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Texas Instruments LMH6552MA/NOPB
- Part No.:
- LMH6552MA/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMH6552MA/NOPB.pdf
- Description:
- IC OPAMP CFA 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,489
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Product details
Overview
LMH6552MA/NOPB from Texas Instruments is a 1.5-GHz fully differential current-feedback amplifier designed for high-fidelity signal conditioning in high-speed data acquisition systems. It delivers 1.5-GHz small-signal bandwidth at AV = 1, 3800-V/µs slew rate, and −90-dBc THD at 20 MHz while driving differential ADC inputs such as the ADC14DS105. Its integrated common-mode feedback enables precise VCM control independent of input common mode.
For engineers reviewing the LMH6552MA/NOPB datasheet, LMH6552MA/NOPB pinout, LMH6552MA/NOPB application, or LMH6552MA/NOPB equivalent, key selection criteria include differential output swing (15.4-VPP), enable/shutdown timing (15-ns), supply range (±2.5 V to ±5 V), and distortion performance up to 70 MHz in communication and instrumentation front ends.
Technical Context
The LMH6552MA/NOPB employs a proprietary differential current-mode input stage that maintains flat frequency response and low harmonic distortion across gains ≥1. Its dual-loop architecture separates differential gain control from output common-mode regulation via dedicated VCM input and error amplifier.
It supports both AC- and DC-coupled configurations, operates with ±2.5 V to ±5 V supplies, and features rail-to-rail output common-mode voltage control (±3.8 V) with 400-MHz small-signal bandwidth on the VCM path. The enable pin provides fast 15-ns transition between active and shutdown states with 600-µA quiescent current in disable mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-Signal BW | 1.5 GHz at AV = 1 - enables baseband-to-IF amplification without gain-dependent bandwidth collapse |
| Slew Rate | 3800 V/µs - supports clean 2-V step response with 10-ns 0.1% settling for fast transient fidelity |
| THD @ 20 MHz | −90 dBc - ensures >86-dBc SFDR when driving 14-bit ADCs like ADC14DS105 |
| Supply Range | ±2.5 V to ±5 V - accommodates both low-voltage portable and high-dynamic-range industrial rails |
| Enable Time | 15 ns - allows rapid power-gating in time-multiplexed signal chains without latency penalty |
| Input RIN | 15 Ω differential - matches 50-Ω source impedances directly, minimizing reflection in RF/IF paths |
| Output Swing | 15.4-VPP differential - delivers full-scale drive to 14-bit ADCs with headroom for SNR preservation |
Pinout & Package
LMH6552MA/NOPB is packaged in an 8-pin SOIC (D package), 4.90 mm × 3.91 mm body size, with exposed thermal pad (DAP) for enhanced heat dissipation in continuous high-output applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (−IN) | Inverting Input | Differential current-mode input node; 15-Ω impedance requires matched termination for optimal distortion |
| 2 (VCM) | Common-Mode Control | Analog input setting output common-mode voltage independently of signal path; 0.995–1.012 V/V gain |
| 3 (V+) | Positive Supply | Connects to +VS; supports up to +5 V; decoupling required within 1 cm for stability |
| 4 (+OUT) | Positive Output | Differential output terminal; balanced with −OUT for 0-dB balance error up to 1 MHz |
| 5 (−OUT) | Negative Output | Differential output terminal; paired with +OUT to deliver true complementary signals to ADC inputs |
| 6 (V−) | Negative Supply | Connects to −VS; supports down to −5 V; symmetric decoupling critical for PSRR >80 dB |
| 7 (EN) | Enable Control | Active-high digital input; 3-V threshold enables direct interfacing with 3.3-V logic; 15-ns toggle |
| 8 (+IN) | Non-Inverting Input | Differential current-mode input node; identical 15-Ω impedance and noise specs as −IN |
Key Features
| Feature | Design Value |
|---|---|
| Differential current-feedback topology | Maintains 1.5-GHz bandwidth and flat gain response across AV = 1 to 8 without peaking or phase degradation |
| Integrated VCM control loop | Enables precise, stable output common-mode voltage setting (±3.8 V range) independent of input CM level |
| Ultra-low distortion at 70 MHz | −74 dBc HD2 and −84 dBc HD3 support wideband IF sampling in communications receivers |
| Fast enable/disable with low ISD | 15-ns switching and 600-µA shutdown current allow dynamic power management in battery-sensitive systems |
| Thermally enhanced SOIC | Exposed DAP improves θJA to 150°C/W, enabling 1.2-W continuous operation at +85°C ambient |
Applications
| Differential ADC Driver | Video Over Twisted Pair |
|---|---|
Use Scenario: Driving the differential inputs of the ADC14DS105 14-bit, 105-MSPS analog-to-digital converter in high-resolution oscilloscope front ends. IC Role / Device Role / Timing Role: Fully differential amplifier providing gain, common-mode level shifting, and low-noise signal conditioning prior to digitization. Use Value: Achieves 86-dBc SFDR and 74-dBc SNR up to 40 MHz, preserving ENOB in high-speed data acquisition. | Use Scenario: Transmitting uncompressed HD video over Category 5/6 twisted-pair cabling in broadcast infrastructure equipment. IC Role / Device Role / Timing Role: Differential line driver converting single-ended video sources to robust balanced signals resistant to EMI and ground loops. Use Value: 1.5-GHz bandwidth and −90-dBc THD at 20 MHz ensure minimal color fidelity loss and edge integrity over 100-m runs. |
| Single-Ended to Differential Converter | IF/RF Amplifier |
Use Scenario: Converting legacy single-ended RF mixer outputs to differential inputs for high-performance IQ demodulators in SDR transceivers. IC Role / Device Role / Timing Role: Gain block with integrated common-mode feedback, eliminating need for external level-shifting circuitry. Use Value: 450-MHz 0.1-dB flatness and 3800-V/µs slew rate preserve amplitude and phase accuracy across 100-MHz IF bands. | Use Scenario: Amplifying intermediate-frequency signals (e.g., 70–250 MHz) in cellular base station receiver chains before downconversion. IC Role / Device Role / Timing Role: High-linearity IF buffer/amplifier operating in ±5-V supply configuration with optimized harmonic suppression. Use Value: −87-dBc IMD3 and −74-dBc HD2 at 70 MHz enable multi-carrier LTE signal handling without adjacent-channel interference. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fully differential amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH6554MA/NOPB | Higher 3-GHz bandwidth but lower output swing (12-VPP) and no integrated VCM control; requires external common-mode bias network | Better suited for >1-GHz IF amplification where VCM is fixed; not drop-in for ADC driver use cases requiring programmable VCM | Select LMH6554MA/NOPB only when bandwidth >2 GHz is mandatory and VCM is static; LMH6552MA/NOPB remains preferred for ADC interface flexibility |
| ADA4932-1ARZ | Lower 560-MHz bandwidth, higher 2.1-nV/√Hz input noise, and ±3.3-V max supply; includes internal feedback resistors | Targeted at lower-frequency precision instrumentation; lacks enable pin and fast settling for time-critical sampling | Choose ADA4932-1ARZ for sub-500-MHz, low-noise sensor signal chains; LMH6552MA/NOPB is superior for >500-MHz ADC drivers with dynamic power control |
Compared with LMH6554MA/NOPB and ADA4932-1ARZ, LMH6552MA/NOPB uniquely balances 1.5-GHz bandwidth, integrated VCM control, and 15.4-VPP output swing-making it the only option among the three qualified for high-SFDR, programmable common-mode ADC driving at 105 MSPS.
Availability
LMH6552MA/NOPB is available at Aetrix Electronics and suitable for high-speed data acquisition, broadband communications infrastructure, and test & measurement equipment requiring stable component supply and long-term production continuity.
Supply support for LMH6552MA/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 and embedded processing solutions for industrial, automotive, and communications markets.
The LMH6552MA/NOPB belongs to TI's high-speed differential amplifier product line, engineered specifically for low-distortion, wide-bandwidth signal conditioning in ADC front ends and RF/IF signal chains.
FAQ
What is the maximum supply voltage rating for LMH6552MA/NOPB?
The absolute maximum supply voltage for LMH6552MA/NOPB is ±6.6 V (13.2 V total), but recommended operation is ±2.5 V to ±5 V. Exceeding ±5 V reduces reliability and may trigger thermal shutdown in sustained high-output conditions. TI specifies 12-V maximum total supply in Recommended Operating Conditions, consistent with safe operation at ±5 V.
Does LMH6552MA/NOPB support DC-coupled input configurations?
Yes, LMH6552MA/NOPB supports both AC- and DC-coupled inputs. Its differential current-mode input stage and rail-to-rail common-mode control allow direct connection of DC-biased sources without blocking capacitors, provided input common-mode voltage stays within ±3.5 V (±3.8 V max) at ±5 V supply.
How does the VCM pin function in LMH6552MA/NOPB?
The VCM pin on LMH6552MA/NOPB sets the output common-mode voltage with 0.995–1.012 V/V gain and ±3.8 V range. It operates independently of the signal path, enabling precise level alignment to ADC reference voltages (e.g., 1.25 V or 2.5 V) without affecting differential gain or distortion performance.
What is the typical power consumption of LMH6552MA/NOPB at ±5 V supply?
At ±5 V supply and 25°C, LMH6552MA/NOPB draws 22.5 mA typical supply current (45 mA total), resulting in ~450 mW quiescent power. In shutdown mode, current drops to 600 µA, reducing power to <6 mW-critical for power-gated receiver channels in portable instrumentation.
Can LMH6552MA/NOPB drive 50-Ω differential loads directly?
LMH6552MA/NOPB is specified for 500-Ω differential loads in datasheet testing, but can drive 50-Ω loads with external series termination. For 50-Ω systems, use 450-Ω series resistors per output leg to match impedance and maintain stability; output swing reduces to ~6-VPP under 50-Ω load due to current limiting.
LMH6552MA/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMH®, PowerWise®
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Current Feedback
- Number of Circuits:
- 1
- Output Type:
- Differential
- Slew Rate:
- 3800V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 1.5 GHz
- Current - Input Bias:
- 60 µA
- Voltage - Input Offset:
- 1.5 mV
- Current - Supply:
- 22.5mA
- Current - Output / Channel:
- 80 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
LMH6552MA/NOPB FAQ
1.How can I place an order for LMH6552MA/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH6552MA/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 LMH6552MA/NOPB reliable?
The price and inventory of LMH6552MA/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH6552MA/NOPB is usually 5 days.
3.What payment methods are accepted for LMH6552MA/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH6552MA/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH6552MA/NOPB?
LMH6552MA/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH6552MA/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 LMH6552MA/NOPB?
For technical support, including LMH6552MA/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH6552MA/NOPB requirements.
6.How does Aetrix verify that LMH6552MA/NOPB is sourced from the original manufacturer or authorized distributors?
All LMH6552MA/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 LMH6552MA/NOPB meets industry standards.
7.What is the process for return or replacement of LMH6552MA/NOPB?
All LMH6552MA/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMH6552MA/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 LMH6552MA/NOPB part is unused and in its original packaging.
Return procedure for LMH6552MA/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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