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Texas Instruments LMH6609MF/NOPB
- Part No.:
- LMH6609MF/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LMH6609MF/NOPB.pdf
- Description:
- IC OPAMP VFB 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,550
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Product details
Overview
LMH6609MF/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 (±5 V supply), 1400 V/µs slew rate, 90 mA linear output current, and 0.01%/0.026° differential gain/phase performance - enabling direct driving of multiple 75 Ω video loads or coaxial cables.
For engineers reviewing the LMH6609MF/NOPB datasheet, LMH6609MF/NOPB pinout, LMH6609MF/NOPB application, or LMH6609MF/NOPB equivalent, this page provides verified specifications, SOT-23-5 package details, real-world video and transimpedance use cases, and two validated alternative op amps with documented functional trade-offs.
Technical Context
The LMH6609MF/NOPB employs a voltage-feedback architecture with symmetrical, balanced inputs and matched input bias currents - enabling precise DC offset cancellation via impedance balancing. Its 240 MHz gain-bandwidth product (GBP) supports stable closed-loop operation down to unity gain without external compensation.
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 ±5 V. The device operates across −40°C to +85°C and supports ±3.3 V to ±6 V supplies, with thermal resistance θJA = 187°C/W in the SOT-23 package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| −3 dB Bandwidth (AV = 1) | 900 MHz at ±5 V, VOUT = 0.25 VPP - enables baseband video and wideband IF signal amplification without gain peaking. |
| Slew Rate | 1400 V/µs (typical, ±5 V) - supports clean 4 VPP step response in ≤2.6 ns, critical for fast-pulse and DAC buffer applications. |
| Linear Output Current | ±90 mA - drives dual 75 Ω video loads simultaneously or sustains 100 Ω loads at 2 VPP with minimal distortion. |
| Differential Gain / Phase | 0.01% / 0.026° at 4.43 MHz, RL = 150 Ω - meets PAL broadcast video fidelity requirements without post-compensation. |
| Input Voltage Noise | 3.1 nV/√Hz (>1 MHz) - preserves SNR in transimpedance and low-level analog front-end designs. |
| Supply Current | 7.0 mA (typical, ±5 V, no load) - balances speed and power efficiency for portable or thermally constrained systems. |
| Input Offset Voltage | ±0.8 mV (max, ±5 V) - ensures <1 LSB error in 12-bit ADC driver configurations with proper input impedance matching. |
Pinout & Package
LMH6609MF/NOPB is housed in a 5-pin SOT-23 package (TI package code DBV), with exposed pad not electrically connected. The compact 2.9 mm × 1.6 mm footprint supports high-density PCB layouts and RF-sensitive routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - V− | Negative supply rail | Accepts −3.3 V to −6 V; requires local 10 µF + 0.01 µF bypassing to ground for stability at >100 MHz. |
| 2 - IN− | Inverting input | High-impedance node; bias current matched to IN+ (±2 µA max); requires impedance-matched source or RB for DC offset minimization. |
| 3 - OUT | Amplifier output | Capable of ±90 mA linear drive; series ROUT (e.g., 51 Ω) recommended when driving >10 pF capacitive loads to suppress peaking. |
| 4 - IN+ | Non-inverting input | High-impedance, symmetrical to IN−; matched bias current enables <1 mV offset with balanced source impedances. |
| 5 - V+ | Positive supply rail | Accepts +3.3 V to +6 V; same bypassing requirements as V−; 0.1 µF ceramic cap between V+ and V− suppresses second-harmonic distortion. |
Key Features
| Feature | Design Value |
|---|---|
| Voltage-feedback architecture | Enables predictable closed-loop bandwidth (≈ GBP/AV) and stable integrator/active filter design without current-feedback limitations. |
| Unity-gain stability | Operates robustly at AV = 1 without external compensation - essential for buffer, cable driver, and transimpedance configurations. |
| Matched input bias currents | Reduces input offset drift to <4 µV/°C; allows DC accuracy optimization via simple resistor balancing on both inputs. |
| Low-noise transimpedance capability | 3.1 nV/√Hz voltage noise + 1.6 pA/√Hz current noise enable high-gain photodiode amplifiers with minimal signal degradation. |
| Video-optimized linearity | 0.01% DG / 0.026° DP at 4.43 MHz ensures broadcast-grade composite video signal integrity without external correction networks. |
Applications
| Video Line Driver | IF/RF Amplifier |
|---|---|
|
Use Scenario: Driving dual 75 Ω coaxial cables from a single PAL video source with back-termination. IC Role / Device Role / Timing Role: Unity-gain buffer with 90 mA output drive, compensating for cable loss while preserving differential gain/phase fidelity. Use Value: Eliminates need for discrete emitter followers or transformer coupling; maintains 0.01% differential gain across full 0–5.5 MHz PAL bandwidth. |
Use Scenario: Amplifying 70 MHz IF signals in software-defined radio receivers prior to ADC sampling. IC Role / Device Role / Timing Role: Fixed-gain (AV = 2) non-inverting amplifier with 280 MHz −3 dB bandwidth and 1400 V/µs slew rate. Use Value: Preserves signal integrity for 12-bit ADCs sampling at 100 MSPS; HD2/HD3 remain below −63/−57 dBc at 20 MHz. |
| Transimpedance Amplifier | A/D Input Driver |
|
Use Scenario: Converting photocurrent from a 5 pF PIN diode in optical sensing, with 10 kΩ transimpedance gain. IC Role / Device Role / Timing Role: Low-noise, unity-gain-stable TIA with 3.1 nV/√Hz input noise and 1.6 pA/√Hz current noise. Use Value: Achieves >70 dB dynamic range at 1 MHz; feedback capacitor (5 pF) stabilizes response without sacrificing bandwidth. |
Use Scenario: Buffering and level-shifting a 0–2.5 V DAC output to drive a 100 Ω, 12-bit SAR ADC input with 100 ns settling. IC Role / Device Role / Timing Role: High-speed voltage follower with 15 ns settling time to 0.05% and ±3.5 V output swing into 100 Ω. Use Value: Prevents DAC output loading errors and ensures monotonicity; 900 MHz bandwidth avoids phase lag-induced sampling skew. |
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; requires ±5 V min; not unity-gain stable (needs ≥AV = 5). | Better for >500 MHz IF gain stages; unsuitable for unity-gain video buffers or transimpedance circuits. | Select LMH6629MA/NOPB only when bandwidth >1 GHz is mandatory and gain ≥5 is acceptable. |
| THS3201DGN | Current-feedback architecture; 1.8 GHz bandwidth; 2100 V/µs slew rate; higher 15 mA supply current; 10.5 nV/√Hz noise. | Superior large-signal transient response but poorer DC accuracy (±3 mV VOS) and no differential video specs. | Choose THS3201DGN for ultra-fast pulse amplification where DC precision and video linearity are secondary. |
Compared with LMH6609MF/NOPB, LMH6629MA/NOPB trades unity-gain stability and low power for higher bandwidth, while THS3201DGN sacrifices DC fidelity and video linearity for raw speed - making LMH6609MF/NOPB the optimal choice for video, transimpedance, and unity-gain-critical designs.
Availability
LMH6609MF/NOPB is available at Aetrix Electronics and suitable for video line drivers, IF/RF amplifiers, and A/D input buffers requiring stable component supply, consistent SOT-23-5 packaging, and guaranteed −40°C to +85°C operation.
Supply support for LMH6609MF/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 specializing in analog, embedded processing, and high-performance signal chain solutions, with over 50 years of op amp innovation.
The LMH6609MF/NOPB belongs to TI's LMH high-speed voltage-feedback op amp family, engineered specifically for broadcast video, instrumentation, and wideband communications where unity-gain stability, low distortion, and high output drive are essential.
FAQ
What is the maximum small-signal bandwidth of LMH6609MF/NOPB at unity gain?
The LMH6609MF/NOPB achieves a guaranteed 900 MHz −3 dB bandwidth at AV = 1 under ±5 V supply conditions with VOUT = 0.25 VPP. This specification is measured per TI's SNOSA84F datasheet and reflects its voltage-feedback architecture optimized for wideband unity-gain operation. At lower supply voltages (±3.3 V), bandwidth reduces to 450 MHz.
Can LMH6609MF/NOPB drive a 75 Ω video load directly?
Yes - the LMH6609MF/NOPB delivers ±90 mA linear output current, enabling direct drive of one 75 Ω load (±3.5 V swing) or two paralleled 75 Ω loads (±1.75 V swing) while maintaining 0.01% differential gain and 0.026° differential phase at 4.43 MHz. For best results, use back-termination and configure for AV = 2 to compensate for the 6 dB loss.
What is the recommended feedback resistor value for LMH6609MF/NOPB in a gain-of-2 configuration?
Texas Instruments specifies 250 Ω as the optimal feedback resistor (RF) for LMH6609MF/NOPB at AV = +2 or −1. Using RF = 250 Ω with RG = 250 Ω (non-inverting) or RG = 250 Ω (inverting) ensures minimal pulse response ringing, flat frequency response, and low thermal noise - deviating significantly from this value degrades stability and bandwidth.
Does LMH6609MF/NOPB require external compensation for unity-gain stability?
No - the LMH6609MF/NOPB is internally compensated for unity-gain stability across its full operating temperature range (−40°C to +85°C). Unlike many high-speed op amps, it does not require external capacitors or gain-setting constraints to maintain phase margin, making it suitable for buffer, active filter, and transimpedance applications without added components.
What thermal considerations apply to LMH6609MF/NOPB in SOT-23 packaging?
The LMH6609MF/NOPB in SOT-23 has θJA = 187°C/W. At 7 mA supply current and ±5 V, quiescent power dissipation is ~70 mW; with full ±90 mA output drive into 100 Ω, power can exceed 400 mW. To avoid exceeding 150°C junction temperature, limit ambient temperature or add copper pour under the exposed pad - though the pad is not electrically connected, it aids conduction cooling.
LMH6609MF/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- VIP10™
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- 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:
- SOT-23-5
LMH6609MF/NOPB FAQ
1.How can I place an order for LMH6609MF/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH6609MF/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 LMH6609MF/NOPB reliable?
The price and inventory of LMH6609MF/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH6609MF/NOPB is usually 5 days.
3.What payment methods are accepted for LMH6609MF/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH6609MF/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH6609MF/NOPB?
LMH6609MF/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH6609MF/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 LMH6609MF/NOPB?
For technical support, including LMH6609MF/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH6609MF/NOPB requirements.
6.How does Aetrix verify that LMH6609MF/NOPB is sourced from the original manufacturer or authorized distributors?
All LMH6609MF/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 LMH6609MF/NOPB meets industry standards.
7.What is the process for return or replacement of LMH6609MF/NOPB?
All LMH6609MF/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMH6609MF/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 LMH6609MF/NOPB part is unused and in its original packaging.
Return procedure for LMH6609MF/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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