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Texas Instruments LMH6624MA
- Part No.:
- LMH6624MA
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMH6624MA.pdf
- Description:
- IC VOLTAGE FEEDBACK 1 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,197
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Product details
Overview
LMH6624MA from Texas Instruments is a single-channel ultra-low-noise, wideband voltage-feedback operational amplifier optimized for high-fidelity signal conditioning in precision analog front-ends. It delivers 1.5 GHz gain bandwidth, 0.92 nV/√Hz input voltage noise, and 350 V/μs slew rate at ±6 V supply, enabling stable closed-loop operation with |AV| ≥10 in both inverting and non-inverting configurations - critical for ultrasound pre-amplifiers and instrumentation sense amplifiers.
For engineers reviewing the LMH6624MA datasheet, LMH6624MA pinout, LMH6624MA application, or LMH6624MA equivalent, this page provides verified package mapping (SOT-23-5), confirmed DC and AC specifications across ±2.5 V to ±6 V operation, thermal resistance (RθJA = 265°C/W), and two validated alternative op-amps with documented functional trade-offs for low-noise, high-speed design review.
Technical Context
The LMH6624MA employs a traditional voltage-feedback topology with balanced differential inputs, achieving 81 dB open-loop gain, 95 dB CMRR, and 88 dB PSRR. Its internal architecture supports stable operation with closed-loop gains ≥10 without external compensation, enabled by controlled dominant-pole response and low input capacitance (2.0 pF differential).
It operates over ±2.25 V to ±6.3 V dual-supply or 5 V to 12 V single-supply ranges, with guaranteed performance from −40°C to +125°C. Input offset voltage is limited to ±0.7 mV over temperature, and average drift is ±0.2 μV/°C - enabling precision DC-coupled gain stages in medical and test equipment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth | 1.5 GHz - enables stable unity-gain-compensated operation up to 10 MHz at AV = +100 without peaking. |
| Input Voltage Noise | 0.92 nV/√Hz at 1 MHz - minimizes added noise in low-source-impedance sensor interfaces (e.g., piezoelectric transducers). |
| Slew Rate | 400 V/μs at AV = +10 - supports full-scale 2 VPP output at 10 MHz without slewing distortion. |
| Input Offset Voltage | ±0.7 mV max over −40°C to +125°C - ensures <100 μV error in 100× gain stages across industrial temperature range. |
| Supply Range | ±2.25 V to ±6.3 V dual or 5–12 V single - compatible with legacy ±5 V and modern low-voltage 3.3 V/5 V systems via level-shifting. |
| HD2 / HD3 | −63 dBc / −80 dBc at 10 MHz, RL = 100 Ω - preserves signal integrity in wideband active filters and RF IF amplifiers. |
| CMRR | 95 dB typical at 25°C - rejects common-mode interference in differential-sensing applications like magnetic tape playback heads. |
Pinout & Package
SOT-23-5 package (2.90 mm × 1.60 mm body size) with exposed pad for thermal enhancement; suitable for space-constrained PCB layouts in portable diagnostic and audio equipment.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Output | Amplified single-ended output node; drives 100 Ω loads to ±4.9 V swing at ±6 V supply. |
| 2 (V−) | Negative Supply | Return path for internal bias current; must be decoupled with ≤100 nF ceramic capacitor near pin. |
| 3 (+IN) | Non-inverting Input | High-impedance (6.6 MΩ common-mode) input; connects to reference or sensor high-side in instrumentation amps. |
| 4 (−IN) | Inverting Input | Differential input node; used with feedback network to set closed-loop gain and bandwidth. |
| 5 (V+) | Positive Supply | Main power rail; supplies internal gain stage and output driver; requires local 100 nF + 1 μF decoupling. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low input voltage noise | 0.92 nV/√Hz enables sub-100 μV RMS noise floor in 10 MHz bandwidth with 50 Ω source impedance. |
| Stable for |AV| ≥10 | No external compensation required for gains ≥10 - reduces BOM count and layout sensitivity in production designs. |
| Low input bias current drift | Average drift of ±0.2 μV/°C maintains DC accuracy in thermally varying environments (e.g., MRI front-ends). |
| High slew rate with low distortion | 400 V/μs slew at AV = +10 with −80 dBc HD3 preserves harmonic fidelity in professional audio line drivers. |
| Wide supply range | Operates from ±2.25 V to ±6.3 V - supports both battery-powered portable gear and rack-mounted test instruments. |
Applications
| Ultrasound Pre-amplifiers | Instrumentation Sense Amplifiers |
|---|---|
Use Scenario: Amplifying weak, high-frequency echo signals (1–15 MHz) from piezoelectric transducers in portable ultrasound machines. IC Role / Device Role / Timing Role: First-stage low-noise voltage amplifier with fixed gain ≥20 to maximize SNR before ADC digitization. Use Value: 0.92 nV/√Hz noise and 1.5 GHz GBW preserve time-domain resolution of microsecond-scale echoes without added jitter. | Use Scenario: Conditioning millivolt-level outputs from strain gauges or RTDs in industrial process controllers. IC Role / Device Role / Timing Role: Precision DC-coupled gain block with low offset drift and high CMRR for ratiometric measurements. Use Value: ±0.7 mV VOS limit and ±0.2 μV/°C drift ensure <0.05% gain error over −40°C to +85°C ambient range. |
| Magnetic Tape Playback | Wideband Active Filters |
Use Scenario: Recovering high-frequency analog audio signals (up to 20 MHz) from analog tape heads in broadcast restoration systems. IC Role / Device Role / Timing Role: Low-distortion, wideband buffer and equalization stage in analog signal chain prior to DAC. Use Value: −80 dBc HD3 at 10 MHz prevents harmonic contamination of high-fidelity audio waveforms during playback. | Use Scenario: Implementing 4th-order Chebyshev or Bessel filters in optical receiver front-ends for fiber channel receivers. IC Role / Device Role / Timing Role: High-speed active filter section with precise pole placement enabled by stable high-GBW response. Use Value: 1.5 GHz GBW allows accurate filter cutoff definition up to 100 MHz without phase shift degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-noise, wideband operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA847IDBVR | Higher 3.9 GHz GBW but 1.04 nV/√Hz noise; 20 mA supply current vs. 16 mA for LMH6624MA. | Better for >50 MHz closed-loop designs; less optimal for battery-powered ultrasound where noise dominates. | Select OPA847IDBVR when bandwidth >2 GHz is required and noise budget allows +0.12 nV/√Hz penalty. |
| ADA4898-1ARZ | Lower 0.9 nV/√Hz noise and ±0.05 mV VOS, but only 220 MHz GBW and higher 12.5 mA supply current. | Preferred for DC-precision + low-noise applications below 50 MHz (e.g., precision data acquisition). | Choose ADA4898-1ARZ when ultra-low offset and sub-1 nV/√Hz noise outweigh bandwidth needs. |
Compared with OPA847IDBVR and ADA4898-1ARZ, the LMH6624MA uniquely balances 1.5 GHz bandwidth, 0.92 nV/√Hz noise, and 16 mA supply current - making it optimal for portable ultrasound and high-fidelity analog front-ends where both speed and noise are constrained.
Availability
LMH6624MA is available at Aetrix Electronics and suitable for ultrasound pre-amplifiers, instrumentation sense amplifiers, magnetic tape playback circuits, and wideband active filters requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for LMH6624MA 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 company specializing in analog and embedded processing technologies, with leadership in high-performance op-amps, data converters, and power management ICs.
The LMH6624MA belongs to TI's LMH high-speed amplifier product line, designed specifically for demanding wideband, low-noise applications including medical imaging, test equipment, and professional audio systems.
FAQ
What is the maximum operating supply voltage for LMH6624MA?
The LMH6624MA supports dual-supply operation from ±2.25 V to ±6.3 V and single-supply operation from 5 V to 12 V. Absolute maximum supply voltage (V+ − V−) is 13.2 V. Exceeding ±6.3 V or 12 V risks permanent damage per the Absolute Maximum Ratings table in the datasheet. Operation at ±6 V yields optimal slew rate (400 V/μs) and output swing (±4.9 V).
Does LMH6624MA require external compensation for AV = +10?
No, the LMH6624MA is internally compensated and explicitly specified as stable for closed-loop gains |AV| ≥10 in both inverting and non-inverting configurations. No external compensation components are needed - simplifying layout and reducing component count. This stability is verified across temperature and supply variations per the datasheet's "Stable for Closed Loop |AV| ≥10" feature statement.
What is the thermal resistance (RθJA) of LMH6624MA in SOT-23-5 package?
The LMH6624MA in SOT-23-5 (DBV) package has a junction-to-ambient thermal resistance (RθJA) of 265°C/W, as specified in Section 6.4 of the datasheet. This value assumes standard JEDEC 2-layer board conditions. For continuous operation at full output current, ambient temperature must remain below ~85°C to keep junction temperature under the 150°C absolute maximum limit.
Can LMH6624MA drive a 50 Ω load directly?
The LMH6624MA can drive 100 Ω loads to ±4.9 V swing at ±6 V supply, but driving 50 Ω continuously exceeds its safe output current limit (100 mA sourcing/sinking). For 50 Ω termination, use a series resistor (e.g., 50 Ω) to isolate the load while preserving signal integrity - or add an external current-boosting stage. The datasheet specifies IOUT = 100 mA at VO = ±4.3 V, not into 50 Ω.
Is LMH6624MA pin-compatible with CLC425?
Yes - the LMH6624MA is an improved replacement for the CLC425, sharing identical SOT-23-5 pinout (OUT, V−, +IN, −IN, V+). Electrical improvements include lower input noise (0.92 nV/√Hz vs. 1.2 nV/√Hz), higher GBW (1.5 GHz vs. 1.1 GHz), and better distortion (−80 dBc HD3 vs. −72 dBc). No PCB changes are required for drop-in replacement in existing CLC425 designs.
LMH6624MA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 400V/µs
- Gain Bandwidth Product:
- 1.5 GHz
- -3db Bandwidth:
- 95 MHz
- Current - Input Bias:
- 13 µA
- Voltage - Input Offset:
- 100 µV
- Current - Supply:
- 12mA
- Current - Output / Channel:
- 100 mA
- Voltage - Supply Span (Min):
- 5 V
- Voltage - Supply Span (Max):
- 12 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
LMH6624MA FAQ
1.How can I place an order for LMH6624MA through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH6624MA 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 LMH6624MA reliable?
The price and inventory of LMH6624MA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH6624MA is usually 5 days.
3.What payment methods are accepted for LMH6624MA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH6624MA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH6624MA?
LMH6624MA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH6624MA 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 LMH6624MA?
For technical support, including LMH6624MA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH6624MA requirements.
6.How does Aetrix verify that LMH6624MA is sourced from the original manufacturer or authorized distributors?
All LMH6624MA 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 LMH6624MA meets industry standards.
7.What is the process for return or replacement of LMH6624MA?
All LMH6624MA units undergo pre-shipment inspection (PSI). If there is an issue with LMH6624MA, 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 LMH6624MA part is unused and in its original packaging.
Return procedure for LMH6624MA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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