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Texas Instruments LMH6724MA/NOPB
- Part No.:
- LMH6724MA/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMH6724MA/NOPB.pdf
- Description:
- IC OPAMP CFA 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,130
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Product details
Overview
LMH6724MA/NOPB from Texas Instruments is a dual-channel current-feedback operational amplifier optimized for high-speed video and analog signal conditioning. It delivers 370 MHz unity-gain bandwidth (−3 dB), 260 MHz small-signal bandwidth at AV = +2 V/V, 600 V/μs slew rate, and 110 mA linear output current while consuming only 1.2 mA per channel from ±5 V supplies. It serves as a line driver or A/D converter front-end in portable video systems requiring NTSC/PAL-compliant differential gain (0.03%) and phase (0.11°) performance.
For engineers reviewing the LMH6724MA/NOPB datasheet, LMH6724MA/NOPB pinout, LMH6724MA/NOPB application, or LMH6724MA/NOPB equivalent, key selection criteria include its current-feedback architecture, SOIC-8 package compatibility, ±4.5 V to ±6 V supply range, 0.1 dB gain flatness to 100 MHz, and guaranteed 2.5 ns rise/fall time - all critical for high-fidelity analog signal routing in space-constrained designs.
Technical Context
The LMH6724MA/NOPB implements a current-feedback topology with separate high-impedance non-inverting input (100 kΩ) and low-impedance inverting input (~500 Ω), enabling gain-independent bandwidth control via external feedback resistor selection (e.g., 1.2 kΩ for AV = +2). Its VIP10 complementary bipolar process ensures stable operation across ±4.5 V to ±6 V supplies without internal ground reference, supporting both single- and split-supply configurations.
It features unity-gain stability, 0.01 Ω closed-loop output resistance, and rail-to-rail output voltage swing (±3.85 V into open load at ±5 V), with differential gain/phase tested per NTSC/PAL standards at 4.43 MHz into 150 Ω. Channel matching and crosstalk are characterized for dual-channel correlation in synchronous signal paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Unity-Gain Bandwidth | 370 MHz (−3 dB, AV = 1, VOUT = 0.2 VPP): enables wideband buffer or cable driver applications up to UHF frequencies. |
| Small-Signal Bandwidth | 260 MHz (−3 dB, AV = +2, VOUT = 0.5 VPP): supports high-resolution video reconstruction and fast-settling ADC driving. |
| Slew Rate | 600 V/μs (4 V step): ensures minimal distortion on fast transient signals such as composite sync pulses or digital eye patterns. |
| Output Current | 110 mA linear sourcing (RL = ∞): drives 75 Ω video loads or parallel termination networks without clipping. |
| Differential Gain/Phase | 0.03% / 0.11° (NTSC, RL = 150 Ω, 4.43 MHz): meets broadcast-grade video fidelity requirements for portable DVD and line drivers. |
| Supply Current | 1.2 mA per channel (±5 V, RL = ∞): enables dual-channel high-speed amplification in battery-powered devices with thermal headroom. |
| Rise/Fall Time | 2.5 ns (4 V step): supports >300 Mbps analog signal integrity in point-to-point interconnects. |
Pinout & Package
LMH6724MA/NOPB uses an 8-pin SOIC (D08A) package measuring 4.90 mm × 3.91 mm with standard JEDEC outline and 1.27 mm pitch. Thermal resistance is 166°C/W (junction-to-ambient).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Channel A output node; requires local 0.1 μF bypass capacitor and optional series ROUT for capacitive load stabilization. |
| 2 | IN− A | Channel A inverting input; low impedance (~500 Ω) sets feedback network behavior and must avoid parasitic capacitance. |
| 3 | IN+ A | Channel A non-inverting input; high impedance (100 kΩ) accepts high-Z sources but requires matched layout to IN− A. |
| 4 | V− | Negative supply rail; shared return path for both channels; decoupling required within 5 mm of pin. |
| 5 | V+ | Positive supply rail; independent of V−; supports 4.5–12 V total supply range (±2.25 V to ±6 V). |
| 6 | IN− B | Channel B inverting input; electrically identical to IN− A; crosstalk < −70 dBc at 10 MHz per characterization. |
| 7 | OUT B | Channel B output node; fully independent of OUT A; supports simultaneous dual-channel signal processing. |
| 8 | IN+ B | Channel B non-inverting input; matched to IN+ A for channel tracking; used in differential receiver or dual-path filtering. |
Key Features
| Feature | Design Value |
|---|---|
| Current-feedback architecture | Enables constant bandwidth across gains +1 to +5 V/V via RF tuning (e.g., 1.2 kΩ for AV = +2), unlike voltage-feedback op-amps. |
| 0.1 dB gain flatness to 100 MHz | Preserves amplitude integrity across baseband video spectrum (DC–10 MHz) and high-frequency edge detail (up to 100 MHz). |
| NTSC/PAL-qualified video performance | 0.03% differential gain and 0.11° differential phase ensure color fidelity and timing accuracy in broadcast-compatible signal chains. |
| Single-supply capable operation | Operates from 4.5 V to 12 V total supply (e.g., 5 V or 10 V), eliminating need for negative rails in portable video encoders. |
| Low 1.2 mA/channel quiescent current | Reduces thermal load and extends battery life in handheld scopes, portable media players, and field test equipment. |
Applications
| Portable Video | Line Driver |
|---|---|
|
Use Scenario: Driving composite video signals from portable DVD players to external displays over 75 Ω coaxial cables. IC Role / Device Role / Timing Role: Dual-channel current-feedback amplifier configured as unity-gain buffer with matched output stages. Use Value: Maintains 0.03% differential gain and 0.11° phase error at 4.43 MHz, preserving color burst integrity and minimizing hue/saturation shift. |
Use Scenario: Amplifying and distributing high-speed analog sensor outputs (e.g., CCD imaging data) across PCB traces to multiple destinations. IC Role / Device Role / Timing Role: High-output-current line driver with 110 mA sourcing capability and 2.5 ns rise time. Use Value: Drives 75 Ω loads without overshoot or settling delay, ensuring clean eye diagrams and <30 ns 0.05% settling for multi-drop bus topologies. |
| A/D Converter Driver | Portable Test Equipment |
|
Use Scenario: Conditioning analog inputs before 10-bit+ ADCs in handheld oscilloscopes or spectrum analyzers. IC Role / Device Role / Timing Role: Wideband gain stage with 370 MHz unity-gain bandwidth and low 4.3 nV/√Hz input voltage noise. Use Value: Preserves SNR across DC–100 MHz input spectrum while delivering full-scale swing into 100 Ω ADC input impedances. |
Use Scenario: Signal conditioning in battery-powered field test gear requiring low power, high speed, and thermal stability. IC Role / Device Role / Timing Role: Dual-channel active filter or gain block operating from 5 V single supply with rail-to-rail output swing. Use Value: Delivers 260 MHz bandwidth and 600 V/μs slew rate at only 2.4 mA total supply current, extending runtime without fan cooling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel current-feedback amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH6722MA/NOPB | Single-channel version; identical bandwidth (370 MHz), slew rate (600 V/μs), and supply current (1.2 mA), but lacks second channel. | Used where only one high-speed path is needed; saves board area but requires duplication for dual-path designs. | Select when system-level channel count allows consolidation or cost-sensitive single-channel use cases. |
| THS3202D | Higher supply current (5.5 mA/ch), wider supply range (±5 V to ±15 V), and higher output current (190 mA), but larger SOIC-8 footprint and no NTSC/PAL characterization. | Preferred for industrial line drivers needing >100 mA into heavy loads or extended temperature operation beyond +85°C. | Choose when absolute output drive strength or extended voltage range outweighs power efficiency and video compliance. |
Compared with LMH6724MA/NOPB, LMH6722MA/NOPB reduces channel count and board area but doubles component count for dual-path needs, while THS3202D trades 4.6× higher quiescent current for greater output drive and voltage flexibility - making LMH6724MA/NOPB optimal for portable, power-constrained, broadcast-compliant dual-channel systems.
Availability
LMH6724MA/NOPB is available at Aetrix Electronics and suitable for portable video, line driver, and A/D converter driver applications requiring stable component supply, long-term lifecycle support, and traceable sourcing for medical, industrial, and consumer electronics programs.
Supply support for LMH6724MA/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 LMH6724MA/NOPB belongs to TI's LMH67xx current-feedback op-amp family, designed specifically for portable, low-power, high-fidelity video and instrumentation applications demanding bandwidth, linearity, and NTSC/PAL compliance.
FAQ
What is the recommended feedback resistor value for LMH6724MA/NOPB at AV = +2?
The LMH6724MA/NOPB datasheet specifies 1.2 kΩ as the recommended feedback resistor (RF) for non-inverting gain of +2 V/V with ±5 V supplies. This value balances bandwidth, gain flatness, and stability - yielding 260 MHz −3 dB bandwidth and <0.1 dB peaking. Lower RF values (e.g., 800 Ω) increase bandwidth but risk overshoot; higher values reduce bandwidth and degrade stability margin. LMH6724MA/NOPB requires explicit RF selection - it cannot operate with direct inverting-input shorting.
Does LMH6724MA/NOPB support single-supply operation?
Yes, LMH6724MA/NOPB operates from a total supply range of 4.5 V to 12 V, enabling true single-supply use (e.g., +5 V and GND). Its input common-mode range extends to within 1.45 V of either rail, and output swings to ±3.85 V (±5 V supplies) or ±1.45 V (±2.5 V supplies). No internal ground reference is required, so level-shifting circuitry is unnecessary for DC-coupled single-supply signal chains. LMH6724MA/NOPB maintains specified AC performance across this full supply range.
What is the maximum capacitive load LMH6724MA/NOPB can drive stably?
LMH6724MA/NOPB can drive up to 100 pF capacitive load stably when paired with a series output resistor (ROUT) of 48 Ω (per Figure 17/18 in the datasheet, ±5 V, 1 kΩ || CL configuration). For smaller loads (e.g., 10 pF), ROUT may be reduced to 24 Ω. Without ROUT, instability occurs above ~5 pF. The recommended ROUT values ensure ≤0.5 dB peaking in frequency response - preserving bandwidth while guaranteeing monotonic settling. LMH6724MA/NOPB's low 0.01 Ω closed-loop output resistance makes external ROUT essential for capacitive load isolation.
How does LMH6724MA/NOPB differ from voltage-feedback op-amps in layout practice?
LMH6724MA/NOPB requires strict symmetry between inverting and non-inverting input traces due to its low-impedance inverting input (~500 Ω) and high-impedance non-inverting input (100 kΩ). Parasitic capacitance on the inverting input degrades stability more severely than on the non-inverting input. Feedback resistor placement must minimize loop area, and ground vias should be placed adjacent to V+ and V− pins. Unlike voltage-feedback op-amps, LMH6724MA/NOPB does not tolerate input guard rings or excessive trace length on the inverting node - layout deviations directly impact bandwidth and phase margin.
Is LMH6724MA/NOPB pin-compatible with other dual-channel CFB op-amps like THS3202D?
No, LMH6724MA/NOPB is not pin-compatible with THS3202D. While both are dual-channel current-feedback op-amps in SOIC-8 packages, their pinouts differ: LMH6724MA/NOPB assigns OUT A to Pin 1, IN− A to Pin 2, IN+ A to Pin 3, V− to Pin 4, V+ to Pin 5, IN− B to Pin 6, OUT B to Pin 7, and IN+ B to Pin 8. THS3202D uses OUT A / IN− A / IN+ A / V− / V+ / IN+ B / IN− B / OUT B - swapping Pins 6–8. Direct replacement would require PCB redesign. LMH6724MA/NOPB has no drop-in alternatives in SOIC-8 with identical pin mapping.
LMH6724MA/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMH®
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Current Feedback
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 600V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 370 MHz
- Current - Input Bias:
- 2 µA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 1mA (x2 Channels)
- Current - Output / Channel:
- 110 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
LMH6724MA/NOPB FAQ
1.How can I place an order for LMH6724MA/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH6724MA/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 LMH6724MA/NOPB reliable?
The price and inventory of LMH6724MA/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH6724MA/NOPB is usually 5 days.
3.What payment methods are accepted for LMH6724MA/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH6724MA/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH6724MA/NOPB?
LMH6724MA/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH6724MA/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 LMH6724MA/NOPB?
For technical support, including LMH6724MA/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH6724MA/NOPB requirements.
6.How does Aetrix verify that LMH6724MA/NOPB is sourced from the original manufacturer or authorized distributors?
All LMH6724MA/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 LMH6724MA/NOPB meets industry standards.
7.What is the process for return or replacement of LMH6724MA/NOPB?
All LMH6724MA/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMH6724MA/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 LMH6724MA/NOPB part is unused and in its original packaging.
Return procedure for LMH6724MA/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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