TM7711

The TM7711 is a single-channel analog front-end designed for low-frequency measurements in electronic scales. The device accepts low-level input signals directly from sensors and produces serial digital output. 24-bit no missing code performance is achieved using Σ-Δ conversion technology. Selected input signals are routed to a gain-programmable dedicated front-end based on an analog modulator. An on-chip digital filter processes the modulator output; the filter's notch frequency and output update rate can be adjusted by issuing commands via the communication interface, enabling programming of the digital filter's first notch. The TM7711 operates from a single 2.6~5.5V supply. It features fully differential analog inputs with one reference input. The TM7711 is an ideal solution for high-precision electronic scale systems. Its specialized architecture ensures extremely low power consumption, and a built-in power-down mode further reduces standby power. The device also offers high integration, fast response, and strong noise immunity, significantly reducing overall system cost while improving performance and reliability of electronic scale systems.

Key features

• 1 fully differential input channel ADC
• On-chip direct temperature measurement with digital output
• 24-bit no missing codes
• On-chip low-noise amplifier with gain of 128
• ±0.001% nonlinearity
• Selectable 10Hz and 40Hz output data rates
• Simultaneous 50Hz and 60Hz power line interference rejection
• Built-in clock oscillator, no external components required
• Simple 2-wire serial interface
• Supply voltage range: 2.6~5.5V
• Operating temperature range: -40~+85℃
• Package: SOP8 / DIP8