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Texas Instruments LMH6654MAX/NOPB
- Part No.:
- LMH6654MAX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMH6654MAX/NOPB.pdf
- Description:
- IC VOLTAGE FEEDBACK 1 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,017
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Product details
Overview
LMH6654MAX/NOPB from Texas Instruments is a single-channel, voltage-feedback operational amplifier optimized for high-speed, low-noise signal conditioning. It delivers 250 MHz unity-gain bandwidth, 200 V/µs slew rate, 4.5 nV/√Hz input voltage noise, and ±3.6 V output swing into 100 Ω at ±5 V supply - enabling precision ADC driver and video line driver applications in portable instrumentation.
For engineers reviewing the LMH6654MAX/NOPB datasheet, LMH6654MAX/NOPB pinout, LMH6654MAX/NOPB application, or LMH6654MAX/NOPB equivalent, key selection criteria include its rail-to-rail input common-mode range (−5.15 V to +3.7 V), low 4.5 mA/channel quiescent current, and stable unity-gain operation without external compensation.
Technical Context
The LMH6654MAX/NOPB employs TI's VIP10™ complementary bipolar process to achieve voltage-feedback architecture with 250 MHz gain-bandwidth product and 50° phase margin at AV = +1. Its input stage supports true single-supply operation with 150 mV below negative rail and 1.3 V from positive rail common-mode range.
Output stage delivers 145 mA sourcing and 100 mA sinking capability into 100 Ω loads, with 0.08 Ω open-loop output resistance and 25 ns settling time to 0.01% for 2 V step. Noise performance is characterized by 4.5 nV/√Hz voltage noise and 1.7 pA/√Hz current noise above 0.1 MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Unity-Gain Bandwidth | 250 MHz - enables stable closed-loop operation at G = +1 without external compensation |
| Slew Rate | 200 V/µs - supports fast transient response for video and pulse amplification |
| Input Voltage Noise | 4.5 nV/√Hz @ f ≥ 0.1 MHz - preserves SNR in low-level sensor and pre-amp stages |
| Supply Current per Channel | 4.5 mA - balances speed and power efficiency for battery-powered systems |
| Input Common-Mode Range | −5.15 V to +3.7 V (±5 V supply) - allows direct interfacing with bipolar and single-supply sensors |
| Output Swing (RL = 100 Ω) | −3.6 V to +3.4 V - delivers full-scale dynamic range into standard 100 Ω video and test loads |
| Settling Time (0.01%) | 25 ns for 2 V step - meets timing requirements of 10+ MS/s data acquisition systems |
Pinout & Package
LMH6654MAX/NOPB is housed in an 8-pin SOIC package (4.90 mm × 3.91 mm body size) with standard op-amp pinout and no internal connections on pins 1, 5, and 8.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Output | Amplified signal output; capable of ±3.6 V swing into 100 Ω with 145 mA sourcing / 100 mA sinking |
| 2 | Inverting Input | Differential input node; accepts feedback network for precise gain control and stability |
| 3 | Non-inverting Input | Reference input node; supports bias current cancellation via Rseq matching |
| 4 | Negative Supply | Connects to V− rail; supports operation down to −2.5 V (±2.5 V supply minimum) |
| 5 | No Connection | Internally unconnected; must be left floating or tied to ground per layout best practices |
| 6 | No Connection | Internally unconnected; no electrical function; avoid routing signals nearby |
| 7 | Positive Supply | Connects to V+ rail; supports operation up to +6 V (±6 V supply maximum) |
| 8 | No Connection | Internally unconnected; electrically isolated; PCB pad may be used for thermal relief |
Key Features
| Feature | Design Value |
|---|---|
| Voltage Feedback Architecture | Enables predictable frequency response and stable unity-gain operation without external compensation |
| Rail-to-Rail Input Capability | Supports input voltages 150 mV below V− and within 1.3 V of V+, simplifying level-shifting in mixed-supply systems |
| Low Power–High Speed Trade-off | Delivers 250 MHz bandwidth at only 4.5 mA supply current - ideal for portable high-fidelity signal chains |
| Low Distortion Performance | −80 dBc second-harmonic distortion at 5 MHz ensures fidelity in video and communications baseband paths |
| Robust Output Drive | Drives 100 Ω loads with <25 ns settling and >100 mA sink/source - suitable for coaxial cable termination |
Applications
| ADC Driver | Consumer Video |
|---|---|
|
Use Scenario: Driving the input of a 12-bit, 10 MS/s SAR ADC in a portable medical sensor front-end. IC Role / Device Role / Timing Role: Buffer and level-shift analog sensor output while preserving bandwidth and minimizing noise contribution. Use Value: 4.5 nV/√Hz input voltage noise and 25 ns settling ensure <0.5 LSB noise floor and accurate sampling window alignment. |
Use Scenario: Amplifying composite NTSC video signals in set-top box output stage before 75 Ω coaxial transmission. IC Role / Device Role / Timing Role: High-fidelity voltage gain stage with DC-coupled output and minimal differential gain/phase error. Use Value: 0.01% DG and 0.025° DP at NTSC frequencies maintain color fidelity and reduce chroma crosstalk. |
| Active Filter | Pulse Delay Circuit |
|
Use Scenario: Implementing a 5th-order Butterworth low-pass filter at 50 MHz cutoff in RF test equipment signal path. IC Role / Device Role / Timing Role: Gain block in multiple-feedback (MFB) topology with precise pole placement and minimal phase shift. Use Value: 250 MHz GBWP and 50° phase margin ensure filter response matches theoretical transfer function up to 0.9× cutoff. |
Use Scenario: Generating precisely timed 10 ns delay pulses for time-of-flight measurement in industrial laser rangefinders. IC Role / Device Role / Timing Role: Fast-settling inverting amplifier configured as fixed-gain delay element with matched trace routing. Use Value: 1.2 ns fall time and 25 ns 0.01% settling enable sub-nanosecond edge jitter control in critical timing paths. |
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 GBWP but 8.5 mA supply current; 2.9 nV/√Hz noise; requires external compensation for unity-gain | Better suited for RF IF amplification >100 MHz; less optimal for low-power portable ADC drivers | Select when bandwidth >500 MHz is required and power budget allows >8 mA/channel |
| THS3201DGN | Current-feedback architecture; 1.8 GHz bandwidth; 1.8 nV/√Hz noise; 12 mA supply current; not unity-gain stable | Optimized for fixed-gain >+2 video distribution; incompatible with G = +1 configurations without redesign | Choose for high-gain, high-frequency video distribution where input impedance matching is secondary |
Compared with LMH6654MAX/NOPB, LMH6629MA/NOPB trades 3.8× higher power for 6× bandwidth and lower noise, while THS3201DGN offers superior speed and noise at 2.7× supply current and requires non-unity-gain circuit rework - making LMH6654MAX/NOPB the optimal balance for portable, unity-gain-stable, low-noise applications.
Availability
LMH6654MAX/NOPB is available at Aetrix Electronics and suitable for ADC driver, consumer video, active filter, and pulse delay applications requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for LMH6654MAX/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 and embedded processing technologies, with over 50 years of innovation in high-performance amplifiers and data converters.
The LMH6654MAX/NOPB belongs to TI's LMH high-speed amplifier family, designed specifically for low-noise, unity-gain-stable signal conditioning in portable instrumentation, video infrastructure, and test equipment.
FAQ
What is the operating supply voltage range for LMH6654MAX/NOPB?
The LMH6654MAX/NOPB operates from ±2.5 V to ±6 V dual supply, or from a single 5 V supply (V+ = 5 V, V− = 0 V). At ±5 V, it achieves full 250 MHz bandwidth and 200 V/µs slew rate; at ±2.5 V, bandwidth reduces to 230 MHz but maintains functional stability and low distortion. The device is not rated for supplies exceeding ±6 V or below ±2.5 V.
Does LMH6654MAX/NOPB support rail-to-rail input and output operation?
LMH6654MAX/NOPB supports rail-to-rail input operation - its input common-mode range extends 150 mV below V− and within 1.3 V of V+. However, output swing is not rail-to-rail: into 100 Ω, it delivers −3.6 V to +3.4 V with ±5 V supplies, and 1.1 V to 3.7 V with 5 V single supply. Full rail-to-rail output requires different amplifier families like TLVx170.
Can LMH6654MAX/NOPB drive capacitive loads directly?
LMH6654MAX/NOPB exhibits reduced phase margin with capacitive loads >10 pF, risking overshoot or oscillation. TI recommends adding a 50 Ω isolation resistor between output and load for initial evaluation. For 100 pF loads, 100–200 Ω isolation resistance is typical. The LMH6654MAX/NOPB datasheet provides RISO vs. CL curves (Figure 39) to select optimal damping.
What is the input bias current specification for LMH6654MAX/NOPB?
At ±5 V supply and 25°C, LMH6654MAX/NOPB has a typical input bias current of 5 µA, with limits of 12 µA maximum (VCM = 0 V). Bias current increases with temperature and common-mode voltage - reaching ~7 µA at 85°C. For precision DC applications, use bias current cancellation resistors (Rg || Rf = Rseq) as described in Section 7.2.2.1 of the LMH6654 datasheet.
Is LMH6654MAX/NOPB pin-compatible with other TI high-speed op-amps?
LMH6654MAX/NOPB uses standard 8-pin SOIC op-amp pinout (output, −in, +in, V−, NC, NC, V+, NC), matching industry conventions but not pin-for-pin compatible with LMH6629, THS3201, or OPA695 due to differing internal connections and NC pin assignments. Always verify pin functions using the LMH6654MAX/NOPB-specific pin table (Section 5 of SNOS956E) before board reuse.
LMH6654MAX/NOPB 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:
- Voltage Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 200V/µs
- Gain Bandwidth Product:
- 260 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 5 µA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 4.5mA
- Current - Output / Channel:
- 120 mA
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 12 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
LMH6654MAX/NOPB FAQ
1.How can I place an order for LMH6654MAX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH6654MAX/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 LMH6654MAX/NOPB reliable?
The price and inventory of LMH6654MAX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH6654MAX/NOPB is usually 5 days.
3.What payment methods are accepted for LMH6654MAX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH6654MAX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH6654MAX/NOPB?
LMH6654MAX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH6654MAX/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 LMH6654MAX/NOPB?
For technical support, including LMH6654MAX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH6654MAX/NOPB requirements.
6.How does Aetrix verify that LMH6654MAX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMH6654MAX/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 LMH6654MAX/NOPB meets industry standards.
7.What is the process for return or replacement of LMH6654MAX/NOPB?
All LMH6654MAX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMH6654MAX/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 LMH6654MAX/NOPB part is unused and in its original packaging.
Return procedure for LMH6654MAX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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