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Analog Devices Inc. LTC2355IMSE-14#PBF
- Part No.:
- LTC2355IMSE-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:
-
LTC2355IMSE-14#PBF.pdf
- Description:
- IC ADC 14BIT SAR 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,044
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Product details
Overview
LTC2355IMSE-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, 74.2 dB SINAD at 100 kHz, and 80 dB common-mode rejection. It delivers high-speed precision data acquisition in portable instrumentation and motor control systems where low power and small size are critical.
For engineers reviewing the LTC2355IMSE-14#PBF datasheet, LTC2355IMSE-14#PBF pinout, LTC2355IMSE-14#PBF application, or LTC2355IMSE-14#PBF equivalent, key selection factors include its 3.5 Msps sampling rate, 14-bit resolution with no missing codes, 13 µW Sleep mode power, MSOP-10 package footprint, and SPI-compatible 3-wire serial interface timing compatibility with microcontrollers and FPGAs.
Technical Context
The LTC2355IMSE-14#PBF employs a fully differential sample-and-hold front-end with 50 MHz full-power bandwidth and 39 ns acquisition time, enabling accurate capture of fast transient signals. Its internal 2.5 V bandgap reference (±15 ppm/°C tempco) supports unipolar 0 V to 2.5 V differential input range while allowing overdrive with external references from 2.55 V to VDD.
Conversion is triggered by a rising edge on CONV, with result output via SDO synchronized to SCK over 16 clock cycles. Nap (4 mW) and Sleep (13 µW) shutdown modes are entered via specific CONV pulse sequences without SCK activity, supporting dynamic power management in battery-powered systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit with no missing codes - guarantees monotonic transfer function and full-scale linearity for precision measurement applications. |
| Sampling Rate | 3.5 Msps - enables real-time capture of signals up to 1.75 MHz (Nyquist), suitable for multiphase motor current sensing and RF IF sampling. |
| SINAD | 74.2 dB at 100 kHz - corresponds to ~12.7 effective bits, ensuring high-fidelity digitization in communications and data acquisition. |
| Power Consumption | 18 mW active, 4 mW Nap, 13 µW Sleep - allows thermal-constrained PCB layouts and extends battery life in portable test equipment. |
| Common-Mode Rejection | 80 dB at 1 MHz - suppresses ground-loop noise and EMI in industrial sensor interfaces with long cable runs. |
| Input Range | 0 V to 2.5 V differential (unipolar), 0 V to VDD common-mode - simplifies single-supply signal conditioning without level-shifting circuitry. |
| Reference | Internal 2.5 V ±15 ppm/°C bandgap - eliminates external reference component count; overdrivable with 2.55 V–3.3 V external sources for improved accuracy. |
Pinout & Package
Package: 10-lead plastic MSOP (MSE), exposed pad (Pin 11) tied to GND. Requires soldering of exposed pad to solid analog ground plane for thermal and noise 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 relative to AIN–. |
| 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+. |
| VREF | Internal reference output / external reference input | 2.5 V buffered reference output; bypassed with 10 µF capacitor; accepts 2.55 V–3.3 V external reference for enhanced stability. |
| GND (Pins 4, 5, 6, 11) | Analog/digital ground and thermal pad | Multiple ground connections reduce impedance paths for analog return currents and digital switching noise; exposed pad must be soldered to PCB ground plane. |
| VDD | 3.3 V supply input | Single supply for entire device; requires local 10 µF + 0.1 µF ceramic bypassing close to Pin 7 and Pin 6. |
| SDO | Three-state serial data output | Outputs 14-bit conversion result (MSB first) during 16 SCK cycles after CONV rising edge; tri-states when not active to prevent bus contention. |
| SCK | Serial clock input | TTL/CMOS-compatible clock (≤3.3 V); rising edge advances conversion state machine and clocks out data; wakes device from Sleep mode. |
| CONV | Convert start input | Rising-edge-triggered command; initiates sampling and conversion; sequence of pulses (with SCK static) enters Nap or Sleep mode. |
Key Features
| Feature | Design Value |
|---|---|
| Differential input architecture | Enables rejection of common-mode noise up to 80 dB at 1 MHz, eliminating need for external instrumentation amplifiers in noisy industrial environments. |
| Low-power shutdown modes | 13 µW Sleep mode reduces system standby power by >99% vs active mode, critical for always-on sensor nodes and portable diagnostics. |
| Internal 2.5 V reference | Factory-trimmed ±15 ppm/°C tempco eliminates external reference IC and associated layout complexity while maintaining 14-bit accuracy across –40°C to +85°C. |
| 3-wire SPI-compatible interface | Eliminates need for dedicated ADC controller logic; directly interfaces with standard microcontroller SPI peripherals using only CONV, SCK, and SDO lines. |
| MSOP-10 package | 2.5 mm × 3 mm footprint with exposed thermal pad supports high-density PCB layouts in space-constrained applications like handheld test gear and embedded motor drives. |
Applications
| Motor Phase Current Sensing | Portable Power Quality Analyzer |
|---|---|
Use Scenario: Real-time sampling of three-phase motor currents in variable-frequency drives for field-oriented control. IC Role / Device Role / Timing Role: High-speed differential ADC capturing isolated shunt voltage drops at 3.5 Msps with precise timing alignment across phases. Use Value: Enables accurate torque estimation and overcurrent protection with <100 ns aperture jitter and 74.2 dB SINAD at 1.4 MHz input frequency. | Use Scenario: Battery-powered monitoring of AC mains harmonics, THD, and RMS voltage/current in commercial buildings. IC Role / Device Role / Timing Role: Precision digitizer for anti-alias-filtered 50/60 Hz fundamental and up to 25th harmonic content. Use Value: Delivers 14-bit resolution and 86 dB SFDR to resolve sub-0.1% harmonic distortion levels without external dither or averaging. |
| RFID Reader Signal Chain | Multiplexed Industrial Sensor Hub |
Use Scenario: Digitizing backscatter-modulated carrier signals in UHF RFID readers operating at 860–960 MHz ISM band. IC Role / Device Role / Timing Role: IF-sampling ADC converting downconverted 1–10 MHz baseband waveforms with minimal phase mismatch between channels. Use Value: 50 MHz full-power bandwidth and matched AIN+/AIN– input paths ensure <0.1° phase error across 10 MHz bandwidth for coherent demodulation. | Use Scenario: Centralized acquisition of 16+ temperature, pressure, and strain sensors in factory automation PLCs. IC Role / Device Role / Timing Role: High-throughput ADC serving as core digitizer in time-division multiplexed analog front-end with programmable gain amplifiers. Use Value: 3.5 Msps throughput supports >200 kSPS per channel across 16 inputs, while Sleep mode cuts idle power to <15 µW per channel. |
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, 3.3 V supply, SPI interface; higher resolution but lower speed; no integrated reference. | Better DC accuracy for precision weigh scales; unsuitable for >1.5 MHz signal capture due to 1 Msps limit. | Select when absolute accuracy > resolution speed; requires external 2.5 V reference and additional decoupling. |
| MAX11198ETE+ | 14-bit, 3 Msps, 2.7–3.6 V supply, internal reference; 72.5 dB SINAD at 100 kHz; 12-lead TDFN package. | Slightly lower dynamic performance and 0.5 Msps slower; smaller 3 mm × 3 mm TDFN footprint. | Choose for tighter board area constraints where 3 Msps suffices and 1.7 dB SINAD margin is acceptable. |
Compared with ADS8860IRGET and MAX11198ETE+, the LTC2355IMSE-14#PBF uniquely balances 3.5 Msps speed, 74.2 dB SINAD, and 13 µW Sleep power in an MSOP-10 package-making it optimal for portable, multi-channel, high-fidelity acquisition where both bandwidth and battery life are design-critical.
Availability
LTC2355IMSE-14#PBF is available at Aetrix Electronics and suitable for motor control, portable instrumentation, and industrial sensor hub applications requiring stable component supply across extended temperature ranges (–40°C to +85°C).
Supply support for LTC2355IMSE-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. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, formed through the acquisition of Linear Technology in 2017.
The LTC2355 family was designed by Linear Technology specifically for high-speed, low-power, precision data acquisition in space- and energy-constrained systems-emphasizing differential input robustness, integrated reference stability, and minimal external component count.
FAQ
What is the maximum sampling rate of the LTC2355IMSE-14#PBF?
The LTC2355IMSE-14#PBF achieves a maximum sampling rate of 3.5 Msps under specified conditions: VDD = 3.3 V, SCK frequency ≥ 63 MHz, and two additional clock cycles allocated for acquisition between conversions. This rate is guaranteed over the full –40°C to +85°C operating temperature range and enables real-time capture of signals up to 1.75 MHz.
Does the LTC2355IMSE-14#PBF require an external reference voltage?
No, the LTC2355IMSE-14#PBF includes a factory-trimmed 2.5 V internal bandgap reference with ±15 ppm/°C tempco, sufficient for most 14-bit applications. However, the VREF pin can be overdriven with an external reference from 2.55 V to VDD to improve absolute accuracy or temperature stability-commonly used with precision references like LT6655.
How does the Sleep mode of the LTC2355IMSE-14#PBF operate?
Sleep mode in the LTC2355IMSE-14#PBF is activated by four or more CONV rising edges with SCK held static (high or low), reducing supply current to 13 µA and total power to 13 µW. Recovery requires one SCK pulse, after which VREF settles in 2 ms (with 10 µF load) before valid conversions resume-ideal for duty-cycled sensor wake-up architectures.
What is the analog input voltage range specification for the LTC2355IMSE-14#PBF?
The LTC2355IMSE-14#PBF supports a differential input range of 0 V to 2.5 V (unipolar) when using the internal reference. The absolute voltage at AIN+ and AIN– must each remain within 0 V to VDD (3.1 V to 3.6 V), and the differential difference must not exceed ±2.5 V to avoid saturation (all-zeros or all-ones output codes).
Can the LTC2355IMSE-14#PBF interface directly with a microcontroller SPI peripheral?
Yes, the LTC2355IMSE-14#PBF uses a 3-wire SPI-compatible serial interface (CONV, SCK, SDO) with MSB-first, 16-cycle data transfer synchronized to SCK rising edges. It requires no chip-select line and tri-states SDO when inactive-enabling direct connection to standard MCU SPI ports without level shifters or glue logic.
LTC2355IMSE-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:
- -
LTC2355IMSE-14#PBF FAQ
1.How can I place an order for LTC2355IMSE-14#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2355IMSE-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 LTC2355IMSE-14#PBF reliable?
The price and inventory of LTC2355IMSE-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 LTC2355IMSE-14#PBF is usually 5 days.
3.What payment methods are accepted for LTC2355IMSE-14#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2355IMSE-14#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2355IMSE-14#PBF?
LTC2355IMSE-14#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2355IMSE-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 LTC2355IMSE-14#PBF?
For technical support, including LTC2355IMSE-14#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2355IMSE-14#PBF requirements.
6.How does Aetrix verify that LTC2355IMSE-14#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2355IMSE-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 LTC2355IMSE-14#PBF meets industry standards.
7.What is the process for return or replacement of LTC2355IMSE-14#PBF?
All LTC2355IMSE-14#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2355IMSE-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 LTC2355IMSE-14#PBF part is unused and in its original packaging.
Return procedure for LTC2355IMSE-14#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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