The AD7440/AD7450A are 10-bit and 12-bit high speed, low power, successive approximation (SAR) analog-to-digital converters with a fully differential analog input, wide input bandwidth, 70 dB SINAD and 1 MSPS maximum throughput rate. Suitable for transducer interface, battery powered systems, data acquisition systems, portable instrumentation and motor control applications.
The AD7440 and AD7450A are 10‑bit and 12‑bit successive‑approximation ADCs with fully differential inputs, capable of 1 MSPS throughput while operating from a single 3 V or 5 V supply. They offer low power consumption, flexible clock management, and a shutdown mode for power‑efficient operation.
The document includes detailed specifications (dynamic performance, DC accuracy, power requirements), timing diagrams, absolute maximum ratings, package dimensions, and an ordering guide for the various SOT‑23 and MSOP options. It also contains functional block diagrams and application notes for evaluation boards.
| Resolution (AD7440) | 10 bits |
|---|---|
| Resolution (AD7450A) | 12 bits |
| Maximum Throughput Rate | 1 MSPS |
| Power Consumption (3 V supply, 1 MSPS) | 4 mW max |
| Power‑down Current | 1 pA max |
| Full‑Power Bandwidth (‑3 dB) | 20 MHz |
Both devices can sample up to 1 MSPS.
They operate from a single 3 V or 5 V supply.
It consumes up to 4 mW.
The power‑down current is specified as 1 pA max.