ADS8382IRHPR - 18-bit 600kSPS SAR ADC | Texas Instruments
부품 번호: ADS8382IRHPR ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $15.5 | $15.50 |
| 10 | $13.95 | $139.50 |
| 100 | $12.4 | $1,240.00 |
| 500 | $10.85 | $5,425.00 |
| 1,000 | $9.65 | $9,650.00 |
ADS8382IRHPR 개요
A SAR ADC is a precision data converter that uses a charge-redistribution capacitor array and a successive-approximation algorithm to digitize an analog input one bit per clock cycle. SAR converters sit within the broader taxonomy of analog-to-digital converters -> data converters -> signal-chain ICs -> mixed-signal ICs -> semiconductors. The pseudo-bipolar, fully differential input topology of the ADS8382 allows direct digitization of signals that swing around a common-mode voltage, which is useful for industrial sensors and instrumentation front-ends.
Key headline specifications include 18-bit resolution, 600 kSPS sample rate, 1.16 microsecond conversion time, and 0.0019 percent integral nonlinearity (INL). The device supports both external and internal voltage references and provides a serial interface that simplifies board routing. Its micropower architecture balances throughput with low power dissipation, making it appropriate for multi-channel data-acquisition systems where channel density and thermal budget matter.
The internal architecture is a capacitor-based SAR core with inherent track-and-hold, followed by a digital correction engine that achieves the specified linearity. The high-speed CMOS serial interface reduces pin count compared with parallel-output ADCs of the same speed class, leaving more board real-estate for analog front-end conditioning. The RHP-28 6x6 mm QFN package has a low thermal resistance suitable for the power level of a 600 kSPS SAR.
Typical applications include industrial process control, multichannel data-acquisition boards, medical instrumentation such as patient monitors, optical sensor front-ends, and precision weigh scales. The serial interface is also convenient for isolated data-acquisition designs where galvanic isolation favors fewer digital traces.
When designing with the ADS8382IRHPR, place the 0.1 microfar decoupling capacitor as close as possible to the AVDD pin and respect the reference decoupling topology recommended in the manufacturer datasheet. Designers should also consider using the ADS8382IRHPT (tape-and-reel variant) and ADS8382IBRHPR (extended temperature grade) as drop-in alternates within the same footprint.
This page synthesizes distributor pricing, drop-in alternates, and practical design notes not found in the manufacturer datasheet alone.
드롭인 대체품: ADS8382IRHPR — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: ADS8382IRHPR (동일 폼 팩터 및 풋프린트) — 차이점: Package, Input Type, Sample Rate, Conversion Time, Data Interface.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
ADS8382IRHPT
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
ADS8382IBRHPR
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
ADS8382IBRHPT
✅ 드롭인 ⚠️ 사양 미검증📋 참조 대체품 (카탈로그에 없음)
ADS8482IRGZR
✅ 드롭인✓ 재고 있음
$12.32 / 개
데이터시트 보기 →ADS8472IRGZR
✅ 드롭인✓ 재고 있음
$8.5 / 개
데이터시트 보기 →ADS8382IRHPR 최대 정격 & 전기적 특성
| 분해능 | 18 bits |
| Sample Rate | 600 kSPS |
| Conversion Time | 1.16 microsecond (approx.) |
| Number of Channels | 1 input |
| Architecture | SAR with inherent sample-and-hold |
| Input Type | Fully differential pseudo-bipolar |
| Integral Nonlinearity (INL) | 0.0019 % (approx.) |
| Data Interface | Serial (CMOS, up to 40 MHz SCLK) |
| Analog Supply Voltage | 5 V (typical single supply) |
| Reference | External or internal |
| 동작 온도 | -40C to +85C |
| 패키지 | 28-pin QFN (RHP) 6x6 mm with exposed pad |
| 실장 유형 | Surface Mount |
| Packaging | Tape & Reel (TR) |
| RoHS 상태 | Compliant |
ADS8382IRHPR 핀 구성
| 핀 1 | REFP — Reference capacitor positive terminal |
| 핀 2 | REFN — Reference capacitor negative terminal |
| 핀 3 | REFM — Reference mode select |
| 핀 4 | REF — Reference input / output |
| 핀 5 | AVDD — Analog 5V supply |
| 핀 6 | AGND — Analog ground |
| 핀 7 | IN+ — Differential analog input positive |
| 핀 8 | IN- — Differential analog input negative |
| 핀 9 | AVDD — Analog 5V supply |
| 핀 10 | AGND — Analog ground |
| 핀 11 | DGND — Digital ground |
| 핀 12 | DVDD — Digital supply |
| 핀 13 | /CONVST — Conversion start (active low) |
| 핀 14 | /CS — Chip select (active low) |
| 핀 15 | SCLK — Serial clock input |
| 핀 16 | SDO — Serial data output |
| 핀 17 | SDI — Serial data input |
| 핀 18 | TAG — Tag input for output data |
| 핀 19 | BUSY — Conversion busy indicator |
| 핀 20 | RESET — Reset input |
| 핀 21 | PD — Power-down input |
| 핀 22 | NC — Not connected |
| 핀 23 | NC — Not connected |
| 핀 24 | AVDD — Analog 5V supply |
| 핀 25 | AGND — Analog ground |
| 핀 26 | AVDD — Analog 5V supply |
| 핀 27 | AGND — Analog ground |
| 핀 28 | EP — Exposed thermal pad (connect to AGND) |
일반적인 애플리케이션
ADS8382IRHPR 적합 용도: 6 애플리케이션s: Industrial Process Control Data Acquisition, Medical Patient Monitoring Instrumentation, Precision Weigh Scales and Load Cell Digitization, Optical Sensor Front-End Digitization, Multichannel Data Acquisition Modules, Isolated Industrial Sensor Interfaces.
Industrial Process Control Data Acquisition
The ADS8382IRHPR's 18-bit resolution and 600 kSPS throughput match the precision and bandwidth required for industrial process control loops where 4-20 mA sensor signals are digitized for PID control. Its fully differential pseudo-bipolar input rejects common-mode noise from long sensor cables in factory environments, while the serial interface simplifies routing across isolation barriers. The 5-V single-supply operation aligns with industrial 24V-derived rails, and the -40C to +85C temperature range covers cabinet-level deployments. The 0.0019% INL ensures measurement repeatability for closed-loop control.
추천
Medical Patient Monitoring Instrumentation
Medical patient monitors demand low-noise, high-linearity ADCs to digitize ECG, SpO2, and temperature front-ends. The ADS8382IRHPR delivers 18-bit ENOB-grade performance with 0.0019% INL, ensuring measurement fidelity across the dynamic range of bioelectric signals. Its pseudo-bipolar differential input accepts signals biased around a mid-supply common-mode, which is the typical output of ECG instrumentation amplifiers. The 28-QFN package is small enough for portable monitor form factors while the serial interface reduces digital emissions near sensitive analog front ends.
추천
Precision Weigh Scales and Load Cell Digitization
Weigh scales and force-measurement systems require ADCs with high absolute accuracy and very low integral nonlinearity to resolve sub-milligram changes in strain-gauge bridge outputs. The ADS8382IRHPR's 18-bit resolution and tight INL make it well suited for digitizing the low-level differential signals from load cells without requiring expensive 24-bit sigma-delta converters. The 600 kSPS sample rate enables oversampling to push effective resolution beyond the nominal bit count, while the serial interface supports integration with battery-powered scale electronics where every trace counts.
추천
Optical Sensor Front-End Digitization
Photodiode and avalanche-photodiode (APD) front-ends produce low-amplitude currents that benefit from high-resolution differential ADCs. The ADS8382IRHPR's fully differential pseudo-bipolar input accepts transimpedance-amplifier outputs biased around a mid-rail common-mode, while its 600 kSPS rate supports pulsed-light measurements such as LIDAR and time-of-flight receivers. The 18-bit dynamic range enables simultaneous capture of strong and weak return signals without gain switching, simplifying the analog signal chain. The serial interface keeps digital traces minimal near sensitive photodetector preamps.
추천
Multichannel Data Acquisition Modules
Multichannel DAQ cards and PLC analog input modules use a serial-output ADC to reduce digital pin count and ease isolation barrier design. The ADS8382IRHPR's serial interface runs up to 40 MHz SCLK, allowing many converters to share a single SPI bus across isolators without bandwidth bottlenecks. Its 28-QFN footprint is compact enough for high-density analog input cards. With 600 kSPS per channel, a bank of eight multiplexed converters can deliver aggregate throughput well above 100 kSPS per channel for vibration, acoustic, or general-purpose industrial measurements.
추천
Isolated Industrial Sensor Interfaces
Industrial sensors feeding PLCs and motor drives require galvanic isolation for safety and noise immunity. The ADS8382IRHPR's serial interface is well suited for digital isolators because only a few signals (SDO, SCLK, /CS, /CONVST) must cross the barrier, reducing isolator cost and certification complexity. The 5-V supply aligns with the field-side power, while the 600 kSPS rate supports closed-loop control update rates typical of servo drives. Differential pseudo-bipolar input rejects the large common-mode transients found in motor drive environments.
추천
추천 제품 요약
엔지니어링 참조 데이터: ADS8382IRHPR — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | ADS8382IRHPT | ADS8382IBRHPR | ADS8382IBRHPT | ADS8482IRGZR | ADS8472IRGZR |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 28-QFN (RHP) 6x6 mm | 28-QFN (RHP) 6x6 mm - same | 28-QFN (RHP) 6x6 mm - same | 28-QFN (RHP) 6x6 mm - same | 48-QFN - same QFN family | 48-QFN - same QFN family |
| Resolution | 18 bits | 18 bits | 18 bits | 18 bits | 18 bits | 18 bits |
| Sample Rate | 600 kSPS | 600 kSPS | 600 kSPS | 600 kSPS | 1000 kSPS | 1000 kSPS |
| Input Type | Fully differential pseudo-bipolar | Fully differential pseudo-bipolar | Fully differential pseudo-bipolar | Fully differential pseudo-bipolar | Fully differential bipolar | Fully differential bipolar |
| Data Interface | Serial (SPI) | Serial (SPI) | Serial (SPI) | Serial (SPI) | Parallel / byte | Parallel / byte |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C (extended grade) | -40C to +85C (extended grade) | -40C to +85C | -40C to +85C |
| Tape-and-Reel Suffix | R (standard reel) | T (reverse reel) | R (extended grade, standard reel) | T (extended grade, reverse reel) | R (48-QFN, standard reel) | R (48-QFN, standard reel) |
주요 차별점
- True 18-bit resolution at 600 kSPS in serial-output 28-QFN (vs ADS8482IRGZR)
- Fully differential pseudo-bipolar input simplifies sensor front-end (vs ADS8381IBPFBR)
- Multiple suffix variants (I, T, IT) on same die enable drop-in inventory flexibility (vs ADS8382IRHPT)
설계 노트
Decouple the AVDD pin with a 0.1 microfar low-ESR ceramic capacitor placed within 2 mm of the pin, and add a 10 microfar tantalum or ceramic bulk capacitor on each analog rail. The ADS8382IRHPR datasheet recommends a clean analog ground separate from the digital ground, joined at a single point near the IC. Avoid switching supplies in the analog path because the SAR comparator is sensitive to high-frequency rail noise.
Route the serial interface traces (SCLK, SDO, /CS, /CONVST) away from the analog input traces to avoid digital-to-analog coupling. The exposed thermal pad (pin 28) must be soldered to a continuous ground plane with multiple thermal vias to keep junction temperature within limits. Reference decoupling capacitors should be placed close to the REFP and REFN pins with short, direct traces to minimize reference noise and INL degradation.
Do not drive the analog input beyond the absolute input range specified in the datasheet or the input ESD protection will degrade. Ensure the reference voltage is well decoupled and stable during conversion, as reference noise directly appears as conversion noise. When using the internal reference, verify its accuracy over temperature before relying on it for absolute measurements. If absolute gain error matters, use an external precision reference.
규정 준수 정보
RoHS compliant per TI product page. Not AEC-Q100 qualified - this is an industrial-grade converter. Lead-free finish per TI ordering nomenclature.
