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Analog Devices Inc. LTC2356CMSE-14#PBF
- Part No.:
- LTC2356CMSE-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:
-
LTC2356CMSE-14#PBF.pdf
- Description:
- IC ADC 14BIT SAR 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,110
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Product details
Overview
LTC2356CMSE-14#PBF from Analog Devices (formerly Linear Technology) is a 14-bit, 3.5 Msps serial successive-approximation ADC with differential inputs, 3.3V single-supply operation, ±1.25V bipolar input range, and 74.1 dB SINAD at 100 kHz - designed for high-speed portable data acquisition systems requiring low power and compact layout.
For engineers reviewing the LTC2356CMSE-14#PBF datasheet, LTC2356CMSE-14#PBF pinout, LTC2356CMSE-14#PBF application, or LTC2356CMSE-14#PBF equivalent, key selection criteria include its 10-lead MSOP package, 80 dB common-mode rejection at 1 MHz, Sleep mode (13 µW), Nap mode (4 mW), and SPI-compatible 3-wire serial interface timing compatibility with standard microcontrollers.
Technical Context
The LTC2356CMSE-14#PBF employs a fully differential sample-and-hold front-end 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 (±15 ppm/°C tempco) supports overdrive with external references from 2.55 V to VDD.
Conversion is triggered on the rising edge of CONV; output data appears on SDO over 16 clock cycles following that edge. With 63 MHz SCK and two extra clock cycles between conversions, the full 3.5 Msps rate is sustained - confirming tight timing control for real-time embedded signal capture.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit with no missing codes - guarantees monotonic transfer function for precision measurement integrity. |
| Sampling Rate | 3.5 Msps - enables real-time capture of signals up to 1.75 MHz Nyquist bandwidth. |
| SINAD | 74.1 dB at 100 kHz - corresponds to ~13.7 effective bits, critical for dynamic signal fidelity in instrumentation. |
| Power Dissipation | 18 mW active, 4 mW Nap, 13 µW Sleep - supports battery-powered or thermally constrained designs. |
| Common-Mode Rejection | 80 dB at 1 MHz - eliminates ground-loop noise and allows direct sensor interfacing without isolation. |
| Analog Input Range | ±1.25 V differential (AIN+ – AIN–), 0 V to VDD common-mode - compatible with single-supply op-amp drivers and AC-coupled sensors. |
| Reference | Internal 2.5 V bandgap (±15 ppm/°C), overdrivable with 2.55 V–VDD external source - enables flexible accuracy vs. power trade-offs. |
Pinout & Package
Package: 10-lead plastic MSOP (MSE) with exposed pad (Pin 11), θJA = 40°C/W, TJMAX = 125°C. Exposed pad must be soldered to PCB ground plane for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (AIN+) | Noninverting analog input | Differential input node; accepts 0 V to VDD common-mode voltage with ±1.25 V swing relative to AIN–. |
| 2 (AIN–) | Inverting analog input | Differential input node; complements AIN+; both sampled simultaneously for true differential acquisition. |
| 3 (VREF) | Reference buffer output | 2.5 V internal reference; bypass with ≥10 µF ceramic capacitor; supports external overdrive from 2.55 V to VDD. |
| 4, 5, 6, 11 (GND) | Ground terminals + exposed pad | All must connect directly to solid analog ground plane; carries analog, digital, and return currents - critical for noise immunity. |
| 7 (VDD) | 3.3 V supply input | Single supply for entire device; requires local 10 µF + 0.1 µF ceramic bypassing near Pins 6–7. |
| 8 (SDO) | Three-state serial data output | 2's complement 14-bit word; valid after 16 SCK edges post-CONV↑; Hi-Z when SCK inactive. |
| 9 (SCK) | Serial clock input | TTL/3.3 V CMOS-compatible; rising edge clocks data out and advances conversion state machine. |
| 10 (CONV) | Convert start input | Rising edge initiates sampling and conversion; multiple pulses with SCK held static enter Nap/Sleep modes. |
Key Features
| Feature | Design Value |
|---|---|
| Differential input architecture | Enables rejection of common-mode noise up to 80 dB at 1 MHz - essential for industrial sensor interfaces with long cables. |
| Low-power Sleep/Nap modes | Reduces quiescent current to 4 µA (Sleep) or 1.1 mA (Nap) - extends battery life in intermittent-sampling applications like portable meters. |
| Internal 2.5 V reference with overdrive capability | Eliminates external reference IC cost and board space; overdrive support allows system-level calibration or higher-accuracy external references. |
| 3-wire SPI-compatible interface | Requires only CONV, SCK, and SDO - simplifies MCU GPIO usage and avoids MISO/MOSI complexity in resource-constrained controllers. |
| 10-lead MSOP package with exposed pad | 0.85 mm pitch, 3 mm × 3 mm footprint - enables high-density PCB layouts in space-constrained portable equipment. |
Applications
| Portable Data Acquisition | Multiphase Motor Control |
|---|---|
Use Scenario: Battery-powered handheld oscilloscopes and waveform analyzers capturing transient signals in field service environments. IC Role / Device Role / Timing Role: Primary analog-to-digital converter acquiring synchronized voltage/current samples across multiple channels at 3.5 Msps. Use Value: 74.1 dB SINAD and 80 dB CMRR ensure clean digitization of noisy motor-phase waveforms without external filtering or isolation. |
Use Scenario: Real-time current sensing in servo drives with three-phase current feedback loops requiring sub-microsecond latency. IC Role / Device Role / Timing Role: High-speed ADC sampling phase currents differentially to reject PWM switching noise and ground bounce. Use Value: 39 ns acquisition time and 50 MHz full-power bandwidth enable accurate capture of fast current transients during IGBT switching events. |
| Uninterruptible Power Supplies (UPS) | RFID Reader Signal Chain |
Use Scenario: Line-monitoring and battery-voltage tracking in online UPS units where continuous AC waveform analysis ensures seamless transfer. IC Role / Device Role / Timing Role: ADC digitizing isolated AC mains and DC bus voltages for RMS calculation, harmonic analysis, and fault detection. Use Value: ±1.25 V bipolar input range with 3.3 V single supply simplifies front-end scaling for ±120 VAC sensing via resistive dividers. |
Use Scenario: Baseband signal conditioning in UHF RFID readers decoding backscattered tag responses amid strong RF interference. IC Role / Device Role / Timing Role: Digitizing filtered analog envelope signals from RF demodulators before DSP-based tag ID extraction. Use Value: 14-bit resolution and 72.3 dB SINAD at 1.4 MHz support reliable amplitude discrimination of weak tag returns in noisy EPC Gen2 environments. |
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, 2.5 V supply, SPI interface, no internal reference - requires external REF and level-shifting for 3.3 V systems. | Better DC accuracy (±0.5 LSB INL), lower speed - suited for precision DC/low-frequency measurements, not real-time 3.5 Msps capture. | Select when resolution > speed; avoid if 3.5 Msps throughput or integrated reference is required. |
| AD7980BRMZ | 16-bit, 1 Msps, 2.5 V internal reference, 3-wire SPI, 10-lead MSOP - same package but slower, higher power (7 mW active). | Higher resolution but half the sampling rate and no Sleep mode - fits medium-speed instrumentation, not portable high-throughput systems. | Choose for improved static accuracy at cost of speed and power efficiency; verify thermal limits in compact enclosures. |
Compared with ADS8860IRGET and AD7980BRMZ, the LTC2356CMSE-14#PBF uniquely balances 14-bit resolution, 3.5 Msps speed, 13 µW Sleep power, and integrated 2.5 V reference in a 10-lead MSOP - making it optimal for size- and power-constrained real-time acquisition where 16-bit DC precision is secondary to throughput and autonomy.
Availability
LTC2356CMSE-14#PBF is available at Aetrix Electronics and suitable for portable data acquisition, multiphase motor control, uninterruptible power supplies, RFID reader signal chains, and multiplexed sensor monitoring requiring stable component supply across production lifecycles.
Supply support for LTC2356CMSE-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 technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC2356 family was developed by Linear Technology (acquired by ADI in 2017) to deliver high-speed, low-power SAR ADCs in ultra-small packages for portable and energy-sensitive instrumentation applications.
FAQ
What is the operating temperature range for the LTC2356CMSE-14#PBF?
The LTC2356CMSE-14#PBF is specified for commercial temperature range operation from 0°C to 70°C. This is confirmed by the "C" grade designation in the part number and the Order Information table, which lists LTC2356CMSE-14#PBF under 0°C to 70°C. Industrial-grade variants (e.g., LTC2356IMSE-14#PBF) extend to –40°C to 85°C.
Does the LTC2356CMSE-14#PBF require an external reference voltage?
No, the LTC2356CMSE-14#PBF includes a factory-trimmed 2.5 V internal bandgap reference (Pin 3, VREF) with ±15 ppm/°C tempco. It can operate fully self-contained with proper 10 µF bypassing. However, Pin 3 supports overdrive with an external reference from 2.55 V to VDD if higher accuracy or system-level calibration is needed.
How does the Sleep mode function on the LTC2356CMSE-14#PBF?
Sleep mode on the LTC2356CMSE-14#PBF reduces supply current to 4 µA and power dissipation to 13 µW. It is entered by applying four or more CONV pulses while SCK is held static (high or low). Wake-up occurs on the first SCK edge, with VREF settling in 2 ms - confirmed in Timing Characteristics Note 14 and Power Requirements table.
What is the absolute maximum input voltage range for AIN+ and AIN– on the LTC2356CMSE-14#PBF?
The absolute voltage at AIN+ and AIN– must remain within –0.3 V to (VDD + 0.3 V), per Absolute Maximum Ratings. With VDD = 3.3 V, this means –0.3 V to 3.6 V. The functional differential input range is ±1.25 V (i.e., AIN+ – AIN–), while common-mode voltage may span 0 V to VDD - both specified in Analog Input section and Pin Functions.
Can the LTC2356CMSE-14#PBF interface directly with a 5 V microcontroller SPI port?
No - the LTC2356CMSE-14#PBF is a 3.3 V–only device. Its digital inputs (CONV, SCK) tolerate up to VDD + 0.3 V = 3.6 V, and outputs (SDO) swing from 0 V to VDD = 3.3 V. Direct connection to a 5 V MCU SPI port risks damage and logic misreads; level translation (e.g., TXB0104) or 3.3 V–compatible MCU is required.
LTC2356CMSE-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:
- 0°C ~ 70°C
- Supplier Device Package:
- 10-MSOP-EP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2356CMSE-14#PBF FAQ
1.How can I place an order for LTC2356CMSE-14#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2356CMSE-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 LTC2356CMSE-14#PBF reliable?
The price and inventory of LTC2356CMSE-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 LTC2356CMSE-14#PBF is usually 5 days.
3.What payment methods are accepted for LTC2356CMSE-14#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2356CMSE-14#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2356CMSE-14#PBF?
LTC2356CMSE-14#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2356CMSE-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 LTC2356CMSE-14#PBF?
For technical support, including LTC2356CMSE-14#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2356CMSE-14#PBF requirements.
6.How does Aetrix verify that LTC2356CMSE-14#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2356CMSE-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 LTC2356CMSE-14#PBF meets industry standards.
7.What is the process for return or replacement of LTC2356CMSE-14#PBF?
All LTC2356CMSE-14#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2356CMSE-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 LTC2356CMSE-14#PBF part is unused and in its original packaging.
Return procedure for LTC2356CMSE-14#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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