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Analog Devices Inc. LTC2356IMSE-14#PBF
- Part No.:
- LTC2356IMSE-14#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LTC2356IMSE-14#PBF.pdf
- Description:
- IC ADC 14BIT SAR 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,276
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Product details
Overview
LTC2356IMSE-14#PBF from Analog Devices (formerly Linear Technology) is a 14-bit, 3.5 Msps serial successive-approximation ADC with differential inputs, single 3.3V supply operation, ±1.25V bipolar input range, and 80 dB common-mode rejection. It delivers 74.1 dB SINAD at 100 kHz and operates in industrial temperature range (–40°C to +85°C), making it suitable for high-speed portable data acquisition and multiphase motor control systems.
For engineers reviewing the LTC2356IMSE-14#PBF datasheet, LTC2356IMSE-14#PBF pinout, LTC2356IMSE-14#PBF application, or LTC2356IMSE-14#PBF equivalent, key selection criteria include its 3.5 Msps throughput with 16-cycle SPI-compatible interface, 13 µW Sleep mode power, 10-lead MSOP package, and differential sampling architecture enabling ground-loop immunity in noisy industrial environments.
Technical Context
The LTC2356IMSE-14#PBF employs a fully differential sample-and-hold front-end that accepts AIN+ and AIN– inputs simultaneously, rejecting common-mode noise up to 100 MHz while maintaining ±1.25 V differential span referenced to internal 2.5 V bandgap. Its timing logic synchronizes conversion start (CONV↑) with SCK edges, delivering 14-bit 2's complement data over 16 clock cycles.
It supports three power states: Active (5.5 mA), Nap (1.1 mA), and Sleep (4 µA), with VREF settling in 2 ms after wake-up. The internal reference can be overdriven by an external 2.55 V to 3.3 V source, and analog input leakage is ≤1 µA with 13 pF input capacitance and 39 ns acquisition time.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit with no missing codes; LSB = 152 µV for full-scale ±1.25 V range. |
| Sampling Rate | 3.5 Msps maximum; requires 63 MHz SCK with 2-cycle acquisition gap between conversions. |
| SINAD | 74.1 dB at 100 kHz input; defines usable dynamic range for precision AC signal digitization. |
| Power Consumption | 18 mW active (5.5 mA @ 3.3 V); Sleep mode draws only 4 µA (13 µW), enabling battery-powered operation. |
| Common-Mode Rejection | 80 dB at 1 MHz; suppresses ground loops and shared noise in industrial sensor interfaces. |
| Analog Input Range | ±1.25 V differential (AIN+ – AIN–); absolute voltage on each pin must stay within 0 V to VDD (3.3 V). |
| Reference | Internal 2.5 V bandgap (±15 ppm/°C tempco); overdrivable with external 2.55 V to VDD reference. |
Pinout & Package
Package: 10-lead plastic MSOP (MSE) with exposed pad (Pin 11) soldered to PCB ground plane; θJA = 40°C/W, TJMAX = 125°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (AIN+) | Noninverting analog input | Differential input node; accepts 0 V to VDD common-mode swing and ±1.25 V differential swing relative to AIN–. |
| 2 (AIN–) | Inverting analog input | Differential input node; complements AIN+; both sampled simultaneously for true differential acquisition. |
| 3 (VREF) | Internal reference output | 2.5 V buffered reference; must be bypassed with ≥10 µF ceramic capacitor to GND; supports external overdrive. |
| 4,5,6,11 (GND) | Ground terminals | Four dedicated GND pins plus exposed pad; all must connect directly to solid analog ground plane to minimize noise coupling. |
| 7 (VDD) | Positive supply | Single 3.3 V supply for entire device; requires local 10 µF + 0.1 µF bypassing near Pins 6 and 7. |
| 8 (SDO) | Three-state serial data output | 2's complement 14-bit output; tri-states when SCK inactive; valid data appears 8 ns after SCK↑. |
| 9 (SCK) | Serial clock input | TTL/CMOS-compatible clock; rising edge advances conversion and latches output bits; wakes device from Sleep/Nap. |
| 10 (CONV) | Convert start input | Rising-edge-triggered; initiates sampling and conversion; two pulses enter Nap, four+ enter Sleep mode. |
Key Features
| Feature | Design Value |
|---|---|
| Differential sampling architecture | Simultaneous AIN+/AIN– sampling eliminates timing skew and enables >80 dB CMRR up to 100 MHz for noise-immune sensor interfacing. |
| Low-power Sleep mode | 4 µA quiescent current (13 µW) with 2 ms VREF wake-up settling-ideal for duty-cycled portable instrumentation. |
| 16-cycle SPI-compatible interface | Standard 3-wire protocol (CONV/SCK/SDO) with no CS pin required; compatible with microcontrollers lacking dedicated SPI peripherals. |
| Internal 2.5 V reference | Factory-trimmed ±15 ppm/°C bandgap; eliminates external reference component count while supporting overdrive for enhanced accuracy. |
| Small-footprint MSOP package | 10-lead 3 mm × 3 mm MSOP with exposed thermal pad-enables high-density PCB layouts in space-constrained industrial modules. |
Applications
| Motor Control Feedback | Data Acquisition System |
|---|---|
|
Use Scenario: Real-time current and voltage sensing in 3-phase inverter drives for servo and BLDC motors. IC Role / Device Role / Timing Role: High-speed differential ADC capturing synchronized phase currents with 39 ns acquisition time and 3.5 Msps throughput. Use Value: Enables precise field-oriented control (FOC) by resolving sub-LSB current ripple without external amplifiers or anti-alias filters. |
Use Scenario: Modular rack-mounted DAQ unit acquiring multi-channel analog sensor data in factory automation. IC Role / Device Role / Timing Role: Channel-sampling ADC with 80 dB CMRR rejecting ground-borne noise across distributed I/O modules. Use Value: Eliminates isolation amplifiers and reduces BOM cost while maintaining 74.1 dB SINAD for 16-bit-equivalent effective resolution. |
| Uninterruptible Power Supply | RFID Reader Signal Chain |
|
Use Scenario: Input/output voltage and battery monitoring in line-interactive UPS with fast transient response. IC Role / Device Role / Timing Role: Bipolar-input ADC measuring ±1.25 V differential signals from isolated shunt amplifiers during AC line switchover. Use Value: Supports seamless transfer switching by capturing 100+ samples per half-cycle of 50/60 Hz mains with <1 µs aperture jitter. |
Use Scenario: Baseband signal digitization in UHF RFID readers decoding backscattered tag responses. IC Role / Device Role / Timing Role: Low-noise ADC sampling demodulated envelope at 3.5 Msps to resolve narrow pulse widths in EPC Gen2 protocols. Use Value: Achieves 86 dB SFDR at 100 kHz, enabling reliable detection of weak tag signals amid reader self-interference. |
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 |
|---|---|---|---|
| ADS8860IRGET | 16-bit, 1 Msps, SPI interface, 2.5 V supply only; no internal reference; requires external REF. | Higher resolution but lower speed; suited for precision DC/low-frequency measurements, not real-time motor control. | Select when 16-bit static accuracy outweighs 3.5 Msps throughput and internal reference convenience. |
| AD7980BRMZ | 16-bit, 1 Msps, pseudo-differential input (single-ended AIN+ with AIN– = COM); no Sleep mode; 2.5 V internal ref. | Lacks true differential input and low-power Sleep state; higher power (7 mW active) limits portable use. | Choose for cost-sensitive, non-battery applications where common-mode noise is minimal and 1 Msps suffices. |
Compared with ADS8860IRGET and AD7980BRMZ, the LTC2356IMSE-14#PBF uniquely combines 14-bit resolution, 3.5 Msps speed, true differential input, 80 dB CMRR, and 4 µA Sleep mode in a 10-lead MSOP-making it optimal for compact, noise-immune, battery-aware industrial data capture.
Availability
LTC2356IMSE-14#PBF is available at Aetrix Electronics and suitable for high-speed data acquisition systems, multiphase motor control feedback loops, and uninterruptible power supply monitoring requiring stable component supply across industrial temperature ranges.
Supply support for LTC2356IMSE-14#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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors.
The LTC2356 family was designed for high-speed, low-power, differential-sampling applications in portable test equipment, industrial PLCs, and energy-efficient motor drives-emphasizing noise immunity, small size, and ease of integration.
FAQ
What is the operating temperature range for the LTC2356IMSE-14#PBF?
The LTC2356IMSE-14#PBF is rated for industrial temperature operation from –40°C to +85°C. This range is confirmed in the Order Information table and applies to all electrical specifications unless otherwise noted. The device uses the "I" grade marking and is packaged in a 10-lead MSOP with exposed thermal pad for reliable thermal performance across this full range.
Does the LTC2356IMSE-14#PBF require an external reference voltage?
No, the LTC2356IMSE-14#PBF includes a factory-trimmed 2.5 V internal bandgap reference (Pin 3, VREF) with ±15 ppm/°C tempco. It can operate fully autonomously with this reference. However, Pin 3 supports overdrive with an external 2.55 V to 3.3 V reference if higher initial accuracy or custom scaling is needed-no external buffer is required.
How does the Sleep mode of the LTC2356IMSE-14#PBF activate and recover?
Sleep mode activates after four or more CONV pulses while SCK is held static (high or low). It draws just 4 µA (13 µW). Recovery requires one or more SCK pulses; the internal 2.5 V reference settles in 2 ms (with 10 µF bypass cap), after which valid conversions resume. This sequence is explicitly defined in the Pin Functions section.
What is the absolute maximum analog input voltage range for the LTC2356IMSE-14#PBF?
Each analog input (AIN+ and AIN–) must remain within 0 V to VDD (3.3 V) at all times. The differential input range is ±1.25 V (i.e., AIN+ – AIN– ∈ [–1.25 V, +1.25 V]). Exceeding either limit causes code clamping: difference > +1.25 V yields 0x3FFF; < –1.25 V yields 0x0000. These limits are specified in the Analog Input section under VIN and VCM.
Is the LTC2356IMSE-14#PBF pin-compatible with the LTC2356IMSE-12#PBF?
Yes-the LTC2356IMSE-14#PBF and LTC2356IMSE-12#PBF share identical 10-lead MSOP packaging, pinout, supply requirements, timing interface, and functional block diagram. They differ only in resolution (14-bit vs. 12-bit), resulting in different LSB size (152 µV vs. 610 µV), SINAD (74.1 dB vs. 71.1 dB), and INL/DNL specs. No PCB change is needed for migration.
LTC2356IMSE-14#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):
- 3.5M
- 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:
- 3.1V ~ 3.6V
- Voltage - Supply, Digital:
- 3.1V ~ 3.6V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 10-MSOP-EP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2356IMSE-14#PBF FAQ
1.How can I place an order for LTC2356IMSE-14#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2356IMSE-14#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 LTC2356IMSE-14#PBF reliable?
The price and inventory of LTC2356IMSE-14#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2356IMSE-14#PBF is usually 5 days.
3.What payment methods are accepted for LTC2356IMSE-14#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2356IMSE-14#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2356IMSE-14#PBF?
LTC2356IMSE-14#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2356IMSE-14#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 LTC2356IMSE-14#PBF?
For technical support, including LTC2356IMSE-14#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2356IMSE-14#PBF requirements.
6.How does Aetrix verify that LTC2356IMSE-14#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2356IMSE-14#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 LTC2356IMSE-14#PBF meets industry standards.
7.What is the process for return or replacement of LTC2356IMSE-14#PBF?
All LTC2356IMSE-14#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2356IMSE-14#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 LTC2356IMSE-14#PBF part is unused and in its original packaging.
Return procedure for LTC2356IMSE-14#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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