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Analog Devices Inc. LTC2358ILX-16#PBF
- Part No.:
- LTC2358ILX-16#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-LQFP
- Datasheet:
-
LTC2358ILX-16#PBF.pdf
- Description:
- IC ADC 16BIT SAR 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:336
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Product details
Overview
LTC2358ILX-16#PBF from Analog Devices is a 16-bit, 8-channel simultaneous-sampling SAR ADC with buffered differential inputs, ±10.24V input range, 200ksps per channel throughput, and 94.2dB SNR. It features per-channel SoftSpan™ programmable input ranges (±10.24V/0–10.24V/±5.12V/0–5.12V), integrated 4.096V reference buffer, and rail-to-rail input overdrive tolerance - enabling direct digitization of high-voltage industrial signals without external signal conditioning.
For engineers reviewing the LTC2358ILX-16#PBF datasheet, LTC2358ILX-16#PBF pinout, LTC2358ILX-16#PBF application, or LTC2358ILX-16#PBF equivalent, this page delivers verified specifications including 128dB CMRR at 200Hz, ±1LSB INL (max, ±10.24V range), 500pA max input leakage at 85°C, 48-lead LQFP package, and dual-mode SPI CMOS/LVDS serial interface for flexible system integration.
Technical Context
The LTC2358ILX-16#PBF implements a true 16-bit successive approximation register architecture with independent per-channel analog input buffers and picoamp-level input leakage (≤500pA at 85°C). Its SoftSpan™ configuration logic allows real-time, conversion-by-conversion selection among four differential input voltage ranges using internal reference scaling.
It supports two serial interface modes: CMOS (1.8V–5V OVDD) with configurable 1–8 data lanes, and LVDS with differential SCKI/SDO pairs. The device uses an internal conversion clock with zero cycle latency and includes dedicated CNV, BUSY, and PD control signals for deterministic timing in synchronized multi-channel acquisition systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - guarantees no missing codes and full dynamic range for precision measurement applications. |
| Sampling Rate | 200ksps per channel (8-channel simultaneous) - enables real-time capture of fast transients in power line monitoring. |
| INL (Max) | ±1 LSB (±10.24V range) - ensures accurate end-point linearity critical for calibration-critical industrial instrumentation. |
| SNR | 94.2dB (typical, fIN = 2kHz) - supports >15.6 effective number of bits (ENOB) for high-fidelity signal reconstruction. |
| CMRR | 128dB (typical, 200Hz) - rejects common-mode noise from motor drives or long sensor cables in PLC environments. |
| Input Leakage | 500pA max at 85°C - preserves signal integrity in high-impedance sensor interfaces without loading error. |
| Supply Range | VCC = 7.5–38V, VEE = –16.5–0V - accommodates wide industrial supply rails including ±15V and +24V/–12V systems. |
| Package | 48-lead 7mm × 7mm LQFP - provides thermal performance (θJA = 53°C/W) and layout compatibility with standard industrial PCB processes. |
Pinout & Package
48-lead plastic LQFP (7mm × 7mm, LX package), RoHS-compliant, with exposed pad for thermal management. Pin functions validated per Analog Devices LTC2358-16 datasheet Rev A.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN0+ to IN7+ | Differential analog input positive | Buffered picoamp-input terminals supporting ±10.24V common mode range and rail-to-rail overdrive tolerance. |
| IN0– to IN7– | Differential analog input negative | Paired with corresponding INx+ for fully differential acquisition; enables true bipolar and arbitrary common-mode drive. |
| VCC / VEE | Analog supply rails | Wide-range supplies (VCC up to +38V, VEE down to –16.5V) power input buffers and core ADC, enabling direct high-voltage interfacing. |
| VDD / OVDD | Digital supply rails | VDD = 4.75–5.25V powers internal logic; OVDD = 1.71–5.25V sets CMOS I/O voltage level or enables LVDS mode. |
| CNV | Conversion start trigger | Edge-triggered input initiating simultaneous sampling across all enabled channels; supports precise time-aligned acquisition. |
| BUSY | Conversion status indicator | Active-high open-drain output signaling ongoing conversion; used for handshaking with FPGA or microcontroller. |
| SDO0–SDO7 | Serial data outputs | Configurable CMOS or LVDS outputs delivering 16-bit results per channel; lane count scalable from 1 to 8 for bus optimization. |
| REFBUF | Reference buffer output | 4.096V buffered reference (±5mV accuracy) with 1.5mA drive capability - powers external circuitry or serves as precision gain reference. |
Key Features
| Feature | Design Value |
|---|---|
| Per-channel SoftSpan™ input configuration | Independent selection of ±10.24V, 0–10.24V, ±5.12V, or 0–5.12V range per conversion - eliminates need for external gain-switching circuitry. |
| Integrated reference buffer | 4.096V output with <±0.025% full-scale error and 2.5–5V overdrive range - reduces BOM count and improves system-level accuracy stability. |
| Rail-to-rail input overdrive tolerance | Withstands analog inputs up to VCC + 0.3V or VEE – 0.3V without latch-up - protects against transient surges in harsh industrial environments. |
| 128dB CMRR at 200Hz | Rejects common-mode interference from variable-frequency drives or EMI-rich factory floors - maintains signal fidelity without external filtering. |
| Low-power nap mode | Reduces IVCC/IVEE current to 2.9–3.3mA while preserving channel configuration - extends uptime in battery-backed or energy-constrained monitoring nodes. |
| LVDS/CMOS dual serial interface | Switchable between noise-immune LVDS (350mV differential swing) and flexible CMOS (1.8–5V OVDD) - adapts to host processor I/O constraints without redesign. |
Applications
| Programmable Logic Controllers | Industrial Process Control |
|---|---|
Use Scenario: High-density analog input modules acquiring voltage/current signals from field transmitters, RTDs, and thermocouples in modular PLC backplanes. IC Role / Device Role / Timing Role: Simultaneous 8-channel sampling front-end with per-channel range flexibility and deterministic CNV-triggered acquisition timing. Use Value: Eliminates multiplexer-induced settling delays and channel skew, enabling true snapshot capture of correlated process variables (e.g., pressure + flow + temperature). | Use Scenario: Distributed I/O systems monitoring valve positions, motor currents, and tank levels across chemical plant networks. IC Role / Device Role / Timing Role: Precision ADC with 128dB CMRR rejecting ground-loop noise from 4–20mA loop-powered sensors and VFD harmonics. Use Value: Maintains ±1LSB linearity despite 30VP–P common-mode swings on sensor lines - reduces calibration frequency and improves long-term measurement confidence. |
| Power Line Monitoring | Test and Measurement |
Use Scenario: Three-phase power quality analyzers capturing voltage and current waveforms at 200ksps/channel for harmonic analysis up to 50th order. IC Role / Device Role / Timing Role: Simultaneous sampling ADC with 94.2dB SNR and –111dB THD enabling accurate RMS, crest factor, and interharmonic measurements. Use Value: Delivers >15.6 ENOB at 2kHz - meets IEC 61000-4-30 Class A requirements for sub-cycle event detection and waveform distortion quantification. | Use Scenario: Modular data acquisition systems performing benchtop characterization of power electronics, sensors, and embedded controllers. IC Role / Device Role / Timing Role: High-precision, low-leakage ADC front-end supporting DC accuracy validation, AC performance sweeps, and transient response testing. Use Value: 500pA input leakage at 85°C prevents bias-current-induced offset drift during extended thermal soak tests - improves repeatability of parametric validation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-precision, multi-channel SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7606C-16 | 16-bit, 8-channel, ±10V range, but uses external reference and lacks SoftSpan™ per-channel range switching; 220ksps max rate. | Requires external reference buffer and gain-setting resistors for range changes; less flexible for mixed-signal inputs within same acquisition window. | Select when system already uses ADI's reference ecosystem and fixed-range operation suffices; avoid when dynamic per-channel range reconfiguration is required. |
| ADS8688 | 16-bit, 8-channel, integrated reference, but only unipolar 0–10V range and 500ksps aggregate (not per-channel); 100dB SNR. | Cannot acquire true bipolar signals without external level-shifting; lower dynamic range limits harmonic analysis depth in power quality apps. | Select for cost-sensitive unipolar-only applications where per-channel simultaneity is secondary to total throughput; avoid for true bipolar or high-SNR requirements. |
Compared with AD7606C-16 and ADS8688, the LTC2358ILX-16#PBF uniquely combines per-channel SoftSpan™ configurability, 200ksps/channel simultaneity, and 94.2dB SNR - making it the only option capable of mixed-range, high-fidelity, time-aligned acquisition in space-constrained industrial modules.
Availability
LTC2358ILX-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 ranges (–40°C to +85°C).
Supply support for LTC2358ILX-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. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC2358-16 belongs to Analog Devices' high-precision SAR ADC product line, designed specifically for industrial automation and energy infrastructure applications demanding simultaneous multi-channel acquisition, wide input voltage ranges, and robust noise immunity.
FAQ
What is the operating temperature range for the LTC2358ILX-16#PBF?
The LTC2358ILX-16#PBF is rated for industrial operation from –40°C to +85°C, as confirmed by its "I" grade marking and Absolute Maximum Ratings table in the official datasheet. This range supports deployment in control cabinets, outdoor substations, and factory-floor I/O modules without derating.
Does the LTC2358ILX-16#PBF require an external reference voltage?
No, the LTC2358ILX-16#PBF integrates a precision 4.096V reference buffer (REFBUF) with ±0.025% full-scale error and supports overdriving REFBUF from 2.5V to 5V. External reference is optional only if higher accuracy or custom voltage is needed - the internal solution eliminates external components for most industrial applications.
How does the SoftSpan™ feature work on the LTC2358ILX-16#PBF?
The SoftSpan™ feature on the LTC2358ILX-16#PBF allows each of the eight channels to be independently configured per conversion for ±10.24V, 0–10.24V, ±5.12V, or 0–5.12V input ranges using internal reference scaling. Configuration is controlled via SPI register writes - enabling mixed-range acquisition (e.g., ±10V motor voltage + 0–5V temperature sensor) in a single sample window.
What serial interface options does the LTC2358ILX-16#PBF support?
The LTC2358ILX-16#PBF supports both CMOS and LVDS serial interfaces, selected via hardware pin. In CMOS mode, OVDD sets I/O voltage (1.8V–5V) and 1–8 SDO lanes can be enabled. In LVDS mode, it delivers noise-immune differential signaling with 350mV swing and 100Ω termination - ideal for noisy industrial backplanes or long cable runs.
What is the maximum input common mode voltage range for the LTC2358ILX-16#PBF?
The LTC2358ILX-16#PBF supports a 30VP–P common mode range, specified as VEE + 4V to VCC – 4V (e.g., –11V to +11V with ±15V supplies). This enables direct connection to high-common-mode industrial sensors without attenuators or isolation amplifiers - validated by 128dB CMRR at 200Hz.
LTC2358ILX-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):
- 200k
- Number of Inputs:
- 8
- Input Type:
- Differential, Pseudo-Differential, Single Ended
- Data Interface:
- LVDS - Serial, SPI
- Configuration:
- S/H-MUX-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 7.5V ~ 38V
- Voltage - Supply, Digital:
- 1.71V ~ 5.25V
- Features:
- Simultaneous Sampling
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 48-LQFP (7x7)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2358ILX-16#PBF FAQ
1.How can I place an order for LTC2358ILX-16#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2358ILX-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 LTC2358ILX-16#PBF reliable?
The price and inventory of LTC2358ILX-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 LTC2358ILX-16#PBF is usually 5 days.
3.What payment methods are accepted for LTC2358ILX-16#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2358ILX-16#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2358ILX-16#PBF?
LTC2358ILX-16#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2358ILX-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 LTC2358ILX-16#PBF?
For technical support, including LTC2358ILX-16#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2358ILX-16#PBF requirements.
6.How does Aetrix verify that LTC2358ILX-16#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2358ILX-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 LTC2358ILX-16#PBF meets industry standards.
7.What is the process for return or replacement of LTC2358ILX-16#PBF?
All LTC2358ILX-16#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2358ILX-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 LTC2358ILX-16#PBF part is unused and in its original packaging.
Return procedure for LTC2358ILX-16#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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