LHA5178
The LHA5174 (quad) and LHA5178 (octal) are 16-bit, delta-sigma (ΔΣ) analog-to-digital converters (ADCs) with data rates up to 256k samples per second (SPS), allowing simultaneous sampling of four or eight channels. The devices are offered in identical packages, permitting drop in expandability.
The LHA5174 and LHA5178 allow high-precision industrial measurement with excellent dc and ac specifications, meanwhile achieving very low power – only 23mW/ch at 256kSPS. The high-order, chopper-stabilized modulator achieves very low drift with low in-band noise. The onboard decimation filter suppresses modulator and signal out-of-band noise. The bandwidth is up to 110.8kHz for 256kSPS.
Four operating modes allow for optimization of speed, resolution, and power. All operations are controlled directly by pins; there are no registers to program. The devices are fully specified over the extended industrial range (−40°C to +125°C) and are available in an LQFP-64 package.
Product Features
- Simultaneously Measure Four/Eight Channels
- Up to 256kSPS Data Rate
- AC Performance:
110.8kHz Bandwidth
97dB SNR
−115dB THD - DC Accuracy:
0.25μV/℃ Offset Drift
1ppm/℃ Gain Drift
4ppm/FSR INL - Selectable Operating Modes:
Ultra-Speed: 256kSPS, 23mW/ch
High-Speed: 128kSPS, 21mW/ch
High-Resolution: 64kSPS, 20mW/ch
Low-Power: 64kSPS, 12mW/ch - Linear Phase Digital Filter
- SPI™ or Frame-Sync Serial Interface
- Low Sampling Aperture Error
- Analog Supply: 5V or ±2.5V
- Digital Core: 1.8V
- I/O Supply: 1.8V to 3.3V
Application Scenario
- Process control
- Vibration/Modal Analysis
- Multi-Channel Data Acquisition
- Acoustics/Dynamic Strain Gauges
- Pressure Sensors
Room G2-1201,Artificial Intelligence Industrial Park, No. 88 JinjihuAvenue, Suzhou Industrial Park
Room 903,Hantang Building, No.1 Xinglong Street, OCT, NanshanDistrict,Shenzhen
Room 1306,Zhongkun Building, No. 59, Gaoliangqiao Xie StreetBeixiaguan Street, Haidian District, Beijing
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