The LTC ®2411/LTC2411-1 are 2.7V to 5.5V micropower 24-bit differential ∆Σ analog-to-digital converters with an integrated oscillator, 2ppm INL and 0.29ppm RMS noise. They use delta-sigma technology and provide single cycle settling time for multiplexed applications. Through a single pin, the LTC2411 can be configured for better than 110dB differential mode rejection at 50Hz or 60Hz ±2%, and the LTC2411-1 can provide better than 87dB input differential mode rejection over the range of 49Hz to 61.2Hz, or they can be driven by an external oscillator for a user-defined rejection frequency. The LTC2411 and LTC2411-1 are identical when driven by an external oscillator. The internal oscillator requires no external frequency setting components. The converters accept any external differential reference voltage from 0.1V to VCC for flexible ratiometric and remote sensing measurement configurations. The full- scale differential input range is from –0.5VREF to 0.5VREF. The reference common mode voltage, VREFCM, and the input common mode voltage, VINCM, may be indepen- dently set anywhere within the GND to VCC range of the LTC2411/LTC2411-1. The DC common mode input rejec- tion is better than 140dB. The LTC2411/LTC2411-1 communicate through a flexible 3-wire digital interface that is compatible with SPI and MICROWIRE TM protocols.
The LTC2411 and LTC2411‑1 are micropower 24‑bit differential ADCs that operate from a single 2.7 V to 5.5 V supply. They feature an internal oscillator, no latency (digital filter settles in a single cycle), and selectable 50 Hz/60 Hz notch filtering for power‑line rejection.
The devices are offered in a 10‑lead plastic MSOP (MS10) package, provide up to 140 dB input common‑mode rejection, and include a flexible 3‑wire digital interface compatible with SPI and Microwire protocols. Typical applications include weight scales, temperature measurement, strain‑gauge transducers, and data‑acquisition systems.
| Conversion Mode Supply Current | 200 µA (typical) |
|---|---|
| Package | MS10 10‑lead plastic MSOP |
The LTC2411 has no latency; its digital filter settles in a single cycle.
Typical conversion‑mode supply current is about 200 µA.
The full‑scale differential input range is ±0.5 V per input.
It is supplied in a 10‑lead plastic MSOP (MS10) package.