LTC2335ILX-16#PBF - 16-Bit 1Msps 8-CH SAR ADC | Analog Devices
Référence : LTC2335ILX-16#PBF ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $28.5 | $28,50 |
| 10 | $25.65 | $256,50 |
| 100 | $22.8 | $2 280,00 |
| 500 | $19.95 | $9 975,00 |
| 1 000 | $17.5 | $17 500,00 |
LTC2335ILX-16#PBF Présentation
SAR ADCs like the LTC2335-16 sit in the converter hierarchy as successive-approximation register converters within the broader analog-to-digital converter family, ultimately part of the data-acquisition and signal-chain integrated circuit category. They are widely chosen over flash or pipeline ADCs when designers need a precise, low-latency, deterministic sampling of multi-channel analog signals at moderate-to-high sample rates without the latency or complexity of pipelined architectures.
Key features of the LTC2335ILX-16#PBF include 16-bit resolution with no missing codes, 1 Msps throughput on a single channel (or 125 kps aggregate when cycling all eight channels), a wide ±10.24 V true bipolar input range through SoftSpan, 90 dB CMRR at 100 kHz, low 1.3 mA supply current at 1 Msps, and an SPI-compatible serial interface for microcontroller or FPGA data retrieval. The internal reference and buffer trim board complexity to a handful of decoupling capacitors and a single programming word per conversion.
Architecturally, the LTC2335-16 pairs a charge-redistribution CDAC with a low-noise comparator and on-chip conversion clock, while an integrated input multiplexer and wide-common-mode front end allow each channel to digitize signals far above or below ground regardless of the supply rail. The SoftSpan configuration lets the designer trade full-scale range against noise for each channel without external resistor networks.
Typical applications include industrial process control and multi-channel PLC analog front ends, high-speed multi-axis data acquisition systems, programmable logic controller (PLC) inputs, optical networking monitoring, and medical instrumentation such as patient monitoring front ends. Its bipolar ±10.24 V input range maps directly to industrial ±10 V transducer outputs without external scaling. When using the LTC2335ILX-16#PBF, design the layout to keep the analog and digital grounds separated by a single-point star and provide a low-impedance 5 V AVCC with 1 µF + 0.1 µF decoupling close to the supply pins.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that complement the manufacturer datasheet rather than duplicating it.
Alternatives de remplacement direct pour LTC2335ILX-16#PBF — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec LTC2335ILX-16#PBF (même facteur de forme et même empreinte) — différant par Internal Reference, Operating Temperature Range, RoHS Status, Package, Resolution.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
LTC2335ILX-18#PBF
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
LTC2335HLX-16#PBF
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
LTC2335ILX-16
✅ Remplacement direct✓ En stock
$12.4 / unité
Voir la fiche technique →LTC2335HLX-18#PBF
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
LTC2335ILX-16#PBF Valeurs maximales et caractéristiques électriques
| Manufacturer | Analog Devices Inc. |
| Part Number | LTC2335ILX-16#PBF |
| Converter Type | SAR ADC, 8-channel multiplexed |
| Résolution | 16 bit |
| Number of Channels | 8 input, 1 SAR core |
| Sample Rate | 1 Msps |
| Input Configuration | Differential, 8 single-ended or 4 differential pairs |
| Input Range (SoftSpan) | ±10.24 V (configurable, bipolar) |
| Common Mode Range | Wide range, extends below GND |
| Supply Voltage (LV) | 5 V |
| Supply Voltage (HV) | Flexible, up to ±15 V analog rails |
| Courant d'alimentation | 1.3 mA at 1 Msps |
| CMRR | 90 dB at 100 kHz |
| Data Interface | SPI-compatible serial |
| Internal Reference | 2.048 V, with integrated buffer |
| Boîtier | 48-pin LQFP (7x7 mm) |
| Plage de température de fonctionnement | -40C to +85C (I grade) |
| Type de montage | Surface Mount |
| Statut RoHS | Compliant |
| Lead-Free | Yes (#PBF suffix) |
Configuration des broches de LTC2335ILX-16#PBF
| Broche 1 | IN0+ — Differential analog input 0, non-inverting |
| Broche 2 | IN0- — Differential analog input 0, inverting |
| Broche 3 | IN1+ — Differential analog input 1, non-inverting |
| Broche 4 | IN1- — Differential analog input 1, inverting |
| Broche 5 | IN2+ — Differential analog input 2, non-inverting |
| Broche 6 | IN2- — Differential analog input 2, inverting |
| Broche 7 | IN3+ — Differential analog input 3, non-inverting |
| Broche 8 | IN3- — Differential analog input 3, inverting |
| Broche 9 | IN4+ — Differential analog input 4, non-inverting |
| Broche 10 | IN4- — Differential analog input 4, inverting |
| Broche 11 | IN5+ — Differential analog input 5, non-inverting |
| Broche 12 | IN5- — Differential analog input 5, inverting |
| Broche 13 | IN6+ — Differential analog input 6, non-inverting |
| Broche 14 | IN6- — Differential analog input 6, inverting |
| Broche 15 | IN7+ — Differential analog input 7, non-inverting |
| Broche 16 | IN7- — Differential analog input 7, inverting |
| Broche 17 | REFCAP — Reference bypass capacitor pin |
| Broche 18 | REF — Internal 2.048 V reference output |
| Broche 19 | GND — Analog ground |
| Broche 20 | GND — Analog ground |
| Broche 21 | OVDD — Digital I/O supply |
| Broche 22 | OVDD — Digital I/O supply |
| Broche 23 | GND — Digital ground |
| Broche 24 | SDO — Serial data output |
| Broche 25 | SDI — Serial data input |
| Broche 26 | SCK — Serial clock input |
| Broche 27 | CNV — Convert input (active high) |
| Broche 28 | BUSY — Conversion in progress output |
| Broche 29 | GND — Digital ground |
| Broche 30 | RESET — Reset input |
| Broche 31 | NC — Not connected |
| Broche 32 | NC — Not connected |
| Broche 33 | VCC — 5 V analog supply |
| Broche 34 | VCC — 5 V analog supply |
| Broche 35 | GND — Analog ground |
| Broche 36 | GND — Analog ground |
| Broche 37 | V+IN — High voltage positive supply |
| Broche 38 | V-IN — High voltage negative supply |
| Broche 39 | NC — Not connected |
| Broche 40 | NC — Not connected |
| Broche 41 | NC — Not connected |
| Broche 42 | NC — Not connected |
| Broche 43 | NC — Not connected |
| Broche 44 | NC — Not connected |
| Broche 45 | NC — Not connected |
| Broche 46 | NC — Not connected |
| Broche 47 | NC — Not connected |
| Broche 48 | EP — Exposed pad (thermal/ground) |
Applications typiques
LTC2335ILX-16#PBF convient pour 6 applications: Industrial Process Control PLC, Multi-Axis Data Acquisition System, Optical Network Power Monitoring, Medical Patient Monitoring Front End, Automotive Sensor Interface, Test and Measurement Instrumentation.
Industrial Process Control PLC
The LTC2335ILX-16#PBF is well suited to multi-channel PLC analog input modules because its 8-channel differential multiplexer handles ±10 V transducer outputs directly without external signal conditioning. Per the Analog Devices datasheet, the SoftSpan feature accepts bipolar inputs up to ±10.24 V with input common-mode range extending below ground, eliminating the need for level-shifting circuits when monitoring 4-20 mA loops through sense resistors. Its 1 Msps throughput allows scan rates above 100 ksps per channel when cycling all eight inputs, and the SPI interface simplifies connection to isolated microcontrollers in industrial backplanes. The 48-LQFP package fits standard PLC front-end board form factors, and its 1.3 mA supply current keeps per-channel power dissipation within the module thermal budget.
Recommandé
Multi-Axis Data Acquisition System
The LTC2335ILX-16#PBF enables high-channel-count data acquisition by sharing one SAR core across 8 inputs at 1 Msps aggregate. Per the LTC2335-16 datasheet, the wide ±10.24 V input range and 90 dB CMRR at 100 kHz allow direct digitization of strain-gauge, thermocouple, and accelerometer outputs with minimal front-end filtering. Its 16-bit no-missing-codes performance preserves measurement linearity across industrial temperature ranges, and the SPI interface streams conversion data directly to an FPGA or DSP for real-time signal processing. Designers typically pair the converter with an anti-alias filter and an external low-drift reference when measurements approach the noise floor. The internal 2.048 V reference and buffer trim bill-of-materials cost for high-channel-count systems.
Recommandé
Optical Network Power Monitoring
The LTC2335ILX-16#PBF monitors multiple photodiode channels in DWDM and CWDM optical line systems where per-channel DC photocurrents must be digitized at low rates but with high absolute accuracy. Per the Analog Devices datasheet, the 8-channel input multiplexer lets one converter replace eight single-channel ADCs in a transceiver module, while the wide-input common-mode range accepts photodiode voltages across the full supply rail. The SPI output reduces pin count versus parallel ADCs, simplifying layout in compact SFP/XFP modules. Designers can leverage the SoftSpan feature to dynamically re-range channels when monitoring both low- and high-power optical receivers without external resistor networks. Combined with its low 1.3 mA supply current, this converter is ideal for dense line-card designs where thermal headroom is limited.
Recommandé
Medical Patient Monitoring Front End
The LTC2335ILX-16#PBF provides multi-parameter analog front-end conversion for bedside patient monitors that digitize ECG, SpO2, temperature, and respiration channels from a single board. Per the LTC2335-16 datasheet, its 16-bit resolution (92 dB SNR) preserves diagnostic signal fidelity across all eight channels, while the wide common-mode input range tolerates electrode offset voltages common in ECG applications. The internal reference and buffer reduce component count on safety-critical medical PCBs, simplifying IEC 60601-1 isolation analysis. The SPI interface pairs cleanly with isolation barriers such as digital isolators to meet patient-leakage requirements. Designers should still add RC antialiasing and right-leg-drive circuitry at the electrode inputs to meet clinical bandwidth and common-mode rejection targets.
Recommandé
Automotive Sensor Interface
The LTC2335ILX-16#PBF can serve as a multi-sensor digitizer in non-safety-critical automotive body and chassis ECUs that aggregate temperature, pressure, and position sensor outputs. Per the Analog Devices datasheet, the 8-channel multiplexer handles direct connection to 0-5 V and ±10 V automotive transducers, while the SoftSpan feature lets one ADC cover the full range of sensor spans without external scaling. Its I-grade -40C to +85C operating range suits under-hood and cabin environments, and the SPI interface links to automotive MCUs over isolated SPI when required. For safety-critical ASIL-D applications, designers should select the AEC-Q100-qualified LTC2335 family variant rather than the standard part. The 48-LQFP package also eases inspection and rework on production automotive lines.
Recommandé
Test and Measurement Instrumentation
The LTC2335ILX-16#PBF is well matched to bench-top and modular instrumentation digitizing up to eight analog channels at 1 Msps aggregate. Per the LTC2335-16 datasheet, the 16-bit resolution with no-missing-codes provides lab-grade DC accuracy, while the differential inputs and 90 dB CMRR reject ground loops between the instrument and the device under test. The SoftSpan feature allows the same hardware to measure mV-level sensor outputs and ±10 V power-rail voltages without changing front-end attenuation. The internal reference and buffer eliminate the need for an external precision reference in portable test equipment where board space is at a premium. Designers typically combine the converter with a precision op-amp input buffer to maintain linearity at full input common-mode range.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour LTC2335ILX-16#PBF — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | LTC2335ILX-18#PBF | LTC2335HLX-16#PBF | LTC2335ILX-16 | LTC2335HLX-18#PBF |
|---|---|---|---|---|---|
| Package | 48-LQFP (7x7) | 48-LQFP (7x7) - same | 48-LQFP (7x7) - same | 48-LQFP (7x7) - same | 48-LQFP (7x7) - same |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 16-bit | 18-bit | 16-bit | 16-bit | 18-bit |
| Sample Rate | 1 Msps | 1 Msps | 1 Msps | 1 Msps | 1 Msps |
| Input Range | ±10.24 V SoftSpan | ±10.24 V SoftSpan | ±10.24 V SoftSpan | ±10.24 V SoftSpan | ±10.24 V SoftSpan |
| Operating Temperature | -40C to +85C (I grade) | -40C to +85C (I grade) | -40C to +125C (H grade) | -40C to +85C (I grade) | -40C to +125C (H grade) |
| Supply Current | 1.3 mA at 1 Msps | 1.3 mA at 1 Msps | 1.3 mA at 1 Msps | 1.3 mA at 1 Msps | 1.3 mA at 1 Msps |
| Lead-Free / RoHS | Yes (#PBF) | Yes (#PBF) | Yes (#PBF) | No (non-PBF suffix) | Yes (#PBF) |
Principaux différenciateurs
- Wide bipolar ±10.24 V SoftSpan input range eliminates external signal conditioning (vs LTC2335ILX-18#PBF)
- I-grade (-40C to +85C) commercial/industrial temperature range (vs LTC2335HLX-16#PBF)
- Integrated 2.048 V reference and buffer reduce BOM and board space (vs LTC2335ILX-18#PBF)
Notes de conception
Estimated: The LTC2335ILX-16#PBF draws approximately 1.3 mA from the 5 V VCC rail at 1 Msps, plus bias current for the high-voltage analog rails used by SoftSpan. Decouple each VCC pin with a 1 µF ceramic + 0.1 µF ceramic pair placed within 5 mm of the pin. For the high-voltage analog rails (V+IN/V-IN), use 10 µF tantalum or polymer capacitors in parallel with 0.1 µF ceramics to handle SoftSpan transient currents during acquisition.
Split the ground plane into analog and digital sections, joined only at a single point near the LTC2335ILX-16#PBF GND pins to prevent digital switching noise from coupling into analog input traces. Route SPI traces (SCK, SDO, CNV, BUSY) over the digital ground only, and keep them at least 5 mm away from the analog input pins to preserve 90 dB CMRR performance.
Do not float any analog input pin of the LTC2335ILX-16#PBF; unused channels should be tied to mid-supply (or the configured common-mode voltage) to prevent charge kick-back from corrupting adjacent active channels. The REFCAP pin requires a 10 µF ceramic bypass for the internal 2.048 V reference to meet datasheet SNR specifications - omitting this capacitor degrades noise performance significantly.
Add an RC antialiasing filter (typically 1 kΩ + 1 nF for 1 Msps / 8-channel operation) at each differential input pair of the LTC2335ILX-16#PBF to suppress out-of-band noise and avoid aliasing. Match the source impedance of the differential driver to preserve CMRR; mismatched impedance on the INx+ and INx- traces reduces 90 dB CMRR specification rapidly at higher frequencies.
Informations de conformité
RoHS compliance indicated by the #PBF suffix in the MPN per Analog Devices ordering information. The LTC2335ILX-16#PBF is not AEC-Q100 qualified; for automotive applications use the AEC-Q100 grade variant in the LTC2335 family. Halogen-free status not explicitly stated in verified data.
