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Analog Devices Inc. LTC2992IDE#PBF
- Part No.:
- LTC2992IDE#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Power Supply Controllers, Monitors
- Package:
- 16-WFDFN Exposed Pad
- Datasheet:
-
LTC2992IDE#PBF.pdf
- Description:
- IC PWR MONITOR DUAL WIDE 16DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,467
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Product details
Overview
LTC2992IDE#PBF from Analog Devices is a dual wide-range rail-to-rail system monitor IC that measures current, voltage, and power of two independent supplies (0V–100V common-mode), with 12-bit ADCs delivering ±0.4% total unadjusted error on voltage/current sensing and integrated digital power calculation. It operates from 2.7V to 100V supply, includes internal shunt regulation for >100V systems, and supports opto-isolated I²C via split SDAI/SDAO pins - used in telecom power shelves and industrial 48V DC distribution units.
For engineers reviewing the LTC2992IDE#PBF datasheet, LTC2992IDE#PBF pinout, LTC2992IDE#PBF application, or LTC2992IDE#PBF equivalent, key selection criteria include its dual 0–100V input range, simultaneous 12-bit current/voltage/power measurement per channel, programmable alert thresholds, minimum/maximum value storage, and support for continuous scan or snapshot conversion modes without host polling.
Technical Context
The LTC2992IDE#PBF integrates three delta-sigma ADCs: two dedicated 12-bit IADCs measuring differential sense voltages (±51.2mV FS, ±0.4% TUE) and one 12-bit VADC measuring six inputs (SENSE1+/2+, GPIO1–4) with full-scale ranges up to 102.4V. Its internal architecture digitally multiplies synchronized current and voltage samples to compute real-time power (P = V × I) and total system consumption (ITOTAL, PTOTAL).
It features flexible power architecture: VDD powers an internal LDO (5V @ INTVCC, 10mA max) when ≥8V, or accepts external 2.7–5.8V at INTVCC; for >100V rails, INTVCC functions as a 6.2V shunt regulator. The I²C interface uses separate SDAI (input) and SDAO (non-inverted output) pins, enabling direct opto-isolation without external logic inversion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Voltage Input Range | 0V to 100V common-mode per channel - enables direct high-side monitoring of 48V/54V telecom or 12–96V industrial rails without level-shifting. |
| Current Sensing Accuracy | ±0.4% total unadjusted error (12-bit mode) - ensures <±2mA error at 5A full-scale with 10mΩ shunt, critical for precise battery or PSU efficiency reporting. |
| ADC Resolution | Configurable 8-/12-bit - 12-bit delivers 12.5µV LSB on ∆SENSE for sub-mA resolution; 8-bit reduces conversion time to 4.1ms for fast fault response. |
| Power Calculation | Digital multiplication of synchronized V/I samples - computes real-time P1, P2, PTOTAL in hardware, eliminating µP overhead and timing skew errors. |
| Supply Range | 2.7V to 100V on VDD - supports operation directly from monitored rail (e.g., 48V backplane) or auxiliary 3.3V/5V supply, simplifying BOM. |
| Alert & Storage | Programmable overrange thresholds + min/max registers per ADC - enables autonomous fault detection (e.g., overcurrent) and historical trend analysis without continuous polling. |
| I²C Interface | Split SDAI/SDAO pins - allows direct connection to opto-isolators (e.g., Si87xx) without external inverters, meeting reinforced isolation requirements in EV chargers. |
Pinout & Package
Package: 16-lead (4mm × 3mm) plastic DFN with optional exposed pad (Pin 17) for thermal management. Operating temperature range: –40°C to +85°C (I-grade).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SENSE1+, SENSE2+ | High-side voltage & current sense input | Accepts 0–100V common-mode; connects to supply rail for voltage measurement and to shunt resistor top for current sensing. |
| SENSE1–, SENSE2– | Current sense differential input | Measures voltage drop across external shunt (e.g., 10mΩ); full-scale ΔV = 51.2mV → 5A full-scale with 10mΩ. |
| VDD | Main high-voltage supply input | Powers internal LDO (INTVCC = 5V) when ≥8V; supports direct connection to monitored 12–100V rail. |
| INTVCC | Internal low-voltage supply I/O | Configurable as 5V LDO output (10mA), external 2.7–5.8V input, or 6.2V shunt regulator for >100V systems. |
| SDAI, SDAO | I²C data input/output (separate) | Enables opto-isolated I²C: SDAI driven by master, SDAO drives isolated slave side - no level shifters needed. |
| SCL | I²C clock input | Open-drain input with 6.3V clamp; compatible with 3.3V/5V masters and isolated clock drivers. |
| GPIO1–GPIO4 | Configurable I/O (open-drain) | Each can be ADC input (2.048V FS), logic input, or open-drain output; GPIO3 = DATAREADY, GPIO4 = ALERT. |
| ADR0, ADR1 | I²C address configuration | Set device address (one of nine options) by tying to GND, INTVCC, or leaving floating - enables multi-drop bus without jumpers. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 0–100V monitoring | Eliminates need for external level-shifters or op-amp front-ends when measuring high-voltage rails like 48V telecom or 72V industrial buses. |
| Hardware power calculation (P = V × I) | Reduces host µP load and eliminates software timing errors in power reporting; outputs P1, P2, and PTOTAL directly via I²C registers. |
| Programmable min/max storage & alerts | Autonomously logs peak/valley values and triggers GPIO4 (ALERT) on threshold violation - enables predictive maintenance without polling. |
| Split I²C SDAI/SDAO pins | Supports direct opto-isolation with standard photocouplers (e.g., PC817, Si87xx), meeting reinforced isolation standards for EV charging and medical equipment. |
| Flexible power architecture | Operates from same rail being monitored (e.g., 48V), external 3.3V, or >100V via shunt regulation - maximizes design reuse across voltage classes. |
Applications
| Telecom Power Shelf Monitoring | Industrial 48V DC Distribution |
|---|---|
|
Use Scenario: Real-time monitoring of dual -48V rectifier outputs and backup battery feeds in central office power systems. IC Role / Device Role / Timing Role: Measures voltage, current, and power per rail simultaneously; stores min/max for trend analysis; asserts ALERT on overcurrent during surge events. Use Value: Enables automatic load shedding and predictive failure detection using hardware-calculated PTOTAL and autonomous alerting - reducing manual inspection cycles by 70%. |
Use Scenario: Power telemetry in factory automation PLCs with dual 24V/48V I/O modules and safety-critical actuators. IC Role / Device Role / Timing Role: High-side current sensing on each rail with 12-bit accuracy; GPIO4 provides immediate hardware interrupt on overtemperature-induced overcurrent. Use Value: Achieves <±0.5% power accuracy without calibration drift over –40°C to +85°C, meeting IEC 61000-4-30 Class A requirements for energy metering. |
| Automotive EV Charging Station | Server Rack Power Management |
|
Use Scenario: Isolated monitoring of AC/DC converter output and DC-link capacitor health in 3-phase EVSE units. IC Role / Device Role / Timing Role: SDAI/SDAO pins connect directly to Si87xx isolators; measures V/I on 400V DC bus and 12V control rail with synchronized sampling. Use Value: Meets UL 62368-1 reinforced isolation requirements while delivering real-time power data to safety controller - eliminating external isolation components. |
Use Scenario: Per-server node power telemetry in hyperscale data centers using 12V/54V intermediate bus architecture. IC Role / Device Role / Timing Role: Monitors primary 12V rail and secondary 54V GPU rail; calculates PTOTAL for dynamic power capping via PMBus-compatible I²C interface. Use Value: Provides hardware-accelerated power summation with <100ms latency, enabling real-time thermal throttling and workload balancing across 1000+ nodes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-rail power monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA226AIDGST | Single-channel, 0–36V max common-mode; 16-bit ADC but no hardware power calculation; requires external µP for P = V × I. | Limited to lower-voltage systems (≤36V); lacks dual-rail synchronization and min/max storage - unsuitable for 48V+ telecom or EVSE. | Select only for cost-sensitive ≤36V applications where µP resources exist for power math and historical logging. |
| MAX34451ETL+ | Dual-channel, 0–60V common-mode; 12-bit ADCs with ±0.5% TUE; includes hardware power math but no shunt regulator for >100V rails. | Cannot operate directly from >60V rails; lacks split SDAI/SDAO for native opto-isolation - requires external level shifters in isolated designs. | Prefer for 12–60V industrial systems needing SMBus compatibility and integrated EEPROM, but not for >60V or reinforced isolation use cases. |
Compared with INA226AIDGST and MAX34451ETL+, the LTC2992IDE#PBF uniquely combines 0–100V dual-rail monitoring, hardware power calculation, shunt regulation for >100V, and native opto-isolation support - making it the only single-chip solution for telecom shelf, EVSE, and high-voltage industrial power telemetry.
Availability
LTC2992IDE#PBF is available at Aetrix Electronics and suitable for telecom infrastructure, industrial 48V DC distribution, and automotive EV charging station designs requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for LTC2992IDE#PBF 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
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, industrial automation, communications, and automotive markets.
The LTC2992IDE#PBF belongs to Analog Devices' precision power monitoring product line, designed specifically for high-voltage, dual-rail telemetry in telecom, industrial, and EV infrastructure where accuracy, autonomy, and isolation robustness are critical.
FAQ
What is the maximum common-mode voltage the LTC2992IDE#PBF can measure on each channel?
The LTC2992IDE#PBF supports a rail-to-rail input common-mode voltage range of 0V to 100V per channel (SENSE1+, SENSE2+). This allows direct high-side monitoring of telecom –48V systems (with appropriate biasing), 48V/54V data center rails, and industrial 24–96V buses without external level-shifting circuitry. The specification is validated across the full –40°C to +85°C operating temperature range.
Does the LTC2992IDE#PBF perform hardware-based power calculation, and how is it implemented?
Yes, the LTC2992IDE#PBF performs real-time hardware power calculation (P = V × I) using synchronized digital multiplication of voltage and current ADC samples. It outputs individual channel power (P1, P2), total current (ITOTAL), and total power (PTOTAL) directly via I²C registers - eliminating µP computation overhead and timing skew errors inherent in software-based solutions.
How does the LTC2992IDE#PBF support opto-isolated I²C communication?
The LTC2992IDE#PBF features physically separate SDAI (data input) and SDAO (data output) pins, enabling direct connection to opto-isolators (e.g., Si87xx, PC817) without external inverters or level shifters. SDAI receives commands from the isolated master; SDAO transmits responses - satisfying reinforced isolation requirements in EV chargers and medical equipment per IEC 62368-1.
What is the accuracy of current measurement on the LTC2992IDE#PBF, and what shunt resistor value achieves 5A full-scale?
The LTC2992IDE#PBF achieves ±0.4% total unadjusted error (TUE) on current measurement in 12-bit mode. With a full-scale differential sense voltage of 51.2mV, a 10mΩ shunt resistor yields 5A full-scale (51.2mV / 10mΩ = 5.12A). The device's internal 40× gain stage and delta-sigma architecture ensure stable accuracy across temperature and supply variations.
Can the LTC2992IDE#PBF operate from the same 48V rail it is monitoring, and what is required for stable operation?
Yes, the LTC2992IDE#PBF can operate directly from the 48V rail it monitors via the VDD pin. When VDD ≥ 8V, the internal LDO regulates 5V at INTVCC (capable of supplying 10mA). For stable operation, a 0.1µF bypass capacitor must be placed between INTVCC and GND; if external loads exceed 1mA, a 1µF capacitor is recommended for loop stability per the datasheet guidelines.
LTC2992IDE#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-WFDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Applications:
- Telecommunications
- Voltage - Input:
- 0V ~ 100V
- Voltage - Supply:
- 3V ~ 100V
- Current - Supply:
- 1.6 mA
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-DFN (4x3)
LTC2992IDE#PBF FAQ
1.How can I place an order for LTC2992IDE#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2992IDE#PBF 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 LTC2992IDE#PBF reliable?
The price and inventory of LTC2992IDE#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2992IDE#PBF is usually 5 days.
3.What payment methods are accepted for LTC2992IDE#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2992IDE#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2992IDE#PBF?
LTC2992IDE#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2992IDE#PBF 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 LTC2992IDE#PBF?
For technical support, including LTC2992IDE#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2992IDE#PBF requirements.
6.How does Aetrix verify that LTC2992IDE#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2992IDE#PBF 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 LTC2992IDE#PBF meets industry standards.
7.What is the process for return or replacement of LTC2992IDE#PBF?
All LTC2992IDE#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2992IDE#PBF, 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 LTC2992IDE#PBF part is unused and in its original packaging.
Return procedure for LTC2992IDE#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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