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Analog Devices Inc. LTC2353CLX-16#PBF
- Part No.:
- LTC2353CLX-16#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-LQFP
- Datasheet:
-
LTC2353CLX-16#PBF.pdf
- Description:
- IC ADC 16BIT SAR 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:183
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Product details
Overview
LTC2353CLX-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 integrated 4.096V reference buffer - designed for high-voltage industrial data acquisition in power line monitoring and PLC systems.
For engineers reviewing the LTC2353CLX-16#PBF datasheet, LTC2353CLX-16#PBF pinout, LTC2353CLX-16#PBF application, or LTC2353CLX-16#PBF equivalent, key selection criteria include its per-channel SoftSpan™ programmable input ranges (±10.24V/0–10.24V/±5.12V/0–5.12V), 94.2dB SNR, 124dB CMRR, rail-to-rail overdrive tolerance, and dual LVDS/CMOS serial interface support.
Technical Context
The LTC2353CLX-16#PBF implements a successive approximation register (SAR) architecture with two independent analog front-ends, each featuring picoamp-input buffers and wide common-mode range (VEE + 4V to VCC – 4V). It supports true bipolar, fully differential, and unipolar signal drives without external level-shifting circuitry.
Its SoftSpan™ configuration allows per-conversion selection of eight input ranges across two channels, while internal conversion clocking eliminates cycle latency. The device operates from split analog supplies (VCC = +7.5V to +38V, VEE = –16.5V to 0V) and single digital supply (OVDD = 1.71V to 5.25V), with pin-selectable CMOS or LVDS serial output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - guarantees no missing codes and full 65,536-level quantization for precision measurement. |
| Sampling Rate | 550ksps per channel (dual-channel mode) - enables real-time capture of 50/60Hz power harmonics up to 11th order with oversampling margin. |
| INL (Max) | ±1 LSB at ±10.24V range - ensures end-point linearity critical for calibration-critical industrial sensor interfacing. |
| SNR (Typ) | 94.2dB - delivers >15.6 effective number of bits (ENOB) for high-fidelity digitization of low-noise analog signals. |
| CMRR (Typ) | 124dB at 200Hz - rejects common-mode interference in noisy plant-floor environments without external instrumentation amplifiers. |
| Input Leakage | 500pA max (C-grade, 85°C) - preserves signal integrity when interfacing high-impedance sources like piezoelectric sensors or voltage dividers. |
| Power Dissipation | 162mW typical (CMOS mode, 2-ch enabled) - enables thermally constrained designs in sealed industrial enclosures. |
Pinout & Package
48-lead (7mm × 7mm) plastic LQFP package (LX) with exposed pad for thermal management; RoHS-compliant, lead-free finish (#PBF).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN0+, IN0– IN1+, IN1– | Differential analog inputs (Ch0, Ch1) | Buffered picoamp-input pairs supporting ±10.24V common-mode range (VEE+4V to VCC–4V); tolerate rail-to-rail overdrive without damage. |
| VCC, VEE | Analog supply rails | Split supplies: VCC = +7.5V to +38V, VEE = –16.5V to 0V - enable direct connection to ±15V, ±12V, or asymmetric HV buses. |
| REFIN, REFBUF | Reference input/buffer output | REFIN accepts 1.25V–2.2V external reference; REFBUF provides 4.096V buffered output (2.5V–5V range when overdriven). |
| CS, CNV, BUSY, SDO0/SDO1, SCKI, SCKO, SDI | Digital control & serial I/O | Pin-selectable CMOS (1.8V–5V) or LVDS interface; supports 1- or 2-lane CMOS output for flexible bus-width optimization. |
| PD | Power-down control | Active-high signal reduces current to <2μA (C/I-grade) - enables low-power sleep modes between acquisition bursts. |
Key Features
| Feature | Design Value |
|---|---|
| Per-channel SoftSpan™ input ranges | Independent selection of ±10.24V, 0–10.24V, ±5.12V, or 0–5.12V per conversion - eliminates need for external gain-switching circuitry in multi-range systems. |
| Integrated reference buffer | 4.096V buffered output with 13kΩ input impedance and 1.3mA drive capability - powers external circuits without loading internal reference. |
| Rail-to-rail input overdrive tolerance | Withstands ±(VCC–VEE) differential overvoltage without latchup or performance degradation - simplifies anti-aliasing filter and protection design. |
| 124dB CMRR at 200Hz | Rejects noise coupled into long sensor cables in motor drives or switchgear - avoids dedicated instrumentation amplifier stages. |
| Simultaneous sampling & aperture matching | 150ps aperture delay matching between channels - enables accurate phase-difference measurement in polyphase power analysis. |
Applications
| Power Line Monitoring | Programmable Logic Controllers |
|---|---|
Use Scenario: Real-time acquisition of voltage/current waveforms on 3-phase AC distribution systems with harmonic analysis up to 3kHz. IC Role / Device Role / Timing Role: Dual-channel simultaneous sampling ADC capturing synchronized line voltage and neutral current with <150ps inter-channel skew. Use Value: Enables IEC 61000-4-30 Class A compliance via 94.2dB SNR and ±1LSB INL - directly resolves sub-0.1% THD measurements without post-processing correction. | Use Scenario: High-accuracy analog input module in modular PLC backplanes handling mixed-signal field transducers (4–20mA, ±10V, RTD). IC Role / Device Role / Timing Role: Precision ADC front-end with programmable SoftSpan™ ranges adapting to diverse sensor outputs without hardware reconfiguration. Use Value: Reduces BOM count by supporting ±10.24V, 0–10.24V, ±5.12V, and 0–5.12V ranges in one footprint - eliminates external PGA or level-shifters per channel. |
| Industrial Process Control | Test and Measurement Equipment |
Use Scenario: Closed-loop control of high-voltage actuators (e.g., piezoelectric valves, electrostatic chucks) requiring sub-mV resolution feedback. IC Role / Device Role / Timing Role: Low-leakage (500pA @ 85°C), high-CMRR ADC digitizing high-impedance sensor outputs in electrically noisy factory environments. Use Value: Maintains accuracy despite 124dB CMRR and 5pF input capacitance - prevents drift from EMI coupling into 10MΩ+ sensor circuits. | Use Scenario: Portable power quality analyzer capturing transient events (swells, sags, interruptions) with 550ksps sustained sampling. IC Role / Device Role / Timing Role: Low-latency SAR ADC with internal clock and no cycle latency - delivers deterministic timing for trigger-based capture windows. Use Value: Achieves 420ns full-scale settling time and 3psRMS aperture jitter - ensures <0.005% amplitude error on fast transients without external sample-hold. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel, high-voltage SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7606C-16 | 8-channel, 16-bit, 1MSPS, ±10V range; uses internal oscillator; no LVDS option; 100kΩ input impedance. | Higher channel count but fixed ±10V range; lacks SoftSpan™ flexibility and rail-to-rail overdrive tolerance. | Select when needing >2 channels or higher throughput; avoid if programmable input ranges or HV overvoltage robustness are required. |
| ADS8688 | 8-channel, 16-bit, 500ksps, ±10.24V range; SPI-only CMOS; 1MΩ input impedance; no integrated reference buffer. | Lower power (65mW), smaller QFN package; requires external reference and driver for high-Z sources. | Select for space-constrained, low-power designs where external reference buffering is acceptable; avoid for direct high-impedance sensor interfacing. |
Compared with AD7606C-16 and ADS8688, the LTC2353CLX-16#PBF uniquely combines per-channel SoftSpan™ range selection, integrated 4.096V reference buffer, and rail-to-rail overdrive tolerance - enabling simplified front-end design for multi-range, high-voltage industrial sensing without external components.
Availability
LTC2353CLX-16#PBF is available at Aetrix Electronics and suitable for power line monitoring, programmable logic controllers, and industrial process control requiring stable component supply across extended temperature and voltage operating conditions.
Supply support for LTC2353CLX-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 (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing ICs for precision measurement and control.
The LTC2353 family was designed specifically for high-voltage, simultaneous-sampling data acquisition in harsh industrial environments - emphasizing input flexibility, noise immunity, and system-level integration to reduce external component count.
FAQ
What is the operating temperature range for the LTC2353CLX-16#PBF?
The LTC2353CLX-16#PBF is rated for 0°C to 70°C operation (C-grade). Its absolute maximum junction temperature is 150°C, and thermal resistance θJA is 53°C/W in the 48-lead LQFP package. This range targets commercial and controlled industrial environments where ambient temperatures remain within specification limits.
Does the LTC2353CLX-16#PBF require an external reference voltage?
No - the LTC2353CLX-16#PBF includes an internal 2.048V reference and a buffered 4.096V output (REFBUF). REFIN can accept an external 1.25V–2.2V reference if higher accuracy or custom voltage is needed, but the internal reference is fully functional for standard ±10.24V operation.
How does the SoftSpan™ feature work on the LTC2353CLX-16#PBF?
The SoftSpan™ feature on the LTC2353CLX-16#PBF allows independent, conversion-by-conversion selection of eight input ranges per channel - including ±10.24V, 0–10.24V, ±5.12V, 0–5.12V, ±12.5V, 0–12.5V, ±6.25V, and 0–6.25V - configured via SPI command without hardware changes.
Can the LTC2353CLX-16#PBF interface directly with ±15V analog signals?
Yes - the LTC2353CLX-16#PBF supports analog input common-mode voltages from VEE + 4V to VCC – 4V. With VCC = +15V and VEE = –15V, it accepts ±10.24V differential signals with up to ±30V peak-to-peak common-mode range, making it compatible with standard ±15V op-amp outputs.
What digital interface options does the LTC2353CLX-16#PBF support?
The LTC2353CLX-16#PBF supports pin-selectable CMOS (1.8V–5V) or LVDS serial interfaces. In CMOS mode, it offers 1- or 2-lane data output; in LVDS mode, it uses differential SDO+/– and SCKO+/– pairs for noise-immune communication at high speeds.
LTC2353CLX-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:
- 0°C ~ 70°C
- Supplier Device Package:
- 48-LQFP (7x7)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2353CLX-16#PBF FAQ
1.How can I place an order for LTC2353CLX-16#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2353CLX-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 LTC2353CLX-16#PBF reliable?
The price and inventory of LTC2353CLX-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 LTC2353CLX-16#PBF is usually 5 days.
3.What payment methods are accepted for LTC2353CLX-16#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2353CLX-16#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2353CLX-16#PBF?
LTC2353CLX-16#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2353CLX-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 LTC2353CLX-16#PBF?
For technical support, including LTC2353CLX-16#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2353CLX-16#PBF requirements.
6.How does Aetrix verify that LTC2353CLX-16#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2353CLX-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 LTC2353CLX-16#PBF meets industry standards.
7.What is the process for return or replacement of LTC2353CLX-16#PBF?
All LTC2353CLX-16#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2353CLX-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 LTC2353CLX-16#PBF part is unused and in its original packaging.
Return procedure for LTC2353CLX-16#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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