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Texas Instruments LMH6683MAX/NOPB
- Part No.:
- LMH6683MAX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMH6683MAX/NOPB.pdf
- Description:
- IC OPAMP VFB 3 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,951
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Product details
Overview
LMH6683MAX/NOPB from Texas Instruments is a triple, high-speed, single-supply voltage-feedback operational amplifier optimized for video signal conditioning. It delivers 190MHz −3dB bandwidth (A = +2, ±5V), 940V/μs slew rate, 0.01% differential gain error, and 0.08° differential phase error at NTSC 3.58MHz - enabling precision composite video amplification in portable and embedded systems.
For engineers reviewing the LMH6683MAX/NOPB datasheet, LMH6683MAX/NOPB pinout, LMH6683MAX/NOPB application, or LMH6683MAX/NOPB equivalent, key selection criteria include video-grade AC performance (DG/DP), rail-to-rail output swing capability (0.8V from rails into 2kΩ), input common-mode range extending 0.5V beyond V−, low distortion (−82dBc HD3 @5MHz), and immunity to output phase reversal under input overdrive.
Technical Context
The LMH6683MAX/NOPB employs a voltage-feedback topology with a class-AB input stage that delivers exponential transconductance versus input differential voltage - enabling higher slew rate at large signal amplitudes without saturation. This architecture supports stable operation at gains ≥+2 and ≤−1 while maintaining 190MHz bandwidth and <2ns rise time.
Its input stage operates down to 0.5V below V− and up to 1.7V from V+, and the output swings within 0.8V of either rail into 2kΩ. The device is fabricated in TI's VIP10 process, balancing speed (190MHz) and quiescent current (6.5mA per channel) for power-sensitive video front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| −3dB Bandwidth | 190MHz at A = +2 (±5V supply); enables full NTSC/PAL video bandwidth with margin |
| Slew Rate | 940V/μs (±5V, A = +2); supports fast transient response for sync pulses and sharp edges |
| Differential Gain Error | 0.01% (NTSC 3.58MHz, RL = 150Ω); preserves color saturation fidelity in analog video chains |
| Differential Phase Error | 0.08° (NTSC 3.58MHz, RL = 150Ω); maintains accurate hue reproduction across brightness levels |
| Supply Current per Channel | 6.5mA (typ., no load); allows triple-channel video buffering with low system power overhead |
| Input Common-Mode Range | Extends 0.5V below V− and 1.7V from V+; accommodates ground-referenced video signals on single supply |
| Output Voltage Swing | 0.8V from rails into 2kΩ; delivers >4VPP dynamic range on 5V supply for standard video levels |
Pinout & Package
LMH6683MAX/NOPB is housed in a 14-pin SOIC (D) package with 1.27mm pitch, 8.65mm × 3.91mm body, and exposed pad not present. Pinout conforms to standard triple op-amp configuration with independent inputs/outputs per channel and shared power pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Ch1) | High-impedance node accepting feedback or signal inversion path for first amplifier |
| 2 | Non-Inverting Input (Ch1) | High-Z input for single-ended or differential signal routing to first amplifier |
| 3 | Output (Ch1) | Low-impedance, high-current output capable of ±85/−80mA drive into video loads |
| 4 | V− (GND for single supply) | Power return reference; supports input common-mode down to 0.5V below this pin |
| 5 | Inverting Input (Ch2) | Second amplifier's inverting input; electrically isolated from Ch1/Ch3 for crosstalk <−78dB @5MHz |
| 6 | Non-Inverting Input (Ch2) | Second amplifier's non-inverting input; shares same input stage architecture as Ch1/Ch3 |
| 7 | Output (Ch2) | Independent output with identical drive strength and swing to Ch1 |
| 8 | Output (Ch3) | Third amplifier output; fully functional with same AC/DC specs as Ch1/Ch2 |
| 9 | Non-Inverting Input (Ch3) | Third amplifier input; enables three-channel parallel video processing (e.g., Y/Cb/Cr) |
| 10 | Inverting Input (Ch3) | Third amplifier inverting input; supports individual gain-setting resistors per channel |
| 11 | V+ | Positive supply rail; accepts 3V–12V operation; thermal resistance θJA = 145°C/W |
| 12 | NC | No connect; internal die pad not bonded; must remain unconnected on PCB |
| 13 | NC | No connect; internal test structure; leave floating or grounded per layout best practice |
| 14 | NC | No connect; unused bond wire; no electrical function |
Key Features
| Feature | Design Value |
|---|---|
| Video-optimized AC performance | 0.01% DG / 0.08° DP at NTSC 3.58MHz ensures broadcast-grade color fidelity in composite video paths |
| Phase reversal immunity | Outputs clamp at rail instead of inverting when inputs exceed common-mode range - eliminates need for external clamping in servo or video sync circuits |
| Rail-to-rail output swing | 0.8V from V+ or V− into 2kΩ enables >4VPP signal delivery on 5V supply - matches standard video level requirements |
| High output drive | +85/−80mA output current supports direct driving of 75Ω coaxial cables or multiple 150Ω video loads without buffers |
| Low distortion in inverting mode | −82dBc HD3 @5MHz (RL = 2kΩ) makes it suitable for ADC front-end buffering where linearity is critical |
Applications
| Composite Video Amplifier | ADC Front-End Buffer |
|---|---|
Use Scenario: Amplifying NTSC/PAL composite video signals in portable DVD players or set-top boxes before encoding or display processing. IC Role / Device Role / Timing Role: Triple op-amp configured as Y/Cb/Cr channel amplifier with unity-gain followers and DC restoration. Use Value: 0.01% differential gain and 0.08° phase error preserve color accuracy across brightness levels without post-correction. |
Use Scenario: Driving the input of a 12-bit, 10MSPS SAR ADC in industrial data acquisition systems with varying source impedances. IC Role / Device Role / Timing Role: Low-noise, high-slew-rate buffer isolating sensor signal from ADC sampling kickback and capacitive loading. Use Value: 940V/μs slew rate and 12nV/√Hz input noise ensure faithful signal capture without distortion or settling errors. |
| Portable Communications Interface | Current Sense Amplifier |
Use Scenario: Conditioning baseband I/Q signals in handheld radios or software-defined radio modules operating from single 3.3V or 5V rails. IC Role / Device Role / Timing Role: Triple-channel signal conditioner providing matched gain, bandwidth, and phase response for quadrature demodulation paths. Use Value: 190MHz bandwidth and <2ns rise time support >50MHz IF bandwidths; input CMVR extends below ground for bipolar signal handling. |
Use Scenario: Amplifying mV-level shunt voltage drops in battery management systems or motor control inverters with wide dynamic range. IC Role / Device Role / Timing Role: Precision current sense amplifier with high common-mode rejection (84dB CMRR) and rail-to-rail output for microcontroller ADC interfacing. Use Value: 6.5mA supply current per channel enables always-on monitoring; output swing to 0.8V from rail ensures full-scale utilization of 3.3V ADC reference. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH6683MA/NOPB | Same die, SOIC-14 tube packaging (95 pcs); identical electrical specs and pinout | No difference in circuit design or layout; only packaging and reel/tube logistics differ | Select LMH6683MA/NOPB for low-volume prototyping or manual assembly; LMH6683MAX/NOPB for automated SMT production |
| LMH6629MA/NOPB | Higher bandwidth (1.5GHz), lower noise (2.9nV/√Hz), but higher supply current (12.5mA/ch) and no DG/DP characterization | Better suited for RF/IF amplification or ultra-low-noise preamps; lacks video-specific AC validation | Choose LMH6629MA/NOPB only when bandwidth/noise outweigh video fidelity requirements; not drop-in for NTSC/PAL systems |
Compared with LMH6683MA/NOPB, LMH6683MAX/NOPB offers identical performance in tape-and-reel format for volume manufacturing, while LMH6629MA/NOPB trades video-optimized linearity for raw speed and noise - making it unsuitable as a direct replacement in broadcast-grade video signal paths.
Availability
LMH6683MAX/NOPB is available at Aetrix Electronics and suitable for composite video amplification, ADC front-end buffering, portable communications interface conditioning, and current sense amplification requiring stable component supply across industrial temperature ranges (−40°C to +85°C).
Supply support for LMH6683MAX/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 op-amps and video signal chain solutions.
The LMH6683MAX/NOPB belongs to TI's LMH66xx video op-amp family, engineered specifically for analog video signal integrity - emphasizing differential gain/phase accuracy, fast settling, and robustness in portable and cost-sensitive consumer and industrial systems.
FAQ
What is the maximum supply voltage for LMH6683MAX/NOPB?
The LMH6683MAX/NOPB supports a total supply voltage range of 3V to 12V (V+ − V−). Absolute maximum rating is 12.6V; operation above this risks permanent damage. For ±5V split-supply use, V+ = +5V and V− = −5V yields optimal 190MHz bandwidth and 940V/μs slew rate - as specified in the official SNOSA43A datasheet.
Does LMH6683MAX/NOPB support single-supply operation with ground-referenced inputs?
Yes, LMH6683MAX/NOPB supports true single-supply operation: its input common-mode voltage range extends 0.5V below V− (i.e., to −0.5V when V− = 0V), allowing direct connection of ground-referenced video signals. Output swings to within 0.8V of either rail into 2kΩ, delivering usable dynamic range on 3.3V or 5V supplies without level-shifting circuitry.
Is LMH6683MAX/NOPB pin-compatible with other triple op-amps like LM358 or TL074?
No, LMH6683MAX/NOPB is not pin-compatible with LM358 or TL074. It uses a 14-pin SOIC package with dedicated pins for three independent op-amps (including separate inverting/non-inverting inputs per channel), whereas LM358 (SOIC-8) and TL074 (SOIC-14) follow different pinouts and lack video-optimized AC specs. Direct substitution requires PCB redesign.
What is the thermal resistance (θJA) of LMH6683MAX/NOPB in SOIC-14 package?
The junction-to-ambient thermal resistance (θJA) for LMH6683MAX/NOPB in SOIC-14 package is 145°C/W, as specified in the Operating Ratings table of SNOSA43A. This value assumes standard JEDEC 2-layer board mounting; actual thermal performance improves with copper pour, thermal vias, or reduced ambient temperature.
Can LMH6683MAX/NOPB drive a 75Ω video load directly?
Yes, LMH6683MAX/NOPB can drive a 75Ω load directly: it delivers ±85/−80mA output current and maintains 0.01% differential gain at NTSC 3.58MHz into 150Ω. While 75Ω increases current demand, the device sustains full video bandwidth and low distortion - verified in TI's application notes and typical performance curves (Figures 14, 35–36).
LMH6683MAX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMH®
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 3
- Output Type:
- -
- Slew Rate:
- 940V/µs
- Gain Bandwidth Product:
- 120 MHz
- -3db Bandwidth:
- 190 MHz
- Current - Input Bias:
- 5 µA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 6.5mA (x3 Channels)
- Current - Output / Channel:
- 85 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 12 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
LMH6683MAX/NOPB FAQ
1.How can I place an order for LMH6683MAX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH6683MAX/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 LMH6683MAX/NOPB reliable?
The price and inventory of LMH6683MAX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH6683MAX/NOPB is usually 5 days.
3.What payment methods are accepted for LMH6683MAX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH6683MAX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH6683MAX/NOPB?
LMH6683MAX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH6683MAX/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 LMH6683MAX/NOPB?
For technical support, including LMH6683MAX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH6683MAX/NOPB requirements.
6.How does Aetrix verify that LMH6683MAX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMH6683MAX/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 LMH6683MAX/NOPB meets industry standards.
7.What is the process for return or replacement of LMH6683MAX/NOPB?
All LMH6683MAX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMH6683MAX/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 LMH6683MAX/NOPB part is unused and in its original packaging.
Return procedure for LMH6683MAX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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