error current |
| 4 | V− | Negative supply rail; requires local 10 µF tantalum + 0.01 µF ceramic bypass to ground |
| 5 | Output | Capable of sourcing/sinking ±90 mA; series ROUT resistor required for >10 pF capacitive loads |
| 6 | V+ | Positive supply rail; same bypassing as Pin 4; 0.1 µF ceramic between V+ and V− suppresses 2nd harmonic |
| 7 | NC | No internal connection - must be left floating or grounded |
| 8 | NC | No internal connection - must be left floating or grounded |
Key Features
| Feature | Design Value |
|---|---|
| Unity-gain stable voltage feedback topology | Enables direct use in buffers, integrators, and Sallen-Key filters without external compensation |
| Balanced, symmetrical inputs | Input bias currents track within ±11 nA/°C, allowing <0.5 mV offset with 1% resistor matching |
| Low 3.1 nV/√Hz voltage noise | Preserves dynamic range in 14-bit+ data acquisition front-ends operating above 10 MHz |
| 0.01% differential gain accuracy | Meets ITU-R BT.601 PAL video linearity spec without post-amplifier correction circuitry |
| ESD protection | 2000 V HBM rating allows safe handling in uncontrolled assembly environments |
Applications
| Video Line Driver | IF Amplifier |
|---|---|
|
Use Scenario: Driving multiple 75Ω coaxial cables from a single composite video source in broadcast switchers. IC Role / Device Role / Timing Role: High-current, low-distortion buffer with back-termination support and PAL-compliant differential gain. Use Value: Eliminates need for discrete emitter-follower arrays; maintains 0.01% gain flatness across 0–5.5 MHz NTSC/PAL band. |
Use Scenario: Amplifying 45 MHz IF signals in software-defined radio receivers prior to quadrature demodulation. IC Role / Device Role / Timing Role: Wideband gain block with 900 MHz small-signal bandwidth and 1400 V/µs slew rate. Use Value: Supports >20 MHz instantaneous bandwidth without group delay distortion or phase nonlinearity. |
| A/D Input Driver | Active Filter |
|
Use Scenario: Conditioning sensor outputs for 100 MSPS, 12-bit ADCs in oscilloscope front-ends. IC Role / Device Role / Timing Role: Low-noise, fast-settling driver with 15 ns settling to 0.05% for 2 V step inputs. Use Value: Prevents aperture uncertainty-induced ENOB loss; maintains >70 dB SFDR up to Nyquist. |
Use Scenario: Implementing 5th-order low-pass filters in medical ultrasound beamforming with tunable cutoff. IC Role / Device Role / Timing Role: Unity-gain-stable voltage-feedback op amp in Sallen-Key and state-variable topologies. Use Value: Enables filter Q > 5 without peaking; supports programmable cutoff up to 200 MHz with resistor trimming. |
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 bandwidth but higher 12.5 mA supply current; 2.9 nV/√Hz noise | Better suited for >1 GHz RF sampling; less optimal for battery-powered video gear | Select when >1 GHz small-signal BW is mandatory and power budget allows +5.5 mA |
| THS3201DGN | Current-feedback architecture; 1.8 GHz BW but requires careful feedback resistor selection (300Ω) | Superior pulse fidelity for radar pulse amplification; not unity-gain stable | Choose for ultra-fast transient response where gain ≥ 5 and layout-controlled feedback is feasible |
Compared with LMH6609MA/NOPB, LMH6629MA/NOPB trades 5.5 mA extra supply current for 600 MHz more bandwidth, while THS3201DGN offers faster rise time but demands current-feedback design discipline and lacks unity-gain stability-making LMH6609MA/NOPB the optimal balance for video, IF, and general-purpose high-speed buffering.
Availability
LMH6609MA/NOPB is available at Aetrix Electronics and suitable for video line driving, IF amplification, and high-speed A/D input buffering requiring stable component supply across industrial, broadcast, and test equipment programs.
Supply support for LMH6609MA/NOPB 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 delivering analog and embedded processing solutions, with over 50 years of op amp innovation and manufacturing excellence.
The LMH6609MA/NOPB belongs to TI's high-speed voltage-feedback op amp product line, engineered specifically for broadcast video, communications infrastructure, and precision instrumentation demanding wide bandwidth, low distortion, and robust output drive.
FAQ
What is the maximum usable bandwidth of LMH6609MA/NOPB in a gain-of-2 configuration?
The LMH6609MA/NOPB achieves 280 MHz −3 dB bandwidth at AV = +2 with 2 VPP output swing, and 260 MHz with 0.5 VPP. This bandwidth remains stable across temperature (−40°C to +85°C) and supports full HD video reconstruction without aliasing or group delay distortion. For larger signals, slew rate limits effective bandwidth: fMAX = SR/(2π × VP) ≈ 1400 V/µs / (2π × 2 V) ≈ 111 MHz.
Does LMH6609MA/NOPB require external compensation for unity-gain stability?
No, LMH6609MA/NOPB is internally compensated for unity-gain stability and operates reliably with AV = 1 in buffer configuration without external components. Its voltage-feedback architecture and VIP10™ process ensure phase margin >60° across all gains and load conditions, including 100 pF capacitive loads when used with the recommended 17Ω series output resistor (ROUT).
Can LMH6609MA/NOPB drive 75Ω video loads directly?
Yes, LMH6609MA/NOPB delivers ±90 mA linear output current and is explicitly characterized for 75Ω video loads. In PAL applications, it achieves 0.01% differential gain and 0.026° differential phase at 4.43 MHz with RL = 150Ω (back-terminated 75Ω). For direct 75Ω drive, configure for AV = 2 to compensate for 6 dB loss across the termination.
What is the recommended power supply bypassing for LMH6609MA/NOPB?
TI specifies 10 µF tantalum + 0.01 µF ceramic capacitors from each supply rail (V+, V−) to ground, plus an additional 0.1 µF ceramic capacitor between V+ and V− to suppress second-harmonic distortion. All capacitors must be placed within 2 mm of the respective pins, and ground traces should avoid shared return paths with digital sections to prevent noise coupling into LMH6609MA/NOPB.
Is LMH6609MA/NOPB suitable for transimpedance amplifier (TIA) applications?
Yes, LMH6609MA/NOPB is well-suited for TIA designs due to its 3.1 nV/√Hz voltage noise, 1.6 pA/√Hz current noise, unity-gain stability, and low input capacitance (1.2 pF). It supports photodiode amplification with feedback resistors up to 100 kΩ and feedback capacitance tuned to half the diode capacitance-enabling stable, low-noise current-to-voltage conversion in optical sensing and spectroscopy.
LMH6609MA/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- VIP10™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- 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:
- 8-SOIC
LMH6609MA/NOPB FAQ
1.How can I place an order for LMH6609MA/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH6609MA/NOPB 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 LMH6609MA/NOPB reliable?
The price and inventory of LMH6609MA/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH6609MA/NOPB is usually 5 days.
3.What payment methods are accepted for LMH6609MA/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH6609MA/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH6609MA/NOPB?
LMH6609MA/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH6609MA/NOPB 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 LMH6609MA/NOPB?
For technical support, including LMH6609MA/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH6609MA/NOPB requirements.
6.How does Aetrix verify that LMH6609MA/NOPB is sourced from the original manufacturer or authorized distributors?
All LMH6609MA/NOPB 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 LMH6609MA/NOPB meets industry standards.
7.What is the process for return or replacement of LMH6609MA/NOPB?
All LMH6609MA/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMH6609MA/NOPB, 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 LMH6609MA/NOPB part is unused and in its original packaging.
Return procedure for LMH6609MA/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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