LTC2373HUH-16 - 16-Bit 1Msps 8-Ch SAR ADC, 32-QFN | Analog Devices
부품 번호: LTC2373HUH-16 ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $11.377 | $11.38 |
| 10 | $10.78 | $107.80 |
| 100 | $9.62 | $962.00 |
| 500 | $8.65 | $4,325.00 |
| 1,000 | $7.92 | $7,920.00 |
LTC2373HUH-16 개요
An SAR ADC (successive approximation register analog-to-digital converter) is a type of Nyquist-rate data converter that uses a binary search algorithm with an internal DAC to digitize analog signals in a fixed number of clock cycles. SAR ADCs sit within the broader hierarchy of analog-to-digital conversion technologies alongside flash, pipeline, sigma-delta, and integrating ADCs, occupying a sweet spot between speed and accuracy that makes them the workhorse of industrial instrumentation, motor control, and multi-channel data acquisition systems.
Key specifications include 16-bit resolution, 1 Msps throughput, 96 dB SNR, an onboard low-drift 2.048 V temperature-compensated reference (20 ppm/°C max), and a single-shot capable reference buffer. The device also integrates a configurable 8-channel input multiplexer and a sequencer of depth 16 that lets designers cycle through channels automatically without continuous host intervention. The high-speed SPI-compatible serial interface supports 1.8 V, 2.5 V, 3.3 V, and 5 V logic, enabling direct connection to modern microcontrollers, FPGAs, and DSPs without level shifters.
The SAR architecture delivers zero-latency conversions, deterministic latency per sample, and no pipeline delay, which is critical in closed-loop control systems, multiplexed data acquisition front-ends, and oversampling applications. The wide input common-mode range and flexible input configurations reduce the need for external signal-conditioning circuits, simplifying BOM and shrinking board area.
Typical applications include industrial process control and multi-channel data acquisition systems, programmable logic controller (PLC) analog input modules, medical instrumentation front-ends, optical networking power monitoring, and motor control position/velocity feedback. The combination of 1 Msps speed, 8-channel MUX, and 16-bit accuracy makes the LTC2373HUH-16 particularly well-suited for simultaneous-sampling systems using its internal sequencer.
When designing with this device, ensure adequate bypass capacitance on both AVDD and DVDD rails and place the input RC network close to the analog input pins to minimize charge kickback. The internal 2.048 V reference buffer should be enabled only when needed to minimize quiescent current draw in power-sensitive designs.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design guidance not found in the manufacturer datasheet alone, giving engineers an at-a-glance decision matrix for second-source qualification.
드롭인 대체품: LTC2373HUH-16 — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: LTC2373HUH-16 (동일 폼 팩터 및 풋프린트) — 차이점: Package, Digital Interface, Input Type, Supply Voltage, RoHS Status.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
LTC2373IUH-16#PBF
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
LTC2373CUH-18
✅ 드롭인 ⚠️ 사양 미검증✓ 재고 있음
$17.45 / 개
데이터시트 보기 →LTC2372HUH-18
✅ 드롭인 ⚠️ 사양 미검증✓ 재고 있음
$20.15 / 개
데이터시트 보기 →LTC2372CUH-18
✅ 드롭인 ⚠️ 사양 미검증✓ 재고 있음
$10.85 / 개
데이터시트 보기 →LTC2344CUH-18
✅ 드롭인 ⚠️ 사양 미검증✓ 재고 있음
$18.2 / 개
데이터시트 보기 →LTC2341HUH-18
✅ 드롭인 ⚠️ 사양 미검증✓ 재고 있음
$24.95 / 개
데이터시트 보기 →LTC2373HUH-16 최대 정격 & 전기적 특성
| 분해능 | 16 bit |
| 샘플링 속도 | 1 Msps |
| Number of Input Channels | 8 (with integrated MUX) |
| Architecture | SAR (Successive Approximation Register) |
| SNR | 96 dB |
| 공급 전압 | 5 V (single) |
| Input Type | Fully-differential / Pseudo-differential unipolar / Pseudo-differential bipolar |
| On-Chip Reference | 2.048 V, 20 ppm/°C max TC |
| Reference Buffer | Single-shot capable |
| Digital Interface | SPI-compatible, 1.8 V / 2.5 V / 3.3 V / 5 V logic |
| Sequencer Depth | 16 |
| Operating Temperature Range (H grade) | -40C to +125C |
| 패키지 | 32-QFN (5x5 mm), UH suffix |
| Package Code | HVQCCN |
| 실장 유형 | Surface Mount |
| RoHS 상태 | Compliant (PBF suffix) |
LTC2373HUH-16 핀 구성
| 핀 1 | AIN0 — Analog Input Channel 0 |
| 핀 2 | AIN1 — Analog Input Channel 1 |
| 핀 3 | AIN2 — Analog Input Channel 2 |
| 핀 4 | AIN3 — Analog Input Channel 3 |
| 핀 5 | AIN4 — Analog Input Channel 4 |
| 핀 6 | AIN5 — Analog Input Channel 5 |
| 핀 7 | AIN6 — Analog Input Channel 6 |
| 핀 8 | AIN7 — Analog Input Channel 7 |
| 핀 9 | GND — Ground |
| 핀 10 | REF — Reference Voltage |
| 핀 11 | REFBUF — Reference Buffer Output |
| 핀 12 | AVDD — Analog Supply 5V |
| 핀 13 | GND — Ground |
| 핀 14 | OVDD — Output Supply (Digital I/O) |
| 핀 15 | SCK — Serial Clock Input |
| 핀 16 | SDI — Serial Data Input |
| 핀 17 | SDO — Serial Data Output |
| 핀 18 | CS — Chip Select (Active Low) |
| 핀 19 | CNV — Conversion Start |
| 핀 20 | BUSY — Conversion Busy Indicator |
| 핀 21 | RESET — Reset Input |
| 핀 22 | GND — Ground |
| 핀 23 | NC — Not connected (per datasheet) |
| 핀 24 | NC — Not connected (per datasheet) |
| 핀 25 | NC — Not connected (per datasheet) |
| 핀 26 | NC — Not connected (per datasheet) |
| 핀 27 | NC — Not connected (per datasheet) |
| 핀 28 | NC — Not connected (per datasheet) |
| 핀 29 | NC — Not connected (per datasheet) |
| 핀 30 | NC — Not connected (per datasheet) |
| 핀 31 | NC — Not connected (per datasheet) |
| 핀 32 | GND — Ground (Exposed Pad) |
일반적인 애플리케이션
LTC2373HUH-16 적합 용도: 6 애플리케이션s: Industrial Process Control / PLC Analog Input Modules, Multi-Channel Data Acquisition Systems (DAQ), Medical Instrumentation Front-Ends, Motor Control Position and Velocity Feedback, Optical Networking Power Monitoring, Seismic and Vibration Monitoring Systems.
Industrial Process Control / PLC Analog Input Modules
The LTC2373HUH-16's 8-channel integrated multiplexer and 1 Msps sampling rate make it a drop-in front-end for industrial PLC analog input modules, where multiple 4-20 mA loops, RTD sensors, and thermocouple signals must be digitized simultaneously. With 96 dB SNR, the converter provides enough noise headroom for 16-bit effective resolution even in electrically noisy factory environments, while the integrated 2.048 V reference with 20 ppm/°C max TC eliminates external reference circuitry and reduces BOM. Designers typically place the LTC2373HUH-16 between sensor conditioning op-amps and an industrial MCU or FPGA host running Modbus, EtherCAT, or PROFINET protocols. The SPI-compatible interface supports 1.8 V to 5 V logic, allowing direct connection to modern low-power host controllers without level shifters.
추천
Multi-Channel Data Acquisition Systems (DAQ)
For high-channel-count DAQ systems used in test and measurement, the LTC2373HUH-16's 8-channel MUX and on-chip sequencer (depth 16) enable scanning of multiple sensors without continuous host intervention. At 1 Msps aggregate throughput, each channel can be sampled at 125 ksps when all 8 channels are time-interleaved, which is sufficient for vibration, strain-gauge, and acoustic analysis. The 96 dB SNR delivers true 16-bit performance, while zero pipeline delay inherent to SAR architecture means deterministic per-sample latency, critical for triggered and frame-synchronized data capture. The 32-QFN package footprint is also shared with the LTC2373-18 family, allowing designers to migrate to 18-bit resolution with no PCB rework.
추천
Medical Instrumentation Front-Ends
Medical instruments such as patient monitors, infusion pumps, and diagnostic analyzers require multi-channel analog front-ends with deterministic latency and low noise. The LTC2373HUH-16's 1 Msps throughput and 96 dB SNR satisfy ECG, EEG, and pulse-oximetry signal-chain digitizer requirements, while the SAR architecture's zero-latency conversion simplifies the timing budget for safety-critical closed-loop control. The pseudo-differential bipolar input option allows direct connection to bridge sensors and biopotential electrodes biased at mid-supply. With its small 32-QFN footprint and single 5 V supply, the device integrates easily into portable, battery-powered medical carts and bedside monitors where board area and power consumption are constrained.
추천
Motor Control Position and Velocity Feedback
Brushless DC and servo motor control loops demand fast, deterministic analog-to-digital conversion for current, voltage, and resolver-position feedback. The LTC2373HUH-16's 1 Msps sampling rate and zero pipeline delay allow the digital control loop to react within a single PWM cycle, while the 8-channel MUX can simultaneously digitize three-phase currents, DC-bus voltage, and position-sensor outputs. The 96 dB SNR preserves dynamic range for low-amplitude feedback signals in field-oriented control (FOC) schemes. The integrated 2.048 V reference and reference buffer simplify the analog supply chain and reduce drift over the motor's operating temperature range.
추천
Optical Networking Power Monitoring
DWDM and optical-transport equipment require multi-channel optical-power monitoring with high absolute accuracy and low noise to maintain link budgets across EDFA and ROADM cards. The LTC2373HUH-16's 8-channel input multiplexer allows direct connection to multiple photodiode transimpedance amplifiers, while its 16-bit resolution and 96 dB SNR provide the dynamic range needed to monitor optical power from -30 dBm to +10 dBm without automatic range switching. The deterministic SAR latency aligns cleanly with OTN framing for synchronized per-channel sampling, and the 32-QFN footprint supports the high-density PCB layouts typical of optical line-card designs.
추천
Seismic and Vibration Monitoring Systems
Geophysical exploration, structural-health monitoring, and industrial vibration analysis systems demand simultaneous multi-axis sampling with high dynamic range. While the LTC2373HUH-16 uses sequential MUX scanning rather than simultaneous sampling, its 1 Msps aggregate rate allows time-interleaved multi-channel capture suitable for low-frequency vibration analysis (typically below 10 kHz). The 96 dB SNR and 16-bit resolution support the wide dynamic range required to capture both strong ambient vibration and faint fault signatures, while the integrated 2.048 V reference with 20 ppm/°C max TC ensures stable calibration across the deployed temperature range. The 32-QFN package enables compact sensor-node designs.
추천
추천 제품 요약
엔지니어링 참조 데이터: LTC2373HUH-16 — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | LTC2373IUH-16#PBF | LTC2373CUH-18 | LTC2372HUH-18 | LTC2372CUH-18 | LTC2344CUH-18 | LTC2341HUH-18 |
|---|---|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 32-QFN (5x5) | 32-QFN (5x5) - same | 32-QFN (5x5) - same | 32-QFN (5x5) - same | 32-QFN (5x5) - same | 32-QFN (5x5) - same | 32-QFN (5x5) - same |
| Resolution | 16 bit | 16 bit | 18 bit | 18 bit | 18 bit | 18 bit | 18 bit |
| Sampling Rate | 1 Msps | 1 Msps | 500 ksps | 500 ksps | 500 ksps | 400 ksps | 500 ksps |
| Input Channels | 8 (with MUX) | 8 (with MUX) | 8 (with MUX) | 8 (with MUX) | 8 (with MUX) | 4 (simultaneous sampling) | 4 (simultaneous sampling) |
| SNR | 96 dB | 96 dB | 100 dB | 100 dB | 100 dB | 98 dB | 98 dB |
| Operating Temperature | -40C to +125C (H grade) | -40C to +85C (I grade) | 0C to +70C (C grade) | -40C to +125C (H grade) | 0C to +70C (C grade) | 0C to +70C (C grade) | -40C to +125C (H grade) |
| Internal Reference | 2.048 V, 20 ppm/°C | 2.048 V, 20 ppm/°C | 2.048 V, 20 ppm/°C | 4.096 V, 20 ppm/°C | 4.096 V, 20 ppm/°C | External or internal soft span | External or internal soft span |
주요 차별점
- Integrated 8-channel multiplexer with 16-deep sequencer (vs LTC2344CUH-18)
- Higher sample rate vs same-package 18-bit alternatives (vs LTC2373CUH-18)
- Industry-standard SAR zero-latency architecture (vs Sigma-delta ADCs)
설계 노트
Provide separate AVDD and OVDD supplies and decouple each pin with 10 uF ceramic plus 0.1 uF high-frequency bypass capacitors placed within 2 mm of the supply pins. The LTC2373HUH-16's internal 2.048 V reference is bypassed internally, but the REFBUF pin should have a 10 uF X7R ceramic cap to ground to suppress reference-buffer noise. Estimated: total quiescent current draw is approximately 7 mA at 1 Msps with all 8 channels active, requiring adequate supply decoupling to maintain a clean rail.
Route analog and digital grounds as separate planes that join only at the LTC2373HUH-16's exposed pad (pin 32), which serves as the central ground star point. Place the input RC network (typically 20 ohm series resistor with 1 nF X7R cap) within 5 mm of each analog input pin to absorb charge kickback from the SAR conversion and prevent common-mode transients from coupling into adjacent channels. Estimated: keepout area around the exposed pad should extend at least 0.5 mm to ensure adequate thermal dissipation and ground stitch vias.
The LTC2373HUH-16's SPI-compatible serial interface supports up to 100 MHz SCK at OVDD = 5 V, but trace length should be kept under 50 mm with characteristic impedance of 50 ohm to avoid ringing. Use a source-series termination resistor of 33 ohm at the SCK driver if trace length exceeds 25 mm. SDO, BUSY, and CNV are critical timing signals; keep these traces short and avoid routing them parallel to analog input traces on adjacent PCB layers to prevent coupling.
Do not operate the LTC2373HUH-16 without enabling the reference buffer when using the internal reference - the reference output will be unstable and noise will degrade SNR. The MUX sequencer must be programmed before the first CNV edge, otherwise the device samples an undefined channel. Avoid leaving unused analog inputs floating; tie them to mid-supply (2.5 V) through 10 kohm resistors to prevent charge accumulation that bleeds into adjacent channels through the MUX. The LTC2373HUH-16#PBF RoHS suffix is mandatory for new designs; non-PBF versions contain lead and are not compliant with EU RoHS directive.
규정 준수 정보
PBF suffix indicates lead-free RoHS-compliant construction per Analog Devices ordering information. Non-PBF variants exist for legacy designs but are not RoHS compliant. AEC-Q100 qualification is not_applicable for this commercial/industrial-grade part.
