ADS1274IPAPT - 24-Bit 144kSPS Quad Delta-Sigma ADC | Texas Instruments
부품 번호: ADS1274IPAPT ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $38.2 | $38.20 |
| 10 | $34.38 | $343.80 |
| 100 | $28.5 | $2,850.00 |
| 250 | $26.1 | $6,525.00 |
| 500 | $24.3 | $12,150.00 |
ADS1274IPAPT 개요
A delta-sigma ADC is a type of oversampling converter that uses a high-frequency modulator followed by digital filtering to achieve very high resolution. The ADS1274 belongs to the wider category of precision ADCs, which sit in the signal chain hierarchy of analog front end -> analog-to-digital conversion -> digital processing. It is specifically optimized for applications that demand both wide bandwidth and excellent DC stability, two characteristics that are traditionally mutually exclusive in sigma-delta designs.
Key features include four simultaneously-sampled differential inputs, selectable operating modes (High-Resolution, Low-Power, High-Speed, and Audio), a flexible serial interface (SPI-compatible or frame-sync), and an internal PLL for clock generation from an external reference. The wideband digital filter delivers low passband droop, eliminating the need for post-equalization in frequency-sensitive applications such as vibration analysis.
Architecturally, the ADS1274 employs a 4th-order chopper-stabilized modulator per channel with proprietary decimation filtering. This design eliminates the traditional trade-off between DC precision (low drift, high DC CMRR) and AC performance (wide bandwidth, flat passband), making the part suitable for multisensor systems where each channel must accurately capture both static and dynamic signals without per-channel calibration.
Typical applications include industrial vibration monitoring, condition monitoring of rotating machinery, seismic data acquisition, multi-channel data loggers, audio test equipment, and power-quality analyzers. The simultaneous sampling architecture preserves phase relationships between channels, which is critical for modal analysis in structural health monitoring.
When designing with the ADS1274IPAPT, pay attention to PCB layout: the exposed thermal pad must be soldered to a ground plane with multiple thermal vias to dissipate heat from the digital core, and the analog supply (AVDD) should be heavily decoupled with separate 10 uF bulk and 100 nF ceramic capacitors close to the pin. Use a low-jitter master clock for best noise performance at maximum data rate.
This page synthesizes distributor pricing, parametric comparison tables, drop-in alternatives, and practical design notes not found on the standalone TI datasheet, helping engineers shorten the selection and qualification cycle for high-channel-count precision acquisition systems.
드롭인 대체품: ADS1274IPAPT — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: ADS1274IPAPT (동일 폼 팩터 및 풋프린트) — 차이점: Number of Channels, Package, Resolution.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
ADS1274IPAPR
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
ADS1274IPAPTG4
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
ADS1274IPAP
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
ADS1278IPAP
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
ADS1278IPAPR
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
ADS1274IPAPT 최대 정격 & 전기적 특성
| 분해능 | 24 bits |
| Number of Channels | 4 |
| Sampling Architecture | Simultaneous sampling, 4th-order delta-sigma modulator |
| Maximum Data Rate (per channel) | 144 kSPS |
| Minimum Data Rate | 105 kSPS (High-Speed mode) |
| SNR (High-Resolution mode) | 111 dB |
| THD | -108 dB |
| Usable Bandwidth | 62 kHz |
| Offset Drift | 0.8 uV/°C |
| Analog Supply Voltage (AVDD) | +5 V (typical) |
| Digital Supply Voltage (DVDD) | 1.8 V to 3.3 V |
| Analog Input Range | Differential, Vref = 2.5 V |
| 동작 온도 범위 | -40 °C to +125 °C |
| 패키지 | HTQFP-64 (PAP), 10 mm x 10 mm with exposed pad |
| 실장 유형 | Surface Mount |
| MSL (Moisture Sensitivity Level) | MSL3 |
| RoHS 상태 | Compliant |
ADS1274IPAPT htqfp-64 (pap), 10 mm x 10 mm with exposed pad 핀 구성 가이드
ADS1274IPAPT(htqfp-64 (pap), 10 mm x 10 mm with exposed pad 패키지)의 핀 구성입니다. 이 아날로그 부품에는 입력, 출력, 전원 공급 핀이 있습니다. 오프셋 널, 보상, 인에이블 핀 구성은 제조사 데이터시트를 참조하십시오. 신호 컨디셔닝 및 증폭기 회로에 이상적입니다.
다음에 대한 상세 핀아웃 데이터 없음: ADS1274IPAPT.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
ADS1274IPAPT 적합 용도: 6 애플리케이션s: Industrial Vibration Monitoring, Seismic Data Acquisition, Audio Test & Measurement, Power Quality Analyzers, Multi-Channel Data Logger, Structural Health Monitoring.
Industrial Vibration Monitoring
The ADS1274IPAPT's 4 simultaneous-sampled channels and 62 kHz bandwidth make it ideal for multi-axis IEPE accelerometer-based vibration monitoring on motors, pumps, bearings, and gearboxes. Its 0.8 uV/°C offset drift ensures DC-stable baseline readings, while -108 dB THD preserves the integrity of harmonic signatures used in FFT-based fault diagnosis. Designers typically pair the part with OPA1612 op-amps for the analog front end and feed the serial output to a DSP for envelope analysis.
추천
Seismic Data Acquisition
For seismic exploration, the ADS1274IPAPT provides 111 dB SNR and 24-bit resolution that captures weak broadband signals down to sub-Hz frequencies. The 4-channel simultaneous sampling preserves the phase relationships between geophone strings, enabling accurate velocity modeling. Its low noise floor across the DC-to-62 kHz band removes the need for separate DC precision and AC bandwidth paths, simplifying the field acquisition module.
추천
Audio Test & Measurement
The -108 dB THD and 111 dB SNR position the ADS1274IPAPT for high-fidelity audio analyzers and production-line headphone/speaker testers. Audio mode delivers optimum dynamic range across the 20 Hz to 20 kHz band, while the wide flat passband avoids the sinc droop that would otherwise require post-equalization. Engineers use the four channels for stereo-plus-monitor or 4-wire measurement of differential speaker loads.
추천
Power Quality Analyzers
The 144 kSPS data rate and 62 kHz bandwidth capture harmonics up to the 50th order of a 50/60 Hz fundamental, meeting IEC 61000-4-7 power-quality instrument requirements. Simultaneous sampling of voltage and current channels preserves the phase angle needed for accurate active/reactive power computation. Low 0.8 uV/°C drift eliminates temperature-induced calibration drift in field-deployed PQ meters.
추천
Multi-Channel Data Logger
For thermocouple, strain-gauge, or load-cell data loggers with 4 channels, the ADS1274IPAPT provides industrial-grade DC accuracy plus enough bandwidth for transient capture. Simultaneous sampling eliminates the inter-channel skew that plagues multiplexed ADCs in waveform recording. The exposed-pad HTQFP-64 package simplifies thermal management in compact IP65 enclosures used in factory floor installations.
추천
Structural Health Monitoring
The ADS1274IPAPT is widely used in bridge, building, and aircraft structural health monitoring systems where multiple strain gauges and accelerometers must be sampled simultaneously to capture dynamic structural responses. With 0.8 uV/°C drift and 111 dB SNR, it preserves the precision required for modal-frequency tracking over months of unattended operation. The wide operating temperature range supports outdoor and harsh-environment deployments.
추천
추천 제품 요약
엔지니어링 참조 데이터: ADS1274IPAPT — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | ADS1274IPAPR | ADS1274IPAPTG4 | ADS1274IPAP | ADS1278IPAP | ADS1278IPAPR |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | HTQFP-64 (PAP) 10x10 mm | HTQFP-64 (PAP) 10x10 mm - same | HTQFP-64 (PAP) 10x10 mm - same | HTQFP-64 (PAP) 10x10 mm - same | HTQFP-64 (PAP) 10x10 mm - same | HTQFP-64 (PAP) 10x10 mm - same |
| Resolution | 24 bits | 24 bits | 24 bits | 24 bits | 24 bits | 24 bits |
| Number of Channels | 4 | 4 | 4 | 4 | 8 | 8 |
| Max Data Rate | 144 kSPS | 144 kSPS | 144 kSPS | 144 kSPS | 144 kSPS | 144 kSPS |
| SNR (High-Res mode) | 111 dB | 111 dB | 111 dB | 111 dB | 111 dB | 111 dB |
| Operating Temperature | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +125 °C |
| Packaging Format | Tape & Reel, 250 pcs | Tape & Reel, 1000 pcs | Tape & Reel, 250 pcs | Tray | Tape & Reel, 250 pcs | Tape & Reel, 1000 pcs |
| RoHS | Compliant | Compliant | Compliant (green) | Compliant | Compliant | Compliant |
주요 차별점
- Highest channel-count simultaneous sampling in TI's 24-bit ADC portfolio (vs ADS1258 (16-channel multiplexed))
- Wide flat passband without sinc droop (vs ADS1174 (16-bit predecessor))
- Same package as ADS1278 for scalable designs (vs Discrete multi-ADC solutions)
설계 노트
The exposed thermal pad on the PAP package must be soldered to a top-layer ground pour with multiple thermal vias (typically 9 to 16, 0.3 mm drill) to a continuous ground plane below. This serves both as the chip's primary ground connection and as the heat dissipation path for the 280 mW internal dissipation at full data rate. Without adequate thermal vias the junction can rise beyond the 125 °C rating in sealed enclosures.
Use separate AVDD (5 V analog) and DVDD (1.8 V to 3.3 V digital) regulators. Place a 10 uF X7R bulk and 100 nF NP0/C0G ceramic on each AVDD pin, located within 2 mm of the pin. Add a ferrite bead or 10 ohm resistor between AVDD and DVDD grounds to prevent digital return currents from corrupting the analog ground reference. Low-noise LDOs such as the TPS7A4701 are recommended for AVDD.
Route the four differential analog input pairs as tightly coupled, length-matched traces on the top layer with a continuous ground plane beneath. The input common-mode voltage is set by the VBIAS pin and should be heavily bypassed. Keep analog and digital traces separated by at least 3 mm and avoid routing the serial digital output (DOUT) directly above the analog input traces to prevent digital-to-analog coupling.
Operating mode (High-Resolution, Low-Power, High-Speed, Audio) is latched at power-up via the FORMAT/SPEED pins; it cannot be changed at runtime without a reset. Choosing the wrong mode for your bandwidth/noise/power budget forces a board rework. Also note that the maximum clock frequency of 32.768 MHz corresponds to 144 kSPS in High-Speed mode; using a lower-frequency crystal in High-Resolution mode reduces data rate accordingly.
규정 준수 정보
RoHS and REACH compliant per TI product page. G4 suffix variants (e.g. ADS1274IPAPTG4) specifically designate green/RoHS-only lead finish. Not AEC-Q100 qualified - choose ADS1274-Q1 suffix for automotive.
