LTC2335HLX-16 - 16-Bit, 1Msps 8-Ch SAR ADC | Analog Devices
MPN： LTC2335HLX-16 ✓ 啟用中LTC2335HLX-16 概覽
What is a SAR ADC? A successive approximation register analog-to-digital converter is a precision ADC architecture that uses a binary search algorithm to convert an analog input to a digital code over N clock cycles. SAR ADCs sit within the hierarchy of ADC types as the mid-speed, mid-resolution choice — faster than delta-sigma but lower power than pipelined — and they are favored for multiplexed multi-channel data acquisition because they settle quickly between conversions.
Key features of the LTC2335HLX-16 include 94.4 dB SNR, ±1 LSB INL guaranteed, no missing codes at 16 bits, an internal precision reference, wide common-mode input range, and flexible SoftSpan input ranges configurable per channel. The integrated 8-to-1 analog input multiplexer with channel-by-channel range selection makes it ideal for systems requiring dynamic range across multiple sensor or signal inputs.
From an architectural perspective, the LTC2335-16 family uses a charge-redistribution DAC array driven by a SAR engine, achieving 16-bit deterministic latency. The wide common-mode input range simplifies front-end signal conditioning when digitizing differential signals riding on high-voltage rails — a common requirement in industrial control, power-line monitoring, and instrumentation front ends.
Typical applications include multichannel data acquisition systems, programmable logic controllers, industrial process control, power-line monitoring, and instrumentation requiring wide dynamic range across multiple input channels. The 1 Msps throughput combined with eight input channels makes it attractive for simultaneous-sampling-adjacent designs and time-multiplexed high-voltage measurement systems.
When designing with this device, place the bypass capacitors directly adjacent to the analog and reference supply pins. Decouple the OVDD logic supply separately from the analog supplies, and respect the absolute maximum ratings on analog inputs to avoid latch-up.
This page consolidates distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, with all data cross-referenced against the LTC2335-16 datasheet.
直接替換替代品，適用於 LTC2335HLX-16 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： LTC2335HLX-16 （相同外形與佔位） — 差異在於 Operating Temperature Range, Package, RoHS Status, Number of Channels, Input Type.
LTC2335HLX-16#PBF
✅ 直接替換📋 參考替代品（不在目錄中）
LTC2335ILX-16#PBF
✅ 直接替換聯絡詢價
查看資料表 →LTC2335CLX-16
✅ 直接替換聯絡詢價
查看資料表 →LTC2335HLX-16 最大額定值與電氣特性
| 解析度 | 16 bits |
| Number of Channels | 8 (input) / 1 (ADC) |
| ADC Architecture | SAR (Successive Approximation Register) |
| 取樣率 | 1 Msps |
| Differential Input Range | ±10.24 V |
| INL (積分非線性) | ±1 LSB |
| SNR | 94.4 dB |
| Missing Codes | None at 16 bits |
| Common-Mode Input Range | Wide (SoftSpan configurable) |
| Number of Analog Inputs | 8 |
| Analog Supply Voltage | 5 V |
| Logic Supply (OVDD) | Flexible (per interface) |
| Internal Reference | Yes (integrated precision reference) |
| 介面 | SPI / serial (per datasheet) |
| 封裝 | 48-LQFP (7x7 mm) |
| 工作溫度範圍 | -40C to +125C (H grade) |
| 安裝類型 | Surface Mount |
| RoHS 狀態 | Compliant (#PBF suffix) |
LTC2335HLX-16 48-lqfp (7x7 mm) 腳位配置指南
LTC2335HLX-16（48-lqfp (7x7 mm) 封裝）的腳位配置。 此類比元件具有輸入、輸出與電源腳位。偏移歸零、補償與致能腳位配置請參閱製造商資料表。適用於訊號調理與放大器電路。
無詳細腳位定義資料： LTC2335HLX-16.
請參閱 資料表 以查看完整腳位配置。
典型應用
LTC2335HLX-16 適用於 6 應用s: Multichannel Data Acquisition Systems, Industrial Process Control, Power-Line Monitoring, Programmable Logic Controllers (PLC), Test and Measurement Instrumentation, Medical Monitoring and Diagnostic Equipment.
Multichannel Data Acquisition Systems
The LTC2335HLX-16 is purpose-built for multichannel data acquisition systems that monitor multiple analog signals with high common-mode offsets. Its integrated 8-to-1 multiplexer and 1 Msps SAR throughput allow sequential channel sampling at >100 kHz per channel rate, while 94.4 dB SNR preserves wide dynamic range across all channels. The wide common-mode input range eliminates the need for level-shifting front-ends in differential signals sitting on elevated rails, simplifying the analog chain. The 48-LQFP-EP footprint supports dense board layouts and provides good thermal performance at full sampling rate. The internal precision reference eliminates external reference drift concerns in long-duration acquisitions.
推薦
Industrial Process Control
In industrial process control loops, the LTC2335HLX-16 digitizes analog signals from multiple sensors (pressure, temperature, flow, level) at 16-bit precision with 1 Msps aggregate throughput. The SoftSpan input ranges match common industrial signal levels (±5 V, ±10 V, 0-10 V) without external conditioning. The -40C to +125C H-grade temperature rating supports cabinet-mounted installations near power electronics and motor drives. The internal reference and per-channel range selection reduce calibration overhead in production. SPI-compatible serial interface simplifies connection to industrial MCUs like Cortex-M4 devices.
推薦
Power-Line Monitoring
Power-line monitoring applications benefit from the LTC2335HLX-16's ±10.24 V differential input range, which directly digitizes voltage and current signals from PT/CT transducers without instrumentation amplifiers. The 94.4 dB SNR captures harmonics well beyond the 50th harmonic of 50/60 Hz mains, supporting advanced power-quality analysis. Wide common-mode tolerance handles the high common-mode voltages present in three-phase systems. Eight multiplexed channels monitor all three phase voltages and currents plus neutral in a single ADC. The 48-LQFP package withstands industrial thermal environments and supports conformal coating assemblies.
推薦
Programmable Logic Controllers (PLC)
PLC analog input modules use the LTC2335HLX-16 to digitize field signals from thermocouples, RTDs, and 4-20 mA loops into a single 16-bit precision conversion channel. The 8-channel multiplexer supports 8 analog inputs per ADC, while multiple ADC chips can be cascaded with synchronized conversion for higher-channel-count modules. Per-channel SoftSpan ranges let one module accept mixed signal types — bipolar ±10 V, unipolar 0-10 V, and 4-20 mA current loops — without hardware reconfig. The H-grade temperature range handles the cabinet thermal environment near IGBT drivers.
推薦
Test and Measurement Instrumentation
Bench-top and rack-mounted test and measurement instruments use the LTC2335HLX-16 for digitizing multiple test points at full 16-bit precision with 1 Msps aggregate throughput. The 94.4 dB SNR enables oscilloscope-grade dynamic range on repetitive waveforms captured by time-multiplexed channels. The internal precision reference reduces the calibration burden for bench instruments shipped to field service. Wide common-mode input range and differential inputs handle floating measurements relative to ground-referenced probes. The 48-LQFP package is easy to rework during development compared to BGA alternatives.
推薦
Medical Monitoring and Diagnostic Equipment
Medical monitoring equipment uses the LTC2335HLX-16 to digitize patient-side analog signals (ECG, EEG, EMG, SpO2) and diagnostic instrument channels with true 16-bit fidelity. The 94.4 dB SNR preserves the low-amplitude detail in electrophysiological signals critical for automated analysis. The wide common-mode input range accepts electrode-referred signals with large DC offsets. Eight multiplexed inputs cover patient-monitor channel counts typically required for multi-lead ECG and EEG. The internal reference supports long-duration patient monitoring without recalibration drift.
推薦
推薦產品摘要
工程參考資料，適用於 LTC2335HLX-16 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | LTC2335HLX-16#PBF | LTC2335ILX-16 | LTC2335CLX-16 |
|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 48-LQFP (7x7) | 48-LQFP (7x7) - same | 48-LQFP (7x7) - same | 48-LQFP (7x7) - same |
| Resolution | 16 bits | 16 bits | 16 bits | 16 bits |
| Sampling Rate | 1 Msps | 1 Msps | 1 Msps | 1 Msps |
| Channels | 8 (input) / 1 (ADC) | 8 / 1 | 8 / 1 | 8 / 1 |
| Differential Input Range | ±10.24 V | ±10.24 V | ±10.24 V | ±10.24 V |
| INL | ±1 LSB | ±1 LSB | ±1 LSB | ±1 LSB |
| Operating Temperature | -40C to +125C (H grade) | -40C to +125C | -40C to +85C (I grade) | 0C to +70C (C grade) |
主要差異化特點
- Only multiplexed SAR ADC in LTC2335 family with H-grade -40C to +125C rating (對比LTC2335ILX-16)
- RoHS-compliant variant available in same footprint (對比LTC2335HLX-16#PBF)
- H-grade wider temperature range than commercial C-grade (對比LTC2335CLX-16)
設計說明
Place the 0.1uF and 10uF bypass capacitors as close as possible to the analog and reference supply pins, with the 0.1uF unit nearest to the package. Use a separate analog ground plane tied to a single-point star ground to keep digital switching currents from corrupting the analog return path. Keep the analog input traces short and symmetric for the differential pair to preserve SNR at full throughput.
Drive the LTC2335HLX-16 analog inputs with the LT1358 or similar low-noise, fast-settling amplifier recommended in the datasheet typical application circuit. Use a wide-bandwidth driver if the input signal has high-frequency content beyond the bandwidth of the SAR aperture. Place a lowpass filter between the driver output and the ADC input to limit wideband noise below the Nyquist rate of 1 Msps.
Do not exceed the absolute maximum analog input voltage — the LTC2335HLX-16 digitizes up to ±10.24 V differential with appropriate supplies, but overvoltage transients can latch-up the input ESD structures. Ensure the CNV (convert) and CLK signals are routed away from analog input traces to minimize digital crosstalk into the SAR comparator. Avoid powering up without the analog supply present, which violates the supply-sequencing requirement stated in the datasheet absolute maximum ratings.
合規資訊
RoHS compliant per #PBF suffix on manufacturer and distributor listings. Not AEC-Q100 qualified - this is an industrial-grade ADC. Halogen-free status not specified in the verified web data.
