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Analog Devices Inc. LTC2348HLX-16#PBF
- Part No.:
- LTC2348HLX-16#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-LQFP
- Datasheet:
-
LTC2348HLX-16#PBF.pdf
- Description:
- IC ADC 16BIT SAR 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:157
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Product details
Overview
LTC2348HLX-16#PBF from Analog Devices (formerly Linear Technology) is a 16-bit, octal-channel simultaneous-sampling SAR ADC with differential inputs, ±1LSB INL, 94.4dB SNR, and per-channel SoftSpan™ configurable input ranges (±10.24V, 0–10.24V, ±5.12V, 0–5.12V). It operates up to 200ksps per channel at –40°C to +125°C, integrates 4.096V reference and buffer, and supports SPI CMOS/LVDS interfaces - ideal for high-voltage industrial process monitoring and power line analytics.
For engineers reviewing the LTC2348HLX-16#PBF datasheet, LTC2348HLX-16#PBF pinout, LTC2348HLX-16#PBF application, or LTC2348HLX-16#PBF equivalent, key selection criteria include guaranteed no-missing-codes operation at 16 bits, 118dB CMRR across all eight channels, rail-to-rail input overdrive tolerance, internal conversion clock with zero cycle latency, and H-grade extended temperature qualification.
Technical Context
The LTC2348HLX-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 analog signals without inter-channel skew. Its SoftSpan™ input configuration logic allows per-conversion range selection via control registers - supporting both bipolar (±10.24V) and unipolar (0–10.24V) modes on different channels within the same frame.
It features dual serial interface options: pin-selectable CMOS (1.8V–5V I/O) with programmable lane count (1–8 data lanes), or LVDS with differential SCKI/SDO pairs. The internal 4.096V reference buffer delivers ±0.025% full-scale error and 5ppm/°C drift, and the analog front-end maintains 7MHz –3dB bandwidth with 3ps RMS aperture jitter - critical for high-fidelity wide-dynamic-range acquisition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - guarantees monotonic transfer function and no missing codes across full operating temperature range (–40°C to +125°C). |
| Sampling Rate | 200ksps per channel (8-channel mode) - enables real-time capture of 100kHz fundamental signals with Nyquist margin. |
| INL / DNL | ±1LSB max INL, ±0.9LSB max DNL - ensures accurate amplitude fidelity in closed-loop control and precision metrology. |
| SNR / THD | 94.4dB SNR, –109dB THD (fIN = 2kHz) - supports >15.5 effective number of bits (ENOB) in ±10.24V range. |
| 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. |
| CMRR | 118dB typical at 200Hz - rejects common-mode noise from motor drives, switching supplies, and long-line transducers. |
| Package | 48-lead LQFP (7mm × 7mm) - surface-mount compatible with industrial PCB thermal management and reflow profiles. |
Pinout & Package
48-lead plastic LQFP (LX package), 7mm × 7mm body, 0.5mm pitch, exposed pad (thermal enhancement), RoHS-compliant lead-free finish. Pin 1 marked by dot; top-side marking includes "LTC2348H" and date code.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN0+ to IN7+ | Differential analog input positive | Accepts signals from VEE – 0.3V to VCC + 0.3V; supports true bipolar (IN– = 0V) or fully differential (IN– = –IN+) drive configurations. |
| IN0– to IN7– | Differential analog input negative | Wide common-mode range (VEE to VCC – 4V); enables direct connection to isolated amplifiers, current shunts, and transformer secondaries. |
| VCC / VEE | Analog supply rails | Asymmetric dual supply: VCC = 0–38V, VEE = –16.5V to 0V; supports ±15V, ±12V, or +24V/–12V systems without level-shifting. |
| VDD / OVDD | Digital core & I/O supply | VDD = 4.75–5.25V (core logic); OVDD = 1.71–5.25V (CMOS) or 2.375–5.25V (LVDS) - enables mixed-voltage system interfacing. |
| REFIN / REFBUF | Reference input/output | REFIN accepts 1.25–2.2V external reference; REFBUF outputs 4.096V (±0.025% FSE) with 1.5mA drive capability for all 8 channels. |
| CNV / BUSY / CS | Conversion timing & interface control | CNV initiates sampling; BUSY indicates conversion progress; CS enables serial output - supports deterministic timing with <40ns CNV pulse width. |
| SDO0–SDO7 / SCKO / SCKI / SDI | Serial data interface | Configurable CMOS (1–8 lanes) or LVDS (differential pairs); SCKO phase-aligned to SDO for glitch-free capture; supports daisy-chain or parallel readout. |
Key Features
| Feature | Design Value |
|---|---|
| Simultaneous 8-channel sampling | Eliminates inter-channel timing skew (<150ps matching) - essential for phase-coherent power quality analysis and motor current vector control. |
| Per-channel SoftSpan™ configuration | Enables mixed-range acquisition (e.g., ±10.24V voltage + 0–5.12V temperature on same device) without external multiplexers or gain switches. |
| Rail-to-rail input overdrive tolerance | Withstands ±(VCC – VEE) differential overvoltage without corruption - protects against transient surges in industrial fieldbus environments. |
| Integrated 4.096V reference buffer | Delivers stable, low-drift reference to all 8 ADC cores; eliminates need for external reference ICs and reduces BOM count and layout area. |
| H-grade temperature rating | Guaranteed operation from –40°C to +125°C ambient - qualified for under-hood automotive, downhole oil/gas, and high-temperature factory automation. |
| Zero-cycle-latency internal clock | Removes dependency on external clock source synchronization; simplifies timing design and avoids metastability in high-speed control loops. |
Applications
| Power Line Monitoring | Industrial Process Control |
|---|---|
|
Use Scenario: Real-time measurement of voltage, current, harmonics, and flicker across 3-phase AC distribution systems. IC Role / Device Role / Timing Role: Simultaneous 8-channel acquisition captures synchronized voltage/current waveforms across multiple phases and neutral lines. Use Value: 118dB CMRR rejects common-mode noise from variable-frequency drives; ±10.24V SoftSpan accommodates CT/PT outputs without scaling resistors. |
Use Scenario: Closed-loop feedback in PLC-based chemical dosing, pressure regulation, and thermal chamber control. IC Role / Device Role / Timing Role: High-precision analog input subsystem digitizing sensor outputs (RTDs, strain gauges, 4–20mA receivers) with deterministic latency. Use Value: ±1LSB INL ensures sub-0.0015% amplitude accuracy; 200ksps throughput supports fast PID update rates in servo motion systems. |
| Test & Measurement Equipment | Energy Metering & Grid Analytics |
|
Use Scenario: Multi-channel oscilloscope front-end and portable power analyzer for field diagnostics. IC Role / Device Role / Timing Role: Simultaneous sampling engine enabling time-aligned waveform reconstruction across voltage, current, and auxiliary sensors. Use Value: 94.4dB SNR and –109dB THD support >15.5 ENOB; LVDS interface enables noise-immune transmission over longer PCB traces. |
Use Scenario: Revenue-grade energy metering with harmonic analysis and power quality classification per IEEE 519/1159. IC Role / Device Role / Timing Role: Precision ADC core in Class 0.2 or better polyphase meters requiring simultaneous voltage/current sampling per phase. Use Value: Guaranteed no-missing-codes at 16 bits ensures integrity of billing calculations; H-grade rating supports outdoor meter enclosures. |
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, but uses external reference; lower SNR (92.5dB typ); no SoftSpan™ per-channel range selection. | Requires external reference and driver op-amps for bipolar inputs; less flexible for mixed-signal sensor arrays. | Prefer when cost sensitivity outweighs configurability needs and external reference infrastructure already exists. |
| ADS8688IPWR | 16-bit, 8-channel, integrated reference, but single-ended inputs only; lower CMRR (100dB); max 500ksps aggregate (not per channel). | Not suitable for differential high-noise environments; lacks simultaneous sampling - introduces inter-channel phase error. | Consider only for low-noise, single-ended sensor systems where per-channel timing alignment is non-critical. |
Compared with AD7606C-16 and ADS8688IPWR, the LTC2348HLX-16#PBF uniquely combines per-channel SoftSpan™ flexibility, 118dB CMRR, and guaranteed simultaneous sampling - making it the only option among the three qualified for high-accuracy, mixed-range, noise-immune industrial power monitoring.
Availability
LTC2348HLX-16#PBF is available at Aetrix Electronics and suitable for power line monitoring, industrial process control, and test & measurement equipment requiring stable component supply across extended temperature and long product lifecycles.
Supply support for LTC2348HLX-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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors.
The LTC2348 family was designed specifically for high-accuracy, high-channel-count industrial data acquisition - emphasizing simultaneous sampling integrity, wide-input-voltage tolerance, and robust operation in harsh electromagnetic environments.
FAQ
What is the maximum sampling rate per channel for the LTC2348HLX-16#PBF?
The LTC2348HLX-16#PBF achieves 200ksps per channel when all eight channels are enabled. Throughput scales inversely with active channel count: 225ksps with seven channels, up to 1000ksps with one channel enabled - all while maintaining 16-bit resolution and no missing codes.
Does the LTC2348HLX-16#PBF require an external reference?
No. The LTC2348HLX-16#PBF integrates a precision 4.096V reference buffer (REFBUF) with ±0.025% full-scale error and 5ppm/°C drift. An external reference may be applied via REFIN (1.25–2.2V), but the internal reference is fully functional and optimized for all eight channels in the LTC2348HLX-16#PBF.
How does the SoftSpan™ feature work on the LTC2348HLX-16#PBF?
SoftSpan™ allows each of the eight input channels on the LTC2348HLX-16#PBF to be independently configured per conversion for ±10.24V, 0–10.24V, ±5.12V, or 0–5.12V ranges - selected via SPI register writes. This eliminates external gain-switching circuitry and enables mixed-signal acquisition on a single device.
What is the operating temperature range of the LTC2348HLX-16#PBF?
The LTC2348HLX-16#PBF is rated for continuous operation from –40°C to +125°C ambient temperature - designated by the "H" grade suffix. This extends beyond standard industrial (–40°C to +85°C) and commercial (0°C to +70°C) grades, qualifying it for under-hood, downhole, and high-temperature factory environments.
Can the LTC2348HLX-16#PBF interface directly with an FPGA using LVDS?
Yes. The LTC2348HLX-16#PBF supports pin-selectable LVDS serial I/O with differential SCKI, SDO, and SCKO signals. It meets ANSI TIA/EIA-644-A LVDS specifications, provides 275–425mV differential output voltage into 100Ω termination, and operates with VICM = 1.1–1.3V - fully compatible with FPGA LVDS receiver inputs.
LTC2348HLX-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 ~ 125°C
- Supplier Device Package:
- 48-LQFP (7x7)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2348HLX-16#PBF FAQ
1.How can I place an order for LTC2348HLX-16#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2348HLX-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 LTC2348HLX-16#PBF reliable?
The price and inventory of LTC2348HLX-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 LTC2348HLX-16#PBF is usually 5 days.
3.What payment methods are accepted for LTC2348HLX-16#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2348HLX-16#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2348HLX-16#PBF?
LTC2348HLX-16#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2348HLX-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 LTC2348HLX-16#PBF?
For technical support, including LTC2348HLX-16#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2348HLX-16#PBF requirements.
6.How does Aetrix verify that LTC2348HLX-16#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2348HLX-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 LTC2348HLX-16#PBF meets industry standards.
7.What is the process for return or replacement of LTC2348HLX-16#PBF?
All LTC2348HLX-16#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2348HLX-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 LTC2348HLX-16#PBF part is unused and in its original packaging.
Return procedure for LTC2348HLX-16#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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