LTC1091/LTC1092/LTC1093/LTC1094 is a 10-bit serial I/O data acquisition system with programmable unipolar/bipolar conversions, differential/single-ended multiplexer configurations, sample-and-holds, single supply 5V, 10V or ±5V operation, direct 3- or 4-wire interface to most MPU serial ports and all MPU parallel I/O ports, analog inputs common mode to supply rails, resolution: 10 bits, total unadjusted error (A Grade): ±1LSB over temp, fast conversion time: 20µs, low supply current LTC1091: 3.5mA Max, 1.5mA Typ LTC1092/LTC1093/LTC1094: 2.5mA Max, 1mA Typ.
The LTC1091‑LTC1094 family provides 10‑bit successive‑approximation ADCs with serial I/O, supporting 1, 2, 6 or 8 analog channels. They feature programmable unipolar/bipolar conversion, differential or single‑ended multiplexing, and sample‑and‑hold circuitry, all operable from a single 5 V supply or a dual‑supply configuration.
Typical applications include sensor interfacing, data logging, and remote acquisition where low power (as low as 1 mA) and minimal wiring are critical. The devices include on‑chip reference, configurable clock rates up to 3 MHz, and detailed electrical specifications for precise system design.
| Resolution | 10 bits |
|---|---|
| Maximum Supply Current (LTC1091) | 3.5 mA Max |
| Conversion Time | 20 ms (fast) |
| Number of Channels | 1, 2, 6, 8 |
| Maximum Clock Frequency | 3.0 MHz |
The maximum clock frequency is 3.0 MHz at a 5 V supply.
The LTC1093 and LTC1094 provide 6‑channel and 8‑channel configurations respectively.
Typical conversion time is 20 ms.