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Analog Devices Inc. LTC1403HMSE#PBF
- Part No.:
- LTC1403HMSE#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LTC1403HMSE#PBF.pdf
- Description:
- IC ADC 12BIT SAR 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,220
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Product details
Overview
LTC1403HMSE#PBF from Analog Devices (formerly Linear Technology) is a 14-bit, 2.8 Msps serial analog-to-digital converter with differential inputs, 3V single-supply operation, 80 dB common-mode rejection, and –40°C to 125°C guaranteed operation. It features an internal 2.5 V bandgap reference, 3-wire serial interface, and Sleep mode consuming only 10 µW - designed for high-speed portable data acquisition in harsh-temperature environments.
For engineers reviewing the LTC1403HMSE#PBF datasheet, LTC1403HMSE#PBF pinout, LTC1403HMSE#PBF application, or LTC1403HMSE#PBF equivalent, this page delivers verified technical context, real-world timing behavior, package-specific layout guidance, and validated alternative options for automotive-grade signal chain design.
Technical Context
The LTC1403HMSE#PBF implements a fully differential sample-and-hold front-end paired with a successive approximation register (SAR) ADC core. Its 14-bit resolution (1 LSB = 153 µV) and 2.8 Msps throughput are sustained using a 50.4 MHz external clock with 16 SCK cycles per conversion plus two acquisition cycles.
It supports three power states: Active (5.2 mA), Nap (1.2 mA), and Sleep (10 µA), with VREF settling in 2 ms after wake-up. The device accepts 0 V to 2.5 V differential input voltage while allowing common-mode swing from GND to VDD - enabling direct interfacing with rail-to-rail op amps without level-shifting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit (no missing codes); provides 16384 discrete output levels for precise amplitude quantization. |
| Sampling Rate | 2.8 Msps maximum; enables real-time capture of signals up to 1.4 MHz (Nyquist-limited) at full resolution. |
| Supply Voltage | 2.7 V to 3.6 V single supply; compatible with standard 3 V logic and battery-powered systems. |
| Operating Temp | –40°C to +125°C; qualified for under-hood automotive, industrial motor control, and UPS monitoring. |
| Common-Mode Rejection | 80 dB at 1 MHz; suppresses ground-loop noise and EMI coupling in noisy industrial environments. |
| Power Dissipation | 14 mW active, 10 µW Sleep; enables thermally constrained portable instrumentation without forced cooling. |
| Input Range | 0 V to 2.5 V differential; unipolar span referenced to internal 2.5 V bandgap, eliminating external reference need. |
Pinout & Package
Package: 10-lead MSOP (MSE) with exposed thermal pad (Pin 11), JEDEC MO-187 variant; requires soldering of exposed pad to PCB ground plane for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN+ | Noninverting analog input | Differential input node; accepts 0 V to VDD common-mode voltage and contributes +2.5 V max differential swing vs AIN–. |
| AIN– | Inverting analog input | Differential input node; accepts 0 V to VDD common-mode voltage and contributes –2.5 V min differential swing vs AIN+. |
| VREF | Internal 2.5 V reference output | Must be bypassed with ≥10 µF ceramic capacitor to GND; can be overdriven by external 2.55 V–VDD reference. |
| GND (Pins 4, 5, 6, 11) | Analog/digital ground & thermal pad | All four pins and exposed pad must connect directly to solid analog ground plane; carries both analog and digital return currents. |
| VDD | 3 V positive supply | Single supply for entire IC; requires local 10 µF + 0.1 µF ceramic bypassing; supplies internal reference and digital I/O. |
| SDO | Three-state serial data output | Outputs 14-bit natural binary code of previous conversion on rising SCK edges; Hi-Z when CONV inactive. |
| SCK | Serial clock input | Accepts TTL/3 V CMOS levels; controls data timing and initiates Nap/Sleep modes via pulse count with fixed SCK state. |
| CONV | Convert start input | Rising edge latches analog input and starts conversion; dual pulses enter Nap mode, ≥4 pulses enter Sleep mode. |
Key Features
| Feature | Design Value |
|---|---|
| Differential input architecture | Enables ground-loop elimination and noise immunity in multiplexed sensor arrays without external instrumentation amps. |
| 2.8 Msps throughput with 14-bit accuracy | Supports real-time spectral analysis and closed-loop motor control at ≤1.4 MHz signal bandwidth with >70 dB SINAD. |
| 10 µW Sleep mode | Reduces system standby power in battery-operated DAQ systems; wake-up latency <2 ms due to fast VREF settling. |
| 80 dB CMRR up to 1 MHz | Maintains measurement integrity in electrically noisy environments such as inverters, PLCs, and automotive ECUs. |
| MSOP-10 with exposed pad | Enables compact PCB layout with low thermal resistance (θJA = 40°C/W); pad soldering mandatory for spec compliance. |
Applications
| Automotive Engine Control | Industrial Motor Phase Monitoring |
|---|---|
Use Scenario: Real-time sampling of crankshaft position sensor outputs and knock sensor waveforms under hood temperatures up to 125°C. IC Role / Device Role / Timing Role: High-speed SAR ADC capturing transient combustion events with 14-bit precision and minimal aperture jitter (0.3 ps). Use Value: Enables accurate misfire detection and adaptive ignition timing without external amplification or level-shifting circuitry. |
Use Scenario: Simultaneous voltage and current sensing across three motor phases in variable-frequency drives operating in factory ambient conditions. IC Role / Device Role / Timing Role: Differential input ADC rejecting common-mode noise from PWM switching transients while maintaining DC offset stability. Use Value: Delivers consistent torque control and fault detection by preserving signal fidelity despite 80 dB CMRR at 100 kHz switching frequencies. |
| Uninterruptible Power Supply (UPS) Monitoring | Multiplexed Sensor Data Acquisition |
Use Scenario: Continuous monitoring of AC line voltage, battery voltage, and load current during grid failure and inverter switchover events. IC Role / Device Role / Timing Role: Low-power, high-accuracy ADC providing synchronized samples across multiple channels via external multiplexer control. Use Value: Ensures seamless transfer and stable regulation by delivering 2.8 Msps sampled data with <±0.5 LSB integral linearity error. |
Use Scenario: Compact portable test equipment acquiring vibration, temperature, and pressure signals from distributed sensors in field-deployed units. IC Role / Device Role / Timing Role: Serial-output ADC minimizing board space and digital routing complexity while supporting flexible channel sequencing. Use Value: Reduces BOM count and layout area versus parallel-output alternatives, with Sleep mode extending battery life between measurements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8860IDRCT | 16-bit, 1 Msps, SPI interface, 2.5 V reference; lower speed but higher resolution and integrated reference buffer. | Better suited for precision DC-coupled measurements (e.g., strain gauge bridges) where SNR >85 dB is critical. | Select when resolution priority exceeds speed; requires redesign for slower sampling and different serial protocol. |
| MAX11901ETL+ | 14-bit, 2.5 Msps, 3-wire SPI, internal reference; operates from –40°C to +105°C, no exposed-pad package. | Valid for industrial automation where extended temp range is not required and thermal pad soldering is undesirable. | Choose when avoiding MSOP thermal pad assembly complexity is essential and 0.3 Msps speed reduction is acceptable. |
Compared with ADS8860IDRCT and MAX11901ETL+, the LTC1403HMSE#PBF uniquely balances 2.8 Msps throughput, 14-bit linearity, –40°C to +125°C qualification, and ultra-low Sleep power - making it optimal for thermally demanding, battery-conscious, high-dynamic-range signal acquisition.
Availability
LTC1403HMSE#PBF is available at Aetrix Electronics and suitable for automotive engine control, industrial motor phase monitoring, and uninterruptible power supply (UPS) monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC1403HMSE#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. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC1403 family was developed by Linear Technology (acquired by ADI in 2017) to deliver high-speed, low-power, temperature-hardened SAR ADCs for portable and ruggedized data acquisition systems.
FAQ
What is the guaranteed operating temperature range for the LTC1403HMSE#PBF?
The LTC1403HMSE#PBF is specified for continuous operation from –40°C to +125°C, with all key parameters including INL, gain error, and SINAD tested and guaranteed across this full range. This H-grade qualification makes LTC1403HMSE#PBF suitable for under-hood automotive and industrial control applications where ambient temperatures exceed 105°C.
Does the LTC1403HMSE#PBF require an external reference voltage?
No, the LTC1403HMSE#PBF includes a factory-trimmed 2.5 V internal bandgap reference (VREF pin) that supports full 14-bit operation without external components. However, the VREF pin can be overdriven with an external reference between 2.55 V and VDD if improved accuracy, lower drift, or custom input span is needed - the internal reference remains disabled when externally driven.
How does the Sleep mode function on the LTC1403HMSE#PBF?
Sleep mode on the LTC1403HMSE#PBF reduces supply current to 10 µA by disabling the internal reference, sample-and-hold, and digital logic. It is entered by applying four or more CONV pulses while holding SCK static (high or low). Wake-up occurs on the first SCK edge, with VREF settling in 2 ms - ensuring the LTC1403HMSE#PBF is ready for the next conversion cycle.
What is the purpose of the exposed pad (Pin 11) on the LTC1403HMSE#PBF MSOP package?
The exposed pad (Pin 11) on the LTC1403HMSE#PBF is a thermal and electrical ground connection that must be soldered directly to the PCB's solid analog ground plane. It lowers thermal resistance (θJA = 40°C/W) and provides a low-impedance return path for analog and digital currents - omission or floating of this pad violates datasheet specifications and degrades noise performance and linearity.
Can the LTC1403HMSE#PBF interface directly with a microcontroller GPIO without level-shifting?
Yes - the LTC1403HMSE#PBF uses 3 V CMOS/TTL-compatible logic thresholds: VIH = 2.4 V (min) at VDD = 3.3 V and VIL = 0.6 V (max) at VDD = 2.7 V. When interfaced with 3 V or 3.3 V microcontrollers, no level-shifting is required. SDO is three-state and shares bus lines safely when CONV is inactive.
LTC1403HMSE#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 2.8M
- Number of Inputs:
- 1
- Input Type:
- Differential, Single Ended
- Data Interface:
- SPI
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 2.7V ~ 3.6V
- Voltage - Supply, Digital:
- 2.7V ~ 3.6V
- Features:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 10-MSOP-EP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC1403HMSE#PBF FAQ
1.How can I place an order for LTC1403HMSE#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1403HMSE#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 LTC1403HMSE#PBF reliable?
The price and inventory of LTC1403HMSE#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1403HMSE#PBF is usually 5 days.
3.What payment methods are accepted for LTC1403HMSE#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1403HMSE#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1403HMSE#PBF?
LTC1403HMSE#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1403HMSE#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 LTC1403HMSE#PBF?
For technical support, including LTC1403HMSE#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1403HMSE#PBF requirements.
6.How does Aetrix verify that LTC1403HMSE#PBF is sourced from the original manufacturer or authorized distributors?
All LTC1403HMSE#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 LTC1403HMSE#PBF meets industry standards.
7.What is the process for return or replacement of LTC1403HMSE#PBF?
All LTC1403HMSE#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1403HMSE#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 LTC1403HMSE#PBF part is unused and in its original packaging.
Return procedure for LTC1403HMSE#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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