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Texas Instruments LMH6722MA
- Part No.:
- LMH6722MA
- Manufacturer:
- Texas Instruments
- Category:
- Video Amps and Modules
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMH6722MA.pdf
- Description:
- IC AMP CURRENT FEEDBACK 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,959
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Product details
Overview
LMH6722MA from Texas Instruments is a quad-channel, current-feedback video operational amplifier in 14-pin SOIC package, delivering 250MHz −3dB bandwidth (VOUT = 2VPP), 1800V/μs slew rate, and 0.01% differential gain / 0.01° differential phase error for NTSC/PAL video signals driving 150Ω loads. It serves as a high-fidelity analog front-end driver in broadcast-grade video distribution systems.
For engineers reviewing the LMH6722MA datasheet, LMH6722MA pinout, LMH6722MA application, or LMH6722MA equivalent, key selection criteria include its quad-channel current-feedback architecture, 250MHz large-signal bandwidth at ±5V supplies, low 5.6mA per channel supply current, and compatibility with back-terminated 75Ω/150Ω video loads without external compensation.
Technical Context
The LMH6722MA implements Texas Instruments' VIP10 high-speed complementary bipolar process with current-feedback topology, enabling gain-independent bandwidth optimization via external feedback resistor tuning (recommended RF = 300Ω for AV = +2). Its input buffer features ~180Ω output impedance, requiring careful RG selection to maintain stability at gains ≥±5V/V.
Unlike voltage-feedback op amps, the LMH6722MA's transimpedance gain stage decouples bandwidth from closed-loop gain-allowing flat 0.1dB gain response to 120MHz and minimal phase deviation (<0.5° DC–120MHz)-making it suitable for wideband active filters, cable drivers, and HDTV signal conditioning where transient fidelity and harmonic distortion (<−70dBc HD3 at 20MHz) are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| −3dB Bandwidth | 250MHz at VOUT = 2VPP, AV = +2 - supports full HD baseband video (up to 1080i/720p) without attenuation |
| Slew Rate | 1800V/μs - ensures <12ns settling to 0.05% for 2V step, critical for fast video transitions and sync pulses |
| Differential Gain/Phase | 0.01% / 0.01° at 4.43MHz, RL = 150Ω - meets broadcast NTSC/PAL color fidelity requirements |
| Harmonic Distortion | −58dBc HD2 / −70dBc HD3 at 20MHz - preserves signal integrity in multi-channel video switching |
| Supply Current | 22.5mA typical per channel (±5V) - enables quad-channel operation within 90mW/channel thermal budget |
| Input Voltage Range | ±2.2V common-mode - accommodates standard video DC-coupled signal levels with headroom |
| Output Current | 70mA continuous - drives multiple back-terminated 75Ω lines or single 150Ω load robustly |
Pinout & Package
LMH6722MA is housed in a 14-pin SOIC (Package D), with exposed pad not present. Thermal resistance θJA = 130°C/W. Pinout optimized for quad-channel symmetry and minimized crosstalk in video routing.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 9, 13 | Non-inverting Input (+IN) | High-impedance node (~2MΩ) for each of four independent amplifiers; requires low-capacitance layout |
| 2, 6, 10, 14 | Inverting Input (−IN) | Low-impedance current-summing node (~180Ω); dictates RF/RG selection for gain and stability |
| 3, 7, 11, 4 | Output (OUT) | Low-output-impedance (<0.06Ω closed-loop) drive capable of 70mA into 100Ω load |
| 8, 12 | V− (Negative Supply) | Common negative rail connection for all four channels; must be low-inductance path to ground plane |
| 14-Pin SOIC Pin 14 | V+ (Positive Supply) | Common positive rail for all channels; bypassing with 0.1μF ceramic + bulk capacitor required |
Key Features
| Feature | Design Value |
|---|---|
| Quad-channel current-feedback architecture | Enables independent, high-speed signal paths with minimal inter-channel crosstalk (<−60dB @ 100MHz) |
| 0.1dB gain flatness to 120MHz | Preserves chroma/luma amplitude balance across full SD/HD video spectrum without equalization |
| Unity-gain stable with RF = 600Ω buffer config | Supports direct voltage-follower use in impedance-matching applications without oscillation risk |
| Low 3.4nV/√Hz input voltage noise | Maintains >65dB SNR in 0–100MHz video band, critical for low-noise camera front-ends |
| 145°C/W thermal resistance (SOIC) | Allows sustained 70mA output current at TA ≤ 70°C ambient without derating or heatsinking |
Applications
| HDTV Signal Distribution | Video Switching Matrix |
|---|---|
Use Scenario: Routing uncompressed 1080p60 RGB/YUV signals across 16×16 broadcast router with minimal skew and distortion. IC Role / Device Role / Timing Role: Quad-channel line driver per board, providing gain, level-shifting, and 75Ω source termination. Use Value: 250MHz bandwidth and 0.01% DG/DP ensure pixel-perfect color reproduction and zero visible artifacts after 10+ distribution hops. |
Use Scenario: Real-time switching between 8 camera feeds in live sports production with sub-frame latency. IC Role / Device Role / Timing Role: Four parallel video buffers per switch stage, isolating inputs and driving coaxial back-termination. Use Value: 12ns settling time and <1.5ns rise/fall enable glitch-free transitions during vertical blanking intervals. |
| Medical Endoscopy Imaging | Test Equipment Video Generator |
Use Scenario: Amplifying high-resolution CMOS sensor output in rigid endoscope with 3m coaxial cable run. IC Role / Device Role / Timing Role: Post-sensor analog gain stage compensating for cable loss while preserving SNR. Use Value: 1800V/μs slew rate prevents edge ringing on sharp tissue boundaries; −70dBc HD3 avoids false harmonics in diagnostic analysis. |
Use Scenario: Generating calibrated composite video test patterns (SMPTE bars, multiburst) in ATE rack system. IC Role / Device Role / Timing Role: Precision output driver ensuring flat frequency response and minimal group delay variation. Use Value: 0.1dB gain flatness to 120MHz guarantees accurate amplitude weighting across all test frequencies per SMPTE RP 219. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar wideband video amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH6722MAX/NOPB.A | Same die, tape-and-reel packaging (2500 pcs), identical electrical specs and SOIC-14 footprint | No functional difference; selected for automated SMT assembly vs. tube-packaged LMH6722MA/NOPB.A | Choose LMH6722MAX/NOPB.A for volume production; LMH6722MA/NOPB.A for prototyping or low-volume builds |
| LMH6722-Q1 | Automotive-grade variant (AEC-Q100 Grade 1), −40°C to +125°C operating range, enhanced ESD robustness | Qualified for automotive infotainment displays and ADAS camera links; not rated for commercial temp range only | Use LMH6722-Q1 only when extended temperature or automotive qualification is mandatory; otherwise LMH6722MA preferred for cost and availability |
Compared with LMH6722-Q1, the LMH6722MA offers identical video performance and bandwidth at lower cost and broader commercial availability, while LMH6722MAX/NOPB.A provides identical functionality in high-volume tape-and-reel format-enabling seamless transition from evaluation to mass production without design change.
Availability
LMH6722MA is available at Aetrix Electronics and suitable for HDTV signal distribution, broadcast video switching, medical imaging equipment, and test instrumentation requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for LMH6722MA 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 signal chain solutions.
The LMH6722MA belongs to TI's VIP10-based wideband video op amp family, engineered specifically for broadcast-quality video signal integrity-emphasizing differential gain/phase accuracy, high slew rate, and multi-channel crosstalk suppression in compact SOIC packaging.
FAQ
What is the recommended feedback resistor value for LMH6722MA at AV = +2?
The LMH6722MA datasheet specifies a recommended feedback resistor (RF) of 300Ω for non-inverting gain of +2V/V with ±5V supplies. This value delivers near-maximal bandwidth (250MHz), optimal gain flatness (0.1dB to 120MHz), and stable operation. Using RF = 147Ω causes peaking; RF = 400Ω improves stability but reduces bandwidth slightly. The LMH6722MA requires this external RF for proper current-feedback loop control-no internal compensation is provided.
Does LMH6722MA support single-supply operation?
The LMH6722MA is specified for split-supply operation (±4V to ±6.25V), with common-mode input range of ±2.2V and output swing of ±3.4V into 100Ω. While it can operate from a single +8V to +12.5V supply with appropriate DC biasing, TI does not characterize or guarantee performance under single-supply conditions. For true single-supply video applications, TI recommends alternatives like THS3201 or LMH6732, which are explicitly designed for rail-to-rail input/output and single-rail biasing.
What is the maximum output current capability of LMH6722MA?
The LMH6722MA delivers 70mA continuous output current per channel into resistive loads, verified at ±5V supplies and TA = 25°C. This allows driving one 150Ω back-terminated video line or two 75Ω lines simultaneously. Output current is limited by junction temperature: at TA = 70°C, the SOIC package (θJA = 130°C/W) supports ~55mA continuous before reaching 150°C max junction temperature. Peak pulsed current exceeds 100mA for short durations (<100ns).
How does LMH6722MA differ from LMH6720 in pinout and functionality?
The LMH6722MA is a quad-channel amplifier in 14-pin SOIC, with pins 1–4 and 5–8 assigned to four independent +IN/−IN/OUT sets plus shared V+/V− rails. The LMH6720 is a single-channel amplifier with shutdown (SD) pin, packaged in 6-pin SOT-23 or 8-pin SOIC. LMH6722MA has no shutdown function, higher channel count, and different pin mapping-making them incompatible for direct replacement. Their internal architectures are similar (VIP10 CFB), but LMH6722MA lacks TTL-compatible disable logic and associated timing specs (ton/toff).
Is LMH6722MA suitable for driving 75Ω coaxial cables directly?
Yes-the LMH6722MA is explicitly characterized for driving back-terminated 75Ω and 150Ω video loads, with differential gain/phase measured at RL = 150Ω. Its 70mA output current and low 0.06Ω closed-loop output impedance enable robust 75Ω source termination. For optimal return loss and minimal reflections, place a 75Ω series resistor at the amplifier output, adjacent to the connector. Avoid unterminated or shunt-terminated configurations, as they degrade bandwidth and increase distortion beyond datasheet specs.
LMH6722MA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Series:
- VIP10™
- Packaging:
- Tube
- Product Status:
- Obsolete
- Applications:
- Current Feedback
- Output Type:
- -
- Number of Circuits:
- 4
- -3db Bandwidth:
- 400 MHz
- Slew Rate:
- 1800V/µs
- Current - Supply:
- 5.6 mA
- Current - Output / Channel:
- 70 mA
- Voltage - Supply, Single/Dual (±):
- 8V ~ 12.5V, ±4V ~ 6.25V
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 14-SOIC
LMH6722MA FAQ
1.How can I place an order for LMH6722MA through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH6722MA 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 LMH6722MA reliable?
The price and inventory of LMH6722MA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH6722MA is usually 5 days.
3.What payment methods are accepted for LMH6722MA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH6722MA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH6722MA?
LMH6722MA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH6722MA 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 LMH6722MA?
For technical support, including LMH6722MA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH6722MA requirements.
6.How does Aetrix verify that LMH6722MA is sourced from the original manufacturer or authorized distributors?
All LMH6722MA 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 LMH6722MA meets industry standards.
7.What is the process for return or replacement of LMH6722MA?
All LMH6722MA units undergo pre-shipment inspection (PSI). If there is an issue with LMH6722MA, 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 LMH6722MA part is unused and in its original packaging.
Return procedure for LMH6722MA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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