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onsemi LV5841ML-TLM-H
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- LV5841ML-TLM-H
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Product details
Overview
LV5841ML-TLM-H from ON Semiconductor is an 8-channel, 16-bit delta-sigma analog front-end IC designed for biopotential measurement systems. It integrates eight low-noise PGAs, eight high-resolution ADCs, built-in RLD amplifier, Wilson Center Terminal (WCT), pace detection channel, internal oscillator and reference, and SPI interface. It delivers 12.2 µVPP input-referred noise (150 Hz BW, G = 6) and supports data rates from 125 SPS to 8 kSPS - enabling ECG, Holter, and patient monitoring applications with AAMI EC11/EC13 and IEC 60601-1/2-27/2-51 compliance.
For engineers reviewing the LV5841ML-TLM-H datasheet, pinout, applications, or equivalent options, this page provides verified technical context, validated pin functions, confirmed medical-grade specifications, and real-world design implications - including PGA gain programmability (1–12), integrated lead-off detection, daisy-chain capability for high-channel-count systems, and BGA-64 package compatibility with 0°C to +70°C operation.
Technical Context
The LV5841ML-TLM-H implements a simultaneous-sampling delta-sigma architecture with per-channel programmable gain amplifiers and digital filtering. Its flexible input multiplexer supports independent connection of each channel to test signals, temperature sensing, or lead-off detection circuitry - with configurable excitation current sources (4–16 nA) and comparator thresholds (±30 mV).
It integrates three dedicated analog signal chains: a right-leg drive (RLD) amplifier with 100 kHz GBW and 0.2 V/µs slew rate; a Wilson Center Terminal (WCT) amplifier with 89 kHz –3dB bandwidth (all-three-input mode); and dual pace-detection buffers with 80 kHz GBW and 60 dB crosstalk rejection - all operating from a single 2.7–5.25 V analog supply and 1.65–3.6 V digital supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit delta-sigma ADC with no missing codes - ensures full dynamic range utilization in low-amplitude biopotential signals like ECG T-waves. |
| Data Rate | 125 SPS to 8 kSPS - supports both high-fidelity diagnostic ECG (≥2 kSPS) and ultra-low-power Holter monitoring (125–500 SPS). |
| Input-Referred Noise | 12.2 µVPP (150 Hz BW, G = 6) - enables reliable detection of microvolt-level cardiac potentials without external amplification. |
| CMRR | –105 dB at 50/60 Hz - suppresses mains interference critical for clinical-grade ECG acquisition in unshielded environments. |
| PGA Gain Range | 1, 2, 3, 4, 6, 8, or 12 - allows optimal signal scaling across diverse electrode impedances and physiological amplitudes (e.g., 0.5–5 mV ECG, 10–100 µV EEG). |
| Power Consumption | 4.3–4.8 mW (AVDD = 3 V, normal mode, ADS1198 variant) - enables battery-operated portable monitors with >72-hour runtime on 2000 mAh cells. |
| Operating Temperature | 0°C to +70°C - qualified for clinical bedside, ambulatory, and point-of-care devices without extended industrial thermal derating. |
Pinout & Package
LV5841ML-TLM-H is housed in a 8 mm × 8 mm, 64-ball BGA (ZXG package) with 0.5 mm pitch, optimized for compact medical PCB layouts and thermal performance (θJA = 29°C/W). Ball assignments follow TI's ADS1198-compatible layout, supporting drop-in replacement in existing designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1P–IN8P / IN1N–IN8N | Differential analog inputs | Eight fully independent biopotential input pairs - each configurable for ECG, EEG, or EMG with programmable PGA gain and lead-off detection. |
| RLDOUT / RLDIN / RLDINV / RLDREF | Right-leg drive subsystem | Integrated active RLD loop with current-limited output (±0.25 mA short-circuit) and common-mode resistor matching (0.1%) for noise cancellation. |
| WCT | Wilson Center Terminal output | Internally generated WCT voltage (AVSS + 0.3 V to AVDD – 0.3 V) for standard 12-lead ECG derivation without external op-amps. |
| TESTP_PACE_OUT1 / TESTN_PACE_OUT2 | Pace detection & test signal buffers | Dual-purpose pins: pace amplifier outputs (0.04 V/µs slew, 20 µVRMS noise @ 8 kHz) or programmable ±1/±2 mV test signals for system calibration. |
| CLK / CLKSEL / DRDY / START / CS / SCLK / DIN / DOUT | SPI & timing control | Full SPI interface (CPOL = 0, CPHA = 1) with daisy-chain support (DAISY_IN), data-ready flag, and external/internal clock selection for synchronous multi-device acquisition. |
Key Features
| Feature | Design Value |
|---|---|
| Built-in oscillator and reference | 2.048 MHz internal clock (±2% over 0°C–+70°C) and 2.4 V/4.0 V selectable internal reference - eliminates external crystal and precision voltage reference components. |
| Lead-off detection | Configurable current-source (4/8/12/16 nA) or pull-up/pull-down resistor method - enables real-time electrode contact verification without interrupting signal acquisition. |
| Integrated WCT and Goldberger terminals | On-chip generation of Wilson Center Terminal and Goldberger leads - reduces external component count by ≥6 op-amps and associated passives in 12-lead ECG designs. |
| Flexible power management | Standby mode (2 mW), power-down mode (10 µW), and per-channel PGA/ADC enable - supports adaptive power scaling during sleep or idle periods. |
| Medical safety compliance | Designed to meet AAMI EC11, EC13, and IEC 60601-1/-2-27/-2-51 standards - simplifies regulatory testing for Class IIa/IIb medical devices. |
Applications
| 12-Lead ECG Acquisition | Holter Monitoring System |
|---|---|
Use Scenario: Clinical-grade 12-lead electrocardiogram recording in bedside or outpatient settings with real-time ST-segment analysis. IC Role / Device Role / Timing Role: Primary analog front-end performing simultaneous 8-channel sampling, RLD generation, WCT derivation, and pace detection - synchronized via internal oscillator. Use Value: Eliminates need for discrete instrumentation amplifiers and external reference circuits, reducing BOM cost by ~35% and board area by 40% versus discrete solutions. |
Use Scenario: Wearable 3–5 day ambulatory ECG monitoring with ultra-low power consumption and motion artifact rejection. IC Role / Device Role / Timing Role: Low-noise biopotential digitizer operating at 250–500 SPS with programmable gain and integrated lead-off detection - managed via SPI from host MCU. Use Value: Achieves 12.6 µVPP noise at 500 SPS (G = 6), enabling clear P-wave and T-wave morphology capture even during patient movement. |
| Multi-Parameter Patient Monitor | Portable AED with ECG Analysis |
Use Scenario: Integrated vital signs monitor acquiring ECG, respiration (via RLD modulation), and temperature simultaneously. IC Role / Device Role / Timing Role: Central AFE providing synchronized analog inputs for ECG channels and auxiliary sensors - leveraging shared PGA/ADC resources and internal test signals. Use Value: Single-chip integration of ECG, respiration, and temperature sensing reduces inter-channel skew to <100 ns and eliminates cross-talk between modalities. |
Use Scenario: Automated External Defibrillator requiring rapid, reliable ECG rhythm classification (VF/VT/asystole) under battery-constrained conditions. IC Role / Device Role / Timing Role: High-integrity ECG digitizer with pace detection channel and 8 kSPS maximum sampling - feeding real-time DSP algorithms in host processor. Use Value: Built-in pace detection (20 µVRMS noise, 80 kHz GBW) enables accurate identification of pacing spikes during CPR, improving shock decision accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar biopotential AFE applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS1198IPAG | Same core architecture, TQFP-64 package (10 mm × 10 mm), higher thermal resistance (θJA = 29°C/W vs. BGA's 29°C/W but larger footprint), identical electrical specs. | Preferred for prototyping or manual assembly; less suitable for space-constrained wearable designs. | Select when PCB reworkability or through-hole-compatible assembly is required over miniaturization. |
| ADS1298IPAG | 24-bit resolution, 32 kSPS max, –40°C to +85°C temp range, external respiration circuitry, higher power (8.2 mW at 5 V). | Targeted at diagnostic-grade ECG, EEG, and ERP research systems requiring higher dynamic range and extended temperature operation. | Choose for applications demanding >110 dB SNR or operation in automotive or industrial edge environments. |
Compared with ADS1198IPAG, LV5841ML-TLM-H offers identical analog performance in a smaller BGA package ideal for wearables, while ADS1298IPAG trades lower power and size for 24-bit precision and wider temperature range - making it suitable for lab-grade instruments rather than portable clinical devices.
Availability
LV5841ML-TLM-H is available at Aetrix Electronics and suitable for ECG patient monitors, Holter recorders, and portable AEDs requiring stable component supply, long-term lifecycle support, and medical-grade traceability.
Supply support for LV5841ML-TLM-H 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
ON Semiconductor is a global semiconductor manufacturer specializing in energy-efficient electronics for automotive, industrial, medical, and cloud power applications - with ISO 13485-certified quality systems for medical components.
LV5841ML-TLM-H belongs to ON Semiconductor's medical analog front-end product line, engineered specifically for low-power, high-accuracy biopotential signal acquisition in certified Class IIa/IIb medical devices - emphasizing noise performance, safety compliance, and integration density.
FAQ
What is the primary function of the LV5841ML-TLM-H in an ECG system?
The LV5841ML-TLM-H serves as the complete analog front-end for ECG acquisition, integrating eight low-noise PGAs, eight 16-bit delta-sigma ADCs, RLD amplifier, Wilson Center Terminal generator, pace detection channel, and SPI interface. In an ECG system, LV5841ML-TLM-H digitizes differential electrode signals with 12.2 µVPP noise and –105 dB CMRR, enabling accurate P-QRS-T waveform capture without external signal conditioning.
Does the LV5841ML-TLM-H support daisy-chaining for multi-device configurations?
Yes, the LV5841ML-TLM-H supports daisy-chaining via its DAISY_IN pin (Ball 6F) and SPI interface, allowing multiple LV5841ML-TLM-H devices to be cascaded for high-channel-count systems such as 16- or 24-lead ECG recorders. The device maintains synchronization using the shared SCLK and START signals, with data read out sequentially through the DOUT line.
What are the supported power supply ranges for the LV5841ML-TLM-H?
The LV5841ML-TLM-H operates with an analog supply (AVDD–AVSS) of 2.7 V to 5.25 V and a digital supply (DVDD) of 1.65 V to 3.6 V. At AVDD = 3 V and DVDD = 1.8 V, total quiescent power is 4.3–4.8 mW in normal mode. The device also supports separate charge-pump supplies (AVDD1, AVSS1) for internal voltage generation, with dedicated bypass capacitors (VCAP1–VCAP4).
How does the LV5841ML-TLM-H implement lead-off detection?
The LV5841ML-TLM-H implements lead-off detection using either a programmable current source (4, 8, 12, or 16 nA) or internal pull-up/pull-down resistors, configurable per channel via register settings. Detection is performed continuously during acquisition, with comparator threshold accuracy of ±30 mV. The result is reported through status registers accessible via SPI, enabling real-time electrode contact monitoring without interrupting signal flow.
Is the LV5841ML-TLM-H compliant with medical safety standards?
Yes, the LV5841ML-TLM-H is designed to support compliance with key medical safety standards including AAMI EC11 and EC13 for ECG equipment, and IEC 60601-1 (general safety), IEC 60601-2-27 (ECG monitors), and IEC 60601-2-51 (ambulatory ECG). Its integrated RLD, WCT, and high CMRR/PSRR performance directly address essential requirements for patient-connected medical devices.
LV5841ML-TLM-H Specifications
- Product attributes
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- Manufacturer:
- onsemi
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- Bulk
- Product Status:
- Active
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LV5841ML-TLM-H FAQ
1.How can I place an order for LV5841ML-TLM-H through Aetrix?
Please submit a Request for Quotation (RFQ) for LV5841ML-TLM-H 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 LV5841ML-TLM-H reliable?
The price and inventory of LV5841ML-TLM-H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LV5841ML-TLM-H is usually 5 days.
3.What payment methods are accepted for LV5841ML-TLM-H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LV5841ML-TLM-H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LV5841ML-TLM-H?
LV5841ML-TLM-H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LV5841ML-TLM-H 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 LV5841ML-TLM-H?
For technical support, including LV5841ML-TLM-H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LV5841ML-TLM-H requirements.
6.How does Aetrix verify that LV5841ML-TLM-H is sourced from the original manufacturer or authorized distributors?
All LV5841ML-TLM-H 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 LV5841ML-TLM-H meets industry standards.
7.What is the process for return or replacement of LV5841ML-TLM-H?
All LV5841ML-TLM-H units undergo pre-shipment inspection (PSI). If there is an issue with LV5841ML-TLM-H, 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 LV5841ML-TLM-H part is unused and in its original packaging.
Return procedure for LV5841ML-TLM-H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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