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Analog Devices Inc. LTC2348ILX-16#PBF
- Part No.:
- LTC2348ILX-16#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-LQFP
- Datasheet:
-
LTC2348ILX-16#PBF.pdf
- Description:
- IC ADC 16BIT SAR 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:331
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Product details
Overview
LTC2348ILX-16#PBF from Analog Devices (formerly Linear Technology) is a 16-bit, octal-channel simultaneous-sampling SAR ADC with differential inputs, ±10.24V SoftSpan™ configurable ranges, 200ksps per channel throughput, and integrated 4.096V reference buffer. It operates from ±15V analog supplies and 5V digital supply, delivering 94.4dB SNR and ±1LSB INL for high-precision industrial data acquisition in harsh environments.
For engineers reviewing the LTC2348ILX-16#PBF datasheet, LTC2348ILX-16#PBF pinout, LTC2348ILX-16#PBF application, or LTC2348ILX-16#PBF equivalent, this page provides verified specifications, validated pin functions, real-world application context for power line monitoring and PLCs, and confirmed alternative options with documented functional trade-offs.
Technical Context
The LTC2348ILX-16#PBF implements an 8-channel simultaneous sampling architecture using independent sample-and-hold circuits per channel, enabling true time-aligned digitization of multi-sensor inputs without inter-channel skew. Its SoftSpan™ input flexibility allows per-channel configuration between ±10.24V, 0–10.24V, ±5.12V, and 0–5.12V ranges on a conversion-by-conversion basis.
It supports dual serial interfaces: SPI CMOS (1.8V–5V I/O) with selectable 1–8 data lanes, and LVDS for noise-immune high-speed transmission. Internal conversion clock eliminates external timing dependencies, and rail-to-rail input overdrive tolerance ensures robustness against transient excursions beyond supply rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - guarantees no missing codes and full dynamic range for precision measurement systems. |
| Sampling Rate | 200ksps per channel (8-channel mode) - enables real-time capture of 100kHz signal content per input. |
| INL | ±1 LSB max - ensures accurate end-point linearity critical for calibration-sensitive applications like energy metering. |
| SNR | 94.4dB typical at 2kHz - delivers >15.7 effective bits for low-noise sensor interfacing. |
| CMRR | 118dB typical at 200Hz - rejects common-mode interference in noisy industrial settings such as motor drives. |
| Input Range Flexibility | Per-channel SoftSpan™: ±10.24V / 0–10.24V / ±5.12V / 0–5.12V - eliminates external signal conditioning for mixed-voltage sensor arrays. |
| Operating Temp | –40°C to +85°C - qualified for extended industrial temperature operation without derating. |
Pinout & Package
48-lead (7mm × 7mm) plastic LQFP package (LX), RoHS-compliant, with exposed pad for thermal management. Pinout validated per Linear Technology LTC2348-16 datasheet Rev. FA (2015).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN0+ to IN7+ | Differential analog input positive | Accepts wide common-mode signals up to VCC–4V; supports true bipolar drive (INx– = 0V) or fully differential drive (INx– = –INx+). |
| IN0– to IN7– | Differential analog input negative | Enables common-mode rejection >118dB; rail-to-rail overdrive tolerance prevents latch-up during transients. |
| VCC / VEE | Analog supply rails | Supports ±15V operation (–16.5V ≤ VEE ≤ 0V, 0V ≤ VCC ≤ 38V); enables direct interface to ±10V industrial sensors. |
| VDD / OVDD | Digital core & I/O supply | VDD = 4.75–5.25V for logic core; OVDD = 1.71–5.25V (CMOS) or 2.375–5.25V (LVDS) - enables mixed-voltage system integration. |
| REFBUF / REFIN | Reference buffer output / input | REFBUF = 4.096V buffered output (1.5mA drive); REFIN accepts 1.25–2.2V external reference or disables internal buffer when grounded. |
| CS / CNV / BUSY / SDOx / SCKI / SDI | Digital control & serial interface | CMOS/LVDS-selectable interface; CNV initiates conversion; BUSY indicates active conversion; SDOx outputs channel data in parallel or serialized format. |
Key Features
| Feature | Design Value |
|---|---|
| Per-channel SoftSpan™ input range selection | Enables mixed-range acquisition (e.g., ±10.24V current loop + 0–5.12V thermocouple) without external multiplexers or gain switching. |
| Simultaneous sampling across all 8 channels | Eliminates phase skew between channels - essential for vector measurements in power quality analyzers and motor control feedback. |
| Integrated 4.096V reference buffer | Reduces BOM count and layout complexity; delivers stable 1.5mA load current to support all 8 channels without external op-amps. |
| LVDS or CMOS serial interface | LVDS mode suppresses EMI in noisy factory floors; CMOS mode supports flexible bus width (1–8 lanes) to match host processor bandwidth constraints. |
| Rail-to-rail input overdrive tolerance | Withstands ±(VCC–VEE) differential overvoltage without damage or conversion corruption - critical for protection against field wiring faults. |
Applications
| Power Line Monitoring | Programmable Logic Controllers |
|---|---|
|
Use Scenario: Real-time acquisition of voltage, current, and harmonic content across 3-phase distribution systems. IC Role / Device Role / Timing Role: Simultaneous 8-channel sampling captures synchronized waveforms for RMS, THD, and sequence analysis. Use Value: 94.4dB SNR and 118dB CMRR enable accurate sub-0.1% energy measurement under high EMI conditions near switchgear. |
Use Scenario: Analog input module in modular PLC backplanes handling mixed industrial sensors (4–20mA, ±10V, RTD). IC Role / Device Role / Timing Role: Octal ADC with per-channel SoftSpan™ configures each input independently for optimal resolution per signal type. Use Value: Eliminates external signal conditioners and reduces channel count per module - lowering cost and board area by >30% vs discrete solutions. |
| Industrial Process Control | Test & Measurement Equipment |
|
Use Scenario: Closed-loop control of chemical reactor parameters (temperature, pressure, flow) requiring high stability over temperature. IC Role / Device Role / Timing Role: High-precision ADC with ±1LSB INL and <±2.5ppm/°C full-scale drift ensures calibration validity across –40°C to +85°C ambient. Use Value: Reduces need for periodic recalibration in field-deployed systems - extending maintenance intervals from quarterly to annually. |
Use Scenario: Modular DAQ card for benchtop oscilloscopes and automated test systems requiring multi-channel synchronization. IC Role / Device Role / Timing Role: Simultaneous sampling with <150ps aperture delay matching preserves phase coherence across channels for FFT-based analysis. Use Value: Enables accurate vector network analysis and cross-channel jitter measurement without external TDC hardware. |
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-16 | 16-bit, 8-channel, ±10V input, 1MSPS total throughput (not per channel); uses internal oscillator; no LVDS option. | Higher aggregate throughput but lower per-channel rate (125ksps @ 8-ch); less suitable for real-time 200kHz waveform capture. | Select for cost-sensitive, high-throughput data loggers where simultaneous sampling timing margin is relaxed. |
| ADS8688 | 16-bit, 8-channel, pseudo-simultaneous sampling (multiplexed SAR); 100ksps per channel; integrated PGA; SPI-only interface. | Lacks true simultaneous sampling; lower SNR (91.5dB); requires external reference; smaller 64-pin TQFP package. | Select for space-constrained designs needing programmable gain and lower power (65mW vs 140mW), accepting channel skew. |
Compared with AD7606C-16 and ADS8688, the LTC2348ILX-16#PBF uniquely delivers guaranteed 200ksps per channel simultaneous sampling with LVDS noise immunity and per-channel SoftSpan™ flexibility - making it the only choice for time-critical, mixed-range industrial acquisition where channel alignment and signal integrity are non-negotiable.
Availability
LTC2348ILX-16#PBF is available at Aetrix Electronics and suitable for power line monitoring, programmable logic controllers, and industrial process control systems requiring stable component supply, long-term lifecycle support, and guaranteed performance across –40°C to +85°C.
Supply support for LTC2348ILX-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 and maintains its high-performance analog product lines, emphasizing precision signal chain solutions for industrial, instrumentation, and aerospace markets.
The LTC2348 family was designed specifically for high-accuracy, multi-channel data acquisition in electric utility, factory automation, and test equipment - prioritizing simultaneous sampling integrity, input flexibility, and ruggedized operation.
FAQ
What is the maximum sampling rate per channel for LTC2348ILX-16#PBF?
The LTC2348ILX-16#PBF achieves 200ksps per channel when all eight channels are enabled. This rate scales with channel count: disabling channels increases individual channel throughput up to 1000ksps (1-channel mode). The device maintains simultaneous sampling integrity across all active channels at any rate.
Does LTC2348ILX-16#PBF require an external reference voltage?
No. The LTC2348ILX-16#PBF integrates a precision 4.096V reference buffer (REFBUF) and internal 2.048V reference (VREFIN), eliminating the need for external references in most applications. REFIN can accept an external 1.25–2.2V reference if higher accuracy or custom scaling is required, but doing so disables the internal buffer.
Can LTC2348ILX-16#PBF interface directly with a 1.8V microcontroller?
Yes. The LTC2348ILX-16#PBF supports CMOS I/O with OVDD ranging from 1.71V to 5.25V, allowing direct connection to 1.8V logic without level shifters. Its VIH and VIL thresholds scale with OVDD (0.8×OVDD and 0.2×OVDD), ensuring reliable communication with low-voltage hosts.
What is the purpose of the SoftSpan™ feature in LTC2348ILX-16#PBF?
SoftSpan™ allows each of the eight input channels to be independently configured on a conversion-by-conversion basis for ±10.24V, 0–10.24V, ±5.12V, or 0–5.12V full-scale ranges. This eliminates external gain-switching circuitry and enables mixed-signal acquisition - for example, measuring both ±10V motor currents and 0–5V temperature sensors on the same device.
How does LTC2348ILX-16#PBF handle input overvoltage conditions?
The LTC2348ILX-16#PBF features rail-to-rail input overdrive tolerance: differential inputs withstand up to ±(VCC–VEE) overvoltage without damage or conversion corruption. Internal clamping diodes protect against transients, and the 118dB CMRR ensures common-mode overvoltage does not degrade measurement accuracy on other channels.
LTC2348ILX-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
- Data Interface:
- LVDS - Serial, SPI
- Configuration:
- S/H-MUX-ADC
- Ratio - S/H:ADC:
- 8:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 5V
- Features:
- Simultaneous Sampling
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 48-LQFP (7x7)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2348ILX-16#PBF FAQ
1.How can I place an order for LTC2348ILX-16#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2348ILX-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 LTC2348ILX-16#PBF reliable?
The price and inventory of LTC2348ILX-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 LTC2348ILX-16#PBF is usually 5 days.
3.What payment methods are accepted for LTC2348ILX-16#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2348ILX-16#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2348ILX-16#PBF?
LTC2348ILX-16#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2348ILX-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 LTC2348ILX-16#PBF?
For technical support, including LTC2348ILX-16#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2348ILX-16#PBF requirements.
6.How does Aetrix verify that LTC2348ILX-16#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2348ILX-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 LTC2348ILX-16#PBF meets industry standards.
7.What is the process for return or replacement of LTC2348ILX-16#PBF?
All LTC2348ILX-16#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2348ILX-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 LTC2348ILX-16#PBF part is unused and in its original packaging.
Return procedure for LTC2348ILX-16#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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