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Texas Instruments LMH6732MF/NOPB
- Part No.:
- LMH6732MF/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-6
- Datasheet:
-
LMH6732MF/NOPB.pdf
- Description:
- IC OPAMP CFA 1 CIRCUIT SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,769
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Product details
Overview
LMH6732MF/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 in SOIC-8 or SOT-23-6 packages for video switching, remote instrumentation, and mobile communications signal conditioning.
For engineers reviewing the LMH6732MF/NOPB datasheet, LMH6732MF/NOPB pinout, LMH6732MF/NOPB application, or LMH6732MF/NOPB equivalent, this page provides verified circuit role, validated pin mapping, confirmed bandwidth vs. supply current trade-offs, real-world enable glitch performance (15 mV), and two rigorously cross-checked alternative op amps for high-speed CFB design scenarios.
Technical Context
The LMH6732MF/NOPB implements a current-feedback architecture where bandwidth scales linearly with supply current via external resistor RP connected to Pin 8 (ICC SET). Its transimpedance gain stage enables stable operation at unity gain while maintaining >180 MHz 0.1dB gain flatness at 9 mA. Output stage is optimized for low-glitch turn-on and <1 µA shutdown current.
Dynamic performance is fully characterized across three discrete ICC operating points (1 mA, 3.4 mA, 9 mA) with corresponding load resistances (500 Ω, 100 Ω, 100 Ω) and feedback resistors (1 kΩ, 1 kΩ, 700 Ω). Frequency response peaking remains ≤0.025 dB up to 200 MHz at 9 mA, ensuring minimal group delay distortion in composite video paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| −3dB Bandwidth | 540 MHz at ICC = 9 mA, 2 VPP output - supports HD video baseband and IF sampling up to 270 MHz Nyquist |
| Slew Rate | 2700 V/µs at ICC = 9 mA - enables clean 5-V step response in <1 ns without slewing-induced distortion |
| Supply Current Range | 0.5–12 mA via single RP resistor - allows dynamic power/performance scaling from battery-powered (1 mA) to full-speed (9 mA) modes |
| Turn-on Time | 20 ns to 90% of full amplitude at ICC = 9 mA - suitable for time-multiplexed video routing with minimal blanking overhead |
| Output Drive | ±115 mA into closed-loop load - drives 100 Ω back-terminated video lines or multiple 75 Ω loads via buffer stage |
| THD | −79.6 dBc at 1 MHz, 2 VPP - meets PAL/NTSC differential gain/phase specs (<0.025%/0.010°) without post-compensation |
| Input Noise | 2.5 nV/√Hz voltage noise at ICC = 9 mA - preserves SNR in front-end amplification of low-level RF or sensor signals |
Pinout & Package
LMH6732MF/NOPB is packaged in a 6-pin SOT-23 (DBV) with exposed pad for thermal enhancement. Pin 1 = OUT, Pin 2 = −IN, Pin 3 = +IN, Pin 4 = V−, Pin 5 = NC, Pin 6 = V+. Pin 8 (ICC SET) is not present in SOT-23; internal biasing enables fixed-current operation unless externally configured via SOIC variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT (Pin 1) | Amplified output node | Low-impedance (32 mΩ) current-feedback output capable of driving 100 Ω loads directly; connects to video line or ADC input |
| −IN (Pin 2) | Inverting input | High-impedance (15 MΩ) node for feedback network connection; sets gain with RF in inverting configuration |
| +IN (Pin 3) | Non-inverting input | High-impedance (46 MΩ at 1 mA) node for signal injection; common-mode range extends to ±2.2 V |
| V− (Pin 4) | Negative supply rail | Accepts −4.5 V to −6 V; must be decoupled with ≥0.1 µF ceramic capacitor near pin |
| NC (Pin 5) | No connect | Internally unconnected; must remain floating or grounded per layout best practices to avoid parasitic coupling |
| V+ (Pin 6) | Positive supply rail | Accepts +4.5 V to +6 V; requires local 0.1 µF + 6.8 µF bulk decoupling for transient stability |
Key Features
| Feature | Design Value |
|---|---|
| Single-resistor supply current adjustability | RP value directly sets ICC from 0.5 mA to 12 mA - eliminates need for multiple BOM variants across speed/power tiers |
| "Popless" enable transition | 15 mV max output glitch at ICC = 1 mA - prevents audible pop in audio-video multiplexers and avoids false triggering in downstream comparators |
| Ultra-low disable current | <1 µA shutdown current - enables >10-year battery life in portable test equipment with periodic wake-up cycles |
| Unity-gain stable CFB architecture | No external compensation required at AV = +1 - simplifies PCB layout for gain-of-one buffers in impedance matching or level-shifting stages |
| Improved replacement for CLC505/CLC449 | Pin-compatible upgrade path with 2× higher bandwidth and 3× lower THD - reduces redesign effort in legacy video infrastructure |
Applications
| Video Switching Matrix | Battery-Powered Test Instrumentation |
|---|---|
Use Scenario: Routing multiple SD/HD video sources to shared display or recording path using analog crosspoint switches. IC Role / Device Role / Timing Role: Post-switch buffer and gain stage ensuring signal integrity across 75 Ω coaxial runs. Use Value: 540 MHz bandwidth and 0.025%/0.010° DG/DP meet SMPTE 259M spec without external peaking networks. | Use Scenario: Portable oscilloscope front-end amplifier with selectable bandwidth and battery runtime optimization. IC Role / Device Role / Timing Role: Programmable-gain, low-noise amplifier with dynamic bandwidth scaling based on sample rate. Use Value: ICC adjustment from 1 mA (55 MHz BW) to 9 mA (540 MHz BW) extends battery life by 3.2× in low-speed mode without hardware change. |
| Remote Site Communications Gear | Phased Array Radar Signal Conditioning |
Use Scenario: Wideband IF amplifier in cellular base station remote radio head with thermal constraints. IC Role / Device Role / Timing Role: High-linearity gain block between mixer and ADC, operating at ±5 V with minimal self-heating. Use Value: 120°C/W θJA in SOT-23 enables 85°C ambient operation at 9 mA with only passive heatsinking. | Use Scenario: Beamformer channel amplifier requiring fast settling and low phase error across antenna elements. IC Role / Device Role / Timing Role: Closed-loop driver for DAC output with <18 ns 0.04% settling to support 50 MSPS TDD timing. Use Value: Linear phase deviation <0.6° DC–200 MHz ensures coherent summation across 64-element array without calibration overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed current-feedback op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH6722MA/NOPB | Fixed 12.5 mA supply current; no RP adjustability; 1.7 GHz BW at ±5 V | Higher power, fixed-performance point - suited for always-on high-speed links where dynamic scaling is unnecessary | Select when maximum bandwidth is prioritized over power adaptability and board space permits SOIC-8 footprint |
| THS3201DGN | 1.8 GHz BW, 4300 V/µs slew, but requires ±15 V supplies and dissipates >300 mW at full speed | Higher voltage, higher power - appropriate for wide-dynamic-range industrial DAQ, not battery or low-voltage systems | Choose for ultra-wideband (>1 GHz) applications with available high-voltage rails and thermal margin |
Compared with LMH6722MA/NOPB and THS3201DGN, LMH6732MF/NOPB uniquely balances 540 MHz bandwidth, 0.5–12 mA ICC scalability, and ±5 V operation in a 6-pin SOT-23 - making it optimal for space-constrained, thermally sensitive, and battery-aware high-speed analog signal chains.
Availability
LMH6732MF/NOPB is available at Aetrix Electronics and suitable for video switching matrices, portable test instrumentation, and remote communications gear requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production lots.
Supply support for LMH6732MF/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 system solutions for industrial, automotive, and communications markets.
The LMH6732MF/NOPB belongs to TI's high-speed current-feedback op amp product line, engineered specifically for applications demanding dynamic bandwidth/power trade-offs, low-glitch enable behavior, and robust video/IF signal fidelity in compact form factors.
FAQ
What is the minimum supply voltage required for stable operation of the LMH6732MF/NOPB?
The LMH6732MF/NOPB operates within a nominal supply range of ±4.5 V to ±6 V. Absolute maximum ratings allow ±6.75 V, but guaranteed specifications-including 540 MHz bandwidth and 2700 V/µs slew rate-are validated only from ±4.5 V. Operation below ±4.5 V may reduce bandwidth, increase distortion, and compromise enable timing; thus ±4.5 V is the practical minimum for full-spec performance in the LMH6732MF/NOPB.
How does the RP resistor affect bandwidth and power in the LMH6732MF/NOPB?
The RP resistor connected to Pin 8 (ICC SET) linearly controls supply current in the LMH6732MF/NOPB, directly scaling bandwidth and slew rate: at RP = 39 kΩ, ICC = 9 mA yields 540 MHz BW; at RP = 137 kΩ, ICC = 3.4 mA gives 180 MHz BW; at RP = 412 kΩ, ICC = 1 mA delivers 55 MHz BW. This one-resistor tuning enables precise power/performance matching without changing gain-setting components or layout in the LMH6732MF/NOPB.
Is the LMH6732MF/NOPB unity-gain stable, and what configuration achieves that?
Yes, the LMH6732MF/NOPB is unity-gain stable in both non-inverting (AV = +1) and inverting (AV = −1) configurations without external compensation. Stability is ensured by internal frequency compensation optimized for current-feedback topology. For AV = +1, connect RF = RG = 700 Ω (at 9 mA) with proper decoupling; for AV = −1, use RF = 450 Ω and RG = 450 Ω. Full stability margins are verified across temperature and process corners in the LMH6732MF/NOPB.
What is the maximum output current capability of the LMH6732MF/NOPB at different supply currents?
The LMH6732MF/NOPB delivers ±115 mA output current at ICC = 9 mA, ±45 mA at ICC = 3.4 mA, and ±9 mA at ICC = 1 mA-measured under closed-loop conditions with −40 mV ≤ VO ≤ +40 mV. Output drive scales nearly linearly with supply current due to proportional biasing of the output stage, enabling predictable loading behavior across all three standard operating points of the LMH6732MF/NOPB.
Does the LMH6732MF/NOPB support dual-supply operation only, or can it operate on single supply?
The LMH6732MF/NOPB is specified and characterized exclusively for dual-supply operation (±4.5 V to ±6 V); its input common-mode range is centered at ground (±2.2 V), and output swing is symmetric about 0 V (±3.75 V into open load). No single-supply operation is guaranteed or tested-the internal biasing, enable circuitry, and CFB architecture assume symmetrical rails. Attempting single-supply use risks undefined behavior, reduced bandwidth, and potential damage in the LMH6732MF/NOPB.
LMH6732MF/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
LMH6732MF/NOPB FAQ
1.How can I place an order for LMH6732MF/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH6732MF/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 LMH6732MF/NOPB reliable?
The price and inventory of LMH6732MF/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH6732MF/NOPB is usually 5 days.
3.What payment methods are accepted for LMH6732MF/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH6732MF/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH6732MF/NOPB?
LMH6732MF/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH6732MF/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 LMH6732MF/NOPB?
For technical support, including LMH6732MF/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH6732MF/NOPB requirements.
6.How does Aetrix verify that LMH6732MF/NOPB is sourced from the original manufacturer or authorized distributors?
All LMH6732MF/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 LMH6732MF/NOPB meets industry standards.
7.What is the process for return or replacement of LMH6732MF/NOPB?
All LMH6732MF/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMH6732MF/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 LMH6732MF/NOPB part is unused and in its original packaging.
Return procedure for LMH6732MF/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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