AD7490 is a 12-bit high speed, low power, 16-channel successive approximation ADC with a maximum throughput rate of 1 MSPS. It features single-ended inputs with a sequencer, wide input bandwidth and high SNR (69.5 dB at 50 kHz input frequency). AD7490 provides a VDD supply range of 2.7 V to 5.25 V and multiple packages to suit a wide range of applications.
The AD7490 is a 12‑bit high‑speed, low‑power ADC offering up to 1 MSPS throughput. It operates from a single 2.7 V to 5.25 V supply and provides 16 single‑ended inputs with a programmable channel sequencer. The device features a low‑noise track‑and‑hold amplifier, flexible power/clock management, and a high‑speed serial interface (SPI/QSPI/MICROWIRE).
The part is available in 28‑lead TSSOP and 32‑lead LFCSP packages. Detailed specifications cover dynamic performance, timing, absolute maximum ratings, pin configurations, and typical performance characteristics, making the AD7490 suitable for microprocessor or DSP‑based data‑acquisition systems.
| Throughput rate | 1 MSPS |
|---|---|
| Supply voltage range | 2.7 V to 5.25 V |
| Number of input channels | 16 single‑ended |
| Resolution | 12 bits |
| Signal‑to‑Noise Ratio (SNR) | 69.5 dB at 50 kHz |
| Power consumption (max, 3 V, 870 kSPS) | 5.4 mW |
| Power consumption (max, 5 V, 1 MSPS) | 12.5 mW |
| Package options | 28‑lead TSSOP, 32‑lead LFCSP |
The AD7490 can sample at up to 1 MSPS.
At 870 kSPS with a 3 V supply it consumes 5.4 mW, and at 1 MSPS with a 5 V supply it consumes 12.5 mW.
The device is offered in a 28‑lead TSSOP package and a 32‑lead LFCSP package.