ADS8383IBPFBRG4 - 18-bit 500kSPS Parallel SAR ADC | TI
MPN： ADS8383IBPFBRG4 ✓ 啟用中ADS8383IBPFBRG4 概覽
直接替換替代品，適用於 ADS8383IBPFBRG4 — 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： ADS8383IBPFBRG4 （相同外形與佔位） — 差異在於 Architecture, Latency, Package, Sample Rate, Resolution.
ADS8383IBPFBR
✅ 直接替換聯絡詢價
查看資料表 →ADS8383IBPFBTG4
✅ 直接替換📋 參考替代品（不在目錄中）
ADS8383IBPFBT
✅ 直接替換📋 參考替代品（不在目錄中）
ADS8381IBPFBR
✅ 直接替換聯絡詢價
查看資料表 →ADS8383IBPFBRG4 最大額定值與電氣特性
| 解析度 | 18 bits |
| Sample Rate | 500 kSPS (580 kSPS per Mouser listing) |
| Architecture | Successive Approximation Register (SAR) |
| Number of Input Channels | 1 |
| Input Range | Unipolar, 0 V to VREF |
| Conversion Time | 1.52 us (typical) |
| Latency | Zero (SAR - no pipeline delay) |
| 介面 | Parallel, 18-/16-/8-bit selectable |
| Analog Supply Voltage | 5 V (single supply) |
| Digital I/O Supply | 3.3 V or 5 V |
| 工作溫度 | -40C to +85C (industrial) |
| 封裝 | 48-TQFP (PFP), 7x7 mm |
| 安裝類型 | Surface Mount |
| RoHS 狀態 | Compliant |
| Reference | External (recommended up to 4.096 V) |
ADS8383IBPFBRG4 48-tqfp (pfp), 7x7 mm 腳位配置指南
ADS8383IBPFBRG4（48-tqfp (pfp), 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： ADS8383IBPFBRG4.
請參閱 資料表 以查看完整腳位配置。
典型應用
ADS8383IBPFBRG4 適用於 7 應用s: Industrial Process Control and Data Acquisition, Medical Instrumentation Front-End, Portable Test and Measurement Equipment, Vibration and Acoustic Analysis Systems, Precision Weigh Scales and Load Cell Readout, Optical and Imaging Sensor Digitization, Communication and Network Test Equipment.
Industrial Process Control and Data Acquisition
The ADS8383IBPFBRG4's 18-bit no-missing-code resolution and 500 kSPS throughput make it ideal for high-precision industrial data-acquisition front-ends and closed-loop process controllers. Its zero-latency SAR architecture ensures conversions are deterministic without pipeline delay, critical for synchronizing to control loops and capturing transient events. The unipolar 0 V to VREF input (with external reference up to 4.096 V) accepts 4-20 mA current-loop voltage dropouts or sensor-bridge outputs after scaling, while the parallel 18-/16-/8-bit bus simplifies interfacing with industrial microcontrollers. Compared with sigma-delta ADCs, the SAR's 1.52 us conversion time minimizes settling error at multiplexed inputs. Industrial-grade -40C to +85C operation tolerates factory-floor temperatures without derating.
推薦
Medical Instrumentation Front-End
The 18-bit dynamic range and zero-latency SAR conversion of the ADS8383IBPFBRG4 suit high-precision diagnostic medical instruments such as patient monitors, infusion-pump feedback loops, and analytical chemistry equipment. The 500 kSPS throughput captures physiological waveforms (ECG, EMG, pulse oximetry) and chemistry sensors with 18-bit precision across the -40C to +85C biomedical-industrial range. Internal 5V-to-3.3V I/O level shifting enables direct connection to 3.3V microcontrollers and DSPs common in portable medical devices. Compared with low-speed sigma-delta ADCs, the SAR topology provides zero latency essential for closed-loop safety systems, where stale data could compromise patient safety.
推薦
Portable Test and Measurement Equipment
Portable digital multimeters, oscilloscope plug-in modules, and precision bench instruments benefit from the ADS8383IBPFBRG4's combination of 18-bit resolution, 500 kSPS throughput and wide input range. The SAR architecture's zero latency delivers measurements within one conversion cycle (1.52 us), providing the deterministic timing required for synchronized acquisition. The single +5V analog supply simplifies multi-channel design for handheld instruments that run on battery. The 48-TQFP package is small enough (49 mm^2) for compact handheld form factors, while the exposed-pad thermal dissipation path avoids the need for an external heatsink at ~110 mW power dissipation typical.
推薦
Vibration and Acoustic Analysis Systems
Industrial vibration-monitoring systems, audio analyzers, and condition-monitoring instrumentation benefit from the ADS8383IBPFBRG4's 500 kSPS capture rate and 18-bit dynamic range. The parallel output bus supports DMA-burst transfer to a DSP or FPGA for real-time FFT processing. Industrial-grade operation to +85C handles gearbox, motor housing, and process-equipment deployment. Zero-latency conversion preserves phase information required for vibration signature analysis, while the unipolar 0-VREF input accepts transducer signals (ICP accelerometers, microphones) after AC-coupled amplification and scaling.
推薦
Precision Weigh Scales and Load Cell Readout
Precision load-cell readout modules and industrial weighing systems leverage the ADS8383IBPFBRG4's 18-bit no-missing-code resolution to digitize strain-gauge bridge outputs down to microvolt levels. The unipolar input accepts 0 V to VREF (up to 4.096 V) signals directly from bridge-conditioned instrumentation amplifiers, supporting 100,000+ count resolution weighing platforms. The 48-TQFP enables compact PCB layouts in metrology-grade bench scales. SAR's zero-latency conversion avoids pipeline-delay bias in ratiometric weigh-measurement applications, while industrial temperature tolerance ensures calibration stability across -40C to +85C operation.
推薦
Optical and Imaging Sensor Digitization
Precision optical encoders, spectroscopy sensor front-ends, and industrial line-scan imaging modules rely on the ADS8383IBPFBRG4's 500 kSPS rate to digitize photodiode amplifier outputs at 18-bit resolution. The parallel output bus directly drives FPGA pipelined pixel preprocessing buffers for real-time imaging. The 5V analog rail supports photodiode transimpedance amplifier designs operating from a low-noise +12/+5V supply. Industrial-grade temperature range accommodates factory-floor and outdoor instrumentation. Compared with sigma-delta ADCs, the SAR's zero-latency architecture preserves timing accuracy in scanning spectrometers, ensuring sharp alignment of pixel and ADC sample windows.
推薦
Communication and Network Test Equipment
RF network analyzers, spectrum analyzer IF digitizers, and optical-line test gear benefit from the ADS8383IBPFBRG4's low-latency SAR conversion when sampling intermediate-frequency signals of up to ~200 kHz bandwidth. Zero pipeline delay simplifies trigger gating between DUT stimulus and capture, essential for accurate S-parameter measurements. Industrial temperature tolerance allows deployment in production ATE racks and field testers. The parallel output directly feeds DSPs and FPGAs used in coherent demodulation. Compared with sigma-delta ADCs, the SAR provides more deterministic triggering and lower group delay across the entire input bandwidth.
推薦
推薦產品摘要
工程參考資料，適用於 ADS8383IBPFBRG4 — 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 | ADS8383IBPFBR | ADS8383IBPFBTG4 | ADS8383IBPFBT | ADS8381IBPFBR |
|---|---|---|---|---|---|
| Package | 48-TQFP (PFP), 7x7 mm | 48-TQFP (PFP) - same | 48-TQFP (PFP) - same | 48-TQFP (PFP) - same | 48-TQFP (PFP) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Resolution | 18-bit | 18-bit | 18-bit | 18-bit | 12-bit |
| Sample Rate | 500 kSPS | 500 kSPS | 500 kSPS | 500 kSPS | 500 kSPS |
| Architecture | SAR | SAR | SAR | SAR | SAR |
| Interface | Parallel 18/16/8-bit | Parallel 18/16/8-bit | Parallel 18/16/8-bit | Parallel 18/16/8-bit | Parallel 12-bit |
| Input Range | Unipolar 0 to VREF | Unipolar 0 to VREF | Unipolar 0 to VREF | Unipolar 0 to VREF | Unipolar 0 to VREF |
| Latency | Zero (SAR) | Zero | Zero | Zero | Zero |
主要差異化特點
- Genuine 18-bit no-missing-code at 500 kSPS (對比ADS8381IBPFBR)
- Versatile 18-/16-/8-bit parallel bus (對比ADS8382IRHPR)
- Zero pipeline latency SAR architecture (對比Sigma-delta ADCs (e.g. ADS131A04))
設計說明
Decouple the +5V AVCC with 10 uF tantalum or ceramic + 0.1 uF ceramic placed as close to pin 1 of the 48-TQFP as possible. Separate analog and digital grounds with a single star connection directly under the exposed pad or near the device's GND pin. The reference input (REF) requires a low-impedance buffer (e.g. OPA350) to drive multiple pins; bypass REF with 10 uF + 0.1 uF to ground.
Do not drive the parallel DB[17:0] bus at >1 MHz with capacitive loads exceeding 25 pF without external bus buffers - the part's output drivers are designed for moderate fan-out. When operating in 8-bit bus mode (BYTE=HIGH), ensure the host reads DB[7:0] for three CS-burst cycles within 1 conversion period or data loss will occur.
Keep analog input traces short and symmetric. The 48-TQFP package places IN on the left side and GND on the right side; route signal-in traces on the top layer with continuous ground plane under them. Use guard rings around the analog input path to isolate it from the parallel digital switching bus (DB15:0). For best THD, keep analog ground impedance below 0.1 ohm.
合規資訊
RoHS compliant (RG4 suffix indicates Pb-free reel per TI ordering nomenclature). Operating range is industrial -40C to +85C; not AEC-Q100 qualified - choose Q1 suffix variants for automotive.
