My Inquiry
My Account
Texas Instruments LMH6504MMX/NOPB
- Part No.:
- LMH6504MMX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LMH6504MMX/NOPB.pdf
- Description:
- IC VARIABLE GAIN 1 CIRC 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,524
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LMH6504MMX/NOPB from Texas Instruments is a wideband, low-power, DC-coupled voltage-controlled variable gain amplifier (VGA) featuring 150 MHz −3 dB bandwidth, 80 dB gain adjustment range (<10 MHz), ±55 mV output offset voltage, and 1500 V/μs inverting slew rate. It integrates a transconductance input stage, linear-in-dB gain cell, and high-speed current-feedback output amplifier, enabling precise analog gain control in video imaging, AGC loops, and voltage-controlled filter applications.
For engineers reviewing the LMH6504MMX/NOPB datasheet, LMH6504MMX/NOPB pinout, LMH6504MMX/NOPB application, or LMH6504MMX/NOPB equivalent, key selection criteria include gain flatness (±0.2 dB up to 26 MHz), supply voltage range (±3.5 V to ±6 V), device-to-device gain matching (±0.42 dB at AVMAX), feed-through rejection (−53 dB at 30 MHz), and thermal stability across −40°C to +85°C.
Technical Context
The LMH6504MMX/NOPB implements a three-stage architecture: a transconductance input buffer (gain set by RG), a hyperbolic-tangent voltage-controlled multiplier (VG = 0–2 V), and a current-feedback output amplifier (gain set by RF). Its linear-in-dB gain response over 80 dB enables stable closed-loop AGC operation without logarithmic conversion circuitry.
Gain is resistor-programmable via external RF and RG (AVMAX = K·RF/RG, K = 0.965 typ), with independent control of signal bandwidth (via RF) and input voltage range (via RG). The high-impedance VG input (25 MΩ, 2.8 pF) and rail-to-rail output swing (±2.2 V into 100 Ω) support single-supply virtual-ground configurations while maintaining 150 MHz gain control bandwidth.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| −3 dB Bandwidth | 150 MHz - supports high-frequency video and RF IF signals without attenuation |
| Gain Adjustment Range | 80 dB (<10 MHz) - enables full dynamic range compression in AGC systems |
| Inverting Slew Rate | 1500 V/μs - ensures faithful reproduction of fast transient video edges and pulse signals |
| Output Offset Voltage | ±55 mV over full VG range - minimizes DC error accumulation in multi-stage analog signal chains |
| Input Noise Density | 4.4 nV/√Hz - preserves SNR in low-level signal amplification (e.g., CCD sensor outputs) |
| Supply Voltage Range | ±3.5 V to ±6 V - compatible with standard ±5 V rails and allows headroom optimization |
| Gain Matching | ±0.42 dB at AVMAX - ensures consistent channel-to-channel gain in multi-path imaging systems |
Pinout & Package
LMH6504MMX/NOPB is housed in an 8-pin VSSOP package (DGK008A), 3.0 mm × 3.0 mm, 0.65 mm pitch, thermally enhanced for high-speed analog operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VG | Gain Control Input | High-impedance (25 MΩ) analog voltage input (0–2 V) controlling gain linearly in dB |
| 2 - VIN | Inverting Input | Differential input node; accepts ±3.2 V input range with 7 MΩ impedance and 2.8 pF capacitance |
| 3 - RG | Gain Set Resistor Terminal | Connects external RG to define transconductance stage gain and input voltage range |
| 4 - GND | Analog Ground Reference | Reference for VG and bias point for single-supply virtual-ground operation |
| 5 - V+ | Positive Supply Rail | Accepts +3.5 V to +6 V; PSRR −76 dB (1 V change) |
| 6 - VOUT | Amplified Output | Current-feedback output capable of ±60 mA drive into 100 Ω with ±2.2 V swing |
| 7 - V− | Negative Supply Rail | Accepts −3.5 V to −6 V; PSRR −88 dB (1 V change) |
| 8 - X1 | Non-Inverting Input | Internally connected to input buffer output; used only in specialized configurations |
Key Features
| Feature | Design Value |
|---|---|
| Linear-in-dB Gain Control | Enables direct integration into analog AGC loops without digital log conversion or lookup tables |
| Resistor-Programmable AVMAX | External RF/RG ratio sets maximum gain (2–100 V/V), decoupling bandwidth and input range design |
| High-Speed Current Feedback Output | Delivers 150 MHz bandwidth and 1500 V/μs slew rate independent of closed-loop gain |
| Low Distortion at 20 MHz | THD = −45 dBc into 100 Ω ensures fidelity in composite video and broadband IF applications |
| Single-Supply Virtual-Ground Support | GND pin serves as reference for VG and input bias, simplifying level-shifting in 3.3 V/5 V systems |
Applications
| Video Imaging Processing | Automatic Gain Control (AGC) |
|---|---|
Use Scenario: Amplifying analog output from CMOS/CCD image sensors prior to ADC sampling in medical endoscopes and industrial inspection cameras. IC Role / Device Role / Timing Role: VGA front-end providing programmable gain compensation for varying scene illumination and sensor responsivity drift. Use Value: 80 dB dynamic range coverage and ±0.42 dB gain matching ensure consistent pixel intensity scaling across multi-sensor arrays. | Use Scenario: Closed-loop RF receiver IF stage where signal amplitude varies >60 dB due to fading or path loss. IC Role / Device Role / Timing Role: Core gain-control element in analog feedback loop, responding to detector output to maintain constant IF output level. Use Value: Linear-in-dB response enables stable loop convergence without phase compensation; 150 MHz gain control BW supports fast envelope tracking. |
| Voltage-Controlled Filter | Variable Attenuator |
Use Scenario: Tuning cutoff frequency of active RC filters in software-defined radio baseband paths using analog control voltage. IC Role / Device Role / Timing Role: Programmable gain block placed before fixed-filter stages to shift effective filter response dynamically. Use Value: 150 MHz signal BW and <2.1 ns rise time preserve filter group delay integrity up to UHF baseband frequencies. | Use Scenario: Precision RF test equipment requiring calibrated, stepless attenuation from 0 dB to −80 dB in 50 Ω systems. IC Role / Device Role / Timing Role: Wideband analog attenuator with DC coupling, replacing mechanical or PIN-diode solutions in automated test fixtures. Use Value: Feed-through rejection >−53 dB at 30 MHz and ±55 mV offset enable accurate low-level signal measurement without nulling calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar variable gain amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH6503MMX/NOPB | Linear-in-V/V gain control (not linear-in-dB); 100 MHz BW; lower power (70 mW) | Better suited for digitally controlled linear gain interpolation; less ideal for analog AGC | Select when gain must scale linearly with DAC output voltage, not logarithmically |
| AD8370ACPZ-R7 | 500 MHz BW; 5.5 V supply; integrated 10-bit SPI interface; higher noise (7.5 nV/√Hz) | Supports digital gain programming and on-chip register control; requires serial interface overhead | Select when system-level digital control and wider bandwidth outweigh analog simplicity |
Compared with LMH6504MMX/NOPB, LMH6503MMX/NOPB offers simpler linear gain mapping but lacks AGC-optimized linearity; AD8370ACPZ-R7 provides higher speed and digital configurability at the cost of increased complexity and noise-making LMH6504MMX/NOPB optimal for analog-centric, medium-bandwidth AGC and video gain staging.
Availability
LMH6504MMX/NOPB is available at Aetrix Electronics and suitable for video imaging processing, automatic gain control, and voltage-controlled filter applications requiring stable component supply, long-term production continuity, and guaranteed traceable sourcing.
Supply support for LMH6504MMX/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 LMH6504MMX/NOPB belongs to TI's high-speed analog amplifier portfolio, designed specifically for precision, wideband, voltage-controlled gain applications where DC coupling, low distortion, and analog programmability are critical.
FAQ
What is the maximum recommended supply voltage for LMH6504MMX/NOPB?
The absolute maximum supply voltage (V+ − V−) for LMH6504MMX/NOPB is 12.6 V, but the recommended operating range is ±3.5 V to ±6 V (7 V to 12 V total). Operation at ±6 V delivers full 150 MHz bandwidth and ±2.2 V output swing into 100 Ω. Exceeding ±6 V risks exceeding internal junction temperature limits and degrading long-term reliability. LMH6504MMX/NOPB performance is fully specified across this range.
Does LMH6504MMX/NOPB support single-supply operation?
Yes, LMH6504MMX/NOPB supports single-supply operation by biasing pin 4 (GND) to a "virtual half-supply" (e.g., 2.5 V for 5 V system), tying RG between pins 3 and that reference, and ensuring VG swings 0–2 V relative to that node. The input (pin 2) must remain within 1.8 V of the rails, and the output centers at the virtual ground. This configuration maintains full 80 dB gain range and 150 MHz bandwidth without performance penalty.
What is the gain accuracy specification for LMH6504MMX/NOPB across its control voltage range?
LMH6504MMX/NOPB gain accuracy is ±0.45 dB (typical) and ±3.9 dB (max) over 0.8 V ≤ VG ≤ 2.0 V at 25°C. At VG = 2.0 V, accuracy tightens to ±0.45 dB (typ) / ±0.42 dB (max). Accuracy degrades near VG = 0 V due to feed-through effects. For high-precision applications, calibration at two points (e.g., VG = 0.9 V and VG = 1.8 V) corrects residual nonlinearity in the linear-in-dB transfer function.
How does LMH6504MMX/NOPB achieve 1500 V/μs slew rate in inverting mode?
LMH6504MMX/NOPB achieves 1500 V/μs inverting slew rate because the input buffer remains at fixed DC potential during large-signal transitions, eliminating its slew limitation. In contrast, the non-inverting configuration subjects the input buffer to full signal swing, limiting overall slew to ~800 V/μs. To realize this benefit, configure LMH6504MMX/NOPB with signal applied through RG (pin 3), VIN (pin 2) grounded via 25 Ω, and proper RF selection per application notes.
Can LMH6504MMX/NOPB replace CLC5523 in existing designs?
Yes, LMH6504MMX/NOPB is explicitly designated as a replacement for CLC5523 per TI documentation. Both share identical 8-pin SOIC/VSSOP footprints, pinout, and core VGA functionality. LMH6504MMX/NOPB improves upon CLC5523 with higher bandwidth (150 MHz vs. 120 MHz), lower noise (4.4 nV/√Hz vs. 5.5 nV/√Hz), tighter gain matching (±0.42 dB vs. ±0.7 dB), and enhanced PSRR (−88 dB vs. −75 dB), making it a drop-in upgrade for legacy CLC5523-based video and IF circuits.
LMH6504MMX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMH®
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- Variable Gain
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 1500V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 150 MHz
- Current - Input Bias:
- 1.4 µA
- Voltage - Input Offset:
- -
- Current - Supply:
- 11mA
- Current - Output / Channel:
- 80 mA
- Voltage - Supply Span (Min):
- 7 V
- Voltage - Supply Span (Max):
- 12 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
LMH6504MMX/NOPB FAQ
1.How can I place an order for LMH6504MMX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMH6504MMX/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 LMH6504MMX/NOPB reliable?
The price and inventory of LMH6504MMX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMH6504MMX/NOPB is usually 5 days.
3.What payment methods are accepted for LMH6504MMX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMH6504MMX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMH6504MMX/NOPB?
LMH6504MMX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMH6504MMX/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 LMH6504MMX/NOPB?
For technical support, including LMH6504MMX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMH6504MMX/NOPB requirements.
6.How does Aetrix verify that LMH6504MMX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMH6504MMX/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 LMH6504MMX/NOPB meets industry standards.
7.What is the process for return or replacement of LMH6504MMX/NOPB?
All LMH6504MMX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMH6504MMX/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 LMH6504MMX/NOPB part is unused and in its original packaging.
Return procedure for LMH6504MMX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMH6504MMX/NOPB 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…
