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Analog Devices Inc. LTC2992IDE#TRPBF
- Part No.:
- LTC2992IDE#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Power Supply Controllers, Monitors
- Package:
- 16-WFDFN Exposed Pad
- Datasheet:
-
LTC2992IDE#TRPBF.pdf
- Description:
- IC PWR MONITOR DUAL WIDE 16DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,212
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Product details
Overview
LTC2992IDE#TRPBF from Analog Devices is a dual wide-range rail-to-rail power monitor IC that measures current, voltage, and power of two independent supplies (0V–100V common-mode), featuring simultaneous 8-/12-bit ADCs, internal shunt regulator for >100V operation, and I²C interface with split SDAI/SDAO pins for opto-isolation support. It delivers ±0.3% total unadjusted error in 12-bit mode and stores min/max values for system-level power consumption tracking in telecom infrastructure and industrial equipment.
For engineers reviewing the LTC2992IDE#TRPBF datasheet, LTC2992IDE#TRPBF pinout, LTC2992IDE#TRPBF application, or LTC2992IDE#TRPBF equivalent, key selection criteria include its 0V–100V input range per channel, dual 51.2mV full-scale differential current sensing, 102.4V single-ended voltage measurement capability, programmable alert thresholds, and −40°C to +85°C operating temperature grade.
Technical Context
The LTC2992IDE#TRPBF integrates three delta-sigma ADCs: two dedicated to current sense (ΔSENSE) with 51.2mV full-scale and one for voltage monitoring (102.4V on SENSE+, 2.048V on GPIOs). 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 supports flexible power supply configurations - direct VDD operation from 3V–100V, INTVCC as 5V LDO output (up to 10mA), or shunt-regulated 6.2V reference - and includes programmable continuous scan or snapshot conversion modes, offset calibration control, and SMBus ALERT/ DATAREADY signaling via GPIO3/GPIO4.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | VDD = 3V to 100V; INTVCC = 2.7V to 5.8V - enables direct high-voltage rail monitoring without external regulators. |
| Input Common-Mode Range | 0V to 100V on SENSE1+/SENSE2+ - supports high-side and low-side current sensing across full supply range. |
| Current Sense Full-Scale | 51.2mV differential (ΔSENSE) - compatible with standard 10mΩ shunts for up to ±5.12A full-scale measurement. |
| ADC Resolution & Error | 8-/12-bit selectable; ±0.3% TUE in 12-bit mode - ensures accurate power calculation with minimal software correction. |
| I²C Interface | Standard mode (400kHz max); split SDAI/SDAO pins - simplifies opto-isolated bus implementation without level shifters. |
| Operating Temperature | −40°C to +85°C (I-grade) - qualified for industrial and automotive under-hood environments. |
| Shutdown Current | 25µA typical - reduces system standby power in always-on monitoring applications. |
Pinout & Package
Package: 16-lead (4mm × 3mm) plastic DFN with exposed pad (optional GND connection). Thermal resistance θJA = 43°C/W, θJC = 5.5°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SENSE1+, SENSE2+ | High-side voltage & current sense inputs | Accept 0V–100V common-mode; used for supply voltage measurement and current sense amplifier non-inverting input. |
| SENSE1−, SENSE2− | Current sense differential inputs | Measure voltage drop across external shunt resistor; full-scale ΔV = 51.2mV for precise current derivation. |
| VDD | Main high-voltage supply input | Powers internal LDO (INTVCC = 5V) when ≥8V; supports direct connection to 3V–100V rails. |
| INTVCC | Internal low-voltage supply I/O | Configurable as 5V LDO output (10mA), external 2.7V–5.8V input, or 6.2V shunt regulator for >100V systems. |
| SDAI / SDAO | I²C data input / open-drain output | Split pins enable galvanic isolation; tie together for standard I²C; SDAO inverted in -1 variant only. |
| SCL | I²C clock input | Open-collector input with internal 6.3V clamp; requires external pull-up to VDD or INTVCC. |
| GPIO1–GPIO4 | Configurable I/O terminals | Support ADC inputs, logic outputs, DATAREADY (GPIO3), or SMBus ALERT (GPIO4); all open-drain. |
| ADR0, ADR1 | I²C address configuration inputs | Set one of nine device addresses by tying to GND, INTVCC, or leaving floating. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent power monitoring | Simultaneous measurement of current, voltage, and power on two supplies - eliminates need for two discrete monitors. |
| Rail-to-rail 0V–100V input range | Enables direct high-side sensing in 48V telecom, 24V industrial, and 12V automotive systems without attenuators. |
| On-chip power computation | Digital multiplication of synchronized V/I samples yields real-time P1, P2, PTOTAL - reduces host MCU processing load. |
| Min/max value storage | Hardware-accelerated tracking of extreme values per channel - enables autonomous overcurrent/overvoltage event logging. |
| Programmable alert thresholds | Configurable high/low limits per ADC channel trigger SMBus ALERT (GPIO4) - minimizes polling and host interrupt overhead. |
| Flexible conversion modes | Continuous scan (10Hz/channel default) or snapshot (on-demand) - balances update rate, power, and timing determinism. |
Applications
| Telecom Power Shelf Monitoring | Industrial PLC Power Management |
|---|---|
|
Use Scenario: Real-time monitoring of redundant 48V DC distribution rails in carrier-grade power shelves. IC Role / Device Role / Timing Role: Dual-channel current/voltage/power monitor with hardware min/max capture and alert generation. Use Value: Detects gradual degradation or sudden failure of individual rectifiers or DC-DC modules before system-level brownout occurs. |
Use Scenario: Supervision of 24V fieldbus and 5V logic supply rails in programmable logic controllers. IC Role / Device Role / Timing Role: High-accuracy rail monitor with −40°C to +85°C operation and I²C reporting. Use Value: Enables predictive maintenance by correlating load current drift with ambient temperature and runtime. |
| Automotive ADAS Domain Controller | Data Center Server PSU Telemetry |
|
Use Scenario: In-vehicle monitoring of 12V battery-fed ADAS ECU power rails and auxiliary 5V supplies. IC Role / Device Role / Timing Role: Dual-supply monitor with high-side current sensing and fault-alert signaling. Use Value: Provides early warning of parasitic drain or short-circuit conditions during vehicle sleep mode via low-power shutdown (<25µA). |
Use Scenario: Embedded telemetry in 12V/54V server power supplies for PMBus-compatible reporting. IC Role / Device Role / Timing Role: Precision power monitor interfacing directly to host microcontroller via isolated I²C. Use Value: Delivers calibrated voltage, current, and power data at 12-bit resolution without external ADC or multiplier ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply power monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA226AIDGST | Single-channel, 0–36V max common-mode; no integrated shunt regulator; lower voltage range and no >100V support. | Best suited for low-voltage DC-DC output monitoring (e.g., 3.3V/5V/12V rails), not high-side 48V/100V systems. | Select when monitoring ≤36V supplies where cost and footprint are prioritized over extended range and dual-channel integration. |
| MAX34451ETL+ | 12-channel, 0–28V common-mode; higher channel count but limited voltage range; no internal power computation engine. | Designed for multi-rail board-level monitoring (e.g., FPGA or ASIC power domains), not high-voltage subsystem supervision. | Choose for dense, low-voltage multi-rail systems requiring granular per-rail telemetry, not dual high-voltage rail analysis. |
Compared with INA226AIDGST and MAX34451ETL+, the LTC2992IDE#TRPBF uniquely combines 0–100V dual-channel sensing, on-chip power calculation, shunt regulator support for >100V, and −40°C to +85°C operation - making it the only option for robust, self-contained high-voltage power telemetry in industrial and telecom infrastructure.
Availability
LTC2992IDE#TRPBF is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLCs, and automotive ADAS domain controllers requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for LTC2992IDE#TRPBF 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 LTC2992 product line delivers highly integrated, wide-range power monitoring solutions targeting high-reliability applications where accuracy, voltage range, and autonomous fault detection are critical - especially in telecom, industrial, and automotive power systems.
FAQ
What is the maximum common-mode voltage the LTC2992IDE#TRPBF can measure on SENSE1+ and SENSE2+?
The LTC2992IDE#TRPBF supports a rail-to-rail input common-mode range of 0V to 100V on both SENSE1+ and SENSE2+. This allows direct high-side current sensing on 48V telecom, 24V industrial, and 12V automotive rails without external attenuators or level-shifting circuitry. The specification is guaranteed across the full −40°C to +85°C operating temperature range.
Does the LTC2992IDE#TRPBF require external components to operate from a 100V supply?
No, the LTC2992IDE#TRPBF does not require external components to operate from a 100V supply. Its VDD pin accepts 3V–100V directly, and the internal series regulator produces a stable 5V at INTVCC. For supplies above 100V, the INTVCC pin can be configured as a 6.2V shunt regulator using an external current-limiting resistor - no additional ICs or regulators are needed.
How does the LTC2992IDE#TRPBF compute power, and is external calculation required?
The LTC2992IDE#TRPBF computes power internally using synchronized 12-bit voltage and current samples: P₁ = VSENSE1+ × ΔSENSE₁ and P₂ = VSENSE2+ × ΔSENSE₂. It also calculates total current (I₁ + I₂) and total power (P₁ + P₂) in hardware. No external µP calculation is required for basic power telemetry, though physical unit conversion (e.g., amps/watts) may need scaling based on shunt and gain settings.
Can the LTC2992IDE#TRPBF monitor negative supply voltages?
The LTC2992IDE#TRPBF cannot directly measure negative voltages on SENSE1+/SENSE2+, as its common-mode range is 0V–100V. However, negative supply voltages can be monitored indirectly by connecting them to GPIO1–GPIO4 through external resistive dividers - these pins accept 0–2.048V inputs, enabling scaled measurement of negative rails when referenced to local ground with appropriate biasing networks.
What is the function of the split SDAI and SDAO pins on the LTC2992IDE#TRPBF?
The LTC2992IDE#TRPBF features separate SDAI (data input) and SDAO (data output) pins to simplify opto-isolated I²C implementations. SDAI receives commands from the master; SDAO transmits responses - eliminating bidirectional signal contention across isolation barriers. For standard (non-isolated) I²C, SDAI and SDAO are tied together externally, matching conventional SDA behavior.
LTC2992IDE#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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#TRPBF FAQ
1.How can I place an order for LTC2992IDE#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2992IDE#TRPBF 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#TRPBF reliable?
The price and inventory of LTC2992IDE#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2992IDE#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2992IDE#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2992IDE#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2992IDE#TRPBF?
LTC2992IDE#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2992IDE#TRPBF 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#TRPBF?
For technical support, including LTC2992IDE#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2992IDE#TRPBF requirements.
6.How does Aetrix verify that LTC2992IDE#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2992IDE#TRPBF 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#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2992IDE#TRPBF?
All LTC2992IDE#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2992IDE#TRPBF, 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#TRPBF part is unused and in its original packaging.
Return procedure for LTC2992IDE#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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