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Analog Devices Inc. LTC1403AIMSE#PBF
- Part No.:
- LTC1403AIMSE#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LTC1403AIMSE#PBF.pdf
- Description:
- IC ADC 14BIT SAR 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,703
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Product details
Overview
LTC1403AIMSE#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 Sleep mode consuming only 10 µW - designed for high-speed portable data acquisition in automotive and communications systems.
For engineers reviewing the LTC1403AIMSE#PBF datasheet, LTC1403AIMSE#PBF pinout, LTC1403AIMSE#PBF application, or LTC1403AIMSE#PBF equivalent, key selection considerations include guaranteed –40°C to +85°C operation, 10-lead MSOP package with exposed pad, 2.5 V internal reference (overdrivable), and 3-wire serial interface timing compatibility with standard microcontrollers.
Technical Context
The LTC1403AIMSE#PBF implements a fully differential sample-and-hold architecture with 13 pF input capacitance and 39 ns acquisition time, enabling accurate sampling of signals up to 50 MHz full-power bandwidth. Its internal 2.5 V bandgap reference features ±15 ppm/°C tempco and settles in 2 ms after Sleep wake-up.
Conversion is triggered on the rising edge of CONV; 14-bit output data appears on SDO over 16 SCK cycles, with timing validated for 50.4 MHz clock operation at full 2.8 Msps rate. Nap (3 mW) and Sleep (10 µW) shutdown modes are controlled via pulse-counting on CONV while SCK is held static.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit (no missing codes); LSB = 153 µV with 2.5 V reference - enables 16,384 distinct digital steps across 0–2.5 V differential input range. |
| Sampling Rate | 2.8 Msps maximum; requires ≥50.4 MHz SCK with 2-cycle acquisition gap between conversions - supports real-time capture of signals up to ~1.4 MHz Nyquist bandwidth. |
| Supply & Power | 3 V single supply; 4.7 mA active current (14 mW); 3 mW Nap mode; 10 µW Sleep mode - suitable for battery-powered instrumentation with dynamic power scaling. |
| Input Range | 0 V to 2.5 V differential (AIN+ – AIN–); common-mode range 0 V to VDD - allows direct interfacing with single-supply sensor outputs and eliminates ground-loop errors. |
| AC Performance | 70.5 dB SINAD @ 100 kHz; –86 dB THD; 80 dB CMRR @ 1 MHz - ensures high-fidelity digitization of low-distortion, noise-sensitive analog signals. |
| Operating Temp | –40°C to +85°C (I-grade); qualified per industrial temperature specifications - supports deployment in engine control units, base station front-ends, and industrial PLCs. |
| Reference | 2.5 V internal bandgap (±15 ppm/°C); overdrivable with 2.55 V–VDD external reference - provides stable scaling without external components, or precision flexibility when needed. |
Pinout & Package
Package: 10-lead plastic MSOP (MSE) with exposed thermal pad (Pin 11), JEDEC MO-187 variant; 3 mm × 3 mm footprint; 0.5 mm pitch; GND-exposed pad must be soldered to PCB for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 AIN+ | Noninverting analog input | Differential input node; accepts 0 V to VDD common-mode voltage and contributes +2.5 V max differential swing relative to AIN–. |
| 2 AIN– | Inverting analog input | Differential input node; accepts 0 V to VDD common-mode voltage and contributes –2.5 V min differential swing relative to AIN+. |
| 3 VREF | Internal reference output | 2.5 V buffered bandgap reference; requires ≥10 µF bypass to GND; can be overdriven by external 2.55–VDD reference. |
| 4 GND | Analog/digital ground | Primary ground connection; ties to exposed pad (Pin 11); carries both analog return and digital output currents - must connect directly to solid ground plane. |
| 5 GND | Ground | Secondary ground pin; reduces impedance path for analog signal return and improves PSRR. |
| 6 GND | Ground | Third ground pin; enhances grounding integrity for high-frequency noise suppression. |
| 7 VDD | 3 V positive supply | Single power rail for entire device; requires local 10 µF + 0.1 µF bypass; supplies analog core and digital I/O simultaneously. |
| 8 SDO | Three-state serial data output | 14-bit MSB-first output; tri-stated when CONV inactive; timing referenced to SCK rising edge; compatible with SPI-compatible controllers. |
| 9 SCK | Serial clock input | TTL/3 V CMOS-compatible clock; advances conversion state machine and clocks out data; one pulse wakes from Sleep mode. |
| 10 CONV | Convert start input | Rising-edge-triggered command; initiates sample-and-hold and conversion; pulse count determines Nap/Sleep entry (2 or ≥4 pulses). |
Key Features
| Feature | Design Value |
|---|---|
| Differential input architecture | Enables 80 dB CMRR up to 1 MHz - rejects ground loops and common-mode noise without external instrumentation amplifiers. |
| Low-power shutdown modes | 10 µW Sleep and 3 mW Nap modes reduce system-level power budget during idle intervals - critical for portable and energy-constrained designs. |
| On-chip 2.5 V reference | Factory-trimmed bandgap with ±15 ppm/°C tempco and 2 ms wake-up settling - eliminates external reference IC and associated layout complexity. |
| 3-wire serial interface | CONV/SCK/SDO protocol requires no chip-select or frame-sync signals - simplifies MCU GPIO usage and reduces PCB routing overhead. |
| MSOP-10 with exposed pad | Compact 3 mm × 3 mm footprint with thermal pad - delivers high performance in space-constrained applications like motor control modules and telecom line cards. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Data Acquisition System |
|---|---|
Use Scenario: Digitizing crankshaft position sensor signals and wideband oxygen sensor outputs under harsh under-hood conditions. IC Role / Device Role / Timing Role: High-speed, low-noise ADC capturing synchronized analog waveforms at >2 Msps for real-time combustion analysis. Use Value: Guaranteed –40°C to +85°C operation and 80 dB CMRR suppress ignition noise and ground shifts, improving misfire detection accuracy. |
Use Scenario: Sampling multiple sensor channels (temperature, pressure, vibration) in programmable logic controller (PLC) backplanes. IC Role / Device Role / Timing Role: Standalone 14-bit ADC interfaced to FPGA or ARM Cortex-M microcontroller via 3-wire serial bus. Use Value: 2.8 Msps throughput enables oversampling for noise reduction; Sleep mode cuts standby power to <15 µW per channel. |
| Communications Base Station Front-End | Uninterruptible Power Supply (UPS) Monitoring |
Use Scenario: Capturing RF power amplifier feedback signals and antenna VSWR monitoring in small-cell LTE infrastructure. IC Role / Device Role / Timing Role: Differential ADC digitizing DC-coupled IF signals with minimal distortion before digital predistortion processing. Use Value: 70.5 dB SINAD at 100 kHz and 50 MHz full-power bandwidth preserve signal fidelity for adaptive linearization algorithms. |
Use Scenario: Real-time monitoring of battery bank voltage, inverter output waveform, and load current in online double-conversion UPS units. IC Role / Device Role / Timing Role: High-accuracy ADC measuring 0–2.5 V differential inputs from isolated shunt amplifiers and voltage dividers. Use Value: Internal 2.5 V reference eliminates calibration drift; 14-bit resolution detects <153 µV changes in 48 V DC bus sensing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed, low-power ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8326IDGSR | 16-bit, 1 Msps SAR ADC; 2.7–5.5 V supply; SPI interface; no integrated reference - requires external 2.5 V reference. | Higher resolution but lower speed; lacks Sleep mode (<1 µA standby); larger 10-pin VSSOP package. | Select when DC accuracy and 16-bit resolution outweigh speed requirements; verify external reference stability and layout noise immunity. |
| MAX1190ETE+ | 14-bit, 2.5 Msps SAR ADC; 2.7–3.6 V supply; 3-wire serial interface; integrated 2.048 V reference; –40°C to +85°C grade. | Slightly lower sampling rate (2.5 vs 2.8 Msps); 2.048 V reference limits input span to 0–2.048 V; same MSOP-10 package. | Choose when 2.048 V reference aligns with system scaling; confirm 2.5 Msps meets timing margin for target signal bandwidth. |
Compared with ADS8326IDGSR and MAX1190ETE+, the LTC1403AIMSE#PBF delivers the highest sampling rate (2.8 Msps) with lowest Sleep power (10 µW) and widest differential input range (0–2.5 V) among these three - making it optimal for portable, high-throughput, battery-sensitive measurement systems.
Availability
LTC1403AIMSE#PBF is available at Aetrix Electronics and suitable for automotive engine control, industrial data acquisition, and communications base station applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC1403AIMSE#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 semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC1403 series belongs to ADI's precision high-speed data converter product line, engineered for applications demanding low power, small size, and robust AC performance in harsh environments - especially portable instrumentation and distributed sensing nodes.
FAQ
What is the operating temperature range for the LTC1403AIMSE#PBF?
The LTC1403AIMSE#PBF is rated for –40°C to +85°C operation (I-grade), with full specification compliance across this industrial temperature range - including parameters such as offset error, gain error, SINAD, and CMRR. This makes the LTC1403AIMSE#PBF suitable for under-hood automotive sensors, factory-floor PLCs, and outdoor telecom equipment where ambient extremes are expected.
Does the LTC1403AIMSE#PBF require an external reference voltage?
No, the LTC1403AIMSE#PBF includes a factory-trimmed 2.5 V internal bandgap reference (Pin 3) that is fully functional with proper 10 µF bypassing. However, the VREF pin can be overdriven with an external reference between 2.55 V and VDD if higher precision or different scaling is required - the LTC1403AIMSE#PBF automatically disables its internal reference when external voltage exceeds 2.55 V.
How does the Sleep mode work on the LTC1403AIMSE#PBF?
Sleep mode on the LTC1403AIMSE#PBF is activated by applying four or more CONV pulses while SCK is held static (high or low); power drops to 10 µW. Waking requires one SCK pulse, after which the internal 2.5 V reference settles in 2 ms before valid conversions resume. This behavior is explicitly confirmed in the LTC1403AIMSE#PBF datasheet timing diagrams and shutdown mode tables.
What is the differential input voltage range of the LTC1403AIMSE#PBF?
The LTC1403AIMSE#PBF accepts a differential input voltage range of 0 V to 2.5 V (AIN+ – AIN–), with each input allowed to swing from ground to VDD (0 V to 3.6 V). If the differential difference exceeds 2.5 V, the output code saturates at 0x3FFF; if below 0 V, it saturates at 0x0000 - a hard-clamped unipolar transfer function confirmed in the LTC1403AIMSE#PBF converter characteristics table.
Is the LTC1403AIMSE#PBF pin-compatible with the LTC1403A series variants?
Yes, all LTC1403A variants - including LTC1403AIMSE#PBF, LTC1403ACMSE#PBF, and LTC1403AHMSE#PBF - share identical 10-lead MSOP (MSE) pinouts and electrical interfaces. The only differences are temperature grade (I = –40°C to +85°C), resolution (14-bit for all A-grade parts), and minor AC performance tolerances - allowing drop-in replacement within the same grade family.
LTC1403AIMSE#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:
- 14
- 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 ~ 85°C
- Supplier Device Package:
- 10-MSOP-EP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC1403AIMSE#PBF FAQ
1.How can I place an order for LTC1403AIMSE#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1403AIMSE#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 LTC1403AIMSE#PBF reliable?
The price and inventory of LTC1403AIMSE#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1403AIMSE#PBF is usually 5 days.
3.What payment methods are accepted for LTC1403AIMSE#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1403AIMSE#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1403AIMSE#PBF?
LTC1403AIMSE#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1403AIMSE#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 LTC1403AIMSE#PBF?
For technical support, including LTC1403AIMSE#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1403AIMSE#PBF requirements.
6.How does Aetrix verify that LTC1403AIMSE#PBF is sourced from the original manufacturer or authorized distributors?
All LTC1403AIMSE#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 LTC1403AIMSE#PBF meets industry standards.
7.What is the process for return or replacement of LTC1403AIMSE#PBF?
All LTC1403AIMSE#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1403AIMSE#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 LTC1403AIMSE#PBF part is unused and in its original packaging.
Return procedure for LTC1403AIMSE#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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