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Texas Instruments LMH6624MA/NOPB
- Part No.:
- LMH6624MA/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMH6624MA/NOPB.pdf
- Description:
- IC VOLTAGE FEEDBACK 1 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:309
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Product details
Overview
LMH6624MA/NOPB 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 instrumentation sense amplifiers and ultrasound pre-amplifiers.
For engineers reviewing the LMH6624MA/NOPB datasheet, LMH6624MA/NOPB pinout, LMH6624MA/NOPB application, or LMH6624MA/NOPB equivalent, key selection criteria include its SOT-23-5 package footprint, ±2.5 V to ±6 V dual-supply operation, 700 µV max input offset voltage over temperature, and verified performance in low-distortion, high-speed transimpedance and active filter designs.
Technical Context
The LMH6624MA/NOPB employs a traditional voltage-feedback topology with balanced differential inputs, achieving 81 dB open-loop gain, 95 dB CMRR, and 88 dB PSRR-enabling high-precision DC-coupled gain stages. Its internal compensation ensures stability for |AV| ≥ 10 without external compensation components.
Designed for wide dynamic range, it maintains 0.92 nV/√Hz voltage noise and 2.3 pA/√Hz current noise up to 1 MHz while delivering −63 dBc HD2 and −80 dBc HD3 at 10 MHz into 100 Ω, supporting demanding RF and medical imaging signal chains where SNR preservation is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 1.5 GHz - Enables stable unity-gain-compensated operation up to 10× higher frequency than standard op-amps, supporting >100 MHz closed-loop filters. |
| Input Voltage Noise | 0.92 nV/√Hz @ 1 MHz - Critical for preserving SNR in low-level sensor interfaces like piezoelectric ultrasound transducers. |
| Slew Rate | 350 V/μs (AV = 20) - Supports full-scale 2 VPP output transitions in ≤5.7 ns, essential for fast pulse amplification without distortion. |
| Input Offset Voltage | 700 µV max over −40°C to +125°C - Ensures <±0.7 mV DC error in precision gain blocks without trimming, reducing calibration overhead. |
| Supply Range | ±2.5 V to ±6 V dual supply - Compatible with legacy ±3 V and modern ±5 V systems; also supports 5 V to 12 V single supply for simplified power architecture. |
| Harmonic Distortion | −63 dBc HD2 / −80 dBc HD3 @ 10 MHz - Meets stringent linearity requirements in professional audio and magnetic storage channel electronics. |
Pinout & Package
SOT-23-5 package (2.90 mm × 1.60 mm), surface-mount, thermally enhanced for high-speed analog applications requiring minimal parasitic capacitance and inductance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: OUT | Output | High-current, low-impedance (10 mΩ) output capable of sourcing/sinking ≥100 mA into 100 Ω load at ±6 V supply. |
| 2: V− | Negative Supply | Reference return for internal biasing; must be decoupled with ≤100 nF ceramic capacitor near pin for stability at >100 MHz. |
| 3: +IN | Non-inverting Input | High-impedance (6.6 MΩ common-mode, 4.6 kΩ differential) input with 0.9 pF capacitance; matched layout critical for CMRR. |
| 4: −IN | Inverting Input | Differential pair input node; requires symmetrical PCB routing and guard traces to minimize noise coupling in high-Z feedback networks. |
| 5: V+ | Positive Supply | Primary power rail; supplies internal gain stage and output driver; decoupling required within 2 mm of pin per RF design best practices. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low input voltage noise | 0.92 nV/√Hz enables sub-microvolt signal recovery in medical ultrasound pre-amplifiers without degrading system SNR. |
| Stable for |AV| ≥ 10 | Internally compensated for minimum closed-loop gain of 10, eliminating need for external compensation in most wideband gain configurations. |
| Low input offset drift | ±0.2 μV/°C over temperature ensures <±0.1 mV total offset shift across industrial −40°C to +125°C range, reducing thermal calibration burden. |
| High slew rate & bandwidth | 350 V/μs slew rate with 1.5 GHz GBW allows accurate reproduction of fast transient signals in optical receiver TIA stages. |
| Robust ESD protection | ±2000 V HBM rating permits safe handling in standard manufacturing environments without special ESD controls beyond IPC-ESD-STM20.20. |
Applications
| Instrumentation Sense Amplifiers | Ultrasound Pre-amplifiers |
|---|---|
Use Scenario: Amplifying microvolt-level signals from strain gauges and RTDs in automated test equipment. IC Role / Device Role / Timing Role: Primary low-noise gain stage in DC-coupled, high-precision measurement path. Use Value: 0.92 nV/√Hz noise floor preserves resolution of 24-bit ADCs; 700 µV max VOS avoids zero-point calibration drift. |
Use Scenario: Front-end amplification of echo signals from 5–15 MHz piezoelectric transducers in portable ultrasound systems. IC Role / Device Role / Timing Role: First-stage transimpedance amplifier with controlled bandwidth and minimal added noise. Use Value: −63 dBc HD2 at 10 MHz ensures clean harmonic-free imaging; 1.5 GHz GBW supports wide receive bandwidth without peaking. |
| Magnetic Tape & Disk Pre-amplifiers | Wide Band Active Filters |
Use Scenario: Signal conditioning of playback heads in high-density tape drives operating at >100 MB/s data rates. IC Role / Device Role / Timing Role: Low-noise, high-slew-rate amplifier in analog channel equalization and timing recovery circuits. Use Value: 2.3 pA/√Hz current noise minimizes Johnson noise contribution from high-impedance head circuits; 350 V/μs slew handles fast edge transitions. |
Use Scenario: Implementing 5th-order elliptic or Chebyshev filters with cutoff frequencies up to 100 MHz in RF test equipment. IC Role / Device Role / Timing Role: Unity-gain buffer and gain stage in multi-op-amp active filter topologies (e.g., state-variable, biquad). Use Value: Stable for |AV| ≥ 10 eliminates need for external compensation; 1.5 GHz GBW ensures flat group delay response through passband. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-noise, wideband op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH6629MA/NOPB | Higher 3.5 GHz GBW, 0.87 nV/√Hz noise, but requires |AV| ≥ 25 for stability and draws 18 mA vs. 16 mA. | Better suited for >200 MHz closed-loop designs; not drop-in due to different stability requirements and higher quiescent current. | Select when >1.5 GHz closed-loop bandwidth is required and layout can accommodate tighter stability margins. |
| ADA4898-1ARMZ | 0.9 nV/√Hz noise, 220 MHz GBW, ±0.1 µV/°C drift, but only 120 V/μs slew rate and limited to ±5 V max supply. | Optimized for precision DC/low-frequency applications; insufficient slew and bandwidth for ultrasound or tape head amplification. | Prefer for high-DC-accuracy, low-power applications below 50 MHz where ultra-low drift outweighs speed requirements. |
Compared with LMH6629MA/NOPB, LMH6624MA/NOPB offers proven stability at lower gains and lower power; versus ADA4898-1ARMZ, it delivers 3× higher slew rate and 7× greater bandwidth for time-critical wideband signal paths, albeit with slightly higher offset drift.
Availability
LMH6624MA/NOPB is available at Aetrix Electronics and suitable for instrumentation sense amplifiers, ultrasound pre-amplifiers, and wide band active filters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LMH6624MA/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-performance op-amp design and manufacturing.
The LMH6624MA/NOPB belongs to TI's LMH high-speed amplifier product line, engineered specifically for ultra-low-noise, wideband signal acquisition in medical imaging, test & measurement, and communications infrastructure.
FAQ
What is the maximum recommended supply voltage for LMH6624MA/NOPB?
The LMH6624MA/NOPB supports dual-supply operation from ±2.5 V to ±6 V (12 V total), with absolute maximum ratings specifying ±6.3 V. Exceeding ±6.3 V risks permanent damage per Section 6.1 of the datasheet. For single-supply use, the valid range is 5 V to 12 V, with 12 V being the upper limit confirmed in Recommended Operating Conditions.
Does LMH6624MA/NOPB require external compensation for unity-gain stability?
No, LMH6624MA/NOPB is not unity-gain stable. It is internally compensated for minimum closed-loop gain of |AV| ≥ 10, as explicitly stated in the Features section and validated in Figure 7 (Open Loop Frequency Response). Attempting unity-gain configuration will cause peaking and potential oscillation.
What is the input voltage noise specification of LMH6624MA/NOPB and at what frequency is it measured?
The LMH6624MA/NOPB has an input-referred voltage noise of 0.92 nV/√Hz, measured at 1 MHz under ±6 V supply conditions per Electrical Characteristics Table 6.6. This value remains consistent across temperature and is confirmed in both typical characteristics (Figure 1) and specification tables.
Can LMH6624MA/NOPB operate from a single 5 V supply?
Yes, LMH6624MA/NOPB supports single-supply operation from 5 V to 12 V, as specified in Section 1 (Description) and Table 6.3 (Recommended Operating Conditions). At 5 V, the output swing is typically ±1.0 V into 100 Ω, and input common-mode range extends from −0.5 V to +1.9 V, enabling rail-to-rail input capability with appropriate biasing.
What package type is used for LMH6624MA/NOPB and what are its key mechanical dimensions?
LMH6624MA/NOPB uses the SOT-23-5 package, with nominal body dimensions of 2.90 mm × 1.60 mm and a maximum height of 1.30 mm, as documented in the Device Information table. This 5-pin surface-mount package features gull-wing leads and is RoHS-compliant (NOPB suffix denotes lead-free finish).
LMH6624MA/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- 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/NOPB FAQ
1.How can I place an order for LMH6624MA/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH6624MA/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 LMH6624MA/NOPB reliable?
The price and inventory of LMH6624MA/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH6624MA/NOPB is usually 5 days.
3.What payment methods are accepted for LMH6624MA/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH6624MA/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH6624MA/NOPB?
LMH6624MA/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH6624MA/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 LMH6624MA/NOPB?
For technical support, including LMH6624MA/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH6624MA/NOPB requirements.
6.How does Aetrix verify that LMH6624MA/NOPB is sourced from the original manufacturer or authorized distributors?
All LMH6624MA/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 LMH6624MA/NOPB meets industry standards.
7.What is the process for return or replacement of LMH6624MA/NOPB?
All LMH6624MA/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMH6624MA/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 LMH6624MA/NOPB part is unused and in its original packaging.
Return procedure for LMH6624MA/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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