The AD7485 is a 14-bit, high speed, low power, successive- approximation ADC. The part features a serial interface with throughput rates up to 1 MSPS. The part contains a low noise, wide bandwidth track-and-hold that can handle input frequencies in excess of 40 MHz. The conversion process is a proprietary algorithmic successive- approximation technique. The input signal is sampled and a conversion is initiated on the falling edge of the CONVST signal.
The AD7485 is a high‑speed, low‑power 14‑bit successive‑approximation ADC. It operates from a single 5 V supply, offers a serial interface compatible with microcontrollers and DSPs, and includes an internal 2.5 V reference with over‑range indication.
Key features include a 1 MSPS throughput rate, 40 MHz input bandwidth, power‑saving NAP and Standby modes, and a 48‑lead LQFP package suitable for temperatures from –40 °C to +85 °C.
| Throughput Rate | 1 MSPS |
|---|---|
| Resolution | 14 Bits |
| Power Consumption (Normal Mode) | 80 mW |
| Power Consumption (NAP Mode) | 3 mW |
| Power Consumption (Standby Mode) | 10 µW |
| Input Voltage Range | 0 V to 2.5 V |
| Supply Voltage | 4.75 V to 5.25 V |
| Package | 48‑lead LQFP |
The AD7485 can sample at up to 1 MSPS.
It offers a NAP mode that consumes 3 mW and a Standby mode that consumes about 10 µW.
The analog input range is 0 V to 2.5 V.
The device is supplied in a 48‑lead low‑profile quad flat‑pack (LQFP).