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Analog Devices Inc. LTC2335HLX-16#PBF
- Part No.:
- LTC2335HLX-16#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-LQFP
- Datasheet:
-
LTC2335HLX-16#PBF.pdf
- Description:
- IC ADC 16BIT SAR 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:233
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Product details
Overview
LTC2335HLX-16#PBF from Analog Devices (formerly Linear Technology) is a 16-bit, 1 Msps, 8-channel differential successive approximation register (SAR) ADC with SoftSpan™ configurable input ranges (±10.24V, 0V–10.24V, ±5.12V, 0V–5.12V), 94.4 dB SNR, ±1 LSB INL, and guaranteed no missing codes. It operates across –40°C to +125°C and integrates reference and buffer for high-voltage industrial signal acquisition in PLCs and power monitoring.
For engineers reviewing the LTC2335HLX-16#PBF datasheet, LTC2335HLX-16#PBF pinout, LTC2335HLX-16#PBF application, or LTC2335HLX-16#PBF equivalent, key selection criteria include its wide common-mode input range (VEE to VCC–4V), 118 dB CMRR, rail-to-rail overdrive tolerance, programmable sequencer, and dual-interface support (SPI CMOS/LVDS) - all critical for high-accuracy, high-temperature, multi-range analog front-ends.
Technical Context
The LTC2335HLX-16#PBF employs a SAR architecture with on-chip programmable sequencer enabling per-conversion SoftSpan range selection across eight differential channels. Its analog front-end features true bipolar and fully differential input drive modes, 7 MHz –3dB bandwidth, and 150 ps aperture delay matching - optimized for simultaneous high-resolution sampling of diverse industrial sensor signals without external signal conditioning.
It supports two serial interface modes: CMOS (1.8V–5V OVDD) and LVDS (2.375V–5.25V OVDD), each with distinct timing constraints and termination requirements. Power management includes Acquisition, Nap, and Power-Down modes, with H-grade operation validated to 125°C ambient and junction temperature up to 150°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - guarantees full dynamic range digitization with no missing codes at system level. |
| Sampling Rate | 1 Msps - enables real-time capture of fast transients in power line monitoring and motor control. |
| INL | ±1 LSB max - ensures monotonicity and precision in closed-loop control feedback paths. |
| SNR | 94.4 dB typical (±10.24V range, fIN = 2 kHz) - delivers >15.7 effective bits for low-noise measurement systems. |
| CMRR | 118 dB typical - rejects common-mode noise from long sensor cables in noisy factory environments. |
| Operating Temp | –40°C to +125°C - qualified for under-hood automotive, industrial drives, and downhole instrumentation. |
| Package | 48-lead LQFP (7 mm × 7 mm) - surface-mount compatible with standard reflow profiles and thermal vias. |
Pinout & Package
Package: 48-lead plastic LQFP (7 mm × 7 mm), RoHS-compliant, lead-free finish. Thermal resistance θJA = 53°C/W; maximum junction temperature TJMAX = 150°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN0+ to IN7+, IN0− to IN7− | Differential analog inputs (Ch 0–7) | Accept VCM from VEE to VCC–4V; support true bipolar (IN− = 0V), fully differential (IN− = –IN+), or arbitrary common-mode drive. |
| VCC / VEE | High-voltage analog supplies | VCC = 0V to 38V, VEE = –16.5V to 0V; enable ±15V, ±12.5V, or custom high-voltage rails without external regulators. |
| REFIN / REFBUF | Reference input/output | REFIN = 2.048V bandgap output; REFBUF = 4.096V buffered reference - usable as system reference or overdriven externally (1.25V–2.2V). |
| CS / CNV / BUSY / SDO / SCKO / SCKI / SDI | Serial interface control & data | Supports SPI CMOS (1.8V–5V) and LVDS (differential clock/data) - selectable via PD pin; no pipeline latency. |
| GND (Pins 15,18,20,25,30,36,41,44,46) | Analog/digital ground | Multiple dedicated GND pins require low-impedance connection to solid ground plane for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| SoftSpan™ Input Ranges | Eight programmable per-channel ranges (±10.24V, 0–10.24V, ±5.12V, 0–5.12V, ±12.5V, 0–12.5V, ±6.25V, 0–6.25V) eliminate external gain-switching circuitry. |
| Wide Common-Mode Range | VCM = VEE to VCC–4V - allows direct digitization of signals referenced to non-ground potentials (e.g., floating current shunts). |
| Rail-to-Rail Overdrive Tolerance | Withstands ±(VCC–VEE) differential overvoltage without damage or latch-up - simplifies protection design in harsh environments. |
| No Latency Sequencer | Hardware-programmable channel/range sequence executes autonomously - reduces host processor overhead in cyclic acquisition systems. |
| 125°C Guaranteed Operation | H-grade qualification includes full parametric testing at +125°C ambient - eliminates derating concerns in sealed enclosures. |
Applications
| Programmable Logic Controllers | Industrial Process Control |
|---|---|
|
Use Scenario: High-density analog I/O modules acquiring voltage/current signals from field transmitters in chemical plants. IC Role / Device Role / Timing Role: Primary 16-bit ADC handling 8 differential sensor inputs with per-channel SoftSpan configuration for mixed 4–20 mA, ±10 V, and thermocouple signals. Use Value: Eliminates external multiplexers, gain stages, and reference buffers - reducing BOM count and improving channel-to-channel isolation (125 dB active crosstalk). |
Use Scenario: Closed-loop pressure/flow control in oil & gas skids operating at elevated ambient temperatures. IC Role / Device Role / Timing Role: Precision ADC in safety-critical feedback path, sampling at 1 Msps with deterministic conversion time (450–550 ns) and no pipeline delay. Use Value: ±1 LSB INL and 94.4 dB SNR ensure sub-0.01% measurement accuracy across –40°C to +125°C - meeting SIL-2 functional safety requirements. |
| Power Line Monitoring | Test and Measurement Equipment |
|
Use Scenario: Three-phase energy meters capturing voltage and current waveforms for harmonic analysis and power quality metrics. IC Role / Device Role / Timing Role: Simultaneous-sampling-capable ADC with 118 dB CMRR rejecting 50/60 Hz common-mode interference from shared neutral conductors. Use Value: 7 MHz input bandwidth and 3 ps RMS aperture jitter enable accurate THD measurement (<–109 dB at 2 kHz) without external anti-alias filtering. |
Use Scenario: Modular data acquisition systems requiring flexible input scaling and high channel density in compact form factors. IC Role / Device Role / Timing Role: Core ADC in PXI or USB-based DAQ modules, leveraging LVDS interface for noise-immune digital transmission over longer traces. Use Value: Dual CMOS/LVDS interface and 48-pin LQFP package allow migration between cost-sensitive (CMOS) and EMI-critical (LVDS) designs without PCB redesign. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-resolution, multi-channel SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7606C-16 | 16-bit, 1 Msps, 8-channel, but fixed ±10V/±5V ranges; no SoftSpan per-channel flexibility; uses internal 2.5V ref (not 4.096V); lower CMRR (100 dB). | Best suited for cost-sensitive applications where input ranges are static and common-mode rejection is less critical. | Select AD7606C-16 when board space is constrained (64-lead LQFP vs 48-lead) and SoftSpan configurability is unnecessary. |
| ADS8688 | 16-bit, 1 Msps, 8-channel, integrated PGA (±10.24V, ±5.12V, etc.), but only unipolar input; no true bipolar mode; lower SNR (92.5 dB); 105°C max temp rating. | Ideal for sensor signal chains requiring programmable gain but not bipolar input capability or extended temperature operation. | Choose ADS8688 when front-end amplification is required and operation above 105°C is not needed. |
Compared with AD7606C-16 and ADS8688, the LTC2335HLX-16#PBF uniquely combines per-channel SoftSpan range selection, true bipolar input support, 125°C operation, and 118 dB CMRR - making it the only option for high-accuracy, mixed-signal, high-temperature industrial acquisition where input signal polarity and amplitude vary dynamically per channel.
Availability
LTC2335HLX-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 and long product lifecycles.
Supply support for LTC2335HLX-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 ICs for industrial, automotive, communications, and healthcare markets.
The LTC2335 family was designed specifically for high-accuracy, high-voltage, multi-channel data acquisition in harsh industrial environments - emphasizing configurability, temperature robustness, and signal integrity without external support components.
FAQ
What is the maximum operating temperature for the LTC2335HLX-16#PBF?
The LTC2335HLX-16#PBF is rated for continuous operation from –40°C to +125°C ambient temperature, with absolute maximum junction temperature of 150°C. All electrical specifications - including INL, SNR, and CMRR - are guaranteed across this full range, unlike commercial or industrial grade variants.
Does the LTC2335HLX-16#PBF require external reference components?
No. The LTC2335HLX-16#PBF integrates a 2.048V bandgap reference (REFIN) and a buffered 4.096V master reference (REFBUF), both fully specified across temperature. External bypassing (0.1 µF ceramic on REFIN, 47 µF on REFBUF) is required, but no external reference IC or trimming is needed for standard operation.
How does the SoftSpan™ feature work on the LTC2335HLX-16#PBF?
SoftSpan™ allows per-conversion configuration of input range for each of the 8 differential channels - selecting among ±10.24V, 0–10.24V, ±5.12V, 0–5.12V, ±12.5V, 0–12.5V, ±6.25V, or 0–6.25V via SPI register writes. This eliminates external gain-switching hardware and enables mixed-signal acquisition on a single device.
Can the LTC2335HLX-16#PBF interface directly with a 1.8V microcontroller?
Yes. The LTC2335HLX-16#PBF supports SPI CMOS mode with OVDD from 1.71V to 5.25V. When OVDD = 1.8V, all digital inputs (CNV, CS, SCKI, SDI) accept 0.2×OVDD to 0.8×OVDD logic thresholds, and outputs (SDO, SCKO) drive 1.8V-compatible levels - enabling direct connection to low-voltage MCUs without level shifters.
What is the purpose of the PD pin on the LTC2335HLX-16#PBF?
The PD (Power-Down) pin controls three low-power states: Acquisition Mode (PD = low), Nap Mode (PD pulsed high ≥40 ns), and Power-Down Mode (PD held high ≥40 ns). In Power-Down Mode, supply current drops to ≤2.8 µA (H-grade), preserving system power budget during idle periods while retaining register settings and reference state.
LTC2335HLX-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):
- 1M
- Number of Inputs:
- 8
- Input Type:
- Differential
- Data Interface:
- LVDS - Serial, SPI
- Configuration:
- MUX-S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 48-LQFP (7x7)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2335HLX-16#PBF FAQ
1.How can I place an order for LTC2335HLX-16#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2335HLX-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 LTC2335HLX-16#PBF reliable?
The price and inventory of LTC2335HLX-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 LTC2335HLX-16#PBF is usually 5 days.
3.What payment methods are accepted for LTC2335HLX-16#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2335HLX-16#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2335HLX-16#PBF?
LTC2335HLX-16#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2335HLX-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 LTC2335HLX-16#PBF?
For technical support, including LTC2335HLX-16#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2335HLX-16#PBF requirements.
6.How does Aetrix verify that LTC2335HLX-16#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2335HLX-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 LTC2335HLX-16#PBF meets industry standards.
7.What is the process for return or replacement of LTC2335HLX-16#PBF?
All LTC2335HLX-16#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2335HLX-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 LTC2335HLX-16#PBF part is unused and in its original packaging.
Return procedure for LTC2335HLX-16#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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