The AD7734 is a high precision, high throughput analog front end from TI. It features 24 bits no missing codes, ±0.0025% nonlinearity, 18-bit p-p resolution (21 bits effective) at 500 Hz, 16-bit p-p resolution (19 bits effective) at 2 kHz, and 14-bit p-p resolution (18 bits effective) at 15 kHz. The device also integrates on-chip per channel system calibration, supports 4 single-ended analog inputs, and has ±10 V input ranges. It can be configured via a 3-wire serial interface SPI™, QSPI™, MICROWIRE™, and DSP compatible Schmitt trigger on logic inputs. The AD7734 operates with a single +5 V analog supply and 3 V or 5 V digital supply. It comes in a 28-lead TSSOP package. AD7734 is suitable for PLCs/DCS, multiplexing applications, process control, and industrial instrumentation.
The AD7734 is a high‑precision, high‑throughput 24‑bit ADC designed for multiplexed instrumentation and process‑control applications. It offers four single‑ended analog inputs with selectable +5 V or +10 V ranges, over‑voltage tolerance up to +16.5 V, and operates from a single 5 V analog supply.
The device features a 3‑wire serial interface compatible with SPI, QSPI, MICROWIRE and DSP, on‑chip per‑channel system calibration, and operates over an industrial temperature range of –40 °C to +105 °C. Detailed specifications, timing diagrams, absolute maximum ratings and register maps are provided in the document.
| Resolution | 24 bits |
|---|---|
| Input voltage range | +10 V (single‑ended) |
| Over‑voltage tolerance | Up to +16.5 V per channel |
| Supply voltage | 5 V analog, 3 V or 5 V digital |
| Operating temperature range | -40 °C to +105 °C |
| Power dissipation (normal mode) | 85 mW typical |
The device is specified for operation from –40 °C to +105 °C.
The AD7734 supports 3‑wire serial interfaces compatible with SPI™, QSPI™, MICROWIRE™ and DSP.