My Inquiry
My Account
Analog Devices Inc. LTC2358ILX-18#PBF
- Part No.:
- LTC2358ILX-18#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-LQFP
- Datasheet:
-
LTC2358ILX-18#PBF.pdf
- Description:
- IC ADC 18BIT SAR 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:196
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC2358ILX-18#PBF from Analog Devices is an 18-bit, 8-channel simultaneous-sampling SAR ADC with buffered differential inputs, ±10.24V input range, 200ksps per channel throughput, and 96.4dB 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 sensor signals in power line monitoring and PLC systems.
For engineers reviewing the LTC2358ILX-18#PBF datasheet, LTC2358ILX-18#PBF pinout, LTC2358ILX-18#PBF application, or LTC2358ILX-18#PBF equivalent, key selection criteria include guaranteed no-missing-codes at 18 bits, 128dB CMRR at 200Hz, picoamp-level input leakage (5pA max at 85°C), SPI/LVDS dual-interface support, and 48-lead LQFP package compatibility with industrial temperature operation (–40°C to +85°C).
Technical Context
The LTC2358ILX-18#PBF implements a true simultaneous sampling architecture using eight independent analog input buffers and a shared 18-bit SAR core, enabling synchronized acquisition across all channels without inter-channel skew. Its SoftSpan™ configuration logic allows per-conversion range selection via digital control, supporting both bipolar and unipolar signal conditioning on each channel independently.
It operates from split analog supplies (VCC = +7.5V to +38V, VEE = –16.5V to 0V) and single 5V digital supply (VDD), with internal regulation for VDDLBYP. The device supports two serial interface modes: CMOS (1.8V–5V OVDD) with configurable lane count (1–8 SDO lines), and LVDS (2.375V–5.25V OVDD) for noise-immune high-speed data transfer.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 18-bit - guarantees full dynamic range quantization without missing codes under all operating conditions. |
| Sampling Rate | 200ksps per channel (8-channel mode) - enables real-time capture of 100kHz bandwidth signals with Nyquist margin. |
| INL (Max) | ±3.5LSB at ±10.24V range - ensures <0.001% end-point linearity error for precision measurement calibration. |
| SNR (Typ) | 96.4dB at fIN = 2kHz - delivers >15.9 effective number of bits (ENOB) for high-fidelity signal reconstruction. |
| CMRR (Typ) | 128dB at 200Hz - rejects common-mode interference from noisy industrial environments (e.g., motor drives, switching PSUs). |
| Input Leakage | 5pA max at 85°C - preserves signal integrity in high-impedance sensor interfaces (e.g., strain gauges, piezoelectric transducers). |
| Package | 48-lead 7mm × 7mm LQFP - provides thermal performance (θJA = 53°C/W) and PCB layout compatibility for dense industrial modules. |
Pinout & Package
48-lead plastic LQFP (7mm × 7mm, LX package), RoHS-compliant, with exposed pad for thermal enhancement. Pin functions validated per Linear Technology (Analog Devices) LTC2358-18 datasheet Rev. F.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN0+ to IN7+ | Differential analog input positive | Accepts buffered, wide common-mode (VEE+4V to VCC–4V), ±10.24V-range signals with 1000GΩ input resistance. |
| IN0– to IN7– | Differential analog input negative | Enables true differential, arbitrary, or unipolar drive configurations; supports rail-to-rail overdrive tolerance. |
| VCC / VEE | Analog supply rails | Split supplies (VCC = +7.5V to +38V, VEE = –16.5V to 0V) enable direct interfacing to ±15V, ±12V, or +24V industrial buses. |
| REFBUF / REFIN | Reference buffer output / input | Provides 4.096V buffered reference (±5mV accuracy); REFIN accepts 1.25V–2.2V external reference or disables internal buffer. |
| CS / CNV / BUSY | Digital control interface | Standard SPI-compatible timing: CNV initiates conversion, BUSY indicates active conversion, CS enables serial output. |
| SDO0–SDO7 / SCKO / SCKI / SDI | Serial data I/O | Configurable CMOS (1–8 lanes) or LVDS interface; supports daisy-chain or parallel readout for multi-ADC systems. |
| PD | Power-down control | Active-high signal reduces supply current to ≤1μA (I-Grade), enabling low-power sleep states between acquisition bursts. |
Key Features
| Feature | Design Value |
|---|---|
| Per-channel SoftSpan™ range selection | Independent ±10.24V, 0–10.24V, ±5.12V, or 0–5.12V configuration per conversion - eliminates external gain-switching circuitry. |
| Simultaneous sampling with matched aperture | 150ps aperture delay matching across all 8 channels - ensures phase-coherent acquisition for power quality analysis and vector measurements. |
| Integrated reference buffer | 4.096V output with 1.5mA drive capability and 20ppm/°C tempco - removes need for external reference IC and decoupling network. |
| Rail-to-rail input overdrive tolerance | Withstands ±(VCC–VEE) differential overvoltage without corruption - protects against transient surges in motor control feedback loops. |
| Picoamp input leakage (5pA max @ 85°C) | Enables direct connection to high-Z sensors (e.g., pH electrodes, thermopiles) without guard traces or active guarding circuitry. |
Applications
| Power Line Monitoring | Programmable Logic Controllers |
|---|---|
Use Scenario: Real-time acquisition of voltage/current waveforms across 3-phase distribution grids for harmonic distortion, flicker, and sag/swell detection. IC Role / Device Role / Timing Role: Simultaneous 8-channel sampling captures synchronized voltage and current samples across phases and neutral, enabling cycle-by-cycle RMS, THD, and sequence component calculation. Use Value: 96.4dB SNR and 128dB CMRR suppress noise from adjacent switchgear and variable-frequency drives, ensuring IEC 61000-4-30 Class A compliance. | Use Scenario: High-precision analog input module in modular PLC backplanes for factory automation I/O cards handling pressure, temperature, and position sensors. IC Role / Device Role / Timing Role: Digitizes up to eight isolated sensor outputs with per-channel range auto-scaling (e.g., ±10V for load cells, 0–10V for RTDs), reducing firmware calibration overhead. Use Value: 5pA input leakage and 1000GΩ input resistance preserve signal fidelity from 10kΩ–1MΩ sensor sources without external op-amp buffering. |
| Industrial Process Control | Test and Measurement Systems |
Use Scenario: Closed-loop control of chemical reactor parameters (pH, dissolved oxygen, flow rate) requiring sub-0.01% measurement stability over temperature. IC Role / Device Role / Timing Role: Provides 18-bit no-missing-codes resolution and ±3.5LSB INL across –40°C to +85°C, enabling one-time factory calibration with lifetime accuracy retention. Use Value: Integrated 4.096V reference buffer (±5mV, 20ppm/°C) eliminates drift-induced errors in multi-decade measurement spans. | Use Scenario: Modular DAQ card in automated test equipment for characterizing power converters, motor drives, and audio amplifiers. IC Role / Device Role / Timing Role: Captures synchronized voltage/current waveforms at 200ksps/channel with 6MHz –3dB input bandwidth, supporting ENOB-based validation per IEEE 1057. Use Value: LVDS serial interface enables noise-immune data streaming at >100Mbps over 30cm backplane traces, avoiding EMI-induced bit errors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-precision multichannel ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7606C-18 | 18-bit, 8-channel, ±10V range, but uses charge-redistribution SAR without input buffers; requires external op-amps for high-Z sources. | Higher power (45mW/ch vs 27mW/ch), no SoftSpan™ flexibility - fixed ±10V/±5V/0–10V ranges only. | Select when cost sensitivity outweighs input drive simplicity and leakage-critical sensor interfacing. |
| ADS8688 | 16-bit, 8-channel, integrated PGA (±10.24V range), but no simultaneous sampling - successive-approximation with 250ns inter-channel skew. | Lower SNR (92dB vs 96.4dB), no LVDS option - limited to CMOS interface with max 50MHz SCLK. | Select when programmable gain and lower system cost justify reduced resolution and lack of true simultaneity. |
Compared with AD7606C-18 and ADS8688, the LTC2358ILX-18#PBF uniquely combines buffered picoamp inputs, per-channel SoftSpan™ range reconfiguration, simultaneous sampling with <150ps matching, and dual CMOS/LVDS interface - making it optimal for high-fidelity, high-channel-count industrial DAQ where signal integrity and timing coherence are non-negotiable.
Availability
LTC2358ILX-18#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 operation (–40°C to +85°C) and long product lifecycle support.
Supply support for LTC2358ILX-18#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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC2358-18 product line delivers high-resolution, multichannel data acquisition solutions optimized for harsh industrial environments - emphasizing simultaneous sampling accuracy, wide input voltage tolerance, and robust serial interface options for reliable system integration.
FAQ
What is the maximum sampling rate per channel for the LTC2358ILX-18#PBF when all eight channels are enabled?
The LTC2358ILX-18#PBF achieves 200ksps per channel with all eight channels simultaneously enabled. This corresponds to a total aggregate throughput of 1.6Msps, supported by its internal conversion clock and zero-cycle-latency architecture. At this rate, the device maintains 96.4dB SNR and ±3.5LSB INL in the ±10.24V range, as verified across the full –40°C to +85°C operating temperature range.
Does the LTC2358ILX-18#PBF require external analog input buffers for high-impedance sensor interfaces?
No, the LTC2358ILX-18#PBF does not require external analog input buffers. It integrates picoamp-input analog buffers with 1000GΩ input resistance and 5pA max input leakage at 85°C, enabling direct connection to high-impedance sources such as strain gauges, thermocouples, and pH electrodes. Its 128dB CMRR at 200Hz further ensures signal integrity without additional front-end filtering.
How does the SoftSpan™ feature work on the LTC2358ILX-18#PBF, and what input ranges does it support?
The SoftSpan™ feature on the LTC2358ILX-18#PBF allows per-conversion, per-channel selection of four differential input ranges: ±10.24V, 0–10.24V, ±5.12V, and 0–5.12V. Configuration is controlled digitally via SPI register writes prior to each CNV pulse. This eliminates external gain-switching hardware and enables mixed-range acquisition - for example, measuring ±10V motor voltage while simultaneously digitizing 0–5V temperature sensor output on adjacent channels.
What serial interface options does the LTC2358ILX-18#PBF support, and how do they differ in implementation?
The LTC2358ILX-18#PBF supports both CMOS and LVDS serial interfaces, selected via the LVDS/CMOS pin. In CMOS mode (OVDD = 1.71–5.25V), it offers 1–8 configurable SDO lanes for flexible bus-width optimization. In LVDS mode (OVDD = 2.375–5.25V), it provides differential SDO/SCKO outputs with 100Ω termination, delivering noise immunity for high-speed (>100Mbps) data transmission over longer PCB traces or backplanes without added shielding.
What is the guaranteed operating temperature range for the LTC2358ILX-18#PBF, and how does it affect key specifications?
The LTC2358ILX-18#PBF is rated for –40°C to +85°C operation (I-grade). All critical specifications - including ±3.5LSB INL (±10.24V range), 96.4dB SNR, 128dB CMRR, and 5pA input leakage - are guaranteed over this full range. Temperature drift is tightly controlled: full-scale error drift is ±2.5ppm/°C, and zero-scale error drift is ±4μV/°C, ensuring minimal recalibration needs in field-deployed industrial equipment.
LTC2358ILX-18#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- SoftSpan™
- Package/Case:
- 48-LQFP
- Packaging:
- Tray
- Product Status:
- Active
- Number of Bits:
- 18
- 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 (TA)
- Supplier Device Package:
- 48-LQFP (7x7)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2358ILX-18#PBF FAQ
1.How can I place an order for LTC2358ILX-18#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2358ILX-18#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-18#PBF reliable?
The price and inventory of LTC2358ILX-18#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-18#PBF is usually 5 days.
3.What payment methods are accepted for LTC2358ILX-18#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2358ILX-18#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2358ILX-18#PBF?
LTC2358ILX-18#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2358ILX-18#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-18#PBF?
For technical support, including LTC2358ILX-18#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2358ILX-18#PBF requirements.
6.How does Aetrix verify that LTC2358ILX-18#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2358ILX-18#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-18#PBF meets industry standards.
7.What is the process for return or replacement of LTC2358ILX-18#PBF?
All LTC2358ILX-18#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2358ILX-18#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-18#PBF part is unused and in its original packaging.
Return procedure for LTC2358ILX-18#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC2358ILX-18#PBF Tags
-
ADC081C021CIMKX/NOPB
Texas Instruments
-
MCP3021A5T-E/OT
Microchip Technology
-
TLA2024IRUGR
Texas Instruments
-
MCP3221A5T-E/OT
Microchip Technology
-
MCP3221A5T-I/OT
Microchip Technology
-
MCP3221A4T-E/OT
Microchip Technology
-
MCP3221A6T-E/OT
Microchip Technology
-
MCP3221A0T-E/OT
Microchip Technology
-
MCP3221A1T-E/OT
Microchip Technology
-
ADC121S021CIMFX/NOPB
Texas Instruments
-
MCP3001-I/MS
Microchip Technology
-
MCP3001-I/SN
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
