My Inquiry
My Account
Analog Devices Inc. LTC6115IMS#PBF
- Part No.:
- LTC6115IMS#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 12-TSSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC6115IMS#PBF.pdf
- Description:
- IC CURR SENSE 2 CIRCUIT 12MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:104
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC6115IMS#PBF from Analog Devices is a high-voltage, high-side current and voltage sense amplifier in a 12-lead MSOP package. It integrates dual sensing paths: a ±500µV max offset current sense amplifier (5V–100V supply) and a ±0.15% max total gain error voltage sense amplifier with internal 1MΩ divider (0V–100V input). It enables precision power supply and load current monitoring in telecom, industrial, and AEC-Q100 automotive systems.
For engineers reviewing the LTC6115IMS#PBF datasheet, LTC6115IMS#PBF pinout, LTC6115IMS#PBF application, or LTC6115IMS#PBF equivalent, key selection criteria include its dual-sense architecture, rail-to-rail output configurability via external resistors, 1µs response time for overcurrent protection, and guaranteed –40°C to 85°C operation in the IMS grade.
Technical Context
The LTC6115IMS#PBF implements two independent signal chains: a current sense path using a transconductance amplifier that forces –IN to +IN potential and sources proportional output current (OUTI), and a voltage sense path using a precision op-amp (A2) with integrated 1MΩ/25kΩ resistor divider (40× attenuation) referenced to VS. Both paths operate with separate supplies: V+ (5V–100V) powers current sensing, while VS (2.7V–5.5V) powers voltage sensing.
Its architecture supports simultaneous real-time measurement of load current (via external RSENSE) and bus voltage (via VIN), with output signals fully decoupled-OUTI is current-mode (converted externally via ROUT), and OUTV is voltage-mode (rail-to-rail, configurable gain). PSRR exceeds 118dB on V+ and 115dB on VS, ensuring immunity to supply noise in high-noise environments like motor drives or DC/DC converters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Current Sense Supply Range | V+ = 5V to 100V - enables direct high-side sensing in 48V telecom, 60V industrial, and 96V battery systems without level-shifting. |
| Max Input Offset Voltage (Current) | ±500 µV - limits minimum resolvable shunt voltage to ~500 µV, enabling accurate detection of sub-1mA currents with 1Ω RSENSE. |
| Response Time | 1 µs - supports fast overcurrent warning and shut-off control in power supplies and motor drivers. |
| Voltage Sense Input Range | 0V to 100V at VIN - achieved via internal 1MΩ divider; allows direct connection to 48V, 60V, or 96V rails with no external attenuation. |
| Total Gain Error (Voltage) | ±0.15% max - ensures <1.5mV absolute error at 1V full-scale output when monitoring 100V bus, critical for closed-loop regulation. |
| Operating Temperature | –40°C to +85°C - specified performance across commercial/industrial ambient range; IMS grade excludes extended-temp H-grade variants. |
| Supply Current (V+) | 250 µA typical at 5V - ultra-low quiescent draw minimizes impact on high-voltage supply efficiency. |
Pinout & Package
Package: 12-lead plastic MSOP (θJA = 135°C/W, TJMAX = 150°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| –IN (Pin 1) | Inverting input of current sense amplifier A1 | Driven to same potential as +IN; Kelvin connection required for accuracy under high load current. |
| +IN (Pin 12) | Noninverting input of current sense amplifier A1 | Connects to load side of sense resistor; defines reference point for shunt voltage measurement. |
| OUTI (Pin 3) | Current output of A1 | Sources IOUTI = VSENSE/RIN; requires external ROUT to generate voltage output (e.g., 10kΩ → 5V at 500mV sense). |
| GND (Pin 4) | Analog ground reference | Common return for both sense paths; must be low-impedance and isolated from power ground noise. |
| FB (Pin 5) | Inverting input of voltage sense amplifier A2 | Used for closed-loop gain configuration; connects to divider tap between VIN and GND for feedback. |
| OUTV (Pin 6) | Voltage output of A2 | Rail-to-rail output; drives ADC or controller directly; short-circuit protected up to 27mA sink/source. |
| VIN (Pin 9) | High-voltage input to internal 1MΩ divider | Accepts up to 100V; internal resistor network scales input by 40× before A2 amplification. |
| V+ (Pin 11) | Positive supply for current sense circuit | Powers A1 only; independent of VS; withstands 105V absolute max - supports direct connection to HV bus. |
| VS (Pin 7) | Positive supply for voltage sense circuit | Powers A2 only; 2.7V–5.5V range - compatible with standard logic supplies and microcontroller IO rails. |
| NC (Pins 2, 8, 10) | No internal connection | Must remain unconnected; no routing or thermal relief needed. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent sensing channels | Simultaneous current and voltage monitoring eliminates need for separate ICs, reducing BOM count and PCB area in power management systems. |
| Configurable gain via external resistors | RIN and ROUT set current sense gain (e.g., 20×, 50×, 100×); FB pin enables precise voltage gain tuning without trimming. |
| 1MΩ precision internal voltage divider | Enables direct 100V input sensing with ±0.15% gain error - removes external resistor network, improving long-term stability and temperature drift. |
| 118dB min PSRR on V+ | Rejects ripple and noise on high-voltage supply rails, preserving measurement integrity in switching power supplies and inverters. |
| AEC-Q100 qualified (H-grade) | While LTC6115IMS#PBF is I-grade (–40°C to 85°C), its H-grade variant meets automotive reliability standards - design reuse possible with temp grade upgrade. |
Applications
| Telecom Power Monitoring | Battery Management System |
|---|---|
Use Scenario: Real-time monitoring of +48V DC distribution bus current and voltage in central office equipment. IC Role / Device Role / Timing Role: LTC6115IMS#PBF performs high-side current sensing (via 10mΩ shunt) and 48V rail voltage sensing simultaneously to feed telemetry to system controller. Use Value: Enables accurate power budgeting and early fault detection (e.g., cable degradation, connector corrosion) without adding isolation components. | Use Scenario: Cell-level voltage and pack current monitoring in 12S Li-ion battery packs for UPS and energy storage. IC Role / Device Role / Timing Role: LTC6115IMS#PBF measures charge/discharge current (via 5mΩ shunt) and total pack voltage (up to 50.4V) with single-chip integration. Use Value: Reduces component count vs. discrete op-amp + divider solution; ±0.15% voltage gain error ensures SOC estimation accuracy within ±0.3%. |
| Industrial Motor Drive Protection | Automotive 12V/48V Dual-Bus Monitor |
Use Scenario: Overcurrent and overvoltage protection in 24V/48V brushless DC motor controllers. IC Role / Device Role / Timing Role: LTC6115IMS#PBF provides 1µs response current sense output (OUTI) to trigger immediate gate shutdown, while OUTV feeds slow-loop regulation. Use Value: Fast response prevents MOSFET destruction during short-circuit events; dual-path architecture separates protection-critical and control-critical signals. | Use Scenario: Simultaneous monitoring of legacy 12V and new 48V subsystems in mild-hybrid vehicles. IC Role / Device Role / Timing Role: LTC6115IMS#PBF senses current on both rails (using two instances) and monitors 48V bus voltage, feeding data to body control module. Use Value: Supports ISO 21780-compliant 48V system diagnostics; AEC-Q100-compatible design path available via H-grade variant. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side current and voltage sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA226AIDGST | Single-chip bidirectional current/voltage/power monitor with integrated 16-bit ADC; I²C interface; max 36V common-mode; no internal HV divider. | Requires external level-shifting for >36V buses; suited for digital-output systems needing power calculation, not analog loop control. | Select when digital telemetry and power computation are required; avoid when analog rail-to-rail outputs or >36V direct sensing are needed. |
| MAX40056AUT+T | Ultra-precise 100V high-side current sensor only (no voltage sense); ±50µV max offset; 2.7V–5.5V supply; SOT23-6. | Monitors current only; requires separate voltage monitor IC; smaller package but no dual-function integration. | Select when highest current-sense accuracy is critical and voltage sensing is handled elsewhere; use when board space is constrained. |
Compared with INA226AIDGST and MAX40056AUT+T, the LTC6115IMS#PBF uniquely delivers true analog dual-path sensing (current + voltage) with 100V direct input capability and rail-to-rail outputs - essential for analog control loops and HV industrial systems where ADC latency or external level-shifters are unacceptable.
Availability
LTC6115IMS#PBF is available at Aetrix Electronics and suitable for telecom power monitoring, industrial motor drive protection, and battery management systems requiring stable component supply, AEC-Q100 design compatibility, and long-term industrial lifecycle support.
Supply support for LTC6115IMS#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 industrial, automotive, communications, and healthcare markets.
The LTC6115IMS#PBF belongs to Analog Devices' precision current and voltage sensing product line, designed specifically for high-reliability, high-voltage power monitoring in systems where simultaneous analog measurement of current and bus voltage is required without external dividers or level shifters.
FAQ
What is the maximum input voltage the LTC6115IMS#PBF can measure on the VIN pin?
The LTC6115IMS#PBF supports up to 100V on the VIN pin due to its internal 1MΩ precision resistor divider (40× attenuation), enabling direct connection to 48V, 60V, and 96V power rails without external components. Absolute maximum rating is 105V, but full specified performance is guaranteed only up to 100V per the Electrical Characteristics table.
Can the LTC6115IMS#PBF operate with only one supply voltage?
No - the LTC6115IMS#PBF requires two independent supplies: V+ (5V–100V) for the current sense amplifier and VS (2.7V–5.5V) for the voltage sense amplifier. These supplies are electrically isolated within the IC; sharing them compromises PSRR and may violate absolute maximum ratings if VS exceeds 6V.
What is the purpose of the FB pin on the LTC6115IMS#PBF?
On the LTC6115IMS#PBF, the FB (Pin 5) serves as the inverting input for the voltage sense amplifier (A2). It enables precise gain configuration by connecting to a feedback network between OUTV and VIN, allowing users to set full-scale output voltage (e.g., 0–5V for 0–100V input) without trimming resistors or relying solely on the internal divider ratio.
Does the LTC6115IMS#PBF provide overtemperature protection?
The LTC6115IMS#PBF does not include built-in overtemperature shutdown or flagging. Its absolute maximum junction temperature is 150°C, and thermal design must ensure θJA × PDISS + TAMB stays below this limit. The datasheet provides guidance for calculating worst-case dissipation, especially at high V+ and IOUTI, but no internal thermal protection circuitry is present in the LTC6115IMS#PBF.
How does the LTC6115IMS#PBF achieve high PSRR on the V+ supply?
The LTC6115IMS#PBF achieves ≥118dB PSRR on V+ through a combination of proprietary high-voltage input stage design and internal regulation of the current sense amplifier's bias networks. This is verified across 6V–100V V+ range with 5mV input transients, ensuring minimal coupling of supply ripple into the OUTI output - critical for clean measurements in noisy switch-mode power supplies.
LTC6115IMS#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 12-TSSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Current Sense
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.06V/µs
- Gain Bandwidth Product:
- 530 kHz
- -3db Bandwidth:
- 200 kHz
- Current - Input Bias:
- 85 nA
- Voltage - Input Offset:
- 85 µV
- Current - Supply:
- 400µA (x2 Channels)
- Current - Output / Channel:
- 27 mA
- Voltage - Supply Span (Min):
- -
- Voltage - Supply Span (Max):
- -
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-MSOP
LTC6115IMS#PBF FAQ
1.How can I place an order for LTC6115IMS#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6115IMS#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 LTC6115IMS#PBF reliable?
The price and inventory of LTC6115IMS#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6115IMS#PBF is usually 5 days.
3.What payment methods are accepted for LTC6115IMS#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6115IMS#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6115IMS#PBF?
LTC6115IMS#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6115IMS#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 LTC6115IMS#PBF?
For technical support, including LTC6115IMS#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6115IMS#PBF requirements.
6.How does Aetrix verify that LTC6115IMS#PBF is sourced from the original manufacturer or authorized distributors?
All LTC6115IMS#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 LTC6115IMS#PBF meets industry standards.
7.What is the process for return or replacement of LTC6115IMS#PBF?
All LTC6115IMS#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6115IMS#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 LTC6115IMS#PBF part is unused and in its original packaging.
Return procedure for LTC6115IMS#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC6115IMS#PBF 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…
