LTC2335ILX-16#PBF - 16-Bit 1Msps 8-CH SAR ADC | Analog Devices
N.º de pieza: LTC2335ILX-16#PBF ✓ Activo| Cant. | Precio unitario | 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 Descripción general
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.
Alternativas directas para LTC2335ILX-16#PBF — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con LTC2335ILX-16#PBF (mismo factor de forma y huella) — difiere en Internal Reference, Operating Temperature Range, RoHS Status, Package, Resolution.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
LTC2335ILX-18#PBF
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
LTC2335HLX-16#PBF
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
LTC2335ILX-16
✅ Sustitución directa✓ En stock
$12.4 / unidad
Ver hoja de datos →LTC2335HLX-18#PBF
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
LTC2335ILX-16#PBF Valores máximos y características eléctricas
| Manufacturer | Analog Devices Inc. |
| Part Number | LTC2335ILX-16#PBF |
| Converter Type | SAR ADC, 8-channel multiplexed |
| Resolución | 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 |
| Corriente de alimentación | 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 |
| Encapsulado | 48-pin LQFP (7x7 mm) |
| Rango de temperatura de funcionamiento | -40C to +85C (I grade) |
| Tipo de montaje | Surface Mount |
| Estado RoHS | Compliant |
| Lead-Free | Yes (#PBF suffix) |
Configuración de pines de LTC2335ILX-16#PBF
| Pin 1 | IN0+ — Differential analog input 0, non-inverting |
| Pin 2 | IN0- — Differential analog input 0, inverting |
| Pin 3 | IN1+ — Differential analog input 1, non-inverting |
| Pin 4 | IN1- — Differential analog input 1, inverting |
| Pin 5 | IN2+ — Differential analog input 2, non-inverting |
| Pin 6 | IN2- — Differential analog input 2, inverting |
| Pin 7 | IN3+ — Differential analog input 3, non-inverting |
| Pin 8 | IN3- — Differential analog input 3, inverting |
| Pin 9 | IN4+ — Differential analog input 4, non-inverting |
| Pin 10 | IN4- — Differential analog input 4, inverting |
| Pin 11 | IN5+ — Differential analog input 5, non-inverting |
| Pin 12 | IN5- — Differential analog input 5, inverting |
| Pin 13 | IN6+ — Differential analog input 6, non-inverting |
| Pin 14 | IN6- — Differential analog input 6, inverting |
| Pin 15 | IN7+ — Differential analog input 7, non-inverting |
| Pin 16 | IN7- — Differential analog input 7, inverting |
| Pin 17 | REFCAP — Reference bypass capacitor pin |
| Pin 18 | REF — Internal 2.048 V reference output |
| Pin 19 | GND — Analog ground |
| Pin 20 | GND — Analog ground |
| Pin 21 | OVDD — Digital I/O supply |
| Pin 22 | OVDD — Digital I/O supply |
| Pin 23 | GND — Digital ground |
| Pin 24 | SDO — Serial data output |
| Pin 25 | SDI — Serial data input |
| Pin 26 | SCK — Serial clock input |
| Pin 27 | CNV — Convert input (active high) |
| Pin 28 | BUSY — Conversion in progress output |
| Pin 29 | GND — Digital ground |
| Pin 30 | RESET — Reset input |
| Pin 31 | NC — Not connected |
| Pin 32 | NC — Not connected |
| Pin 33 | VCC — 5 V analog supply |
| Pin 34 | VCC — 5 V analog supply |
| Pin 35 | GND — Analog ground |
| Pin 36 | GND — Analog ground |
| Pin 37 | V+IN — High voltage positive supply |
| Pin 38 | V-IN — High voltage negative supply |
| Pin 39 | NC — Not connected |
| Pin 40 | NC — Not connected |
| Pin 41 | NC — Not connected |
| Pin 42 | NC — Not connected |
| Pin 43 | NC — Not connected |
| Pin 44 | NC — Not connected |
| Pin 45 | NC — Not connected |
| Pin 46 | NC — Not connected |
| Pin 47 | NC — Not connected |
| Pin 48 | EP — Exposed pad (thermal/ground) |
Aplicaciones típicas
LTC2335ILX-16#PBF es adecuado para 6 aplicacións: 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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para LTC2335ILX-16#PBF — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | 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) |
Diferenciadores clave
- Wide bipolar ±10.24 V SoftSpan input range eliminates external signal conditioning (frente a LTC2335ILX-18#PBF)
- I-grade (-40C to +85C) commercial/industrial temperature range (frente a LTC2335HLX-16#PBF)
- Integrated 2.048 V reference and buffer reduce BOM and board space (frente a LTC2335ILX-18#PBF)
Notas de diseño
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.
Información de cumplimiento
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.
