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Texas Instruments LMH6732MA/NOPB
- Part No.:
- LMH6732MA/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMH6732MA/NOPB.pdf
- Description:
- IC OPAMP CFA 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:957
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Product details
Overview
LMH6732MA/NOPB from Texas Instruments is a current-feedback operational amplifier with adjustable supply current (0.5–12 mA), −3dB bandwidth up to 540 MHz at 9 mA, slew rate of 2700 V/µs, and fast enable/disable (20 ns turn-on). It operates on ±4.5 V to ±6 V supplies and delivers ±115 mA output drive, making it suitable for high-speed video switching matrices and remote instrumentation signal conditioning.
For engineers reviewing the LMH6732MA/NOPB datasheet, LMH6732MA/NOPB pinout, LMH6732MA/NOPB application, or LMH6732MA/NOPB equivalent, key selection criteria include bandwidth vs. supply current trade-off, shutdown current <1 µA, "popless" enable (15 mV glitch), differential gain/phase performance (0.025%/0.010° at 4.43 MHz), and SOIC-8 package compatibility with evaluation board support.
Technical Context
The LMH6732MA/NOPB uses a current-feedback architecture with external resistor RP (pin 8) controlling supply current and thus bandwidth, slew rate, and output drive. Its design eliminates spurious transients during enable by suppressing output glitches to ≤15 mV.
It supports both inverting and non-inverting configurations (AV = −1 to +21), maintains stability across gain settings including unity gain, and features low input capacitance (1.7–1.8 pF) and high input resistance (up to 46 MΩ at 1 mA), enabling wideband operation into capacitive loads when paired with appropriate series resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| −3dB Bandwidth | 540 MHz at ICC = 9 mA, 2 VPP output - enables 500+ MHz analog signal paths in video and comms gear |
| Slew Rate | 2700 V/µs at ICC = 9 mA - supports clean large-signal step response with <1% overshoot |
| Supply Current Range | 0.5–12 mA via single RP resistor - allows dynamic power/performance scaling without circuit redesign |
| Enable Time | 20 ns to 90% full output at ICC = 9 mA - meets timing-critical multiplexing and power-gating requirements |
| Differential Gain/Phase | 0.025%/0.010° at 4.43 MHz, RL = 150 Ω - meets PAL/NTSC video fidelity standards |
| Shutdown Current | <1 µA - enables ultra-low-power standby in battery-operated remote test equipment |
| Output Drive | ±115 mA at ICC = 9 mA, RL = 100 Ω - drives multiple 150 Ω video loads or 50 Ω transmission lines directly |
Pinout & Package
LMH6732MA/NOPB is housed in an 8-pin SOIC package (Package Number D, R-PDSO-G8) with exposed pad not present. Pin 8 is the ICC control terminal (RP connection); pins 1 and 5 are no-connect (N/C).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | No Connect (N/C) | Not internally bonded; must be left floating or tied to ground per layout best practice |
| 2 | Inverting Input (−IN) | Current-input node for CFB topology; low impedance (~50 Ω) requires matched source termination |
| 3 | Non-Inverting Input (+IN) | High-impedance voltage input (4.7–46 MΩ); used for reference or feedback path in non-inverting config |
| 4 | Negative Supply (V−) | Connects to −VS rail (±4.5 V to ±6 V); internal ESD protection limits absolute max to −6.75 V |
| 5 | No Connect (N/C) | Not internally bonded; must be left floating or tied to ground |
| 6 | Output (OUT) | Low-output-impedance driver (32 mΩ typical at 9 mA); capable of ±115 mA into 100 Ω |
| 7 | Positive Supply (V+) | Connects to +VS rail; thermal resistance θJA = 166°C/W in SOIC-8 |
| 8 | ICC Control (RP) | External resistor RP sets supply current; 39 kΩ → 9 mA, 137 kΩ → 3.4 mA, 412 kΩ → 1.0 mA |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable bandwidth via single resistor | RP on pin 8 scales −3dB BW from 55 MHz (1 mA) to 540 MHz (9 mA) - eliminates need for multiple op-amp SKUs |
| Popless enable | Turn-on output glitch ≤15 mV at ICC = 1 mA - prevents visible artifacts in video switching applications |
| Ultra-low shutdown current | <1 µA ICC during disable - extends battery life in portable instrumentation by >100× vs. active state |
| Unity-gain stable CFB architecture | Operates stably at AV = +1 without external compensation - simplifies PCB layout for gain-setting networks |
| Wide supply range | ±4.5 V to ±6 V operation - supports legacy ±5 V systems and newer ±4.75 V rails without level-shifting |
Applications
| Video Switching Matrix | Battery-Powered Test Instrumentation |
|---|---|
Use Scenario: Routing multiple HD video sources (e.g., HDMI analog bypass, SDI reclocking) through a central switch fabric with minimal crosstalk and distortion. IC Role / Device Role / Timing Role: High-speed buffer and gain stage in each channel, configured as unity-gain follower or AV = +2 driver with 540 MHz bandwidth. Use Value: Differential gain/phase of 0.025%/0.010° preserves color fidelity; 20 ns enable time allows sub-frame switching without visible tearing. | Use Scenario: Portable oscilloscope front-end or handheld spectrum analyzer requiring low power, high linearity, and fast settling for real-time signal capture. IC Role / Device Role / Timing Role: Signal conditioning amplifier before ADC, operating at 3.4 mA to balance 180 MHz bandwidth and 8-hour battery life. Use Value: 18 ns settling to 0.04% ensures accurate digitization of fast transients; shutdown current <1 µA enables deep sleep between measurements. |
| Remote Site Communications Gear | Phased Array Radar Signal Path |
Use Scenario: RF/IF signal distribution in cellular base station remote radio heads or satellite ground terminals where thermal management is constrained. IC Role / Device Role / Timing Role: Wideband IF amplifier in transmit/receive chains, biased at 9 mA for maximum output drive into 50 Ω loads. Use Value: ±115 mA output current drives long coaxial runs without external buffers; 2700 V/µs slew rate supports multi-MHz modulation envelopes. | Use Scenario: Beamforming channel amplifier in active electronically scanned array (AESA) radar, requiring precise amplitude/phase matching across 100+ channels. IC Role / Device Role / Timing Role: Gain block in T/R module signal path, configured for AV = +6 with 100 MHz flatness (0.1 dB) at 3.4 mA. Use Value: 0.15 dB gain peaking and 0.05 dB rolloff over 75 MHz ensure consistent beam shape; low THD (−78.5 dBc) minimizes spurious emissions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed current-feedback amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH6722MA/NOPB | Fixed 12.5 mA supply current; no RP control; 1.7 GHz BW but higher power | Lacks adjustable power mode - unsuitable for battery or thermally constrained designs | Select when maximum bandwidth is required and power budget permits constant 12.5 mA draw |
| THS3201DGN | Fixed 12 mA supply; 1.8 GHz BW; no enable/disable function; higher input bias current (±15 µA) | No shutdown capability - cannot meet <1 µA standby requirement | Select for highest possible small-signal bandwidth where enable control and ultra-low shutdown current are not needed |
Compared with LMH6722MA/NOPB and THS3201DGN, the LMH6732MA/NOPB uniquely provides continuous supply current adjustment (0.5–12 mA), sub-20 ns enable, and <1 µA shutdown - essential for adaptive power management in portable and remote electronics.
Availability
LMH6732MA/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 traceable sourcing.
Supply support for LMH6732MA/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 decades of expertise in high-speed amplifiers and precision signal chain solutions.
The LMH6732MA/NOPB belongs to TI's high-speed current-feedback op-amp product line, designed specifically for applications demanding dynamic power scaling, fast enable/disable, and video-grade linearity in space- and power-constrained systems.
FAQ
What is the recommended external resistor (RP) value to achieve 9 mA supply current for LMH6732MA/NOPB?
The LMH6732MA/NOPB achieves 9 mA supply current with RP = 39 kΩ connected between pin 8 (RP) and V−. This value is confirmed in the Electrical Characteristics table for ICC = 9 mA conditions (VS = ±5 V, AV = +2, RL = 100 Ω). Deviations beyond ±1% tolerance may shift bandwidth and slew rate outside guaranteed specs.
Does LMH6732MA/NOPB require external compensation for unity-gain stability?
No, the LMH6732MA/NOPB is unity-gain stable in both inverting and non-inverting configurations without external compensation. Its current-feedback architecture and internal compensation ensure stability at AV = +1, as verified in Figure 59 (non-inverting) and Figure 60 (inverting) of the datasheet with standard 700 Ω/1 kΩ feedback networks.
What is the maximum output voltage swing for LMH6732MA/NOPB at ±5 V supplies?
At ±5 V supplies and RL = ∞, the LMH6732MA/NOPB delivers ±3.75 V output voltage swing (typical). With RL = 100 Ω, the swing reduces to ±3.10 V (typical), as specified in the Electrical Characteristics table under VO and VOL parameters. Output clipping begins near ±3.8 V due to internal headroom limitations.
Can LMH6732MA/NOPB drive a 50 Ω load directly, and what is the resulting bandwidth?
Yes, the LMH6732MA/NOPB can drive a 50 Ω load directly, delivering ±75 mA (min) output current. At ICC = 9 mA and RL = 50 Ω, the −3dB bandwidth remains ≥500 MHz (extrapolated from RL = 100 Ω data and Figure 49), though exact measurement requires verification with 50 Ω termination in the target layout due to PCB parasitics.
How does temperature affect the bandwidth of LMH6732MA/NOPB across its operating range?
Bandwidth decreases with rising temperature: at ICC = 9 mA, −3dB BW is 540 MHz (25°C), ~480 MHz (85°C), and ~580 MHz (−40°C), as shown in Figure 49. The variation is monotonic and predictable, allowing system-level derating - e.g., design for 480 MHz minimum at max ambient to ensure margin in industrial environments.
LMH6732MA/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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:
- 8-SOIC
LMH6732MA/NOPB FAQ
1.How can I place an order for LMH6732MA/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH6732MA/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 LMH6732MA/NOPB reliable?
The price and inventory of LMH6732MA/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH6732MA/NOPB is usually 5 days.
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We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH6732MA/NOPB transactions.
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4.How is shipping managed for LMH6732MA/NOPB?
LMH6732MA/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH6732MA/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 LMH6732MA/NOPB?
For technical support, including LMH6732MA/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH6732MA/NOPB requirements.
6.How does Aetrix verify that LMH6732MA/NOPB is sourced from the original manufacturer or authorized distributors?
All LMH6732MA/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 LMH6732MA/NOPB meets industry standards.
7.What is the process for return or replacement of LMH6732MA/NOPB?
All LMH6732MA/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMH6732MA/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 LMH6732MA/NOPB part is unused and in its original packaging.
Return procedure for LMH6732MA/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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