LHA787X is a series of multi-channel synchronous sampling, 24 bit A - ∑ analog-to-digital converters (ADCs) with built-in programmable gain amplifiers (PGA), internal references, and oscillators. With its wide dynamic range of ADC, scalable data transmission rate, and internal fault detection monitoring device, LHA787X is favored for industrial power monitoring and protection, as well as testing and measurement applications. True high impedance input supports LHA787X to be directly connected to a resistive voltage divider network or voltage transformer to measure line voltage, or connected to a current transformer or Rogowski coil to measure current. With high integration and excellent performance, the LHA787X series products can create upgradable industrial power systems while significantly reducing size, power consumption, and overall cost.
LHA787X has a flexible input multiplexer on each channel, which is independently connected to generate signals internally for testing, temperature, and fault detection. Fault detection can be performed internally within the device, which uses an integrated comparator with trigger levels controlled by a digital to analog converter (DAC). The data rate of LHA787X can reach up to 128kSPS
These complete analog front-end (AFE) solutions are packaged in the LQFP-64 package and have a rated industrial temperature range of -40 ℃ to+105 ℃.
Product characteristics
Eight channel differential analog-to-digital converter (ADC) input
Excellent performance:
Dynamic range:
122dB at 1kSPS
91dB at 64kSPS
Crosstalk: -110dB
Total Harmonic Distortion (THD): -90dB at 50Hz and 60Hz. Analog power range options:
3V to 5V (unipolar)
± 2.5V (bipolar, allowing DC coupling)
Number: 1.8V to 5.5V
Low power consumption: 2mW per channel
Data rates: 1, 2, 4, 8, 16, 32, 64, and 128 kSPS
Programmable gains: 1, 2, 3, 4, 6, 8, 12, 24
Fault detection and device testing functions
SPITM data interface and four general-purpose input/output interfaces (GPIO) ◇ Package: Thin Quad Flat Package (LQFP) -64 (PAG)
Working temperature range: -40 ℃ to+105 ℃
Domestic fully compatible ADS131E08
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