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Texas Instruments LMH6732MFX/NOPB
- Part No.:
- LMH6732MFX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-6
- Datasheet:
-
LMH6732MFX/NOPB.pdf
- Description:
- IC OPAMP CFA 1 CIRCUIT SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,690
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Product details
Overview
LMH6732MFX/NOPB from Texas Instruments is a current-feedback operational amplifier with adjustable supply current (0.5–12 mA), 540 MHz −3dB bandwidth at 9 mA, 2700 V/µs slew rate, and fast enable/disable (20 ns turn-on). It operates on ±4.5V to ±6V supplies and delivers ±115 mA output drive, making it suitable for high-speed video switching matrices and remote-site battery-powered instrumentation.
For engineers reviewing the LMH6732MFX/NOPB datasheet, LMH6732MFX/NOPB pinout, LMH6732MFX/NOPB application, or LMH6732MFX/NOPB equivalent, key selection criteria include supply-current tunability via RP resistor, popless enable (15 mV glitch), ultra-low shutdown current (<1 µA), and SOT-23-6 package compatibility with space-constrained RF and portable test systems.
Technical Context
The LMH6732MFX/NOPB implements a current-feedback architecture with an external resistor (RP) controlling bias current into the ICC SET block, directly scaling bandwidth, slew rate, and output drive. Its non-inverting input features 4.7 MΩ resistance and 1.8 pF capacitance, while the inverting input connects to a low-impedance current-summing node enabling wideband gain stability.
Enable/disable is achieved by modulating RP current, yielding 20 ns turn-on and 9 ns turn-off with <50 mV output glitch. The device maintains unity-gain stability and exhibits <0.15 dB frequency response rolloff up to 200 MHz at ICC = 9 mA, supporting precise analog signal routing in multi-channel video and phased-array radar front ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| −3dB Bandwidth | 540 MHz at ICC = 9 mA, 2 VPP - enables baseband video and IF signal amplification up to UHF |
| Slew Rate | 2700 V/µs at ICC = 9 mA - supports clean 5-V step transitions in <2 ns without slewing distortion |
| Supply Current Range | 0.5–12 mA via RP resistor - allows dynamic power/performance trade-off across battery life and speed requirements |
| Turn-on Time | 20 ns to 90% of full output - ensures minimal disruption during multiplexed signal path switching |
| Shutdown Current | <1 µA - reduces system standby power in portable instrumentation and remote sensors |
| Differential Gain/Phase | 0.025%/0.010° at 4.43 MHz, RL = 150 Ω - meets PAL/NTSC video fidelity standards |
| Input Voltage Noise | 2.5 nV/√Hz at ICC = 9 mA - preserves SNR in low-amplitude, wideband signal conditioning stages |
Pinout & Package
LMH6732MFX/NOPB is packaged in a 6-pin SOT-23 (DBV) surface-mount package with 0.95 mm pitch, 2.9 mm × 1.6 mm footprint, and exposed thermal pad (not electrically connected). Pin 1 is marked with a dot; pin numbering follows standard SOT-23 orientation (pin 1 = top-left, pin 6 = bottom-right).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive supply rail | Accepts +4.5V to +6V; decoupling required within 5 mm for stable high-frequency operation |
| V− | Negative supply rail | Accepts −4.5V to −6V; separate ground plane recommended to minimize PSRR degradation |
| +IN | Non-inverting input | High-impedance node (4.7 MΩ, 1.8 pF); sensitive to layout parasitics above 100 MHz |
| −IN | Inverting input | Low-impedance current-summing node; requires matched trace length to feedback network |
| OUT | Amplified output | Capable of ±115 mA into 100 Ω; output resistance is 32 mΩ at ICC = 9 mA |
| RP | Supply current control terminal | Current-sink node setting ICC via external resistor; open-circuit disables amplifier |
Key Features
| Feature | Design Value |
|---|---|
| Single-resistor supply current tuning | RP adjusts ICC continuously from 0.5 mA to 12 mA, enabling real-time optimization of bandwidth vs. power |
| Popless enable | 15 mV max output glitch on turn-on at ICC = 1 mA - eliminates audible click/noise in audio-adjacent signal paths |
| Fast enable/disable | 20 ns turn-on / 9 ns turn-off - supports >50 MHz multiplexing rates in ATE and video switchers |
| Unity-gain stable | No external compensation required for AV ≥ +1 configurations - simplifies layout and reduces BOM count |
| Improved CLC505/CLC449 replacement | Pin-compatible upgrade with higher bandwidth (540 MHz vs. 200 MHz), lower THD (−79.6 dBc), and adjustable ICC |
Applications
| Video Switching Matrix | Battery-Powered Test Instrumentation |
|---|---|
|
Use Scenario: Routing multiple SD/HD video sources to shared display or recording hardware with minimal crosstalk and timing skew. IC Role / Device Role / Timing Role: High-speed buffer and gain stage in each channel's signal path, enabling simultaneous switching of 8+ channels at frame-rate boundaries. Use Value: 0.025%/0.010° DG/DP and 540 MHz bandwidth preserve color fidelity and edge sharpness across PAL/NTSC signals without post-processing correction. |
Use Scenario: Portable oscilloscope front-end or handheld spectrum analyzer requiring low power, high linearity, and rapid channel enable/disable. IC Role / Device Role / Timing Role: Programmable-gain amplifier and signal conditioner before ADC sampling, with ICC dynamically scaled to measurement bandwidth. Use Value: 0.5–12 mA ICC range extends battery life >3× in low-bandwidth modes while retaining 2700 V/µs slew for transient capture. |
| Remote-Site Communications Gear | Phased Array Radar Receiver Channel |
|
Use Scenario: Signal conditioning in solar-powered cellular base station remote radio heads operating in −40°C to +85°C ambient. IC Role / Device Role / Timing Role: IF amplifier and driver for up/down-conversion stages, leveraging temperature-stable bandwidth (±10% over −40°C to +85°C). Use Value: 52 dB +PSRR and 51 dB −PSRR suppress supply noise from switching regulators; <1 µA shutdown current minimizes dark-current drain. |
Use Scenario: Low-noise variable-gain amplification in T/R module receive chains prior to beamforming ADCs. IC Role / Device Role / Timing Role: Wideband gain block with fast enable synchronized to pulse-Doppler transmit/receive timing windows. Use Value: 20 ns turn-on aligns with sub-100 ns dead-time requirements; 2.5 nV/√Hz input noise maintains system NF below 4 dB at L/S-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 |
|---|---|---|---|
| LMH6722MF/NOPB | Fixed 12.5 mA supply current; no RP tuning; 1.7 GHz BW at AV = +2 but higher quiescent power | Best for fixed-high-performance designs where power budget allows continuous 12.5 mA draw | Select LMH6722MF/NOPB when maximum bandwidth is mandatory and supply current cannot be reduced. |
| THS3201DGN | Current-feedback op amp with 1.8 GHz BW and 4700 V/µs SR, but no enable/disable function and 12.5 mA fixed ICC | Suitable for ultra-wideband DC-coupled applications (e.g., optical receiver TIAs) requiring >1 GHz flat response | Choose THS3201DGN only if 1.8 GHz bandwidth is essential and system-level power management handles always-on operation. |
Compared with LMH6732MFX/NOPB, LMH6722MF/NOPB trades tunable power for higher fixed bandwidth, while THS3201DGN sacrifices enable functionality and ICC adjustability for extreme slew rate and bandwidth-neither offers the same combination of popless enable, sub-1 µA shutdown, and 10:1 ICC scalability.
Availability
LMH6732MFX/NOPB is available at Aetrix Electronics and suitable for video switching matrices, battery-powered test instrumentation, and remote-site communications gear requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for LMH6732MFX/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 ICs, embedded processors, and connectivity solutions for industrial, automotive, and communications markets.
The LMH6732 product line targets high-speed signal routing and conditioning in power-sensitive, wideband systems-designed specifically for applications demanding dynamic performance adjustment without sacrificing precision or reliability.
FAQ
What is the minimum supply current achievable for LMH6732MFX/NOPB while maintaining functional operation?
The LMH6732MFX/NOPB operates down to 0.5 mA supply current per datasheet Operating Ratings. At ICC = 1.0 mA, it delivers 55 MHz −3dB bandwidth and 400 V/µs slew rate-sufficient for medium-speed video and instrumentation tasks. Below 0.5 mA, the device may not meet specified AC performance or enable timing.
Does LMH6732MFX/NOPB require external compensation for unity-gain stability?
No, LMH6732MFX/NOPB is unity-gain stable and does not require external compensation components. Its current-feedback architecture and internal compensation ensure stability for all closed-loop gains ≥ +1, including AV = +1 follower configurations, simplifying PCB layout and reducing bill-of-materials cost.
How is the RP pin used to set supply current in LMH6732MFX/NOPB?
The RP pin sinks current proportional to supply current: IP ≈ ICC. A resistor RP connected between V+ and RP sets ICC ≈ (V+ − 1.2 V)/RP. For example, RP = 39 kΩ yields ICC ≈ 9 mA at VS = ±5 V. Open-circuiting RP places LMH6732MFX/NOPB in shutdown with <1 µA ICC.
Can LMH6732MFX/NOPB drive a 50 Ω load effectively?
Yes, LMH6732MFX/NOPB delivers ±115 mA output current at ICC = 9 mA, enabling direct driving of 50 Ω loads with ≤2.9 V swing (RL = 100 Ω) or ±1.45 V into 50 Ω. For full-scale 2 VPP into 50 Ω, use series matching or buffer configuration to maintain signal integrity and avoid excessive output stage heating.
What is the maximum differential phase error LMH6732MFX/NOPB exhibits in PAL video applications?
At ICC = 9 mA, RL = 150 Ω, and 4.43 MHz, LMH6732MFX/NOPB achieves 0.010° differential phase (DP), well below the 0.2° PAL specification limit. This low DP-combined with 0.025% differential gain-ensures accurate color reproduction without hue or saturation shift in broadcast-quality video routing equipment.
LMH6732MFX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Current Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 2700V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 540 MHz
- Current - Input Bias:
- 2 µA
- Voltage - Input Offset:
- 3 mV
- Current - Supply:
- 9mA
- Current - Output / Channel:
- 115 mA
- Voltage - Supply Span (Min):
- 9 V
- Voltage - Supply Span (Max):
- 12 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
LMH6732MFX/NOPB FAQ
1.How can I place an order for LMH6732MFX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH6732MFX/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 LMH6732MFX/NOPB reliable?
The price and inventory of LMH6732MFX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH6732MFX/NOPB is usually 5 days.
3.What payment methods are accepted for LMH6732MFX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH6732MFX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH6732MFX/NOPB?
LMH6732MFX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH6732MFX/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 LMH6732MFX/NOPB?
For technical support, including LMH6732MFX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH6732MFX/NOPB requirements.
6.How does Aetrix verify that LMH6732MFX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMH6732MFX/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 LMH6732MFX/NOPB meets industry standards.
7.What is the process for return or replacement of LMH6732MFX/NOPB?
All LMH6732MFX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMH6732MFX/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 LMH6732MFX/NOPB part is unused and in its original packaging.
Return procedure for LMH6732MFX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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