AD7485 is a 14-bit high speed low power SAR ADC with a maximum throughput of 1MSPS. It supports single-ended and differential input, has an internal 2.5V reference voltage, a low noise wideband follower and hold, and uses a proprietary algorithmic successive approximation technique. The conversion time is 2.6us and the power consumption is 80mW (normal working mode) and 3mW (NAP mode).
The AD7485 is a 14‑bit successive‑approximation ADC offering up to 1 MSPS throughput and a 40 MHz input bandwidth. It operates from a single 5 V supply, includes an internal 2.5 V reference, and provides over‑range indication via a fifteenth data bit.
The datasheet details electrical characteristics, pin functions, timing specifications, absolute maximum ratings, and typical performance graphs. Power‑saving modes include NAP (3 mW) and STANDBY (10 µW), and the device is supplied in a 48‑lead LQFP package suitable for -40 °C to +85 °C operation.
| Resolution | 14 bits |
|---|---|
| Maximum Throughput Rate | 1 MSPS |
| Input Bandwidth | 40 MHz (typ @ 3 dB) |
| Power Consumption (Normal Mode) | 80 mW max |
| Power‑Saving Modes | NAP 3 mW, STANDBY 10 µW |
| Supply Voltage | 4.75 V to 5.25 V |
| Temperature Range | -40 °C to +85 °C |
| Package | 48‑lead LQFP |
The AD7485 can sample at up to 1 MSPS.
The device offers a NAP mode that consumes 3 mW and a STANDBY mode that consumes 10 µW.
The analog input range is 0 V to 2.5 V; exceeding this sets the fifteenth over‑range bit.
The AD7485 is supplied in a 48‑lead LQFP package.