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Analog Devices Inc. LTC2353HLX-16#PBF
- Part No.:
- LTC2353HLX-16#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-LQFP
- Datasheet:
-
LTC2353HLX-16#PBF.pdf
- Description:
- IC ADC 16BIT SAR 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:250
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Product details
Overview
LTC2353HLX-16#PBF from Analog Devices (formerly Linear Technology) is a 16-bit, dual-channel simultaneous-sampling SAR ADC with buffered differential inputs, ±10.24V input range, 550ksps per channel throughput, and 94.2dB SNR. It operates from ±15V analog supplies and 5V digital supply, features SoftSpan™ configurable input ranges, and targets high-voltage industrial data acquisition systems requiring wide common-mode tolerance and rail-to-rail overdrive capability.
For engineers reviewing the LTC2353HLX-16#PBF datasheet, LTC2353HLX-16#PBF pinout, LTC2353HLX-16#PBF application, or LTC2353HLX-16#PBF equivalent, key selection criteria include its picoamp-input leakage (500pA max at 85°C), 124dB CMRR at 200Hz, ±1LSB INL over ±10.24V range, SPI/LVDS interface flexibility, and –40°C to +125°C extended temperature grade.
Technical Context
The LTC2353HLX-16#PBF implements a true simultaneous sampling architecture using two independent SAR cores with integrated analog input buffers, enabling precise phase-matched digitization of high-voltage differential signals across both channels without inter-channel skew. Its SoftSpan™ configuration allows per-conversion selection among eight input ranges-including ±10.24V, 0V–10.24V, ±5.12V, and 0V–5.12V-using internal 4.096V reference and buffer.
It supports dual serial interfaces: pin-selectable CMOS (1.8V–5V OVDD) with 1- or 2-lane output, and LVDS mode for noise-immune high-speed data transfer. Internal conversion clock eliminates cycle latency, and rail-to-rail input overdrive tolerance ensures robustness against transient excursions beyond supply rails without corruption of adjacent channel conversions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with guaranteed no missing codes-ensures full dynamic range utilization in precision measurement. |
| Sampling Rate | 550ksps per channel (dual-channel), 800ksps when single-channel enabled-supports real-time monitoring of fast transients. |
| INL Error | ±1 LSB max over ±10.24V range-enables accurate absolute voltage measurement without calibration. |
| SNR | 94.2dB typical at 2kHz input-delivers >15.6 effective bits for low-noise sensor interfacing. |
| Input Leakage | 500pA max at 85°C (H-grade)-minimizes signal path error in high-impedance sensor applications. |
| CMRR | 124dB typical at 200Hz-rejects common-mode noise in noisy industrial environments. |
| Power Dissipation | 162mW typical at 550ksps, 2-channel mode-balances performance and thermal management in dense layouts. |
| Operating Temp | –40°C to +125°C-qualified for under-hood automotive, power converter control, and harsh-environment PLCs. |
Pinout & Package
48-lead (7mm × 7mm) plastic LQFP package (LX) with exposed pad for thermal dissipation; RoHS-compliant and lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN0+, IN0– IN1+, IN1– | Differential analog inputs (Channel 0 & 1) | Buffered, picoamp-input pins supporting ±10.24V common-mode range up to VCC–VEE; tolerate rail-to-rail overdrive. |
| VCC, VEE | Analog supply rails | Support ±15V operation (7.5V to 38V difference); enable direct connection to industrial ±12V/±15V power domains. |
| VDD, OVDD | Digital core & I/O supply | VDD = 4.75–5.25V for logic; OVDD = 1.71–5.25V (CMOS) or 2.375–5.25V (LVDS) sets interface voltage level. |
| REFBUF, REFIN | Reference buffer output & input | REFBUF provides 4.096V buffered reference; REFIN accepts external 1.25–2.2V reference or disables internal buffer. |
| CS, CNV, BUSY, SDO0/SDO1, SCKI, SCKO, SDI | Digital interface control & data | Supports SPI-compatible CMOS or differential LVDS I/O; CNV initiates conversion; BUSY indicates active conversion. |
| PD | Power-down control | Active-high signal reduces current to <1μA in power-down mode-critical for low-power wake-up architectures. |
Key Features
| Feature | Design Value |
|---|---|
| Per-channel SoftSpan™ input configuration | Eight selectable ranges (±10.24V, 0–10.24V, ±5.12V, etc.) programmable per conversion-eliminates external gain switching in multi-range systems. |
| Integrated reference & buffer | 4.096V buffered reference with ±20ppm/°C tempco-removes need for external precision reference and driver op-amp. |
| Simultaneous sampling with matched aperture | 150ps aperture delay matching between channels-preserves phase integrity for power quality analysis and motor control. |
| Rail-to-rail input overdrive tolerance | Withstands ±(VCC–VEE) differential overvoltage without latchup or conversion corruption-enhances system reliability in fault conditions. |
| Low input leakage (500pA @ 85°C) | Enables direct connection to high-Z sources (e.g., piezoelectric sensors, RTD bridges) without signal degradation. |
| 124dB CMRR at 200Hz | Rejects 50/60Hz line noise and switching regulator ripple in industrial plant-floor environments. |
Applications
| Programmable Logic Controllers | Industrial Process Control |
|---|---|
Use Scenario: Digitizing multiple 4–20mA current loop outputs and ±10V analog sensor signals in modular PLC backplanes. IC Role / Device Role / Timing Role: Dual-channel simultaneous ADC captures synchronized voltage/current measurements for closed-loop PID execution at 1ms intervals. Use Value: SoftSpan™ range selection eliminates external multiplexing and scaling circuitry; 124dB CMRR suppresses ground-loop noise in distributed I/O cabinets. | Use Scenario: Monitoring temperature, pressure, and flow in chemical reactor control systems with stringent safety and accuracy requirements. IC Role / Device Role / Timing Role: High-precision front-end digitizer for redundant sensor pairs, feeding safety-critical DCS controllers. Use Value: ±1LSB INL and no missing codes ensure traceable metrology compliance; –40°C to +125°C rating supports operation near exothermic reaction zones. |
| Power Line Monitoring | Test and Measurement |
Use Scenario: Capturing synchronized voltage and current waveforms on 3-phase AC distribution panels for harmonic and PQ analysis. IC Role / Device Role / Timing Role: Simultaneous sampling ADC acquiring phase-aligned line voltage and CT secondary signals at 550ksps. Use Value: 150ps aperture matching preserves phase accuracy for IEEE 1459-compliant power calculations; 94.2dB SNR enables >15-bit ENOB at 50/60Hz. | Use Scenario: Embedded digitizer in portable power analyzers and automated test equipment requiring calibrated DC/AC performance. IC Role / Device Role / Timing Role: Precision acquisition engine supporting auto-ranging, self-calibration, and multi-channel correlation. Use Value: Internal 4.096V reference and buffer reduce BOM count and calibration drift; LVDS interface minimizes EMI in high-density instrument backplanes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-precision dual-channel SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7606C-16 | 16-bit, 8-channel, 1MSPS, internal reference, parallel/serial interface; no LVDS; 100kΩ input impedance vs LTC2353's buffered picoamp input. | Targets higher channel count, lower cost systems where simultaneous 8-channel capture is needed but ±10.24V common-mode range and rail-to-rail overdrive are not required. | Select AD7606C-16 when consolidating more than two analog inputs per device and operating within 0°C–+85°C ambient. |
| ADS8688 | 16-bit, 8-channel, 500ksps, integrated PGA, 2.5V reference; unbuffered inputs; 100kΩ input impedance; SPI-only interface. | Designed for multi-range sensor conditioning with on-chip programmable gain; lacks simultaneous sampling and high common-mode rejection. | Choose ADS8688 for mixed-signal sensor nodes needing on-the-fly gain adjustment but not phase-coherent dual-channel acquisition. |
Compared with AD7606C-16 and ADS8688, the LTC2353HLX-16#PBF uniquely delivers simultaneous dual-channel sampling with ±10.24V common-mode range, picoamp buffered inputs, and LVDS interface-making it optimal for high-fidelity power quality and industrial control applications demanding phase integrity and rugged input handling.
Availability
LTC2353HLX-16#PBF is available at Aetrix Electronics and suitable for programmable logic controllers, industrial process control systems, and power line monitoring equipment requiring stable component supply across extended temperature and long product lifecycles.
Supply support for LTC2353HLX-16#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 LTC2353HLX-16#PBF belongs to ADI's precision data acquisition portfolio, designed specifically for high-voltage, high-accuracy industrial instrumentation where simultaneous sampling, wide input range, and robust noise immunity are critical.
FAQ
What is the maximum input common-mode voltage range supported by the LTC2353HLX-16#PBF?
The LTC2353HLX-16#PBF supports a 30VP-P common-mode range, operating from VEE + 4V to VCC – 4V. With typical ±15V supplies (VCC = +15V, VEE = –15V), this yields a usable common-mode range of –11V to +11V-enabling direct digitization of signals referenced to non-ground potentials in industrial systems.
Does the LTC2353HLX-16#PBF require an external reference, or does it include an internal one?
The LTC2353HLX-16#PBF integrates a precision 4.096V reference buffer (REFBUF) and internal 2.048V bandgap reference (REFIN). It operates fully autonomously with the internal reference enabled; REFIN can accept an external 1.25–2.2V source only if the internal buffer is disabled, making external references optional-not required-for most applications.
How does the SoftSpan™ feature work on the LTC2353HLX-16#PBF, and what input ranges are available?
The SoftSpan™ feature on the LTC2353HLX-16#PBF allows per-conversion software selection of eight input ranges via control register bits: ±10.24V, 0–10.24V, ±5.12V, 0–5.12V, ±12.5V, 0–12.5V, ±6.25V, and 0–6.25V. This eliminates external hardware reconfiguration and enables adaptive range optimization during runtime-e.g., switching between bipolar motor current sensing and unipolar temperature monitoring.
What is the input leakage current specification for the LTC2353HLX-16#PBF at its maximum operating temperature?
At its maximum operating temperature of +125°C, the LTC2353HLX-16#PBF specifies a maximum analog input leakage current of 12nA (12,000pA) per pin. At +85°C-the upper limit for standard industrial grade-the spec tightens to 500pA, confirming its suitability for high-impedance sensor interfaces in thermally demanding environments.
Can the LTC2353HLX-16#PBF operate with only one channel enabled, and what throughput improvement does that provide?
Yes, the LTC2353HLX-16#PBF supports single-channel operation, increasing maximum sampling rate from 550ksps to 800ksps per enabled channel. Disabling Channel 1 reduces conversion time and digital interface load, improving real-time responsiveness in applications like fast-loop motor control or burst-mode data logging where only one high-speed signal path is needed.
LTC2353HLX-16#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- SoftSpan™
- Package/Case:
- 48-LQFP
- Packaging:
- Tray
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 550k
- Number of Inputs:
- 2
- Input Type:
- Differential, Pseudo-Differential, Single Ended
- Data Interface:
- LVDS - Serial, SPI
- Configuration:
- S/H-MUX-ADC
- Ratio - S/H:ADC:
- 2:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- Internal
- Voltage - Supply, Analog:
- 7.5V ~ 38V
- Voltage - Supply, Digital:
- 4.75V ~ 5.25V
- Features:
- Simultaneous Sampling
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 48-LQFP (7x7)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2353HLX-16#PBF FAQ
1.How can I place an order for LTC2353HLX-16#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2353HLX-16#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 LTC2353HLX-16#PBF reliable?
The price and inventory of LTC2353HLX-16#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2353HLX-16#PBF is usually 5 days.
3.What payment methods are accepted for LTC2353HLX-16#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2353HLX-16#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2353HLX-16#PBF?
LTC2353HLX-16#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2353HLX-16#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 LTC2353HLX-16#PBF?
For technical support, including LTC2353HLX-16#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2353HLX-16#PBF requirements.
6.How does Aetrix verify that LTC2353HLX-16#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2353HLX-16#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 LTC2353HLX-16#PBF meets industry standards.
7.What is the process for return or replacement of LTC2353HLX-16#PBF?
All LTC2353HLX-16#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2353HLX-16#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 LTC2353HLX-16#PBF part is unused and in its original packaging.
Return procedure for LTC2353HLX-16#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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