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Analog Devices Inc. LTC2357HLX-16#PBF
- Part No.:
- LTC2357HLX-16#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-LQFP
- Datasheet:
-
LTC2357HLX-16#PBF.pdf
- Description:
- IC ADC 16BIT SAR 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:250
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Product details
Overview
LTC2357HLX-16#PBF from Analog Devices (formerly Linear Technology) is a 16-bit, quad-channel simultaneous-sampling SAR ADC with buffered differential inputs, ±10.24V input range, 350ksps 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 sensor signals in power line monitoring and PLC systems.
For engineers reviewing the LTC2357HLX-16#PBF datasheet, LTC2357HLX-16#PBF pinout, LTC2357HLX-16#PBF application, or LTC2357HLX-16#PBF equivalent, this page delivers verified specifications, thermal-grade packaging (–40°C to +125°C), LVDS/CMOS interface options, and real-world application context for high-dynamic-range analog acquisition in harsh environments.
Technical Context
The LTC2357HLX-16#PBF implements a true 4-channel simultaneous sampling architecture using independent SAR converters per channel, each with picoamp-input analog buffers and 128dB CMRR at 200Hz. Its SoftSpan™ configuration allows per-conversion selection of bipolar or unipolar input ranges without external hardware changes.
It operates from dual high-voltage analog supplies (VCC = +7.5V to +38V, VEE = –16.5V to 0V), a 5V digital supply (VDD), and supports both CMOS (1.71V–5.25V OVDD) and LVDS serial interfaces with configurable lane count (1–4 lanes). Internal conversion clock eliminates cycle latency and enables deterministic timing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with guaranteed no missing codes - ensures full dynamic range utilization in precision measurement. |
| Sampling Rate | 350ksps per channel (simultaneous) - supports real-time capture of fast transients across all four channels. |
| INL | ±1LSB max (±10.24V range) - enables accurate DC-coupled voltage measurements without calibration. |
| SNR | 94.2dB typical (fIN = 2kHz) - delivers >15.6 effective bits for high-fidelity signal reconstruction. |
| Input Leakage | 500pA max at 85°C, 12nA max at 125°C - preserves signal integrity with high-impedance sensors. |
| Common Mode Range | 30VP–P (VEE + 4V to VCC – 4V) - accepts arbitrary common-mode voltages up to ±15V with rail-to-rail overdrive tolerance. |
| Power Dissipation | 175mW at full rate (44mW/channel typical) - balances performance and thermal management in dense layouts. |
Pinout & Package
48-lead (7mm × 7mm) plastic LQFP package (LX), rated for –40°C to +125°C operation. Pin-compatible with other LTC2357 variants (C/I/H grades) in same LX footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN0+ / IN0– to IN3+ / IN3– | Differential analog inputs (4 channels) | Buffered picoamp-input pairs accepting ±10.24V, 0–10.24V, ±5.12V, or 0–5.12V ranges independently. |
| VCC / VEE | Analog supply rails | Supports wide high-voltage operation: VCC = +7.5V to +38V, VEE = –16.5V to 0V (ΔV ≤ 38V). |
| VDD / OVDD | Digital core and I/O supplies | VDD = 4.75–5.25V; OVDD = 1.71–5.25V (CMOS) or 2.375–5.25V (LVDS) - enables mixed-voltage system interfacing. |
| REFBUF / REFIN | Reference buffer output and input | REFBUF = 4.096V (typical); REFIN accepts 1.25–2.2V external reference or disables internal buffer when grounded. |
| CS / CNV / BUSY / SDOx / SCKI / SCKO | Serial interface control and data | Configurable SPI CMOS or LVDS interface with 1–4 data lanes; CNV initiates simultaneous sampling; BUSY indicates conversion status. |
Key Features
| Feature | Design Value |
|---|---|
| Per-channel SoftSpan™ input range selection | Enables runtime reconfiguration between ±10.24V, 0–10.24V, ±5.12V, and 0–5.12V - eliminates need for external gain-switching circuitry. |
| 128dB CMRR at 200Hz | Rejects common-mode noise from motor drives or switching power supplies without external instrumentation amplifiers. |
| Rail-to-rail input overdrive tolerance | Withstands analog inputs exceeding VCC or falling below VEE by up to ±(VCC–VEE) without latch-up or data corruption. |
| Simultaneous sampling with aperture matching ≤150ps | Ensures phase-coherent acquisition across all four channels for accurate power quality analysis and vector measurements. |
| Integrated reference buffer (4.096V) | Provides low-noise, low-drift reference with 5ppm/°C tempco - reduces BOM count and layout sensitivity vs. discrete reference solutions. |
Applications
| Power Line Monitoring | Programmable Logic Controllers |
|---|---|
Use Scenario: Real-time acquisition of voltage/current waveforms on 3-phase AC distribution systems with harmonic distortion analysis up to 50th order. IC Role / Device Role / Timing Role: Simultaneous 4-channel SAR ADC capturing synchronized line-to-line and line-to-neutral voltages with <150ps inter-channel aperture skew. Use Value: Enables IEEE 1459-compliant power calculations and fault detection via high-SNR (94.2dB), low-INL (±1LSB) digitization of ±10.24V sensor outputs. | Use Scenario: High-accuracy analog input module for industrial PLCs handling 4–20mA, ±10V, and thermocouple signals in factory automation. IC Role / Device Role / Timing Role: Buffered 16-bit ADC with programmable SoftSpan™ ranges per channel - adapts to diverse field transmitter types without hardware change. Use Value: Reduces system calibration burden and improves long-term stability with 500pA input leakage (85°C) and ±4μV/°C zero-scale drift. |
| Industrial Process Control | Test and Measurement Equipment |
Use Scenario: Closed-loop control of chemical reactor temperature, pressure, and flow using multiple high-impedance sensors (RTDs, strain gauges) in hazardous areas. IC Role / Device Role / Timing Role: Precision ADC with 30VP–P common mode range and rail-to-rail overdrive tolerance - interfaces directly to isolated front-end circuits without level-shifting. Use Value: Maintains accuracy under EMI-rich conditions via 128dB CMRR and eliminates external op-amps with integrated picoamp-input buffers. | Use Scenario: Modular data acquisition unit for benchtop oscilloscopes and automated test systems requiring multi-channel synchronized sampling. IC Role / Device Role / Timing Role: Quad 16-bit SAR converter with LVDS/CMOS interface flexibility - supports high-throughput streaming to FPGA or ARM-based controllers. Use Value: Delivers 350ksps/channel sustained rate with deterministic timing (no cycle latency) and low power (175mW), enabling portable or fanless instrument designs. |
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, 1MSPS, ±10V range; uses internal oscillator; no LVDS option; 5V-only OVDD. | Higher channel count and speed but lacks SoftSpan™ per-channel range flexibility and 125°C rating. | Select AD7606C-16 for cost-sensitive, higher-speed 8-channel systems where extended temperature range and LVDS are not required. |
| LTC2358-16 | 16-bit, octal-channel, 350ksps, identical SoftSpan™ and thermal specs; adds daisy-chain mode and improved THD (–117dB). | Same architecture and qualification, but doubles channel count - requires PCB redesign for 64-pin LQFP. | Select LTC2358-16 when expanding to 8 synchronized channels without sacrificing H-grade operation or interface flexibility. |
Compared with AD7606C-16 and LTC2358-16, the LTC2357HLX-16#PBF uniquely balances 4-channel simultaneity, –40°C to +125°C operation, LVDS/CMOS dual-interface support, and per-channel SoftSpan™ configurability - making it optimal for space-constrained, thermally demanding industrial DAQ modules where channel count and interface adaptability are prioritized over raw speed or density.
Availability
LTC2357HLX-16#PBF is available at Aetrix Electronics and suitable for power line monitoring, programmable logic controllers, and industrial process control applications requiring stable component supply, extended temperature reliability, and long-term obsolescence management.
Supply support for LTC2357HLX-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. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC2357 family was designed specifically for high-voltage, high-accuracy industrial data acquisition - emphasizing simultaneous sampling, wide common-mode tolerance, and robust operation in electrically noisy, thermally extreme environments.
FAQ
What is the operating temperature range of the LTC2357HLX-16#PBF?
The LTC2357HLX-16#PBF is rated for –40°C to +125°C ambient operation, meeting the H-grade specification. This extends beyond the I-grade (–40°C to +85°C) and C-grade (0°C to +70°C) variants, making it suitable for under-hood automotive sensing, motor drive feedback, and industrial control cabinets without forced cooling.
Does the LTC2357HLX-16#PBF require an external reference?
No - the LTC2357HLX-16#PBF integrates a precision 4.096V reference buffer (REFBUF) with 5ppm/°C temperature coefficient and supports internal reference operation. An external reference may be applied via REFIN (1.25–2.2V), but doing so disables the internal buffer and requires external buffering for optimal performance.
How does the SoftSpan™ feature work on the LTC2357HLX-16#PBF?
The SoftSpan™ feature on the LTC2357HLX-16#PBF allows independent, conversion-by-conversion configuration of each channel's input range: ±10.24V, 0–10.24V, ±5.12V, or 0–5.12V. This is controlled via dedicated configuration bits in the SPI command word - enabling dynamic adaptation to varying sensor outputs without hardware changes or multiplexing delays.
What digital interface options does the LTC2357HLX-16#PBF support?
The LTC2357HLX-16#PBF supports two pin-selectable serial interfaces: CMOS (1.71V–5.25V OVDD) and LVDS (2.375V–5.25V OVDD). In CMOS mode, 1–4 data lanes can be enabled to trade bus width for throughput; LVDS mode provides noise-immune, high-speed transmission with differential signaling and on-chip termination.
Can the LTC2357HLX-16#PBF operate with asymmetric analog supplies?
Yes - the LTC2357HLX-16#PBF supports asymmetric analog supplies: VCC may range from +7.5V to +38V while VEE ranges from –16.5V to 0V, provided |VCC – VEE| ≤ 38V. This enables flexible biasing for single-ended or pseudo-differential sensor interfaces and accommodates legacy ±15V or +24V/0V industrial supply rails.
LTC2357HLX-16#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 48-LQFP
- Packaging:
- Tray
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 350k
- Number of Inputs:
- 4
- Input Type:
- Differential
- Data Interface:
- SPI
- Configuration:
- S/H-MUX-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 4
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 7.5V ~ 38V
- Voltage - Supply, Digital:
- 4.75V ~ 5.25V
- Features:
- Simultaneous Sampling
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 48-LQFP (7x7)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2357HLX-16#PBF FAQ
1.How can I place an order for LTC2357HLX-16#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2357HLX-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 LTC2357HLX-16#PBF reliable?
The price and inventory of LTC2357HLX-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 LTC2357HLX-16#PBF is usually 5 days.
3.What payment methods are accepted for LTC2357HLX-16#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2357HLX-16#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2357HLX-16#PBF?
LTC2357HLX-16#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2357HLX-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 LTC2357HLX-16#PBF?
For technical support, including LTC2357HLX-16#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2357HLX-16#PBF requirements.
6.How does Aetrix verify that LTC2357HLX-16#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2357HLX-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 LTC2357HLX-16#PBF meets industry standards.
7.What is the process for return or replacement of LTC2357HLX-16#PBF?
All LTC2357HLX-16#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2357HLX-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 LTC2357HLX-16#PBF part is unused and in its original packaging.
Return procedure for LTC2357HLX-16#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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