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Analog Devices Inc. LTC2992CDE#PBF
- Part No.:
- LTC2992CDE#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Power Supply Controllers, Monitors
- Package:
- 16-WFDFN Exposed Pad
- Datasheet:
-
LTC2992CDE#PBF.pdf
- Description:
- IC PWR MONITOR DUAL WIDE 16DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,968
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Product details
Overview
LTC2992CDE#PBF 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), with 8-/12-bit ADCs, ±0.3% total unadjusted error (12-bit mode), and I²C interface. It operates from 2.7V to 100V supply, integrates shunt regulation for >100V systems, and stores min/max values - used in telecom power shelves and industrial 48V DC distribution.
For engineers reviewing the LTC2992CDE#PBF datasheet, LTC2992CDE#PBF pinout, LTC2992CDE#PBF application, or LTC2992CDE#PBF equivalent, key selection factors include its dual-supply monitoring capability, programmable alert thresholds, split SDAI/SDAO pins for opto-isolated I²C, 16-lead DFN package, and support for high-side current sensing with 51.2mV full-scale differential input.
Technical Context
The LTC2992CDE#PBF implements three delta-sigma ADCs: two dedicated to current sense (ΔSENSE, 51.2mV FS, ±0.3% TUE at 12-bit), one for voltage inputs (SENSE1+/SENSE2+ at 102.4V FS, GPIOs at 2.048V FS). It performs real-time digital multiplication to compute instantaneous power (P = V × I) and accumulates total system consumption.
Its flexible power architecture supports three configurations: direct INTVCC supply (2.7V–5.8V), internal LDO from VDD (8V–100V, 5V output), or external shunt regulation (6.2V clamp). The device features programmable continuous scan or snapshot conversion modes, DATAREADY and ALERT outputs on GPIO3/GPIO4, and nine I²C addresses via ADR0/ADR1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | VDD = 2.7V to 100V; enables direct monitoring of 12V, 24V, 48V, and 96V systems without external regulators |
| Input Common-Mode Range | 0V to 100V on SENSE1+/SENSE2+; supports true high-side or low-side current sensing across full rail |
| ADC Resolution & Accuracy | Configurable 8-/12-bit; ±0.3% total unadjusted error (12-bit mode) ensures <±0.31mA error at 100A with 1mΩ shunt |
| Current Sense Full-Scale | 51.2mV differential input; compatible with standard 0.5mΩ–10mΩ shunts for 5A–100A measurement ranges |
| I²C Interface | Standard mode (400kHz max); separate SDAI (input) and SDAO (output) pins simplify opto-isolation without level shifters |
| Operating Temperature | 0°C to 70°C (C-grade); validated for commercial telecom and industrial control environments |
| Shutdown Current | 25μA typical; reduces system standby power in battery-backed or energy-sensitive applications |
Pinout & Package
Package: 16-lead (4mm × 3mm) plastic DFN with exposed pad (pin 17, optional GND connection). Thermal resistance θJA = 43°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SENSE1+, SENSE2+ | Supply voltage & current sense input | High-impedance inputs for 0V–100V rail monitoring; also serve as positive terminals for current shunt connections |
| SENSE1−, SENSE2− | Current sense differential input | Accepts 0V–1V differential voltage across external shunt; full-scale 51.2mV enables precise low-value resistor use |
| VDD | Primary high-voltage supply input | Powers internal LDO (5V @ INTVCC) when ≥8V; supports direct connection to 48V telecom or 96V industrial 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 node |
| SDAI, SDAO | I²C data input/output (separate) | Enables galvanic isolation: SDAI driven by master, SDAO pulled low by LTC2992CDE#PBF for ACK/data; tie together for standard I²C |
| SCL | I²C clock input | Open-drain input with 6.3V internal clamp; accepts 0–5.9V logic; requires external pull-up to VDD or INTVCC |
| 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 select | Set device address (0x28–0x30) by tying to GND, INTVCC, or leaving floating; supports up to 9 devices on same bus |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent power monitoring | Simultaneously computes real-time current, voltage, and power for two supplies - eliminates need for two discrete monitors |
| Programmable min/max storage | On-chip memory retains extreme values per channel; enables trend analysis and fault root-cause tracing without host MCU intervention |
| Split SDAI/SDAO interface | Eliminates bidirectional bus contention in isolated designs; allows direct connection to optocoupler inputs without external logic |
| Shunt regulator mode for >100V | INTVCC functions as 6.2V shunt node; enables safe operation with 110VDC or 3-phase rectified inputs using simple series resistor |
| Configurable ADC resolution | Runtime-selectable 8-bit (3.9ms conv.) or 12-bit (62.4ms conv.) mode balances speed vs. precision for dynamic load profiling |
Applications
| Telecom Power Shelf Monitoring | Industrial 48V DC Distribution |
|---|---|
Use Scenario: Real-time supervision of redundant -48V DC feeds in central office power systems, detecting imbalance, overload, or open-circuit faults. IC Role / Device Role / Timing Role: Dual-channel current/voltage/power monitor with programmable alert thresholds and DATAREADY signaling for host polling efficiency. Use Value: Enables predictive maintenance by logging min/max current over time and triggering alerts before fuse blow or rectifier failure. | Use Scenario: Monitoring parallel 48V power rails feeding PLCs, motor drives, and I/O modules in factory automation cabinets. IC Role / Device Role / Timing Role: High-side current sensor with 0V–100V common-mode range, interfacing directly to 48V bus without level-shifting circuitry. Use Value: Reduces BOM count by integrating two independent monitors, ADCs, and I²C interface into single 4mm×3mm DFN package. |
| Automotive 12V/24V Battery Management | Server Rack Power Telemetry |
Use Scenario: Measuring charge/discharge current and terminal voltage of lead-acid or LiFePO₄ starter batteries in commercial vehicles. IC Role / Device Role / Timing Role: Rail-to-rail voltage monitor with shutdown mode (<25μA) for always-on battery sensing; GPIO4 asserts ALERT on overvoltage/undervoltage. Use Value: Supports ISO 16750-2 compliance with 100V absolute max rating and robust ESD protection on all analog inputs. | Use Scenario: Per-server node power telemetry in hyperscale data centers, feeding real-time PUE analytics and thermal management algorithms. IC Role / Device Role / Timing Role: Dual-supply monitor reporting V/I/P via I²C to BMC; stores min/max for historical load profiling and capacity planning. Use Value: Delivers ±0.3% power accuracy at 12-bit resolution - sufficient for Tier IV data center metering standards without external calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA226AIDGST | Single-channel, 16-bit ΔΣ ADC; 0–36V common-mode; no integrated shunt regulator or voltage monitoring beyond VBUS | Requires external voltage dividers for >36V rails; lacks dual-supply correlation and total power summation | Choose for higher-resolution single-rail monitoring where cost and board space outweigh multi-rail integration needs |
| MAX40086ATA+T | Dual-channel, 12-bit SAR ADC; 0–100V common-mode; no built-in power calculation or min/max storage | Needs host MCU for V×I multiplication and statistics; no DATAREADY or ALERT hardware signaling | Prefer when deterministic conversion timing (SAR) is critical and firmware handles post-processing |
Compared with INA226AIDGST and MAX40086ATA+T, the LTC2992CDE#PBF uniquely integrates dual-rail monitoring, on-chip power computation, min/max logging, and isolated I²C support - reducing firmware overhead and enabling compact, self-contained power telemetry nodes.
Availability
LTC2992CDE#PBF is available at Aetrix Electronics and suitable for telecom infrastructure, industrial 48V DC distribution, and automotive battery management requiring stable component supply and long-term production continuity.
Supply support for LTC2992CDE#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, and communications markets.
The LTC2992 product line delivers integrated dual-rail power monitoring for high-voltage systems, designed specifically to replace discrete current-sense amplifiers, ADCs, and microcontrollers in telecom, server, and industrial power subsystems.
FAQ
What is the maximum common-mode voltage the LTC2992CDE#PBF can measure on SENSE1+ and SENSE2+?
The LTC2992CDE#PBF supports a 0V to 100V input common-mode range on SENSE1+ and SENSE2+. This allows direct high-side current sensing on 48V telecom rails or 96V industrial buses without external level-shifting circuitry. Absolute maximum rating is 100V, and operation above this risks permanent damage per the datasheet's Absolute Maximum Ratings table.
Does the LTC2992CDE#PBF require external components for basic dual-supply monitoring?
Yes - the LTC2992CDE#PBF requires external shunt resistors (e.g., 0.01Ω) between SENSE1+/SENSE1− and SENSE2+/SENSE2−, a 0.1μF bypass capacitor on INTVCC, and pull-up resistors on SCL and SDAI/SDAO. No external op-amps, voltage dividers, or ADCs are needed, as all signal conditioning and conversion is integrated within the LTC2992CDE#PBF.
How does the LTC2992CDE#PBF handle power calculation and storage?
The LTC2992CDE#PBF digitally multiplies synchronized voltage and current samples (V × I) in real time to compute instantaneous power per rail. It accumulates total current (I1 + I2) and total power (P1 + P2), and stores minimum and maximum values for each measured parameter in on-chip registers - all without host MCU involvement.
Can the LTC2992CDE#PBF operate from a 3.3V supply?
No - the LTC2992CDE#PBF requires VDD ≥ 2.7V but is not rated for 3.3V-only operation. Its internal LDO activates only when VDD ≥ 8V (producing 5V at INTVCC). For 3.3V systems, INTVCC must be supplied externally with 2.7V–5.8V, and VDD tied to INTVCC. Direct 3.3V on VDD falls below the 8V LDO enable threshold and may cause undefined behavior.
What is the function of the split SDAI and SDAO pins on the LTC2992CDE#PBF?
The split SDAI (data input) and SDAO (data output) pins on the LTC2992CDE#PBF eliminate bidirectional bus contention in opto-isolated I²C designs. SDAI receives commands from the master; SDAO transmits ACKs and data back - allowing direct connection to separate optocoupler channels without external logic gates or direction control signals.
LTC2992CDE#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:
- 0°C ~ 70°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-DFN (4x3)
LTC2992CDE#PBF FAQ
1.How can I place an order for LTC2992CDE#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2992CDE#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 LTC2992CDE#PBF reliable?
The price and inventory of LTC2992CDE#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2992CDE#PBF is usually 5 days.
3.What payment methods are accepted for LTC2992CDE#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2992CDE#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2992CDE#PBF?
LTC2992CDE#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2992CDE#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 LTC2992CDE#PBF?
For technical support, including LTC2992CDE#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2992CDE#PBF requirements.
6.How does Aetrix verify that LTC2992CDE#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2992CDE#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 LTC2992CDE#PBF meets industry standards.
7.What is the process for return or replacement of LTC2992CDE#PBF?
All LTC2992CDE#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2992CDE#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 LTC2992CDE#PBF part is unused and in its original packaging.
Return procedure for LTC2992CDE#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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