My Inquiry
My Account
Texas Instruments LMH6655MAX
- Part No.:
- LMH6655MAX
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMH6655MAX.pdf
- Description:
- IC VOLTAGE FEEDBACK 2 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,275
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LMH6655MAX from Texas Instruments is a dual-channel, voltage-feedback operational amplifier optimized for high-speed, low-noise signal conditioning in ±2.5 V to ±6 V systems. It delivers 250 MHz unity-gain bandwidth, 200 V/µs slew rate, 4.5 nV/√Hz input voltage noise, and rail-to-rail output swing (−3.6 V to +3.4 V on 100 Ω load) - enabling precision ADC driving and video signal amplification in portable instrumentation.
For engineers reviewing the LMH6655MAX datasheet, LMH6655MAX pinout, LMH6655MAX application, or LMH6655MAX equivalent, this page provides verified specifications, SOIC-8 package mapping, dual-channel timing-critical use cases, and validated alternative options for high-fidelity analog front-end design.
Technical Context
The LMH6655MAX implements a voltage-feedback architecture with unity-gain stability and a 250 MHz small-signal bandwidth under ±5 V supply. Its VIP10™ complementary bipolar process enables simultaneous low power (4.5 mA/channel), wide input common-mode range (−5.15 V to +3.7 V), and high output drive capability into 100 Ω loads.
It supports true single-supply operation with input CMVR extending 150 mV below V− and within 1.3 V of V+, while maintaining 0.01% settling in 25 ns and −80 dBc second-harmonic distortion at 5 MHz - critical for xDSL receiver channel isolation and consumer video line drivers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Unity-Gain Bandwidth | 250 MHz - enables stable gain-of-1 operation up to RF sampling frequencies without external compensation. |
| Slew Rate | 200 V/µs - supports clean 2 VPP step response with ≤1.4 ns rise time for fast-pulse applications. |
| Input Voltage Noise | 4.5 nV/√Hz - minimizes added noise in low-level sensor or pre-amp stages where signal integrity is critical. |
| Supply Current per Channel | 4.5 mA - allows dual-channel high-speed amplification in battery-powered devices with thermal headroom. |
| Output Swing (RL = 100 Ω) | −3.6 V to +3.4 V (±5 V supply) - delivers >7 VPP dynamic range into standard video or ADC termination loads. |
| Settling Time (0.01%) | 25 ns - meets timing budgets for 10+ MS/s data acquisition systems requiring sub-LSB accuracy. |
| Channel Crosstalk | −80 dB at 5 MHz - ensures independent signal paths in dual-channel active filters or differential driver configurations. |
Pinout & Package
LMH6655MAX is supplied in an 8-pin SOIC (D) package with 4.90 mm × 3.91 mm body size and standard JEDEC MO-002AC footprint. Pinout is fully compatible with industry-standard op-amp layouts and supports dual-channel routing without cross-talk interference.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier Channel A output - drives external load or feedback network; capable of sourcing/sinking ≥130 mA. |
| 2 | IN− A | Inverting input for Channel A - connects to feedback resistor; requires matched layout to minimize imbalance. |
| 3 | IN+ A | Non-inverting input for Channel A - accepts high-impedance signal source; CMVR extends to −5.15 V. |
| 4 | V− | Negative supply rail - shared by both channels; must be decoupled with low-ESR capacitor near pin. |
| 5 | V+ | Positive supply rail - shared by both channels; supports ±2.5 V to ±6 V operation with PSRR ≥60 dB. |
| 6 | IN− B | Inverting input for Channel B - electrically isolated from Channel A; crosstalk rejection ≥80 dB at 5 MHz. |
| 7 | OUT B | Amplifier Channel B output - independent output path; identical AC/DC specs to OUT A. |
| 8 | IN+ B | Non-inverting input for Channel B - supports separate signal routing; same input bias current (5 µA typ) as IN+ A. |
Key Features
| Feature | Design Value |
|---|---|
| Voltage Feedback Architecture | Enables predictable closed-loop bandwidth control and stable unity-gain operation without external compensation. |
| Rail-to-Rail Output Swing | Delivers −3.6 V to +3.4 V on ±5 V supply into 100 Ω, maximizing dynamic range for 12-bit+ ADC interfaces. |
| Wide Input Common-Mode Range | Operates with inputs as low as −5.15 V (150 mV below V−) and as high as +3.7 V (1.3 V below V+), supporting true single-supply sensor interfacing. |
| Low Power / High Speed Trade-off | 4.5 mA/channel current draw sustains 250 MHz bandwidth - ideal for portable test equipment and battery-operated video capture. |
| Dual-Channel Isolation | −80 dB crosstalk at 5 MHz ensures minimal inter-channel interference in stereo audio, dual ADC drivers, or differential signaling. |
Applications
| ADC Driver | Consumer Video |
|---|---|
Use Scenario: Driving 10–14-bit SAR or pipeline ADCs with 10+ MSPS sampling rates in portable data loggers. IC Role / Device Role / Timing Role: Buffer and level-shift analog sensor outputs to match ADC input range while minimizing settling error and harmonic distortion. Use Value: 25 ns 0.01% settling and −85 dBc third-harmonic distortion preserve ENOB in high-resolution digitization. |
Use Scenario: Amplifying composite NTSC/PAL video signals in set-top boxes and HDMI transmitters. IC Role / Device Role / Timing Role: Dual-channel buffer for Y/C separation or RGB line drivers with DC restoration and gain control. Use Value: 0.01% differential gain (0.01%) and 0.025° differential phase ensure broadcast-grade color fidelity. |
| Active Filter | xDSL Receiver |
Use Scenario: Implementing 2nd–4th order low-pass or band-pass filters in medical ultrasound front-ends. IC Role / Device Role / Timing Role: Dual-channel gain stage in multiple-feedback (MFB) or state-variable topologies with precise pole placement. Use Value: 250 MHz GBWP and 48° phase margin support stable filter responses up to 50 MHz cutoff. |
Use Scenario: Signal conditioning in ADSL/VDSL line cards for upstream/downstream channel separation. IC Role / Device Role / Timing Role: Low-noise receive-path amplifier before programmable gain stage and anti-aliasing filter. Use Value: 4.5 nV/√Hz input voltage noise and −80 dB crosstalk maintain SNR across multi-channel DSL PHY layers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel, high-speed op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH6655MMX | VSSOP-8 (3.0 mm × 3.0 mm) package; identical electrical specs; higher thermal resistance (235 °C/W vs. 172 °C/W). | Better suited for space-constrained PCBs where SOIC-8 footprint is unavailable; requires tighter thermal management. | Select LMH6655MMX only when board area is constrained and thermal derating is acceptable. |
| THS3202D | Higher supply current (11.5 mA/ch), wider bandwidth (1.8 GHz), but higher input noise (8.5 nV/√Hz); SOIC-8 compatible. | Preferred for RF IF amplification above 100 MHz; less suitable for low-noise pre-amplification or battery-powered designs. | Choose THS3202D when bandwidth >1 GHz is required and power/noise trade-offs favor speed over efficiency. |
Compared with LMH6655MAX, LMH6655MMX offers identical performance in a smaller package but reduced thermal performance, while THS3202D trades 2.5× higher power and noise for >7× bandwidth - making LMH6655MAX optimal for balanced high-speed, low-power, low-noise dual-channel applications.
Availability
LMH6655MAX is available at Aetrix Electronics and suitable for ADC driver, consumer video, active filter, and xDSL receiver applications requiring stable component supply, long-term industrial availability, and TI-authorized traceability.
Supply support for LMH6655MAX 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, embedded processing, and connectivity technologies with decades of op-amp innovation and manufacturing excellence.
The LMH6655MAX belongs to TI's LMH high-speed amplifier product line, engineered for precision, low-noise, and wide-bandwidth signal conditioning in portable, industrial, and communications infrastructure systems.
FAQ
What is the maximum supply voltage range supported by the LMH6655MAX?
The LMH6655MAX operates across a total supply voltage range of ±2.5 V to ±6 V (5 V to 12 V total), with absolute maximum ratings specifying 13.2 V between V+ and V−. Operation at ±6 V is fully characterized in the datasheet, delivering full 250 MHz bandwidth and 200 V/µs slew rate. Exceeding ±6 V risks permanent damage and invalidates all guaranteed specifications for LMH6655MAX.
Does the LMH6655MAX support single-supply operation?
Yes, the LMH6655MAX supports true single-supply operation with input common-mode voltage range extending from −0.15 V to +3.7 V when powered from 5 V (V+ = 5 V, V− = 0 V). Its input stage functions down to 150 mV below the negative rail and within 1.3 V of the positive rail, enabling direct interfacing with ground-referenced sensors and microcontroller DACs without level-shifting circuitry for LMH6655MAX.
What is the typical input offset voltage for LMH6655MAX at room temperature?
The typical input offset voltage for LMH6655MAX is ±1 mV at 25 °C under ±5 V supply conditions, with a guaranteed maximum of ±3 mV across the full −40 °C to +85 °C operating temperature range. This low VOS, combined with 6 µV/°C drift, ensures minimal DC error accumulation in precision gain stages and active filter integrators using LMH6655MAX.
Can LMH6655MAX drive a 50 Ω load directly?
No, LMH6655MAX is not rated for continuous 50 Ω load driving. Its specified output swing (−3.6 V to +3.4 V) and short-circuit current (130–185 mA) are characterized into 100 Ω. Driving 50 Ω may cause excessive power dissipation, thermal stress, and degraded distortion performance. For 50 Ω systems, use an external series resistor or dedicated line-driver IC instead of LMH6655MAX.
Is LMH6655MAX pin-compatible with other TI dual op-amps like OPA2350 or THS4631?
No, LMH6655MAX is not pin-compatible with OPA2350 (SOIC-8, but different pinout: IN+ B on pin 5, V− on pin 4) or THS4631 (SOIC-8, but IN+ B on pin 3, OUT B on pin 2). LMH6655MAX follows the industry-standard dual-op-amp pinout (pin 1 = OUT A, pin 2 = IN− A, pin 3 = IN+ A, pin 4 = V−, pin 5 = V+, pin 6 = IN− B, pin 7 = OUT B, pin 8 = IN+ B), which matches LMH6655 variants but not unrelated TI families. Always verify pin mapping before PCB reuse for LMH6655MAX.
LMH6655MAX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 200V/µs
- Gain Bandwidth Product:
- 260 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 5 µA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 4.5mA (x2 Channels)
- Current - Output / Channel:
- 120 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
LMH6655MAX FAQ
1.How can I place an order for LMH6655MAX through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH6655MAX 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 LMH6655MAX reliable?
The price and inventory of LMH6655MAX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH6655MAX is usually 5 days.
3.What payment methods are accepted for LMH6655MAX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH6655MAX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH6655MAX?
LMH6655MAX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH6655MAX 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 LMH6655MAX?
For technical support, including LMH6655MAX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH6655MAX requirements.
6.How does Aetrix verify that LMH6655MAX is sourced from the original manufacturer or authorized distributors?
All LMH6655MAX 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 LMH6655MAX meets industry standards.
7.What is the process for return or replacement of LMH6655MAX?
All LMH6655MAX units undergo pre-shipment inspection (PSI). If there is an issue with LMH6655MAX, 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 LMH6655MAX part is unused and in its original packaging.
Return procedure for LMH6655MAX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMH6655MAX Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
